兆瓦级电池储能电站直流系统故障分析与保护方案设计  

DC System Fault Analysis and Protection Scheme Design for Megawatt Level Battery Energy Storage System

作　　者：黄文焘[1] 邰能灵[1] 陈彬[2] 陈金祥[2] 惠东[3] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海市200240 [2]福建省电力试验研究院系统所,福建省福州市350003 [3]中国电力科学研究院电工与新材料研究所,北京市100192

出　　处：《电力系统自动化》2013年第1期76-83,167,共9页Automation of Electric Power Systems

基　　金：教育部新世纪优秀人才支持计划资助项目(NCET-08-0356)~~

摘　　要：大容量电池储能电站在电力系统中的应用越来越多,保护配置策略对储能电站及其所在配电网的安全运行十分重要。文中首先介绍了兆瓦级电池储能电站的系统结构、直流侧接线方式及接地方式。然后,以储能电站的直流系统为研究对象,分析极地短路故障和极间短路故障的电气量特点。在此基础上,提出直流系统极间短路、直流接地系统极地短路保护配置以及直流非接地系统接地监控方法。最后,利用PSCAD/EMTDC建立仿真模型,验证保护方案的可靠性及有效性。With the ever-widening application of large-scale battery energy storage station（BESS）to the power system,protection schemes are becoming increasingly essential to the BESS and the distributed network where it is accessed.This paper describes the structure of megawatt-level BESS,the connection mode and the grounding way first.Then focus is on the DC system of BESS and the characteristics of electrical quantities are analyzed when pole-to-pole fault and pole-to-earth fault occurred in different DC systems.Protection strategies for pole-to-pole fault and pole-to-ground fault in DC system are put forward based on the results of fault analysis.Grounded supervision of non-grounding DC system is also proposed.Finally,the characteristics of the faults and protection strategies are verified by the simulation of PSCAD/EMTDC.

关 键 词：电池储能 直流系统 故障分析 保护策略 接地监控 

分 类 号：TM73[电气工程—电力系统及自动化]