考虑过电压限制下的光伏渗透率安全限值研究  

Research on Safety Limits of Photovoltaic Permeability Considering Overvoltage Limitation

作　　者：汪光辉 赵平 杨磊[1,2] 严小毛 李振兴[1,2] WANG Guanghui;ZHAO Ping;YANG Lei;YAN Xiaomao;LI Zhenxing(College of Electrical Engineering&New Energy,China Three Gorges University,Yichang 443002,China;Yichang Key Laboratory of Intelligent Operation and Security Defense of Power System,China Three Gorges University,Yichang 443002,China;Yichang QingYang Technology Co.,Ltd.,Yichang 443005,China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002 [2]三峡大学.电力系统智能运行与安全防御宜昌市重点实验室,湖北宜昌443002 [3]宜昌清阳科技有限公司,湖北宜昌443002

出　　处：《电工材料》2024年第2期44-47,53,共5页Electrical Engineering Materials

基　　金：国家自然科学基金项目(52077120)--大规模电力外送通道重合闸所致重大风险分析与规避控制策略研究。

摘　　要：在含分布式光伏电源的馈线数学模型基础上,分析并导出了馈线光伏渗透率的安全限值计算模型。针对整区光伏规划容量接入的实际配电线路的馈线特征,在线路电压偏差可达标准上限的前提下计算各回馈线的光伏渗透率及安全限值,来确定规划光伏接入后有电压越限风险的馈线。最后,以实际屋顶光伏试点工程展开案例分析,结果表明:所提方法能够快速对试点区域内配电网的光伏规划容量进行评估,为整区光伏的建设有序发展提供参考。In this paper,based on the mathematical model of feeder with distributed photovoltaic power supply,the calculation model of safety limit of feeder photovoltaic permeability was analyzed and derived.According to the feeder characteristics of the actual distribution lines with planned photovoltaic capacity access in the whole area,the PV permeability and safety limits of each feeder were calculated under the premise that the deviation of the line voltage can reach the upper limit of the standard to determine the feeder with the risk of overvoltage after planned photovoltaic access.Finally,a case study was carried out on a real roof photovoltaic pilot project.The results show that the proposed method can quickly assess the planned capacity of the distribution network in the pilot area and provide a reference for the orderly development and construction of photovoltaic in the whole area.

关 键 词：整区光伏 光伏渗透率 配电网 过电压 

分 类 号：TM715[电气工程—电力系统及自动化]