Results 111 to 120 of about 43,414 (164)

Effect of Distributed Generator on Over Current Relay Behaviour

2020
Integration of Distributed Generator (DG) to the distribution network feeder causes its power flow to bidirectional in place of unidirectional influencing the feeder protection. The analysis of chapter presents the influence of Distributed Generator on the over current relay behaviour.
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Application of the Firefly algorithm to optimal over-current relay coordination

2014 International Conference on Optimization of Electrical and Electronic Equipment (OPTIM), 2014
Optimization of over current relay settings is a major problem in protection of electrical power systems. This paper describes the Firefly algorithm for optimal time coordination of these relays. The algorithm has been implemented in MATLAB and tested on a radial system, as well as a single end fed system with a parallel feeder. The results obtained by
S. S. Gokhale, V. S. Kale
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Improving the performance of smart grid over-current protection relays

2011 IEEE PES Innovative Smart Grid Technologies, 2011
Due to the significant increase in non linear loads and the worldwide trend to establish smart grids, harmonic level in the electricity grids is significantly increased. In addition to their impact on power quality, harmonic currents can have a devastating effect on power system protection performance especially on the operation of over current relays ...
Ahmed Abu-Siada, H. Tin, M. A. S. Masoum, Y. Qian   +3 more
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Microcontrollor Based Over Current Relay for Protection System

2018
Microcontrollor Based Over Current Relay for Protection ...
Srinivasan, R., Anisha, Dr. K.
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Optimal coordination of over-current relay with Distributed Generation consideration

2011 International Conference on Advanced Power System Automation and Protection, 2011
Utilizing Distributed Generation (DG) is greatly increasing in recent years. This is mostly because of simple installation, environmental effects and loss reduction due to closeness to the load centers. However, DG installation, especially in distribution networks, raises some problems. One of these problems is over-current (OC) relays coordination. In
Mehdi Maleknia, null Hossein Kazemi Karegar   +1 more
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Optimal Coordination of Dual Setting Directional Over Current Relays in Microgrid With Different Standard Relay Characteristics

2020 IEEE 9th Power India International Conference (PIICON), 2020
In the presence of distributed generation (DG), the fault current through the relay in forward direction is higher as compared to reverse direction. Thus it is desirable to have dual setting directional over current relay (DOCR) which can operate for both forward and reverse direction of fault current with two independent relay settings.
Raghvendra Tiwari, Ravindra Kumar Singh, Niraj Kumar Choudhary   +2 more
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Optimal coordination of distance and over-current relays using ICA

2014 19th Conference on Electrical Power Distribution Networks (EPDC), 2014
Coordination of different relays in transmission systems is an important issue in relays application. In this paper, the over-current and distance relays are coordinated through the Imperialist Competitive Algorithm (ICA) considering time setting multiplier (TSM) and pickup current of the relays.
M. Rahmatian, M. H. Pourarab, M. Gholami, G. B. Gharehpetian   +3 more
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Development of line current differential relay over native ethernet

12th IET International Conference on Developments in Power System Protection (DPSP 2014), 2014
Packet/frame-based communication services have been in general use for utility communications for a number of years with the exception of communications for protection and in particular line current differential protection. Recently, a number of utilities have begun to investigate the possibility of applying packet/frame-based communication supported ...
S. Fukushima, H. Okamura, J. Yamada, F. Kawano, S. Kohiga, H. Yamakawa, T. Mori   +6 more
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Optimal coordination of over-current relays using differential evolution

2012 9th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, 2012
In this paper, the study of optimal coordination of directional over-current relays is proposed. The relay coordination problem is non-linear. It typically consists of two groups of control variables (Time Dial Setting: TDS and Plug Setting: PS). The objective function used is the operation time of the main relay in all considered fault cases.
Somboonsup Rodporn, Thanatchai Kulworawanichpong, Anant Oonsivilai, Dusit Uthitsunthorn, Ratchadaporn Oonsivilai   +4 more
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RANCANG SIMULASI SISTEM OVER CURRENT RELAY PADA JARINGAN DISTRIBUSI 20KV: SIMULASI SISTEM OVER CURRENT RELAY PADA JARINGAN DISTRIBUSI 20KV

2021
Pendistribusian tenaga listrik membutuhkan keandalan dalam menjaga peralatan penyaluran dari gangguan diantaranya gangguan hubung singkat. Untuk meminimalisir gangguan tersebut diperlukan sistem proteksi yang memenuhi persyaratan sensitifitas, keandalan, selektifitas dan kecepatan, yang semuanya tergantung pada ketepatan dalam setting peralatan ...
Paminto, Hany Dwi, Kiswantono, Agus
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