含分布式光伏的有源配电网无功电压控制策略研究  

Research on Reactive Voltage Control Strategy of Active Distribution Network Containing Distributed PV

作　　者：陈志华 柯强 胡经伟 李建坤 万姗 CHEN Zhihua;KE Qiang;HU Jingwei;LI Jiankun;WAN Shan(Institute of Economics and Technology,State Grid Huanggang Power Supply Company,Hubei Huanggang 438000,China)

机构地区：[1]国网黄冈供电公司经济技术研究所,湖北黄冈438000

出　　处：《电力电容器与无功补偿》2022年第2期16-24,共9页Power Capacitor & Reactive Power Compensation

基　　金：湖北省自然科学基金项目重大专项(2017ZD02)。

摘　　要：分布式光伏的日益普及和负荷的波动加剧了配电网电压和无功功率扰动的风险。鉴于此,本文提出了一种基于九区图和光伏逆变器的无功电压控制策略。首先,构建了一种时间序列控制结构,减少了传统设备的动作次数,消除电压冲突。其次,构建非侵入式无功电压控制模型,利用多个设备的灵敏度值,计算光伏的无功功率输出并跟踪光伏逆变器控制范围内的参考电压。最后,通过IEEE 33节点测试系统验证所提出的无功电压控制策略的有效性。实验结果表明:本文提出的控制策略能够实现无功功率快速、准确的调节,并能改善电压质量,缓解有载调压变压器和电容器组的运行压力;与传统控制策略相比,基于九区图和光伏逆变器的无功电压控制策略能够有效提高调节精度,减少传统设备的运行负担。The increasing popularity of distributed photovoltaic and load fluctuations have exacerbated the risk of voltage and reactive power disturbances in the distribution network.In view of this,a kind of reactive voltage control strategy based on nine⁃zone diagram and photovoltaic inverter is proposed in this paper.First,a kind of time series control structure is constructed to reduce the operation number of traditional equipment and eliminate voltage conflicts.Then,the non⁃intrusive reactive voltage control model is constructed,sensitivity values of multiple devices is used to calculate the reactive power output of the photovoltaic and track the reference voltage within the control range of the photovoltaic inverter.Finally,the effectiveness of the non⁃intrusive reactive voltage control strategy is verified by the IEEE 33 node test system.The experimental results show that the control strategy proposed in this paper can achieve fast and accurate adjustment of reactive power,improve voltage quality,and relieve the operating pressure of on⁃load tap⁃changing transformers and capacitor banks.Compared with the traditional control strategy,the reactive voltage control strategy based on the nine⁃zone diagram and the photovoltaic inverter can effectively improve the adjustment accuracy and reduce the operating burden of the traditional equipment.

关 键 词：配电网 无功电压控制 九区图 光伏逆变器 无功功率 

分 类 号：TM615[电气工程—电力系统及自动化] TM714.2