Positive Sequence Relaying Method for Solar Photovoltaic Integrated Distribution System

被引：11
|
作者：
Mishra, Priyanka [1 ]
Pradhan, Ashok Kumar [2 ]
Bajpai, Prabodh [2 ]
机构：
[1] Indian Inst Technol Kharagpur, Energy Sci & Engn, Kharagpur 721302, W Bengal, India
[2] Indian Inst Technol Kharagpur, Elect Engn, Kharagpur 721302, W Bengal, India
来源：
IEEE TRANSACTIONS ON POWER DELIVERY | 2021年 / 36卷 / 06期
关键词：
Reactive power; Relays; Voltage control; Fault currents; Optical character recognition software; Inverters; Fault detection; Distribution system; solar photovoltaic plant; overcurrent relay; voltage-restrained overcurrent relay; positive sequence component; OVERCURRENT PROTECTION; COORDINATION;
D O I：
10.1109/TPWRD.2020.3044330
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
For fault ride-through requirement, solar photovoltaic (PV) plant remains connected to the grid during a fault. In such a situation, a PV plant operates in different modes and supplies current to comply with the requirements of the grid. The relative magnitude of phase current contributed by a PV plant during a fault is at par with the nominal current. Such a fault behavior restricts the application of available phase current based relaying approaches while protecting the distribution system with a PV plant. A protection method using local positive sequence voltage and current is proposed to protect a distribution system with PV plant. The method selects pickup current using proposed current-voltage curve for fault detection. A three-dimensional time-current-voltage characteristic is proposed for trip time calculation. Performance of the proposed method is tested for relays on both PV plant side and grid end using DigSilent PowerFactory simulation data for a CIGRE 14-bus distribution system with PV plant having different modes of operations. The method is found to be accurate and comparative assessment reveals its superiority.
引用
收藏
页码：3519 / 3528
页数：10
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