融合实测数据的配网断路器投切暂态过电压建模方法  

Switching Transient Overvoltage Modeling Method for Circuit Breaker in Distribution Networks Based on Measured Data

作　　者：袁涛[1] 唐瑭 司马文霞[1] 唐维 杨鸣[1] 谢荣斌 YUAN Tao;TANG Tang;SIMA Wenxia;TANG Wei;YANG Ming;XIE Rongbin(State Key Laboratory of Power Transmission Equipment&System Security and New Technology,Chongqing University,Chongqing 400044,China;State Grid Suining Electric Power Supply Company,Suining 629000,China;Guiyang Power Supply Company,Guizhou Electric Power Supply Company,Guiyang 550000,China)

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044 [2]国网遂宁供电公司,遂宁629000 [3]贵州电网有限责任公司贵阳供电公司,贵阳550000

出　　处：《高电压技术》2021年第5期1555-1563,共9页High Voltage Engineering

基　　金：国家自然科学基金(51837002,51777020)。

摘　　要：数字孪生技术的发展使配网中设备在线监测数据的获取愈加方便,利用实测数据对设备的运行情况进行安全性分析是数字孪生技术的一个重要应用。该文提出一种融合实测数据的配网断路器投切暂态过电压的建模方法,该方法通过采集10 kV配网断路器的实际运行数据,提取断路器的关键运行参数,可以对数值模型进行迭代修正,从而实现仿真模型对设备当前运行状态的跟随,提高分析结果的可靠性。仿真结果表明:所提模型计算得到的投切过电压水平标幺值最大为3.88,相较传统模型与实测值更为相近。该模型可用于配网真空断路器的运行安全分析。With the development of digital twin technology, it is more convenient for equipment in power grid to acquire monitoring data online. Therefore, using measured data to analyze the safety of equipment operation will become an important application of digital twin technology. This paper proposes a switching transient overvoltage modeling method for circuit breakers in distribution networks based on measured data. Through collecting the actual operation data of the 10 k V distribution network circuit breaker, the key operation parameters of the circuit breaker are extracted and the model parameters are iterated and modified accordingly. Moreover, the simulation model can reflect the status of the current operating equipment and improve the reliability of the analysis results. The simulation results show that the maximum distribution overvoltage calculated by this model is 3.88, and it is closer to the measured value compared with the traditional model. This model can be used to analyze the operation safety of distribution network circuit breaker.

关 键 词：真空断路器 实测数据 数字孪生 截流值 投切过电压 统计分析 

分 类 号：TM561[电气工程—电器]