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含分布式光伏的有源配电网电压控制系统设计

来源:电工电气发布时间:2025-06-27 13:27浏览次数:5

含分布式光伏的有源配电网电压控制系统设计

黄素娟1,贺丽平1,吴爽2,冯秋侠2
(1 南京科技职业学院 电气与控制工程学院,江苏 南京 210048;
2 南瑞集团有限公司,江苏 南京 211106)
 
    摘 要:大量分布式光伏的接入,使配电网电压问题更加凸显的同时也为配电网提供了可控资源。为充分挖掘有源配电网的调节潜力,实现全过程电压控制,提出一种包含接入前电压评估、日前网络重构、日内电压调节的多时间尺度有源配电网电压控制系统。光伏接入前的电压估算为合理规划分布式光伏接入提供依据,光伏接入后,日前基于净负荷进行网络重构,日内基于灵敏度进行电压调节,从而实现电压越限控制。提出的电压估算方法及灵敏度计算方法充分考虑工程实际情况,计算简单、计算量小,通过某 10 kV 配电网的算例分析,表明该方法准确度较高,能够满足工程应用。
    关键词: 有源配电网;分布式光伏;电压控制;多时间尺度;网络重构;越限控制;灵敏度
    中图分类号:TM615 ;TM714.2     文献标识码:A     文章编号:1007-3175(2025)06-0024-05
 
Design of Voltage Control System for Active Distribution
Network with Distributed Photovoltaic
 
HUANG Su-juan1, HE Li-ping1, WU Shuang2, FENG Qiu-xia2
(1 School of Electrical and Control Engineering, Nanjing Polytechnic Institute, Nanjing 210048, China;
2 Nari Group Corporation, Nanjing 211106, China)
 
    Abstract: The access of a large number of distributed photovoltaics, which not only highlights the voltage problem in the distribution network, but also provides controllable resources for the distribution network. In order to fully exploit the regulation potential of active distribution network and achieve full-process voltage control. A multi-time-scale active distribution network voltage control system is proposed,which includes pre-access voltage assessment, day-ahead network reconfiguration and intra-day voltage regulation. The voltage estimation before photovoltaic access provides a basis for reasonable planning of distributed photovoltaic access. After photovoltaic access, the network is reconfigured based on net load on the current day, and voltage regulation is carried out based on sensitivity on the current day, thereby achieving voltage over-limit control. The proposed voltage estimation method and sensitivity calculation method fully consider the actual engineering situation, the calculation is simple and the amount of calculation is small. The analysis based on a 10 kV distribution network in a certain area shows that the proposed method has high accuracy and can meet engineering applications.
    Key words: active distribution network; distributed photovoltaic; voltage control; multi-time-scale; network reconfiguration; over-limit control; sensitivity
 
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