分布式光伏对线路自动重合闸的影响分析

为研究分布式光伏对线路自动重合闸的影响,从重合闸动作过程中分布式光伏锁相环的动态特性出发,分析了逆变器在重合闸动作过程中的暂态过程以及分布式光伏输出特性。然后根据光伏容量与本地负荷的不同匹配程度以及不同故障位置,分别讨论了光伏接入对于重合闸的影响。最后给出了考虑分布式光伏接入的重合闸配置方式。建议在重合闸时间整定上考虑孤岛保护动作及断路器完全断开的时间。

Analysis of the influence of distributed photovoltaic on automatic reclosing

In order to study the influence of distributed photovoltaic on the automatic reclosing of the line, this paper analyzes the transient process and distributed photovoltaic output characteristics of the inverter during the reclosing action from the dynamic characteristics of the distributed PV phase-locked loop during the reclosing operation. Then according to the different matching degree of PV capacity and local load and different fault locations, the effects of PV access on reclosing are discussed respectively. Finally, the reclosing configuration method considering distributed PV access is given. The island protection action and the time when the circuit breaker is completely disconnected are considered in the reclosing time setting. This work is supported by National Science and Technology Support Program of China (No. 2015BAA09B01).