基于特征线的短线路解耦方法及其仿真分析  

Decoupling Method of Short Line Based on Characteristic Line and Its Simulation Analysis

作　　者：刘科研 贾东梨 何辉 魏雨涵 杨志淳 LIU Keyan;JIA Dongli;HE Hui;WEI Yuhan;YANG Zhichun(Power Distribution Technology Center,China Electric Power Research Institute Co.,Ltd.,Beijing 100192,China;Electric Power Research Institute,State Grid Hubei Electric Power Co.,Ltd.,Wuhan 430077,China)

机构地区：[1]中国电力科学研究院有限公司配电技术中心,北京100192 [2]国网湖北省电力有限公司电力科学研究院,湖北武汉430077

出　　处：《电力信息与通信技术》2021年第9期93-99,共7页Electric Power Information and Communication Technology

基　　金：国家电网有限公司总部科技项目资助“面向多流融合的有源配电网仿真与测试验证关键装备研发及应用”(5400-202122147A-0-0-00)。

摘　　要：为了全面反映分布式电源给配电网带来的暂态过程以及分布式电源并网给主动配电网仿真速度带来的限制,急需提升暂态仿真速度。目前多采用分核并行仿真方式进行提速,即通过分布式参数长线路解耦方法将配电网进行分区解耦,但是由于配电网的短线路特性导致传统长线路解耦方法并不适用于配电网,所以文章对其进行改进,以行波理论详细分析,提出增加分布式电容的基于特征线的短线路解耦方法,并进行了仿真分析,验证了其有效性。In order to fully reflect the transient process brought by distributed generation to the distribution network and the limitation of distributed generation grid connection to the simulation speed of active distribution network,it is urgent to increase the speed of transient simulation.At present,the split-core parallel simulation method is often used to speed up,that is,the distribution network is decoupled by the distributed parameter long line decoupling method.However,due to the short line characteristics of the distribution network,the traditional long line decoupling method is not suitable for distribution network,so this paper improves it,analyzes in detail with traveling wave theory,proposes a short line decoupling method based on characteristic line that adds distributed capacitors,and conducts simulation analysis to verify its effectiveness.

关 键 词：分布式电源 分布式参数 行波理论 短线路解耦 

分 类 号：TM769[电气工程—电力系统及自动化]