某光伏场站谐波过电压故障分析与解决方案

Analysis and Solution of Harmonic Overvoltage Fault in a Photovoltaic Station

某光伏场站连续两日突发2次SVG快速过电压跳闸事故,严重影响光伏场站的并网运行稳定性。为了确保场站内电气设备的安全稳定运行,对现场开展谐波过电压研究及电能质量测试分析,研究事件产生原因及处置措施。通过仿真计算、实测数据验证,为新能源电站串并联谐振导致的谐波过电压以及谐波电流放大治理提供科学的数据支撑。

A certain photovoltaic plant experienced two sudden SVG rapid overvoltage tripping accidents in two consecutive days,seriously affecting the stability of grid-connection operation.In order to ensure the safe and stable operation of electrical equipment in the station,harmonic overvoltage investigation and power quality testing analysis were carried out on site to seek the causes of the event and its handling measures.Through simulation calculations and actual measurement data verification,scientific data support was provided for management of harmonic overvoltage and harmonic current amplification caused by series parallel resonance in new energy generations.