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Taha Selim Ustun received the Ph.D. degree in electrical engineering from Victoria University, Melbourne, VIC, Australia. He is a Researcher with the Fukushima Renewable Energy Institute, AIST (FREA), where he leads the Smart Grid Cybersecurity Laboratory. Prior to that he was a faculty member with the School of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburgh, PA, USA. His current research interests include power systems protection, communication in power networks, distributed generation, microgrids, electric vehicle integration, and Cybersecurity in smart grids. He serves in editorial board of IEEE Access, IEEE Tr. on Industrial Informatics, Energies, Electronics, Electricity, World Electric Vehicle and Information journals. Dr. Ustun is a member of the IEEE 2004 and 2800, IEC Renewable Energy Management WG 8 and IEC TC 57 WG17. He has been invited to run specialist courses in Africa, India, and China. He has delivered talks for the Qatar Foundation, the World Energy Council, the Waterloo Global Science Initiative, and the European Union Energy Initiative (EUEI). His research has attracted funding from prestigious programs in Japan, Australia, EU and North America.
In the current scenario, sustainable power generation received greater attention due to the concerns of global warming and climate change. In the present paper, a Solar Photovoltaic/Diesel Generator/ Battery-based hybrid system has been considered to meet the electrical energy demand of a remote location of India. The cost of the energy of hybrid system is minimized using a Biogeography-based Optimization (BBO) algorithm under the constraints of power reliability, carbon emission and renewable energy fraction. Load following and cycle charging strategies have been considered in order to investigate the performance analysis of the proposed hybrid system. Further, different component combinations of specifications available on the market are presented for detail analysis. The minimum cost of energy of the proposed hybrid system is obtained as 0.225 $/kWh.
Anurag Chauhan; Subho Upadhyay; Mohd. Khan; S. Hussain; Taha Ustun. Performance Investigation of a Solar Photovoltaic/Diesel Generator Based Hybrid System with Cycle Charging Strategy Using BBO Algorithm. Sustainability 2021, 13, 8048 .
AMA StyleAnurag Chauhan, Subho Upadhyay, Mohd. Khan, S. Hussain, Taha Ustun. Performance Investigation of a Solar Photovoltaic/Diesel Generator Based Hybrid System with Cycle Charging Strategy Using BBO Algorithm. Sustainability. 2021; 13 (14):8048.
Chicago/Turabian StyleAnurag Chauhan; Subho Upadhyay; Mohd. Khan; S. Hussain; Taha Ustun. 2021. "Performance Investigation of a Solar Photovoltaic/Diesel Generator Based Hybrid System with Cycle Charging Strategy Using BBO Algorithm." Sustainability 13, no. 14: 8048.
Smartgrid technologies necessitate the use of information technologies (IT) and communication in power system networks. There are different ways of integrating power system equipment in the communication layer for successful information exchange. IEC 61850 offers standard support object-oriented modeling and standardized parameter declaration. This lends itself to the diverse nature of power systems and supports plug-and-play (PnP) operation in smartgrids. Considering the amount of time that is invested in customizing non-PnP communication networks, this is a huge advantage and the main reason behind the popularity of IEC 61850. In line with this popularity, the body of research regarding this standard is constantly growing. In order to test the developed IEC 61850 models and messages, various tools are required. Researchers operate with a limited budget and have to know the abilities and limitations of such tools before making a procurement decision. This paper provides a critical review of IEC 61850 testing tools available in the market. It compares them in terms of their abilities, technical superiority and customer experience, including delivery time and customer support. Researchers in this field will benefit significantly from this work when making procurement decisions based on their needs.
Taha Ustun. A Critical Review of IEC 61850 Testing Tools. Sustainability 2021, 13, 6213 .
AMA StyleTaha Ustun. A Critical Review of IEC 61850 Testing Tools. Sustainability. 2021; 13 (11):6213.
Chicago/Turabian StyleTaha Ustun. 2021. "A Critical Review of IEC 61850 Testing Tools." Sustainability 13, no. 11: 6213.
This work is the earliest attempt to propose an integrated resource planning for distributed hybrid microgrids considering virtual-inertia support (VIS) and demand-response support (DRS) systems. Initially, three-distributed sustainable energy-based unequal hybrid microgrids are envisioned with the availability of solar/wind/bioenergy resources. In order to overcome the effects of intermittency in renewable resources and low inertia, each microgrid is incorporated with DRS and VIS units for demand- and supply-side management, respectively. The proposed system is simulated in MATLAB considering real-time recorded solar/wind data with realistic loading for 12 months. A novel quasi-oppositional chaotic selfish-herd optimization (QCSHO) algorithm is proposed by hybridizing quasi-opposition-based learning and chaotic linear search techniques into the selfish-herd optimization, for optimal regulation of voltage and frequency in microgrids. Then, the system responses are compared with 7 algorithms and 5 error functions to tune PID controllers’ gains, which confirmed the superiority of QCSHO over others. Then, the study proceeds to investigate the voltage, frequency, and tie-line power coordination in 5 extreme scenarios of source and load variations in the proposed system without retuning the controllers. Finally, the system responses are analyzed for 10 different possible allocation of VIS and DRS units in different microgrids to find the most suitable combinations, and the results are recorded.
Amar Barik; Dulal Das; Abdul Latif; S. Hussain; Taha Ustun. Optimal Voltage–Frequency Regulation in Distributed Sustainable Energy-Based Hybrid Microgrids with Integrated Resource Planning. Energies 2021, 14, 2735 .
AMA StyleAmar Barik, Dulal Das, Abdul Latif, S. Hussain, Taha Ustun. Optimal Voltage–Frequency Regulation in Distributed Sustainable Energy-Based Hybrid Microgrids with Integrated Resource Planning. Energies. 2021; 14 (10):2735.
Chicago/Turabian StyleAmar Barik; Dulal Das; Abdul Latif; S. Hussain; Taha Ustun. 2021. "Optimal Voltage–Frequency Regulation in Distributed Sustainable Energy-Based Hybrid Microgrids with Integrated Resource Planning." Energies 14, no. 10: 2735.
Increased connectivity is required to implement novel coordination and control schemes. IEC 61850-based communication solutions have become popular due to many reasons—object-oriented modeling capability, interoperable connectivity and strong communication protocols, to name a few. However, communication infrastructure is not well-equipped with cybersecurity mechanisms for secure operation. Unlike online banking systems that have been running such security systems for decades, smart grid cybersecurity is an emerging field. To achieve security at all levels, operational technology-based security is also needed. To address this need, this paper develops an intrusion detection system for smart grids utilizing IEC 61850’s Generic Object-Oriented Substation Event (GOOSE) messages. The system is developed with machine learning and is able to monitor the communication traffic of a given power system and distinguish normal events from abnormal ones, i.e., attacks. The designed system is implemented and tested with a realistic IEC 61850 GOOSE message dataset under symmetric and asymmetric fault conditions in the power system. The results show that the proposed system can successfully distinguish normal power system events from cyberattacks with high accuracy. This ensures that smart grids have intrusion detection in addition to cybersecurity features attached to exchanged messages.
Taha Ustun; S. Hussain; Ahsen Ulutas; Ahmet Onen; Muhammad Roomi; Daisuke Mashima. Machine Learning-Based Intrusion Detection for Achieving Cybersecurity in Smart Grids Using IEC 61850 GOOSE Messages. Symmetry 2021, 13, 826 .
AMA StyleTaha Ustun, S. Hussain, Ahsen Ulutas, Ahmet Onen, Muhammad Roomi, Daisuke Mashima. Machine Learning-Based Intrusion Detection for Achieving Cybersecurity in Smart Grids Using IEC 61850 GOOSE Messages. Symmetry. 2021; 13 (5):826.
Chicago/Turabian StyleTaha Ustun; S. Hussain; Ahsen Ulutas; Ahmet Onen; Muhammad Roomi; Daisuke Mashima. 2021. "Machine Learning-Based Intrusion Detection for Achieving Cybersecurity in Smart Grids Using IEC 61850 GOOSE Messages." Symmetry 13, no. 5: 826.
Integration of information technologies with power systems has unlocked unprecedented opportunities in optimization and control fields. Increased data collection and monitoring enable control systems to have a better understanding of the pseudo-real-time condition of power systems. In this fashion, more accurate and effective decisions can be made. This is the key towards mitigating negative impacts of novel technologies such as renewables and electric vehicles and increasing their share in the overall generation portfolio. However, such extensive information exchange has created cybersecurity vulnerabilities in power systems that were not encountered before. It is imperative that these vulnerabilities are understood well, and proper mitigation techniques are implemented. This paper presents an extensive study of cybersecurity concerns in Smart grids in line with latest developments. Relevant standardization and mitigation efforts are discussed in detail and then the classification of different cyber-attacks in smart grid domain with special focus on false data injection (FDI) attack, due to its high impact on different operations. Different uses of this attack as well as developed detection models and methods are analysed. Finally, impacts on smart grid operation and current challenges are presented for future research directions.
Derya Unsal; Taha Ustun; S. Hussain; Ahmet Onen. Enhancing Cybersecurity in Smart Grids: False Data Injection and Its Mitigation. Energies 2021, 14, 2657 .
AMA StyleDerya Unsal, Taha Ustun, S. Hussain, Ahmet Onen. Enhancing Cybersecurity in Smart Grids: False Data Injection and Its Mitigation. Energies. 2021; 14 (9):2657.
Chicago/Turabian StyleDerya Unsal; Taha Ustun; S. Hussain; Ahmet Onen. 2021. "Enhancing Cybersecurity in Smart Grids: False Data Injection and Its Mitigation." Energies 14, no. 9: 2657.
As the number of EVs increases, their impact on electrical systems will be substantial. Novel management schemes are needed to manage the electrical load they require when charging. Literature is rich with different techniques to manage and control this effect on the grid by controlling and optimizing power flow. Although these solutions heavily rely on communication lines, they mostly treat communication as a black box. It is important to develop communication solutions that can integrate EVs, charging stations (CSs), and the rest of the grid in an interoperable way. A standard approach would be indispensable as there are different EV models manufactured by different companies. The IEC 61850 standard is a strong tool used for developing communication models for different smart grid components. However, it does not have the necessary models for implementing smart EV management schemes that coordinate between EVs and CSs. In this paper, these missing links are addressed through the development of corresponding models and message mapping. A hardware-in-the-loop test is performed to validate the communication models and cross-platform operation. Then, a co-simulation environment is used to perform a combined study of communication and the power system components. The developed communication model helps integrate the EVs to a centralized, coordinated voltage control scheme. These models can be used to run extensive impact studies where different domains of smart grids need to be considered simultaneously. The main contribution of this paper is the development of smartgrid communication solutions for enabling successful information exchanges.
Taha Ustun; S. Hussain; Mazheruddin Syed; Paulius Dambrauskas. IEC-61850-Based Communication for Integrated EV Management in Power Systems with Renewable Penetration. Energies 2021, 14, 2493 .
AMA StyleTaha Ustun, S. Hussain, Mazheruddin Syed, Paulius Dambrauskas. IEC-61850-Based Communication for Integrated EV Management in Power Systems with Renewable Penetration. Energies. 2021; 14 (9):2493.
Chicago/Turabian StyleTaha Ustun; S. Hussain; Mazheruddin Syed; Paulius Dambrauskas. 2021. "IEC-61850-Based Communication for Integrated EV Management in Power Systems with Renewable Penetration." Energies 14, no. 9: 2493.
It is known that keeping the power balance between generation and demand is crucial in containing the system frequency within acceptable limits. This is especially important for renewable based distributed hybrid microgrid (DHμG) systems where deviations are more likely to occur. In order to address these issues, this article develops a prominent dual-level “proportional-integral-one plus double derivative {PI−(1 + DD)} controller” as a new controller for frequency control (FC) of DHμG system. The proposed control approach has been tested in DHμG system that consists of wind, tide and biodiesel generators as well as hybrid plug-in electric vehicle and an electric heater. The performance of the modified controller is tested by comparing it with standard proportional-integral (PI) and classical PID (CPID) controllers considering two test scenarios. Further, a recently developed mine blast technique (MBA) is utilized to optimize the parameters of the newly designed {PI − (1 + DD)} controller. The controller’s performance results are compared with cases where particle swarm optimization (PSO) and firefly (FF) techniques are used as benchmarks. The superiority of the MBA-{PI − (1 + DD)} controller in comparison to other two strategies is illustrated by comparing performance parameters such as maximum frequency overshoot, maximum frequency undershoot and stabilization time. The displayed comparative objective function (J) and JFOD index also shows the supremacy of the proposed controller. With this MBA optimized {PI − (1 + DD)} controller, frequency deviations can be kept within acceptable limits even with high renewable energy penetration.
Abdul Latif; S. Hussain; Dulal Das; Taha Ustun. Design and Implementation of Maiden Dual-Level Controller for Ameliorating Frequency Control in a Hybrid Microgrid. Energies 2021, 14, 2418 .
AMA StyleAbdul Latif, S. Hussain, Dulal Das, Taha Ustun. Design and Implementation of Maiden Dual-Level Controller for Ameliorating Frequency Control in a Hybrid Microgrid. Energies. 2021; 14 (9):2418.
Chicago/Turabian StyleAbdul Latif; S. Hussain; Dulal Das; Taha Ustun. 2021. "Design and Implementation of Maiden Dual-Level Controller for Ameliorating Frequency Control in a Hybrid Microgrid." Energies 14, no. 9: 2418.
Elevated price of renewable energy (RE) systems slowed its adoption in many countries. Hence, it is important to select an optimal size of the system in order to decrease cost, excess energy produced by RE system. The RE system is used to minimize air pollution and energy security. The aim of this study is to evaluate and compare the techno-economic performance of grid-connected photovoltaic (PV) power systems for a rooftop solar PV building containing 14 families in six regions with different climate zones in India. For this purpose, grid connected PV (Grid-PV) is installed at optimum tilt angles (OTA). Then, techno-economic performance of these systems is performed in the six climatic zones in India, which is the novelty of this study. RE resources and ambient temperature for different seasons are considered during analysis. The load is fixed for all the sites for a better comparison in the study. The results show that using OTA in Grid-PV system reduces greenhouse gas emissions, e.g. COx, SOx and NOx, decreases payback time while increasing overall PV production and other project productivity parameters. These include specific yield, PV penetration, return on investment, Internal Rate of Interest, Net Present Value, Annualized Saving, Energy sold to the grid for all climatic zones in India proving useful for industry. Using these metrics and results in this paper, researchers and project developers, policy makers can promote better use of renewable energy. Therefore, it is necessary to use Grid-PV with OTA for different climatic zones.
Amit Kumar Yadav; Hasmat Malik; S. M. Suhail Hussain; Taha Selim Ustun. Case Study of Grid-Connected Photovoltaic Power System Installed at Monthly Optimum Tilt Angles for Different Climatic Zones in India. IEEE Access 2021, 9, 60077 -60088.
AMA StyleAmit Kumar Yadav, Hasmat Malik, S. M. Suhail Hussain, Taha Selim Ustun. Case Study of Grid-Connected Photovoltaic Power System Installed at Monthly Optimum Tilt Angles for Different Climatic Zones in India. IEEE Access. 2021; 9 ():60077-60088.
Chicago/Turabian StyleAmit Kumar Yadav; Hasmat Malik; S. M. Suhail Hussain; Taha Selim Ustun. 2021. "Case Study of Grid-Connected Photovoltaic Power System Installed at Monthly Optimum Tilt Angles for Different Climatic Zones in India." IEEE Access 9, no. : 60077-60088.
Sustainable energy based hybrid microgrids are advantageous in meeting constantly increasing energy demands. Conversely, the intermittent nature of renewable sources represents the main challenge to achieving a reliable supply. Hence, load frequency regulation by adjusting the amount of power shared between subsystems is considered as a promising research field. Therefore, this paper presents a new stratagem for frequency regulation by developing a novel two stage integral-proportional-derivative with one plus integral (IPD-(1+I)) controller for multi sources islanded microgrid system (MS-IμGS). The proposed stratagem has been tested in an MS-IμGS comprising of a wind turbine, parabolic trough, biodiesel generators, solid-oxide fuel cell, and electric water heater. The proposed model under different scenarios is simulated in MATLAB environment considering the real-time recorded wind data. A recently developed sine-cosine algorithmic technique (SCA) has been leveraged for optimal regulation of frequency in the considered microgrid. To identify the supremacy of the proposed technique, comparative studies with other classical controllers with different optimization techniques have been performed. From the comparison, it is clearly evident that, SCA-(IPD-(1+I)) controller gives better performance over other considered stratagems in terms of various time domain specific parameters, such as peak deviations (overshoot, undershoot) and settling time. Finally, the robustness of the proposed stratagem is evaluated by conducting sensitivity analysis under ±30% parametric variations and +30% load demand. The lab tests results validate the operation of the proposed system and show that it can be used to regulate the frequency in stand-alone microgrids with a high penetration of renewable energy.
Abdul Latif; S. Hussain; Dulal Das; Taha Ustun. Optimization of Two-Stage IPD-(1+I) Controllers for Frequency Regulation of Sustainable Energy Based Hybrid Microgrid Network. Electronics 2021, 10, 919 .
AMA StyleAbdul Latif, S. Hussain, Dulal Das, Taha Ustun. Optimization of Two-Stage IPD-(1+I) Controllers for Frequency Regulation of Sustainable Energy Based Hybrid Microgrid Network. Electronics. 2021; 10 (8):919.
Chicago/Turabian StyleAbdul Latif; S. Hussain; Dulal Das; Taha Ustun. 2021. "Optimization of Two-Stage IPD-(1+I) Controllers for Frequency Regulation of Sustainable Energy Based Hybrid Microgrid Network." Electronics 10, no. 8: 919.
This work is a maiden attempt towards the voltage stability enhancement of a hybrid power system (HPS) comprising of Parabolic Trough solar power (PSP), Dish-Stirling Solar Power (DSP) and diesel generator (DG). DSP coupled with induction generator requires reactive power for its field winding to be magnetized whereas PSP employing permanent magnet synchronous generator (PMSG) doesn’t require reactive power for excitation. So, it’s worthwhile to infer that PSP reduces the reactive power requirement for its own functionality and may meet the same load demand at low voltage compensation. Lower voltage compensation requirement results in higher voltage stability. Besides, dynamic responses of the system are also improved as the HPS has been incorporated with Voltage Compensating Devices (VCDs) like Static Var Compensator (SVC), Static Synchronous Compensator (STATCOM) and Dynamic Voltage Restorer (DVR). Inclusion of FACTS devices reduces the probability of the transient voltage instability. HPS with FACTS devices under PSP has been subjected to the critical change in load with positive and negative infinite slope at regular interval of time to see the system practicality and its feasibility. The graphical and numerical analysis of the proposed system explicitly shows that the proposed HPS with PSP retains the system voltage stability with great margin under DVR. The efficient hybrid power system as a whole has been achieved to maintain the system reliability in terms of voltage because of the presence of PSP and DVR.
Sudhanshu Ranjan; Dulal Chandra Das; Abdul Latif; Nidul Sinha; S. M. Suhail Hussain; Taha Selim Ustun. Maiden Voltage Control Analysis of Hybrid Power System With Dynamic Voltage Restorer. IEEE Access 2021, 9, 60531 -60542.
AMA StyleSudhanshu Ranjan, Dulal Chandra Das, Abdul Latif, Nidul Sinha, S. M. Suhail Hussain, Taha Selim Ustun. Maiden Voltage Control Analysis of Hybrid Power System With Dynamic Voltage Restorer. IEEE Access. 2021; 9 (99):60531-60542.
Chicago/Turabian StyleSudhanshu Ranjan; Dulal Chandra Das; Abdul Latif; Nidul Sinha; S. M. Suhail Hussain; Taha Selim Ustun. 2021. "Maiden Voltage Control Analysis of Hybrid Power System With Dynamic Voltage Restorer." IEEE Access 9, no. 99: 60531-60542.
Modern power systems require increased connectivity to implement novel coordination and control schemes. Wide-spread use of information technology in smartgrid domain is an outcome of this need. IEC 61850-based communication solutions have become popular due to a myriad of reasons. Object-oriented modeling capability, interoperable connectivity and strong communication protocols are to name a few. However, power system communication infrastructure is not well-equipped with cybersecurity mechanisms for safe operation. Unlike online banking systems that have been running such security systems for decades, smartgrid cybersecurity is an emerging field. A recent publication aimed at equipping IEC 61850-based communication with cybersecurity features, i.e. IEC 62351, only focuses on communication layer security. To achieve security at all levels, operational technology-based security is also needed. To address this need, this paper develops an intrusion detection system for smartgrids utilizing IEC 61850‘s Sampled Value (SV) messages. The system is developed with machine learning and is able to monitor communication traffic of a given power system and distinguish normal data measurements from falsely injected data, i.e. attacks. The designed system is implemented and tested with realistic IEC 61850 SV message dataset. Tests are performed on a Modified IEEE 14-bus system with renewable energy-based generators where different fault are applied. The results show that the proposed system can successfully distinguish normal power system events from cyberattacks with high accuracy. This ensures that smartgrids have intrusion detection in addition to cybersecurity features attached to exchanged messages.
Taha Selim Ustun; S. M. Suhail Hussain; Levent Yavuz; Ahmet Onen. Artificial Intelligence Based Intrusion Detection System for IEC 61850 Sampled Values Under Symmetric and Asymmetric Faults. IEEE Access 2021, 9, 56486 -56495.
AMA StyleTaha Selim Ustun, S. M. Suhail Hussain, Levent Yavuz, Ahmet Onen. Artificial Intelligence Based Intrusion Detection System for IEC 61850 Sampled Values Under Symmetric and Asymmetric Faults. IEEE Access. 2021; 9 (99):56486-56495.
Chicago/Turabian StyleTaha Selim Ustun; S. M. Suhail Hussain; Levent Yavuz; Ahmet Onen. 2021. "Artificial Intelligence Based Intrusion Detection System for IEC 61850 Sampled Values Under Symmetric and Asymmetric Faults." IEEE Access 9, no. 99: 56486-56495.
The aim of the current paper is to present a mimetic algorithm called the chaotic evolutionary programming Powell’s pattern search (CEPPS) algorithm for the solution of the multi-fuel economic load dispatch problem. In the CEPPS algorithm, the exploration process is maintained by chaotic evolutionary programming, whereas exploitation is taken care off by a pattern search. The proposed CEPPS has two variants based on the Gauss map and the tent map. Seven generalized benchmark test functions and six cases of the multi-fuel economic load dispatch problem are considered for the performance analysis. It is observed from the analysis that the CEPPS solution procedure based on the tent map exhibits superiority to obtain an excellent solution and better convergence characteristics than traditional chaotic evolutionary programming. Further, the performance investigation for the considered economic load dispatch shows that the Gauss map CEPPS solution procedure performs better than the tent map based CEPPS to obtain the solution of the multi-fuel economic dispatch problem.
Nirbhow Singh; Shakti Singh; Vikram Chopra; Mohd Aftab; S. Hussain; Taha Ustun. Chaotic Evolutionary Programming for an Engineering Optimization Problem. Applied Sciences 2021, 11, 2717 .
AMA StyleNirbhow Singh, Shakti Singh, Vikram Chopra, Mohd Aftab, S. Hussain, Taha Ustun. Chaotic Evolutionary Programming for an Engineering Optimization Problem. Applied Sciences. 2021; 11 (6):2717.
Chicago/Turabian StyleNirbhow Singh; Shakti Singh; Vikram Chopra; Mohd Aftab; S. Hussain; Taha Ustun. 2021. "Chaotic Evolutionary Programming for an Engineering Optimization Problem." Applied Sciences 11, no. 6: 2717.
In the present era, electrical power system is evolving to an inverter-dominated system from a synchronous machine-based system, with the hybrid power systems (HPS) and renewable energy generators (REGs) increasing penetration. These inverters dominated HPS have no revolving body, therefore, diminishing the overall grid inertia. Such a low system inertia could create issues for HPS with REG (HPSREG) such as system instability and lack of resilience under disturbances. A control strategy, therefore, is required in order to manage this task besides benefitting from the full potential of the REGs. A virtual inertia control for an HPSREG system built with the principle of fractional order (FO) by incorporation of proportional-integral-derivative (PID) controller and fuzzy logic controller (FLC) has been projected. It is utilized by adding virtual inertia into HPSREG system control loop and referred to as FO based fuzzy PID controller for this study. Simulation outcomes states that the advocated FO based fuzzy PID controller has superior control in frequency of the system under frequent load variations. It has been noted that the proposed control scheme exhibits improved efficiency in maintaining specific reference frequency and power tracking as well as disturbance diminution than optimal classic and FO-based controller. It has been validated that, the developed controller effectively delivers preferred frequency and power provision to a low-inertia HPSREG system against high load demand perturbation. In the presented paper, analysis based on sensitivity has also been performed and it has been found that the HPSREG system’s is not effected by system parameter and load variations.
Tarkeshwar Mahto; Rakesh Kumar; Hasmat Malik; S. Hussain; Taha Ustun. Fractional Order Fuzzy Based Virtual Inertia Controller Design for Frequency Stability in Isolated Hybrid Power Systems. Energies 2021, 14, 1634 .
AMA StyleTarkeshwar Mahto, Rakesh Kumar, Hasmat Malik, S. Hussain, Taha Ustun. Fractional Order Fuzzy Based Virtual Inertia Controller Design for Frequency Stability in Isolated Hybrid Power Systems. Energies. 2021; 14 (6):1634.
Chicago/Turabian StyleTarkeshwar Mahto; Rakesh Kumar; Hasmat Malik; S. Hussain; Taha Ustun. 2021. "Fractional Order Fuzzy Based Virtual Inertia Controller Design for Frequency Stability in Isolated Hybrid Power Systems." Energies 14, no. 6: 1634.
Renewable energy-based generators are constantly being deployed to future grids. It is expected that their share in overall generation will increase in the future. These novel devices have unknown characteristics and cause novel issues in power system operation. Traditional distribution networks have been operated as passive networks. These devices, such as smart inverters, change this paradigm completely. Due to these considerations, grid operators insist on enforcing strict grid-integration requirements. These rules are developed to ensure the impact of the connected devices is minimized and their behavior can be accounted for, at least to some extent. Testing different devices for different grid codes is a daunting task. Since such tests are undertaken in lab environment with manual control and data collection, they are prone to errors, time-consuming and inefficient. A solution is required to standardize and automate such tests. This will provide consistent testing ability and minimize testing times and errors due to human-intervention. This article presents the design and implementation of an integrated testing platform. Steps of lab equipment integration and associated challenges are presented along with their solutions. Several smart inverter behavior tests are executed, and results are presented. The test durations are compared with traditional test durations and the benefits are reported. It is discovered that use of such platform can increase the system testing efficiency by 85 % while minimizing human-errors, inconsistencies and man-hours required to run the tests.
Jun Hashimoto; Taha Selim Ustun; Masaichi Suzuki; Shuichi Sugahara; Michiyuki Hasegawa; Kenji Otani. Advanced Grid Integration Test Platform for Increased Distributed Renewable Energy Penetration in Smart Grids. IEEE Access 2021, 9, 34040 -34053.
AMA StyleJun Hashimoto, Taha Selim Ustun, Masaichi Suzuki, Shuichi Sugahara, Michiyuki Hasegawa, Kenji Otani. Advanced Grid Integration Test Platform for Increased Distributed Renewable Energy Penetration in Smart Grids. IEEE Access. 2021; 9 ():34040-34053.
Chicago/Turabian StyleJun Hashimoto; Taha Selim Ustun; Masaichi Suzuki; Shuichi Sugahara; Michiyuki Hasegawa; Kenji Otani. 2021. "Advanced Grid Integration Test Platform for Increased Distributed Renewable Energy Penetration in Smart Grids." IEEE Access 9, no. : 34040-34053.
Phasor Measurement Units (PMUs) are widely used to monitor the operating conditions of a Smart Grid (SG). The PMU communication network is, generally, a public wide area network, hence it is vulnerable to cyber-attacks. At present IEEE C37.118.2 is widely used as the communication standard for PMU communication. However, the IEEE C37.118.2 standard does not specify any security mechanism to protect the PMU data from cyber-attacks. Deviation in the transmitted data of PMUs may lead to devastating consequences such as blackouts in the grid. To mitigate cyberattacks on PMU, this paper proposes a security mechanism based on Key Distribution Scheme that ensures integrity along with confidentiality. This mechanism involves addition of new security fields to IEEE C37.118.2 message structure. The introduction of security mechanism imposes additional computational complexity on resource constraint PMU devices and addition of new security fields in PMU message structure increases overall message size which in turn increases communication delays. In order to assess the additional computational complexity and increased communication delays, an experimental set up consisting of PMU simulators and network emulator is developed in this paper. The developed PMU simulator generates IEEE C37.118.2 messages with proposed security mechanisms. Results validate the applicability of the proposed security mechanism in PMU networks without any repercussions.
S.M. Suhail Hussain; Shaik Mullapathi Farooq; Taha Selim Ustun. A Security Mechanism for IEEE C37.118.2 PMU Communication. IEEE Transactions on Industrial Electronics 2021, PP, 1 -1.
AMA StyleS.M. Suhail Hussain, Shaik Mullapathi Farooq, Taha Selim Ustun. A Security Mechanism for IEEE C37.118.2 PMU Communication. IEEE Transactions on Industrial Electronics. 2021; PP (99):1-1.
Chicago/Turabian StyleS.M. Suhail Hussain; Shaik Mullapathi Farooq; Taha Selim Ustun. 2021. "A Security Mechanism for IEEE C37.118.2 PMU Communication." IEEE Transactions on Industrial Electronics PP, no. 99: 1-1.
Smart grid technology enables active participation of the consumers to reschedule their energy consumption through demand response (DR). The price-based program in demand response indirectly induces consumers to dynamically vary their energy use patterns following different electricity prices. In this paper, a real-time price (RTP)-based demand response scheme is proposed for thermostatically controllable loads (TCLs) that contribute to a large portion of residential loads, such as air conditioners, refrigerators and heaters. Wind turbine generator (WTG) systems, solar thermal power systems (STPSs), diesel engine generators (DEGs), fuel cells (FCs) and aqua electrolyzers (AEs) are employed in a hybrid microgrid system to investigate the contribution of price-based demand response (PBDR) in frequency control. Simulation results show that the load frequency control scheme with dynamic PBDR improves the system’s stability and encourages economic operation of the system at both the consumer and generation level. Performance comparison of the genetic algorithm (GA) and salp swarm algorithm (SSA)-based controllers (proportional-integral (PI) or proportional integral derivative (PID)) is performed, and the hybrid energy system model with demand response shows the supremacy of SSA in terms of minimization of peak load and enhanced frequency stabilization of the system.
Abdul Latif; Manidipa Paul; Dulal Chandra Das; S. M. Suhail Hussain; Taha Selim Ustun. Price Based Demand Response for Optimal Frequency Stabilization in ORC Solar Thermal Based Isolated Hybrid Microgrid under Salp Swarm Technique. Electronics 2020, 9, 2209 .
AMA StyleAbdul Latif, Manidipa Paul, Dulal Chandra Das, S. M. Suhail Hussain, Taha Selim Ustun. Price Based Demand Response for Optimal Frequency Stabilization in ORC Solar Thermal Based Isolated Hybrid Microgrid under Salp Swarm Technique. Electronics. 2020; 9 (12):2209.
Chicago/Turabian StyleAbdul Latif; Manidipa Paul; Dulal Chandra Das; S. M. Suhail Hussain; Taha Selim Ustun. 2020. "Price Based Demand Response for Optimal Frequency Stabilization in ORC Solar Thermal Based Isolated Hybrid Microgrid under Salp Swarm Technique." Electronics 9, no. 12: 2209.
The power hardware-in-the-loop (PHIL) simulation has become a popular testing approach due to the flexibility it provides and the high-fidelity of its results. It is expected to be utilized as an advanced laboratory testing scheme to validate the grid support functions of distributed energy resources (DERs) because it can evaluate the interaction between the power system and DERs. Despite the strong demand to utilize the PHIL simulation for such testing, the literature that elaborates on the practical design of PHIL simulation based testing (hereafter called “PHIL testing”) environment including laboratory device setup, power system models, and test procedures is very limited. The simulation models, interfacing with the tested equipment, and data collection approaches are all different parameters that need to be fine-tuned for the successful execution of PHIL testing. It is vital for such successful test experiences to be shared to build universal knowledge around PHIL testing. In order to fill this knowledge gap, this paper presents such practical and essential techniques for the PHIL testing to share the knowledge for promotion of the PHIL simulation utilization. The development of PHIL testing environment to validate the smart inverter functions, i.e., volt-var function and frequency-watt function, is focused on in terms of laboratory setup, power system modeling, interfacing, and test procedure. The volt-var and frequency-watt functions of a 500 kW smart inverter of photovoltaic are validated on the basis of the presented techniques. Detailed test configurations, test procedures, and simulation models are presented along with obtained test results.
Hiroshi Kikusato; Taha Selim Ustun; Jun Hashimoto; Kenji Otani; Takayuki Nagakura; Yasutoshi Yoshioka; Ryo Maeda; Kenjiro Mori. Developing Power Hardware-in-the-Loop Based Testing Environment for Volt-Var and Frequency-Watt Functions of 500 kW Photovoltaic Smart Inverter. IEEE Access 2020, 8, 224135 -224144.
AMA StyleHiroshi Kikusato, Taha Selim Ustun, Jun Hashimoto, Kenji Otani, Takayuki Nagakura, Yasutoshi Yoshioka, Ryo Maeda, Kenjiro Mori. Developing Power Hardware-in-the-Loop Based Testing Environment for Volt-Var and Frequency-Watt Functions of 500 kW Photovoltaic Smart Inverter. IEEE Access. 2020; 8 (99):224135-224144.
Chicago/Turabian StyleHiroshi Kikusato; Taha Selim Ustun; Jun Hashimoto; Kenji Otani; Takayuki Nagakura; Yasutoshi Yoshioka; Ryo Maeda; Kenjiro Mori. 2020. "Developing Power Hardware-in-the-Loop Based Testing Environment for Volt-Var and Frequency-Watt Functions of 500 kW Photovoltaic Smart Inverter." IEEE Access 8, no. 99: 224135-224144.
Smart metering technology plays a key role in Advanced Metering Infrastructure (AMI) in Smart Grid (SG). Smart Meters (SM) measure Power Consumption Data (PCD) of household devices and send it to DSO (Distributed System Operator) for further processing. DSO utilizes PCD for different applications such as monthly billing, demand response and other applications related to power system operation and energy markets. Secure communication between SM and DSO is of paramount importance. Certificate-based authentication is a de facto mechanism in ensuring legitimacy of communicating parties. But it incurs more computational delay as it involves intensive processes such as certificate management, revocation, and verification. ID-based authentication eliminates the risks associated with certificate management. A key agreement protocol based on ID-based authentication mechanism is proposed and analyzed for computational performance. This paper analyzes and evaluates both authentication mechanisms: certificate and ID-based mechanism based on computational times for suitability in AMI network. The experimental results show that ID-based authentication and key agreement mechanism are suitable for securing communication in AMI network.
Shaik Mullapathi Farooq; S. M. Suhail Hussain; Taha Selim Ustun; Atif Iqbal. Using ID-Based Authentication and Key Agreement Mechanism for Securing Communication in Advanced Metering Infrastructure. IEEE Access 2020, 8, 210503 -210512.
AMA StyleShaik Mullapathi Farooq, S. M. Suhail Hussain, Taha Selim Ustun, Atif Iqbal. Using ID-Based Authentication and Key Agreement Mechanism for Securing Communication in Advanced Metering Infrastructure. IEEE Access. 2020; 8 (99):210503-210512.
Chicago/Turabian StyleShaik Mullapathi Farooq; S. M. Suhail Hussain; Taha Selim Ustun; Atif Iqbal. 2020. "Using ID-Based Authentication and Key Agreement Mechanism for Securing Communication in Advanced Metering Infrastructure." IEEE Access 8, no. 99: 210503-210512.
Reactive power management in microgrids with high penetration of distributed renewable energy sources (DRESs) is challenging. The intermittent generation of DRES makes the power management cumbersome. Generally, Flexible AC Transmission System (FACTS) devices such as Distribution Static Compensator (DSTATCOM) are employed for reactive power compensation in microgrids. However, for effective results in microgrids, coordinated operation between DSTATCOM and Distributed Energy Resources (DERs) is required. In this paper, IEC 61850 communication is proposed for realizing coordinated operation between microgrid controller (MGCC), DSTATCOM and DERs. In microgrids, there may be large number of DERs dispersed over a large area. Hence, the underlying communication network technology for IEC 61850 communication must be highly scalable with wide range. Recently developed communication technology Long Term Evolution (LTE) is a promising solution since it offers high data rates, reliability, scalability and longer range. In this paper, the developed IEC 61850 based reactive power management system is tested with the LTE technology and the performance evaluation tests have been performed. Firstly, IEC 61850 messages have been mapped on LTE stack to enable their transmission. Then, simulations over a network emulator have been performed to evaluate the performance of IEC 61850 communication message exchanges over LTE network in terms of End to End (ETE) delays.
S. M. Suhail Hussain; Mohd Asim Aftab; Taha Selim Ustun. Performance Analysis of IEC 61850 Messages in LTE Communication for Reactive Power Management in Microgrids. Energies 2020, 13, 6011 .
AMA StyleS. M. Suhail Hussain, Mohd Asim Aftab, Taha Selim Ustun. Performance Analysis of IEC 61850 Messages in LTE Communication for Reactive Power Management in Microgrids. Energies. 2020; 13 (22):6011.
Chicago/Turabian StyleS. M. Suhail Hussain; Mohd Asim Aftab; Taha Selim Ustun. 2020. "Performance Analysis of IEC 61850 Messages in LTE Communication for Reactive Power Management in Microgrids." Energies 13, no. 22: 6011.
Deep penetration of distributed generators have created several stability and operation issues for power systems. In order to address these, inverters with advanced capabilities such as frequency and reactive power support the grid. Known also as Smart Inverters (SIs), these devices are highly dynamic and contribute to the power flow in the system. Notwithstanding their benefits, such dynamic devices are new to distribution networks. Power system operators are very reluctant toward such changes as they may cause unknown issues. In order to alleviate these concerns and facilitate SIs integration to the grid, behavior studies are required. To that end, this paper presents a power hardware-in-the-loop test set up and tests that are performed to study fault behavior of SIs connected to distribution networks. The details of the software model, SI integration with the real-time simulator, test results, and their analyses are presented. This experience shows that it is not trivial to connect such novel devices with simulation environments. Adjustments are required on both software and hardware fronts on a case-by-case basis. The encountered integration issues and their solutions are presented herein. The fault behavior of the SI with respect to the fault location is documented. It is observed that for faults that are close to SIs, momentary cessation of generation is observed. This needs to be tackled by device manufacturers as this phenomenon is very detrimental to health of a power system under fault conditions. Extensive PHIL test results show that several factors affect the fault behavior of an SI: fault location and its duration, SI mode of operation as well as extra devices housed in the casing. These results and their in-depth analyses are presented for a thorough understanding of SI behavior under fault conditions.
Taha Selim Ustun; Shuichi Sugahara; Masaichi Suzuki; Jun Hashimoto; Kenji Otani. Power Hardware in-the-Loop Testing to Analyze Fault Behavior of Smart Inverters in Distribution Networks. Sustainability 2020, 12, 9365 .
AMA StyleTaha Selim Ustun, Shuichi Sugahara, Masaichi Suzuki, Jun Hashimoto, Kenji Otani. Power Hardware in-the-Loop Testing to Analyze Fault Behavior of Smart Inverters in Distribution Networks. Sustainability. 2020; 12 (22):9365.
Chicago/Turabian StyleTaha Selim Ustun; Shuichi Sugahara; Masaichi Suzuki; Jun Hashimoto; Kenji Otani. 2020. "Power Hardware in-the-Loop Testing to Analyze Fault Behavior of Smart Inverters in Distribution Networks." Sustainability 12, no. 22: 9365.