考虑新能源接入的配电网继电保护研究

Research on Relay Protection of Distribution Network Considering New Energy Access

新能源电源规模化分散接入配电网后,给传统继电保护造成了许多新的问题和挑战。为此,对新能源电源接入对传统配电网保护的影响进行分析,探究不同新能源接入条件下对继电保护的影响,提出了适用于新能源电源规模化接入的配电网继电保护方式,通过算例验证对所提的保护方案进行校验,结果表明所提策略能够满足含新能源电源接入后的配电网继电保护需求,保证配电网安全稳定地运行。

The large-scale and decentralized access of new energy sources to the distribution network has brought many new problems and challenges to the traditional relay protection. Therefore, the impact of new energy power access on traditional distribution network protection is analyzed, the impact of different new energy access conditions on relay protection is explored, and the relay protection mode suitable for large-scale access of new energy power is put forward. The results show that the proposed strategy can meet the relay protection requirements of the distribution network after the new energy source is connected, and ensure the safe and stable operation of the distribution network.