光伏电站无功调节能力仿真及快速无功调节分析  

Simulation of Reactive Power Regulation Ability of Photovoltaic Power Station and Analysis of Rapid Reactive Power Regulation

作　　者：韩如磊 钟鸣[1,2] 魏冰凌 高鑫哲 HAN Rulei;ZHONG Ming;WEI Bingling;GAO Xinzhe(Inner Mongolia Power Research Institute,Hohhot 010020,China;Inner Mongolia Enterprise Key Laboratory of Smart Grid Simulation of Electrical Power System,Hohhot 010020,China)

机构地区：[1]内蒙古电力科学研究院,呼和浩特010020 [2]内蒙古自治区电力系统智能化电网仿真企业重点实验室,呼和浩特010020

出　　处：《内蒙古电力技术》2020年第4期20-26,共7页Inner Mongolia Electric Power

基　　金：内蒙古电力(集团)有限责任公司科技项目“大型可再生能源发电基地群系统保护与安稳策略研究及推广应用”(2018-72)。

摘　　要：针对光伏电站中自动电压控制系统对光伏逆变器无功功率的调节速度较慢,实际运行时光伏逆变器的无功调节范围往往小于国标要求的问题,对单级式非隔离电压源型光伏逆变装置与静止无功发生装置进行比较分析,通过仿真证明光伏逆变器具有30 ms以内的动态无功响应时间和高于国标要求的无功容量。在考虑站内无功损耗的基础上,对整站逆变器群的无功调节能力进行仿真研究。最后对某光伏电站进行快速功率调节能力改造,在现场测试中取得了良好的效果。In actual operation,the reactive power regulation range of photovoltaic(PV)inverters in PV plants is usually smaller than the requirements of national standard,and the automatic voltage control(AVC)system in PV plants adjusts the reactive power of PV inverters slowly.In this paper,a single-stage non-isolated voltage source(VSC)PV inverter is compared with a static var generator(SVG).The simulation result shows that the PV inverter has a dynamic reactive power response time within 30 ms and a reactive power capacity higher than the requirement of the national standard.In consideration of the reactive power loss in the plant,the simulation research on the reactive power regulation capability of the inverter group of the PV plant is carried out.Finally,a transformation for rapid power regulation capability of a PV power plant is carried out,and ideal results have been obtained in the field test.

关 键 词：光伏电站 自动电压控制系统 快速无功调节 光伏逆变器 静止无功发生装置 

分 类 号：TM615.2[电气工程—电力系统及自动化]