湖南电力 ›› 2022, Vol. 42 ›› Issue (6): 99-103.doi: 10.3969/j.issn.1008-0198.2022.06.017

• 经验与探讨 • 上一篇    下一篇

新能源故障穿越特性对暂态电压的影响

刘辉, 谢伟, 郭绯阳   

  1. 河南九域恩湃电力技术有限公司,河南 郑州 450000
  • 收稿日期:2022-07-29 修回日期:2022-08-20 出版日期:2022-12-25 发布日期:2023-01-13
  • 作者简介:刘辉(1990),河南许昌人,工程师,硕士研究生,通信作者,从事新能源控制技术及网源协调技术研究工作。

Influence of Fault Crossing Characteristics of New Energy on Transient Voltage

LIU Hui, XIE Wei, GUO Feiyang   

  1. Henan Jiuyu Enpai Power Technologies Group Co., Ltd., Zhengzhou 450000, China
  • Received:2022-07-29 Revised:2022-08-20 Online:2022-12-25 Published:2023-01-13

摘要: 新能源电力电子接口所固有的弱支撑性和低抗扰性,使得电力系统的运行特性发生了改变,目前常规光伏电站的故障穿越特性尚未有明确标准要求,其动态无功电流的实际变化特性对电网的影响缺乏研究。基于某光伏电站故障穿越试验实测数据,在PSASP下建立可有效反映实际故障穿越行为的仿真模型,研究该光伏电站在故障情况下的动态无功电流变化特性对电网暂态电压产生的影响。结果表明,故障穿越恢复期间动态无功电流反调量过大的变化特性会造成故障恢复后出现暂态过电压。

关键词: 故障穿越, 无功电流, 暂态电压, 光伏

Abstract: The weak support and low immunity of the new energy power electronic interface have changed the operating characteristics of the power system, now the fault-through characteristics of conventional photovoltaic power plants have not yet been clearly required by standards, and the actual change characteristics of the dynamic reactive current have little research on the impact of the power grid. Based on the measured data of the fault ride-through test of a photovoltaic power station, a simulation model that can effectively reflect the actual fault-through behavior is established under PSASP, and the influence of the dynamic reactive current change characteristics of the photovoltaic power station under fault conditions on the transient voltage of the power grid is studied.The results show that excessive dynamic reacitve current backregulation cluring fault crossing recovery can cause transient overvoltage after fault recovery.

Key words: fault, reactive power current, transient voltage, photovoltaic

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