This page has only limited features, please log in for full access.
This paper proposes a two-layer in-depth secured management architecture for the optimal operation of energy internet in hybrid microgrids considering wind turbines, photovoltaics, fuel cell unit, and microturbines. In the physical layer of the proposed architecture, the operation of the grid is formulated as a single objective problem that is solved using teacher learning-based optimization (TLBO). Regarding the cyber layer of the proposed architecture, a two-level intrusion detection system (IDS) is proposed to detect various cyber-attacks (i.e. Sybil attacks, spoofing attacks, false data injection attacks) on wireless-based advanced metering infrastructures. The sequential probability ratio testing (SPRT) approach is utilized in both levels of the proposed IDS to detect cyber-attacks based on a sequence of anomalies rather than only one piece of evidence. The feasibility and performance of the proposed architecture are examined on IEEE 33-bus test system and the results are provided for both islanded and grid-connected operation modes.
Mojtaba Mohammadi; Abdollah Kavousi-Fard; Morteza Dabbaghjamanesh; Amir Farughian; Abbas Khosravi. Effective Management of Energy Internet in Renewable Hybrid Microgrids: A Secured Data Driven Resilient Architecture. IEEE Transactions on Industrial Informatics 2021, PP, 1 -1.
AMA StyleMojtaba Mohammadi, Abdollah Kavousi-Fard, Morteza Dabbaghjamanesh, Amir Farughian, Abbas Khosravi. Effective Management of Energy Internet in Renewable Hybrid Microgrids: A Secured Data Driven Resilient Architecture. IEEE Transactions on Industrial Informatics. 2021; PP (99):1-1.
Chicago/Turabian StyleMojtaba Mohammadi; Abdollah Kavousi-Fard; Morteza Dabbaghjamanesh; Amir Farughian; Abbas Khosravi. 2021. "Effective Management of Energy Internet in Renewable Hybrid Microgrids: A Secured Data Driven Resilient Architecture." IEEE Transactions on Industrial Informatics PP, no. 99: 1-1.
The ameliorations in high-precision phasor measurement units (μPMUs) and synchrophasor units have accommodated the distribution grid with peculiar visibility. Therefore, investigating the challenges of uncertainty consideration on precise fault detection in microgrids has become a new research milestone. This paper presents an effective data-driven stochastic method that justifies the adoption of only two μPMUs that are communicating under an IoT-based umbrella to detect and allocate irregularities in a microgrid. The proposed method has the ability to operate under a variety of case studies and scenarios including but not limited to the capacitor bank switching, distributed energy resources (DERs) diversity and high impedance fault occurrence, whilst considering the uncertainty in load, without installing individual sensors. Furthermore, a two-point estimate approach is utilized to model the uncertainties of the problem. Not only does the proposed stochastic framework benefit from the voltage magnitude measurement, but it also utilizes its angle in event allocation, which manifests better performance compared to ordinary voltage and current sensors. The simulation results on the proposed microgrid indicate the high accuracy and a sound success is obtained under a variety of case studies. The results show the high accuracy and applicable aspect of the proposed data-driven approach for fault allocation using a few μPMUs in the IoT context.
Abdollah Kavousi-Fard; Saeed Nikkhah; Motahareh Pourbehzadi; Morteza Dabbaghjamanesh; Amir Farughian. IoT-based data-driven fault allocation in microgrids using advanced µPMUs. Ad Hoc Networks 2021, 119, 102520 .
AMA StyleAbdollah Kavousi-Fard, Saeed Nikkhah, Motahareh Pourbehzadi, Morteza Dabbaghjamanesh, Amir Farughian. IoT-based data-driven fault allocation in microgrids using advanced µPMUs. Ad Hoc Networks. 2021; 119 ():102520.
Chicago/Turabian StyleAbdollah Kavousi-Fard; Saeed Nikkhah; Motahareh Pourbehzadi; Morteza Dabbaghjamanesh; Amir Farughian. 2021. "IoT-based data-driven fault allocation in microgrids using advanced µPMUs." Ad Hoc Networks 119, no. : 102520.
An intermittent or restriking earth fault is a special type of earth fault that is common mostly in compensated cable networks. A great deal of effort has gone into protection against this type of fault. However, locating this fault has not received much attention. Therefore, there is a need to have a reliable method for locating this fault to repair the damaged cable. In this paper, the principles of a new method developed for locating transient intermittent earth faults on distribution networks are presented. The proposed method employs negative and zero sequence currents, and no voltage measurement is required, which means the proposed method has the potential to reduce cost when implemented in practice. It is intended mainly for typical intermittent earth faults in cable distribution networks where the typical fault resistance is in the range of a few ohms. Real data obtained from practical field tests is used to explain the phenomenon. A series of disturbance recordings obtained from field tests validate the proposed method.
Amir Farughian; Lauri Kumpulainen; Kimmo Kauhaniemi; Petri Hovila. Intermittent Earth Fault Passage Indication in Compensated Distribution Networks. IEEE Access 2021, 9, 45356 -45366.
AMA StyleAmir Farughian, Lauri Kumpulainen, Kimmo Kauhaniemi, Petri Hovila. Intermittent Earth Fault Passage Indication in Compensated Distribution Networks. IEEE Access. 2021; 9 (99):45356-45366.
Chicago/Turabian StyleAmir Farughian; Lauri Kumpulainen; Kimmo Kauhaniemi; Petri Hovila. 2021. "Intermittent Earth Fault Passage Indication in Compensated Distribution Networks." IEEE Access 9, no. 99: 45356-45366.
In this paper, two new methods for locating single-phase to ground faults in isolated neutral distribution networks are proposed. The methods are based on the analysis of symmetrical sequence currents. They are solely based on currents, not requiring voltage measurement. The first method employs only the zero sequence current and the second one utilizes the negative sequence current in combination with the zero sequence current. It is revealed why using only zero sequence current with a simple threshold is insufficient and may lead to false results. Using the proposed methods, earth faults with high resistances can be located in isolated neutral distribution networks with overhead lines or cables.
Amir Farughian; Lauri Kumpulainen; Kimmo Kauhaniemi. Non-Directional Earth Fault Passage Indication in Isolated Neutral Distribution Networks. Energies 2020, 13, 4732 .
AMA StyleAmir Farughian, Lauri Kumpulainen, Kimmo Kauhaniemi. Non-Directional Earth Fault Passage Indication in Isolated Neutral Distribution Networks. Energies. 2020; 13 (18):4732.
Chicago/Turabian StyleAmir Farughian; Lauri Kumpulainen; Kimmo Kauhaniemi. 2020. "Non-Directional Earth Fault Passage Indication in Isolated Neutral Distribution Networks." Energies 13, no. 18: 4732.
In this paper, a new method for locating single-phase earth faults on non-effectively earthed medium voltage distribution networks is proposed. The method requires only current measurements and is based on the analysis of the negative sequence components of the currents measured at secondary substations along medium voltage (MV) distribution feeders. The theory behind the proposed method is discussed in depth. The proposed method is examined by simulations, which are carried out for different types of networks. The results validate the effectiveness of the method in locating single-phase earth faults. In addition, some aspects of practical implementation are discussed. A brief comparative analysis is conducted between the behaviors of negative and zero sequence currents along a faulty feeder. The results reveal a considerably higher stability level of the negative sequence current over that of the zero sequence current.
Amir Farughian; Lauri Kumpulainen; Kimmo Kauhaniemi. Earth Fault Location Using Negative Sequence Currents. Energies 2019, 12, 3759 .
AMA StyleAmir Farughian, Lauri Kumpulainen, Kimmo Kauhaniemi. Earth Fault Location Using Negative Sequence Currents. Energies. 2019; 12 (19):3759.
Chicago/Turabian StyleAmir Farughian; Lauri Kumpulainen; Kimmo Kauhaniemi. 2019. "Earth Fault Location Using Negative Sequence Currents." Energies 12, no. 19: 3759.
Fault location in power networks is important as accurate information about the faulted line section expedites system restoration following a fault occurrence. A number of fault location methods have been proposed. Methods based on injecting a signal into the network and tracking it along the feeder appear to have received limited attention. In this study, fault location methods based on network signalling are examined. Two different types of approaches are presented. The first one is based on injection on a very low-frequency band, whereas the second one is based on utilising modern modulation technologies on low-frequency band, under 500 kHz, implemented on software-defined radios. The simulation results indicate the capability of the proposed methods in determining the location of a single phase-to-earth fault in medium-voltage distribution networks.
Amir Farughian; Anton Poluektov; Antti Pinomaa; Jero Ahola; Antti Kosonen; Lauri Kumpulainen; Kimmo Kauhaniemi. Power line signalling based earth fault location. The Journal of Engineering 2018, 2018, 1155 -1159.
AMA StyleAmir Farughian, Anton Poluektov, Antti Pinomaa, Jero Ahola, Antti Kosonen, Lauri Kumpulainen, Kimmo Kauhaniemi. Power line signalling based earth fault location. The Journal of Engineering. 2018; 2018 (15):1155-1159.
Chicago/Turabian StyleAmir Farughian; Anton Poluektov; Antti Pinomaa; Jero Ahola; Antti Kosonen; Lauri Kumpulainen; Kimmo Kauhaniemi. 2018. "Power line signalling based earth fault location." The Journal of Engineering 2018, no. 15: 1155-1159.