TY - CHAP AU - Aly, Mokhtar AU - Mohamed, Emad A. AU - Ramadan, Husam A. AU - Elmelegi, Ahmed AU - Mohamed, Sayed Mohamed Said AU - Ahmed, Emad M. AU - Shawky, Ahmed AU - Rodriguez, Jose TI - Optimized LFC Design for Future Low-Inertia Power Electronics Based Modern Power Grids T2 - 2023 IEEE Conference on Power Electronics and Renewable Energy (CPERE) PB - IEEE SN - 9781665452335 PY - 2023 PG - 6 DO - 10.1109/CPERE56564.2023.10119568 UR - https://m2.mtmt.hu/api/publication/34370130 ID - 34370130 AB - Numerous renewable energy source (RES) plants have lately been added to modern power grids. Power electronics converter systems (PECS) have become key components in the structures of these RESs for grid integration. However, PECS-based RESs result in decreased power system inertia, which reduces as penetration increases. Load frequency controllers (LFCs) have enhanced the performance of current power grids based on PECS. As a result, this study provides an optimal LFC structure based on merging characteristics from standard Tilt-Integral-Derivative (TID) and fractional order-based proportional-integral-derivative (FOPID) controllers in a novel combined FOTID LFC technique. The recently announced slime mould algorithm (SMA) was used to optimize the parameters of the proposed LFC. The results of a two-area RES-based power grid simulation are utilized to validate the proposed TFOID controller and the SMA-based design optimization. LA - English DB - MTMT ER - TY - JOUR AU - Mohamed, Emad A. AU - Aly, Mokhtar AU - Elmelegi, Ahmed AU - Ahmed, Emad M. AU - Watanabe, Masayuki AU - Mohamed, Sayed Mohamed Said TI - Enhancement the Frequency Stability and Protection of Interconnected Microgrid Systems Using Advanced Hybrid Fractional Order Controller JF - IEEE ACCESS J2 - IEEE ACCESS VL - 10 PY - 2022 SP - 111936 EP - 111961 PG - 26 SN - 2169-3536 DO - 10.1109/ACCESS.2022.3216212 UR - https://m2.mtmt.hu/api/publication/33426734 ID - 33426734 AB - Substituting conventional energy sources with new renewable sources is crucial issue nowadays in energy generation systems to face climate changes and increased load demands. Due to the increased penetration levels of renewable sources in power systems, the benefits of the high-inertia of conventional sources are being insufficient. The resulting low-inertia power systems introduce several stability, reliability, and coordination problems for power system operation and control. Therefore, this paper tackles the coordination assessment and enhancement between digital frequency relays using a new fractional order load frequency controller equipped with superconducting magnetic energy storage (SMES) virtual inertia system. The improved coordination method is established using optimized fractional order controller based on slime mould optimization algorithm (SMA). The proposed SMA-based design method benefits the adaptive weights of SMA algorithm. The proposed design is generalized to be applied on single area and multi-area interconnected power systems as well. Compared to existing literature, this paper presents an advanced fractional order controller with coordinated operation with existing protection relays. The obtained results show the coordination shortcomings of renewable energy based microgrids with traditional control systems. However, improved design and coordination are obtained using the proposed SMA-optimized fractional order controllers. The superiority and feasibility of the proposed analysis and methods are verified on different case studies using single and multiple interconnected areas. LA - English DB - MTMT ER - TY - THES AU - Mohamed, Sayed Mohamed Said TI - Improving power system reliability and stability by cooperation of distributed generation and energy storage system PB - Budapesti Műszaki és Gazdaságtudományi Egyetem PY - 2021 SP - 141 UR - https://m2.mtmt.hu/api/publication/32517150 ID - 32517150 LA - English DB - MTMT ER - TY - JOUR AU - Mohamed, Sayed Mohamed Said AU - Aly, Mokhtar AU - Hartmann, Bálint AU - Mohamed, Emad A TI - Coordinated fuzzy logic-based virtual inertia controller and frequency relay scheme for reliable operation of low-inertia power system JF - IET RENEWABLE POWER GENERATION J2 - IET RENEW POWER GEN VL - 15 PY - 2021 IS - 6 SP - 1286 EP - 1300 PG - 15 SN - 1752-1416 DO - 10.1049/rpg2.12106 UR - https://m2.mtmt.hu/api/publication/31903344 ID - 31903344 N1 - Department of Electrical Engineering, Faculty of Engineering, Aswan University, Aswan, Egypt Department of Electric Power Engineering, Budapest University of Technology and Economics, Budapest, Hungary Electronics Engineering Department, Universidad Tecnica Federico Santa Maria, Valparaiso, Chile Cited By :1 Export Date: 15 December 2021 Correspondence Address: Said, S.M.; Department of Electrical Engineering, Egypt; email: sayed.said@aswu.edu.eg Correspondence Address: Said, S.M.; Department of Electric Power Engineering, Hungary; email: sayed.said@aswu.edu.eg AB - Coordination between protection and control devices is crucial for maintaining continuous operation of power systems. Existing strategies suffer from improper coordination of control and protection devices. Moreover, high penetration levels of renewable energy sources result in lowering the overall power system inertia. Therefore, this paper presents a robust fuzzy-logic control (FLC) method for superconducting magnetic energy storage (SMES) in low inertia power systems. The new proposed FLC enables robust and wide operating range for SMES compared to the widely employed controllers. The proposed FLC method and load frequency control are coordinated to emulate virtual inertia. In addition, a cooperate coordination between frequency relay and proposed controller is preserved to maintain reliable operation of low inertia power systems. To prove the effectiveness of proposed coordination strategy, it has been tested with considering different load and renewable energy sources (RESs) disturbances with varying inertia level of the selected case study. The results demonstrate that the proposed FLC method can achieve robust SMES operation as virtual inertia controller (VIC) at wide operating range. Moreover, cooperative operation of VIC and frequency protection is preserved using the proposed coordination strategy. The power system availability, frequency regulation, and dynamic stability are improved using the proposed method. LA - English DB - MTMT ER - TY - JOUR AU - Mohamed, Sayed Mohamed Said AU - Aly, Mokhtar AU - Hartmann, Bálint TI - An Efficient Reactive Power Dispatch Method for Hybrid Photovoltaic and Superconducting Magnetic Energy Storage Inverters in Utility Grids JF - IEEE ACCESS J2 - IEEE ACCESS VL - 8 PY - 2020 SP - 183708 EP - 183721 PG - 14 SN - 2169-3536 DO - 10.1109/ACCESS.2020.3029326 UR - https://m2.mtmt.hu/api/publication/31638861 ID - 31638861 N1 - Cited By :10 Export Date: 15 December 2021 Correspondence Address: SAID, S.M.; Department of Electric Power Engineering, Hungary; email: sayed.said@vet.bme.hu LA - English DB - MTMT ER - TY - JOUR AU - Mohamed, Sayed Mohamed Said AU - Ali, Abdelfatah AU - Hartmann, Bálint TI - Tie-line Power Flow Control Method for Grid-connected Microgrids with SMES Based on Optimization and Fuzzy Logic JF - JOURNAL OF MODERN POWER SYSTEMS AND CLEAN ENERGY J2 - J MODERN POWER SYSTEMS CLEAN ENERGY VL - 8 PY - 2020 IS - 5 SP - 941 EP - 950 PG - 10 SN - 2196-5625 DO - 10.35833/MPCE.2019.000282 UR - https://m2.mtmt.hu/api/publication/31611328 ID - 31611328 N1 - Cited By :7 Export Date: 22 October 2021 Correspondence Address: Said, S.M.; Department of Electrical Engineering, Egypt; email: sayed.said@aswu.edu.eg LA - English DB - MTMT ER - TY - CHAP AU - Mohamed, Sayed Mohamed Said AU - Aly, Mohamed M. AU - Abdel-Akher, Mamdouh AU - Hartmann, Bálint TI - Voltage Control of Large-Scale Distribution Systems during Wind Speed Transients Using SMES T2 - 2020 International Conference on Innovative Trends in Communication and Computer Engineering (ITCE) SN - 9781728148014 PY - 2020 SP - 391 EP - 396 PG - 6 DO - 10.1109/ITCE48509.2020.9047794 UR - https://m2.mtmt.hu/api/publication/31274610 ID - 31274610 N1 - Budapest University of Technology and Economics, Department of Electric Power Engineering, Budapest, 1111, Hungary Aswan University, Department of Electrical Engineering, Aswan, 81542, Egypt College of Engineering, Unizah Qassim University, Electrical Engineering Department, Saudi Arabia Export Date: 15 December 2021 AB - This paper discusses the application of superconducting magnetic energy storage (SMES) for voltage control of large-scale distribution systems during wind speed transients. The wind turbine adopted in this paper is the squirrel cage induction generator (SCIG) with a parallel connected capacitor bank for reactive power support and the adopted distribution system is the 90-bus radial distribution system. This type of wind turbine is the worst type from the point of view of voltage control and is selected to prove the effectiveness of the proposed control strategy of SMES active and reactive powers on the voltage profile of all buses of the distribution system. Moreover, one of the worst scenarios of wind transient is studied in this paper. Wind energy generation system (WEGS) and SMES are connected at the same bus for better improvement of voltage profile. SMES coil is immersed in a cooling liquid to keep it in the superconducting state, the voltage across the coil is stepped down by transformer and the flow of SMES power is controlled by fuzzy logic controller (FLC). FLC is designed so that SMES can charge/discharge real power depending on the wind speed. Moreover, value of reactive power delivered from the SMES to the distribution system is controlled according to the magnitude of bus voltage. FLC is designed with two inputs; deviation in wind speed and variations in SMES current. The obtained results validated the adopted control technique to improve the voltage profile of all buses of the studied system. LA - English DB - MTMT ER - TY - CHAP AU - Mohamed, Sayed Mohamed Said AU - Mohamed, Emad A. AU - Hartmann, Bálint TI - Enhancement of Microgrid Stability Using a Novel Scheme of Load Shedding Based-DFR Coordinated with SMES T2 - 2020 International Conference on Innovative Trends in Communication and Computer Engineering (ITCE) SN - 9781728148014 PY - 2020 SP - 359 EP - 364 PG - 6 DO - 10.1109/ITCE48509.2020.9047759 UR - https://m2.mtmt.hu/api/publication/31274597 ID - 31274597 N1 - Electrical Engineering Department, Aswan University, Aswan, 81542, Egypt Department of Electric Power Engineering, Budapest University of Technology and Economics, Budapest, 1111, Hungary Cited By :2 Export Date: 15 December 2021 LA - English DB - MTMT ER - TY - JOUR AU - Salama, Hossam Salah Hussein AU - Mohamed, Sayed Mohamed Said AU - Vokony, István AU - Hartmann, Bálint TI - Power System Improvement of Different Coordinated Electric Vehicles Integration Approaches with Superconducting Magnetic Energy Storage JF - INTERNATIONAL REVIEW OF ELECTRICAL ENGINEERING J2 - INT REV ELECTR ENG VL - 14 PY - 2019 IS - 6 SP - 407 SN - 1827-6660 DO - 10.15866/iree.v14i6.17315 UR - https://m2.mtmt.hu/api/publication/31189630 ID - 31189630 LA - English DB - MTMT ER - TY - CHAP AU - Mohamed, Sayed Mohamed Said AU - Aly, Mokhtar AU - Mohamed, Emad A. AU - Hartmann, Bálint ED - Kouzou, Abdellah ED - Ayman, Samy ED - Omar, Abdelrahim TI - Analysis and Comparison of SMES Device Power Losses Considering Various Load Conditions T2 - 2019 IEEE Conference on Power Electronics and Renewable Energy (CPERE) PB - IEEE CY - Danvers (MA) SN - 9781728109107 PY - 2019 SP - 1 EP - 5 PG - 5 DO - 10.1109/CPERE45374.2019.8980205 UR - https://m2.mtmt.hu/api/publication/31178139 ID - 31178139 LA - English DB - MTMT ER -