某光伏电站外送电压偏高原因分析及改进建议

Cause Analysis and Improvement Suggestions of High Output Voltage of a Photovoltaic Power Station

某并网光伏电站在试运行阶段,发现箱变高压侧电压升高,导致逆变器超压报警停机、箱变超压报警等异常现象。文章通过理论计算和现场实验,对其原因进行分析,并提出了改进建议和预防措施。

During the trial operation of a grid-connected photovoltaic power station,it was found that the voltage on the high-voltage side of the box-type transformer increased,which resulted in the abnormal phenomena of overvoltage alarm and shutdown of the inverters and overvoltage alarm of the box-type transformer.Through theoretical calculations and field experiments,this paper analyzes the causes and proposes improvement suggestions and preventive measures.