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Prof. Igor Kuzle
University of Zagreb, Faculty of Electrical Engineering and Computing, Unska 3, 10000 Zagreb, Croatia

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Research Keywords & Expertise

0 Renewable Energy Systems
0 Smart Grids
0 Power system dynamics and control
0 WAMS
0 Maintenance of power system elements

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Power system dynamics and control
WAMS

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Journal article
Published: 23 March 2021 in IEEE Transactions on Energy Conversion
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This paper presents a nonlinear dynamic simulation model of an ultracapacitor (UC) bank and the associated control system. The control system at hand consists of two levels: the lower level controls the inverter of the UC bank, while the upper control level is responsible for providing charging/discharging active power set points to be followed by the lower control level. This paper focuses on the development of the upper control level for frequency control. Specifically, two simulation case studies are developed so as to assess the performance of the proposed control framework. In the first case study the upper control level is developed using a classical Proportional-Integral-Derivative (PID) controller. In the second case study the upper control level is devised using a Model Predictive Control (MPC) algorithm based on internal linear prediction model of a nonlinear UC bank. In both cases, a nonlinear UC bank simulation model is used. The simulation case studies are modelled and tested in Matlab/Simulink. The response of the MPC-controlled UC bank is compared to the PID-controlled UC bank. The simulation results show that the MPC algorithm outperforms the conventional PID controller.

ACS Style

Mateo Beus; Matej Krpan; Igor Kuzle; Hrvoje Pandzic; Alessandra Parisio. A Model Predictive Control Approach to Operation Optimization of an Ultracapacitor Bank for Frequency Control. IEEE Transactions on Energy Conversion 2021, 36, 1743 -1755.

AMA Style

Mateo Beus, Matej Krpan, Igor Kuzle, Hrvoje Pandzic, Alessandra Parisio. A Model Predictive Control Approach to Operation Optimization of an Ultracapacitor Bank for Frequency Control. IEEE Transactions on Energy Conversion. 2021; 36 (3):1743-1755.

Chicago/Turabian Style

Mateo Beus; Matej Krpan; Igor Kuzle; Hrvoje Pandzic; Alessandra Parisio. 2021. "A Model Predictive Control Approach to Operation Optimization of an Ultracapacitor Bank for Frequency Control." IEEE Transactions on Energy Conversion 36, no. 3: 1743-1755.

Journal article
Published: 24 February 2021 in IEEE Transactions on Smart Grid
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The most commonly used method for including photovoltaic system in the control of system frequency is to operate a PV power plant at reduced power while maintaining a specific amount of available power reserve. Such operating regime, often referred to as de-loaded, can cause additional costs and, consequently, determining a required power reduction becomes vitally important. This paper introduces a method for determining the required minimum de-loaded reserve of a photovoltaic system. To achieve the desired result a parabolic approximation of the system frequency response is developed to derive an explicit function of the frequency nadir. Taking this approximation into consideration, a method for determining the required minimum de-loaded margin was developed and tested in a case-study which observed a small power system consisting of several power plants. To demonstrate the accuracy of the proposed parabolic approximation, the calculated approximate values of the frequency nadir were compared to the values of the frequency nadir obtained from the frequency response simulations performed on the power system model developed in MATLAB/Simulink.

ACS Style

Tomislav Baskarad; Igor Kuzle; Ninoslav Holjevac. Photovoltaic System Power Reserve Determination Using Parabolic Approximation of Frequency Response. IEEE Transactions on Smart Grid 2021, 12, 3175 -3184.

AMA Style

Tomislav Baskarad, Igor Kuzle, Ninoslav Holjevac. Photovoltaic System Power Reserve Determination Using Parabolic Approximation of Frequency Response. IEEE Transactions on Smart Grid. 2021; 12 (4):3175-3184.

Chicago/Turabian Style

Tomislav Baskarad; Igor Kuzle; Ninoslav Holjevac. 2021. "Photovoltaic System Power Reserve Determination Using Parabolic Approximation of Frequency Response." IEEE Transactions on Smart Grid 12, no. 4: 3175-3184.

Journal article
Published: 19 February 2021 in IEEE Transactions on Power Systems
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The paper presents accurate and simple dynamic model of a supercapacitor bank system for power system dynam- ics studies. The proposed model is derived from a detailed RC circuit representation. Furthermore, a complete control system of the supercapacitor bank is also presented. The proposed model is easy to integrate in any power system simulation software and consists of only up to four standard datasheet parameters. The performance of the proposed model in grid frequency control and low-voltage ride through is illustrated on IEEE 14-bus test system in DIgSILENT PowerFactory. It is shown that in case of transient stability simulations the ideal (simplified) model of the supercapacitor can be used while in case of frequency control the ideal representation may not always be appropriate.

ACS Style

Matej Krpan; Igor Kuzle; Ana Radovanovic; Jovica V. Milanovic. Modelling of Supercapacitor Banks for Power System Dynamics Studies. IEEE Transactions on Power Systems 2021, 36, 3987 -3996.

AMA Style

Matej Krpan, Igor Kuzle, Ana Radovanovic, Jovica V. Milanovic. Modelling of Supercapacitor Banks for Power System Dynamics Studies. IEEE Transactions on Power Systems. 2021; 36 (5):3987-3996.

Chicago/Turabian Style

Matej Krpan; Igor Kuzle; Ana Radovanovic; Jovica V. Milanovic. 2021. "Modelling of Supercapacitor Banks for Power System Dynamics Studies." IEEE Transactions on Power Systems 36, no. 5: 3987-3996.

Journal article
Published: 17 February 2021 in Energies
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This paper presents a high-level overview of the integration of renewable energy sources (RES), primarily wind and solar, into the electric power system (EPS) in Croatia. It presents transmission system integration aspects for the particular case of this country. It explains the current situation and technical characteristics of the current conventional generation units and currently installed wind energy capacities. Based on the current situation future development scenario is determined and used to evaluate the impacts of the wide-scale integration of renewables. Grid connections aspects, power balancing, market participation, and inertia reduction aspects are considered. Furthermore, some specifics of both solar and wind integration are discussed identifying problems and potential solutions. Primarily through the provision of the inertial response of both solar and wind and through better forecasting of wind production. Finally, the outlook for the Croatian power system is given, that will most probably double its RES capacity in the coming 3-year period and a certain level of investments and changes of current operational practices will need to be provided.

ACS Style

Ninoslav Holjevac; Tomislav Baškarad; Josip Đaković; Matej Krpan; Matija Zidar; Igor Kuzle. Challenges of High Renewable Energy Sources Integration in Power Systems—The Case of Croatia. Energies 2021, 14, 1047 .

AMA Style

Ninoslav Holjevac, Tomislav Baškarad, Josip Đaković, Matej Krpan, Matija Zidar, Igor Kuzle. Challenges of High Renewable Energy Sources Integration in Power Systems—The Case of Croatia. Energies. 2021; 14 (4):1047.

Chicago/Turabian Style

Ninoslav Holjevac; Tomislav Baškarad; Josip Đaković; Matej Krpan; Matija Zidar; Igor Kuzle. 2021. "Challenges of High Renewable Energy Sources Integration in Power Systems—The Case of Croatia." Energies 14, no. 4: 1047.

Editorial
Published: 01 July 2020 in International Journal of Electrical Power & Energy Systems
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ACS Style

Igor Kuzle; Mirna Gržanić; Ninoslav Holjevac; Tomislav Capuder; Hrvoje Pandžić. The future of energy. International Journal of Electrical Power & Energy Systems 2020, 123, 106318 .

AMA Style

Igor Kuzle, Mirna Gržanić, Ninoslav Holjevac, Tomislav Capuder, Hrvoje Pandžić. The future of energy. International Journal of Electrical Power & Energy Systems. 2020; 123 ():106318.

Chicago/Turabian Style

Igor Kuzle; Mirna Gržanić; Ninoslav Holjevac; Tomislav Capuder; Hrvoje Pandžić. 2020. "The future of energy." International Journal of Electrical Power & Energy Systems 123, no. : 106318.

Journal article
Published: 01 July 2020 in International Journal of Electrical Power & Energy Systems
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ACS Style

Wujing Huang; Ning Zhang; Yi Wang; Tomislav Capuder; Igor Kuzle; Chongqing Kang. Matrix modeling of energy hub with variable energy efficiencies. International Journal of Electrical Power & Energy Systems 2020, 119, 1 .

AMA Style

Wujing Huang, Ning Zhang, Yi Wang, Tomislav Capuder, Igor Kuzle, Chongqing Kang. Matrix modeling of energy hub with variable energy efficiencies. International Journal of Electrical Power & Energy Systems. 2020; 119 ():1.

Chicago/Turabian Style

Wujing Huang; Ning Zhang; Yi Wang; Tomislav Capuder; Igor Kuzle; Chongqing Kang. 2020. "Matrix modeling of energy hub with variable energy efficiencies." International Journal of Electrical Power & Energy Systems 119, no. : 1.

Journal article
Published: 24 April 2020 in International Journal of Electrical Power & Energy Systems
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Increased wind energy penetration influences the power system dynamic response to transient disturbances. Replacement of conventional production units with converter-connected wind turbines reduces natural power system inertia contained in rotational masses of synchronously connected turbine-generator units, therefore creating low-inertia power systems. Such a transition has an adverse effect on system resilience to disturbances and on the capability to maintain stable operation. This research examines the impact of high regional wind power production on system transient stability in the case of island operation of the Croatian power system. The system is divided into four geographical areas modeled as four centers of inertia with aggregated parameters. The study investigated initial transient RoCoF values in different areas for current and future wind capacity share scenarios, loading data, and primary frequency regulation settings. The modeling and scenario analysis have been performed on a detailed phasor power system model in the MATLAB/Simulink environment.

ACS Style

Josip Đaković; Matej Krpan; Perica Ilak; Tomislav Baškarad; Igor Kuzle. Impact of wind capacity share, allocation of inertia and grid configuration on transient RoCoF: The case of the Croatian power system. International Journal of Electrical Power & Energy Systems 2020, 121, 106075 .

AMA Style

Josip Đaković, Matej Krpan, Perica Ilak, Tomislav Baškarad, Igor Kuzle. Impact of wind capacity share, allocation of inertia and grid configuration on transient RoCoF: The case of the Croatian power system. International Journal of Electrical Power & Energy Systems. 2020; 121 ():106075.

Chicago/Turabian Style

Josip Đaković; Matej Krpan; Perica Ilak; Tomislav Baškarad; Igor Kuzle. 2020. "Impact of wind capacity share, allocation of inertia and grid configuration on transient RoCoF: The case of the Croatian power system." International Journal of Electrical Power & Energy Systems 121, no. : 106075.

Journal article
Published: 20 February 2020 in International Journal of Electrical Power & Energy Systems
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Generic dynamic models of hydraulic turbines are unable to capture power oscillations phenomena originating from a torque disturbance on a single runner blade. In this paper, an improved dynamic model of a double-regulated hydraulic turbine which takes into account torque oscillations identified from draft tube pressure measurements was presented. It was experimentally identified that specific power oscillations of a bulb turbine operating with low tailwater level can be connected to cavitation-related phenomena on a single runner blade. Furthermore, it was shown that these oscillations do not originate from grid fault-induced resonance between the turbine rotor and generator, nor from the excitation system. The proposed simulation model was validated against measurement data of hydro power plant Dubrava and the validation shows good agreement between measured and simulated results.

ACS Style

Miljenko Brezovec; Igor Kuzle; Matej Krpan; Ninoslav Holjevac. Improved dynamic model of a bulb turbine-generator for analysing oscillations caused by mechanical torque disturbance on a runner blade. International Journal of Electrical Power & Energy Systems 2020, 119, 105929 .

AMA Style

Miljenko Brezovec, Igor Kuzle, Matej Krpan, Ninoslav Holjevac. Improved dynamic model of a bulb turbine-generator for analysing oscillations caused by mechanical torque disturbance on a runner blade. International Journal of Electrical Power & Energy Systems. 2020; 119 ():105929.

Chicago/Turabian Style

Miljenko Brezovec; Igor Kuzle; Matej Krpan; Ninoslav Holjevac. 2020. "Improved dynamic model of a bulb turbine-generator for analysing oscillations caused by mechanical torque disturbance on a runner blade." International Journal of Electrical Power & Energy Systems 119, no. : 105929.

Journal article
Published: 01 February 2020 in Tehnicki vjesnik - Technical Gazette
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ACS Style

Zoran Zbunjak; Igor Kuzle; Dino Mađar. Overload Mitigation SIPS Based on DC Model Optimization and PMU Technology. Tehnicki vjesnik - Technical Gazette 2020, 27, 213 -220.

AMA Style

Zoran Zbunjak, Igor Kuzle, Dino Mađar. Overload Mitigation SIPS Based on DC Model Optimization and PMU Technology. Tehnicki vjesnik - Technical Gazette. 2020; 27 (1):213-220.

Chicago/Turabian Style

Zoran Zbunjak; Igor Kuzle; Dino Mađar. 2020. "Overload Mitigation SIPS Based on DC Model Optimization and PMU Technology." Tehnicki vjesnik - Technical Gazette 27, no. 1: 213-220.

Journal article
Published: 06 December 2019 in IET Renewable Power Generation
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The paper introduces, describes and analyses the specific power oscillations in hydroelectric power plant Dubrava that can appear in large bulb turbines operating with low tailwater levels. The procedure for the identification of the cause of oscillations is described and it is experimentally shown that the cause of power oscillations is a disturbance on a specific runner blade. The physical background of the cavitation-related phenomena that causes these oscillations is presented. Furthermore, it is shown that neither the automatic voltage regulator nor the transmission network disturbance is the source of oscillations, while the power system stabiliser can only partially damp them. Power oscillations reduce the average power output due to the operation in the unsteady output zone. These oscillations can cause damage to the equipment and reduce its lifespan. The effectiveness of various measures for treatment of these oscillations is discussed. A simple model for simulation of these oscillations is shown and verified against measurements.

ACS Style

Miljenko Brezovec; Igor Kuzle; Matej Krpan; Ninoslav Holjevac. Analysis and treatment of power oscillations in hydropower plant Dubrava. IET Renewable Power Generation 2019, 14, 80 -89.

AMA Style

Miljenko Brezovec, Igor Kuzle, Matej Krpan, Ninoslav Holjevac. Analysis and treatment of power oscillations in hydropower plant Dubrava. IET Renewable Power Generation. 2019; 14 (1):80-89.

Chicago/Turabian Style

Miljenko Brezovec; Igor Kuzle; Matej Krpan; Ninoslav Holjevac. 2019. "Analysis and treatment of power oscillations in hydropower plant Dubrava." IET Renewable Power Generation 14, no. 1: 80-89.

Journal article
Published: 13 November 2019 in Electric Power Systems Research
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Multi-energy systems (MES) contribute to increasing energy utilization efficiency and renewable energy accommodation by coupling multiple energy sectors. Beijing is planning to build a subsidiary administrative center in Tongzhou District. A new MES will be built in this center from scratch to jointly meet electricity, heat and cooling demands. This raises the need for optimizing the configuration of MES from scratch at the planning stage. In this paper, the configuration planning of the MES in Beijing’s new subsidiary administrative center is conducted using a two-stage mixed-integer linear programming (MILP) approach based on the energy hub (EH) model. Given the load demand, distributed renewable energy sources, energy prices and candidate system component parameters, the MES configuration planning, equipment selection and capacity planning are jointly managed without limiting the possibility of MES configuration. A sensitivity analysis is performed to show the impacts of load profiles and energy prices on the optimal MES configuration. Operation simulations are carried out based on the obtained optimal planning scheme and another four alternative planning schemes presented by Beijing subsidiary administrative center. The operating cost, CO2 emission and overall system efficiency of each planning scheme are calculated and compared with each other.

ACS Style

Wujing Huang; Ning Zhang; Chongqing Kang; Tomislav Capuder; Ninoslav Holjevac; Igor Kuzle. Beijing subsidiary administrative center multi-energy systems: An optimal configuration planning. Electric Power Systems Research 2019, 179, 106082 .

AMA Style

Wujing Huang, Ning Zhang, Chongqing Kang, Tomislav Capuder, Ninoslav Holjevac, Igor Kuzle. Beijing subsidiary administrative center multi-energy systems: An optimal configuration planning. Electric Power Systems Research. 2019; 179 ():106082.

Chicago/Turabian Style

Wujing Huang; Ning Zhang; Chongqing Kang; Tomislav Capuder; Ninoslav Holjevac; Igor Kuzle. 2019. "Beijing subsidiary administrative center multi-energy systems: An optimal configuration planning." Electric Power Systems Research 179, no. : 106082.

Journal article
Published: 24 September 2019 in International Journal of Electrical Power & Energy Systems
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This paper presents the proposal of the methodology for the development of realistic P-Q capability chart at point of common coupling of photovoltaic power plant, comprised of multiple inverter units and connected to medium voltage grid. Theoretical equations for the contribution to the total active and reactive power of the plant are derived for all plant components: inverters, low voltage cables, transformers, medium voltage cables and auxiliary consumption. It is concluded that equations for total active and reactive power are dependable on only two changing variables: voltage and momentary generation power of inverters. Equations for maximum and minimum values for total active and reactive power are further derived when known maximum and minimum values of changing variables are entered to equations, and these are presented on graph diagram as curves. Area in P-Q diagram within such calculated border curves is area of possible power plant operation points at the point of common coupling. Such representation model of this type of plant has not been proposed before. The proposed methodology has been applied to the case study plant and its operation P-Q diagram is constructed Measurements conducted on this case study plant are compared with calculated values for necessary corrections to the model.

ACS Style

Mihovil Ivas; Ante Marušić; Juraj George Havelka; Igor Kuzle. P-Q capability chart analysis of multi-inverter photovoltaic power plant connected to medium voltage grid. International Journal of Electrical Power & Energy Systems 2019, 116, 105521 .

AMA Style

Mihovil Ivas, Ante Marušić, Juraj George Havelka, Igor Kuzle. P-Q capability chart analysis of multi-inverter photovoltaic power plant connected to medium voltage grid. International Journal of Electrical Power & Energy Systems. 2019; 116 ():105521.

Chicago/Turabian Style

Mihovil Ivas; Ante Marušić; Juraj George Havelka; Igor Kuzle. 2019. "P-Q capability chart analysis of multi-inverter photovoltaic power plant connected to medium voltage grid." International Journal of Electrical Power & Energy Systems 116, no. : 105521.

Journal article
Published: 17 September 2019 in Electric Power Systems Research
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Power converter technology partially or fully electrically decouples the wind energy source from the grid which results in the decrease of system inertia. However, when those units participate in virtual inertial response their electromechanical dynamics become coupled to the grid electromechanical modes. To date, there were no comprehensive studies on how do different elements and parameters of a wind energy conversion system (WECS) impact its virtual inertial response provision. This is important from the standpoint of understanding the expected wind farm response during frequency containment process as well as from the standpoint of developing better inertial response controllers. In this paper we have investigated how do operating point, line-side and machine-side converter, phase-locked loop and pitch angle control impact the inertial response of the total power controlled type III WECS (DFIG) which is one of the most common wind turbine topologies used today. We show that the operating point, pitch angle control and outer loop of the machine-side converter have a visible impact on strength of the inertial response, while other elements do not and some can even be neglected in inertial response studies.

ACS Style

Matej Krpan; Igor Kuzle. Dynamic characteristics of virtual inertial response provision by DFIG-based wind turbines. Electric Power Systems Research 2019, 178, 106005 .

AMA Style

Matej Krpan, Igor Kuzle. Dynamic characteristics of virtual inertial response provision by DFIG-based wind turbines. Electric Power Systems Research. 2019; 178 ():106005.

Chicago/Turabian Style

Matej Krpan; Igor Kuzle. 2019. "Dynamic characteristics of virtual inertial response provision by DFIG-based wind turbines." Electric Power Systems Research 178, no. : 106005.

Journal article
Published: 03 September 2019 in Energies
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System integrity protection schemes (SIPS) are schemes that can, under potentially hazardous conditions, prevent a complete blackout of endangered parts of an electrical power system (EPS). The main objective of SIPS is to monitor the state of the power transmission network in real time and to react in emergency cases. This paper explores the use of phasor measurement unit (PMU) technology for the development of SIPS as a part of wide-area monitoring, protection, and control (WAMPAC) systems. A new SIPS development method is described using the experience from the real-time operation. The developed optimal bus-splitting scheme identifies potential actions that can eliminate or reduce power system overloads and protect the integrity of the power system. An optimal bus-splitting scheme based on a DC power flow model and PMU measurements is given as an example and is explained and tested on an IEEE 14 bus test system. Conducted simulations indicate that the described SIPS methodology supported by the PMU measurements can mitigate potential overloads of the observed network part.

ACS Style

Zoran Zbunjak; Igor Kuzle. System Integrity Protection Scheme (SIPS) Development and an Optimal Bus-Splitting Scheme Supported by Phasor Measurement Units (PMUs). Energies 2019, 12, 3404 .

AMA Style

Zoran Zbunjak, Igor Kuzle. System Integrity Protection Scheme (SIPS) Development and an Optimal Bus-Splitting Scheme Supported by Phasor Measurement Units (PMUs). Energies. 2019; 12 (17):3404.

Chicago/Turabian Style

Zoran Zbunjak; Igor Kuzle. 2019. "System Integrity Protection Scheme (SIPS) Development and an Optimal Bus-Splitting Scheme Supported by Phasor Measurement Units (PMUs)." Energies 12, no. 17: 3404.

Journal article
Published: 19 June 2019 in IEEE Access
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ACS Style

Adnan Secic; Matej Krpan; Igor Kuzle. Vibro-Acoustic Methods in the Condition Assessment of Power Transformers: A Survey. IEEE Access 2019, 7, 83915 -83931.

AMA Style

Adnan Secic, Matej Krpan, Igor Kuzle. Vibro-Acoustic Methods in the Condition Assessment of Power Transformers: A Survey. IEEE Access. 2019; 7 ():83915-83931.

Chicago/Turabian Style

Adnan Secic; Matej Krpan; Igor Kuzle. 2019. "Vibro-Acoustic Methods in the Condition Assessment of Power Transformers: A Survey." IEEE Access 7, no. : 83915-83931.

Journal article
Published: 18 December 2018 in Energies
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More and more countries and utilities are trying to develop smart grid projects to make transformation of their power infrastructure towards future grids with increased share of renewable energy production and near zero emissions. The intermittent nature of solar and wind power can in general cause large problems for power system control. Parallel to this process, the aging of existing infrastructure also imposes requirements to utility budgets in the form of a need for large capital investments in reconstruction or maintenance of key equipment. Synchrophasor and other synchronized measurement technologies are setting themselves as one of the solutions for larger wind power integration. With that aim, in this paper one possible solution for wind power control through data mining algorithms used on a large quantity of data gathered from phasor measurement units (PMU) is described. Developed model and algorithm are tested on an IEEE 14 bus test system as well as on real measurements made on wind power plants currently in operation. One such wind power plant is connected to the distribution grid and the other one to the transmission grid. Results are analyzed and compared.

ACS Style

Mario Klarić; Igor Kuzle; Ninoslav Holjevac. Wind Power Monitoring and Control Based on Synchrophasor Measurement Data Mining. Energies 2018, 11, 3525 .

AMA Style

Mario Klarić, Igor Kuzle, Ninoslav Holjevac. Wind Power Monitoring and Control Based on Synchrophasor Measurement Data Mining. Energies. 2018; 11 (12):3525.

Chicago/Turabian Style

Mario Klarić; Igor Kuzle; Ninoslav Holjevac. 2018. "Wind Power Monitoring and Control Based on Synchrophasor Measurement Data Mining." Energies 11, no. 12: 3525.

Journal article
Published: 01 September 2018 in Tehnicki vjesnik - Technical Gazette
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ACS Style

Mario Perić; Tomislav Plavšić; Igor Kuzle. New Approach for Stochastic Modelling of Microgrid Containing CHP. Tehnicki vjesnik - Technical Gazette 2018, 25, 354 -365.

AMA Style

Mario Perić, Tomislav Plavšić, Igor Kuzle. New Approach for Stochastic Modelling of Microgrid Containing CHP. Tehnicki vjesnik - Technical Gazette. 2018; 25 (Supplement):354-365.

Chicago/Turabian Style

Mario Perić; Tomislav Plavšić; Igor Kuzle. 2018. "New Approach for Stochastic Modelling of Microgrid Containing CHP." Tehnicki vjesnik - Technical Gazette 25, no. Supplement: 354-365.

Conference paper
Published: 01 August 2018 in 2018 IEEE Power & Energy Society General Meeting (PESGM)
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Design process of the Wide area monitoring, protection and control system (WAMPAC) in control rooms consists of many project phases. Crucial part is to determine parameters for alarms triggering and setting parameters for control and protection modules. Integral segment is to define key performance indices (KPIs) through verified simulation models. Therefore, simulation scenarios were created to define key performance indices for both normal operation events and for various disturbances in the transmission network. Most significant results for setting of angle stability protection parameters are presented in this paper.

ACS Style

Igor Ivankovic; Igor Kuzle; Ninoslav Holjevac. Key Performance Indicies for Angle Stability Protection Function in WAMPAC System. 2018 IEEE Power & Energy Society General Meeting (PESGM) 2018, 1 -5.

AMA Style

Igor Ivankovic, Igor Kuzle, Ninoslav Holjevac. Key Performance Indicies for Angle Stability Protection Function in WAMPAC System. 2018 IEEE Power & Energy Society General Meeting (PESGM). 2018; ():1-5.

Chicago/Turabian Style

Igor Ivankovic; Igor Kuzle; Ninoslav Holjevac. 2018. "Key Performance Indicies for Angle Stability Protection Function in WAMPAC System." 2018 IEEE Power & Energy Society General Meeting (PESGM) , no. : 1-5.

Journal article
Published: 20 July 2018 in International Journal of Electrical Power & Energy Systems
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Energy storage is gaining an important role in modern power systems with high share of renewable energy sources. Specifically, large-scale battery storage units (BSUs) are an attractive solution due to their modularity, fast response and ongoing cost reduction. This paper aims to formulate, analyze and clarify the role of merchant-owned BSUs in the day-ahead electricity market. It defines virtual storage plant (VSP) as a set of BSUs distributed across the network. A VSP offering model is formulated as a bilevel program in which the upper-level problem represents the VSP profit maximization and operation, while the lower-level problem simulates market clearing and price formation. This mathematical problem with equilibrium constraints (MPEC) is converted into a mixed-integer linear program (MILP). This is afterwards expanded to a game of multiple VSPs formulating an equilibrium problem with equilibrium constraints (EPEC), which is solved using the diagonalization procedure. The proposed model is applied to an updated IEEE RTS-96 system. We evaluate the impact VSPs have on the locational marginal prices and compare the coordinated approach (all BSUs operated under a single VSP), i.e. the MPEC formulation, to the competitive approach (multiple VSPs competing for profit), i.e. the EPEC formulation.

ACS Style

Kristina Pandžić; Hrvoje Pandžić; Igor Kuzle. Virtual storage plant offering strategy in the day-ahead electricity market. International Journal of Electrical Power & Energy Systems 2018, 104, 401 -413.

AMA Style

Kristina Pandžić, Hrvoje Pandžić, Igor Kuzle. Virtual storage plant offering strategy in the day-ahead electricity market. International Journal of Electrical Power & Energy Systems. 2018; 104 ():401-413.

Chicago/Turabian Style

Kristina Pandžić; Hrvoje Pandžić; Igor Kuzle. 2018. "Virtual storage plant offering strategy in the day-ahead electricity market." International Journal of Electrical Power & Energy Systems 104, no. : 401-413.

Conference paper
Published: 01 June 2018 in 2018 Power Systems Computation Conference (PSCC)
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ACS Style

Ninoslav Holjevac; Tomislav Capuder; Igor Kuzle; Ning Zhang; Chongquing Kang. Modelling Aspects of Flexible Multi-Energy Microgrids. 2018 Power Systems Computation Conference (PSCC) 2018, 1 .

AMA Style

Ninoslav Holjevac, Tomislav Capuder, Igor Kuzle, Ning Zhang, Chongquing Kang. Modelling Aspects of Flexible Multi-Energy Microgrids. 2018 Power Systems Computation Conference (PSCC). 2018; ():1.

Chicago/Turabian Style

Ninoslav Holjevac; Tomislav Capuder; Igor Kuzle; Ning Zhang; Chongquing Kang. 2018. "Modelling Aspects of Flexible Multi-Energy Microgrids." 2018 Power Systems Computation Conference (PSCC) , no. : 1.