±10kV柔性直流配电系统接地方案研究  

Research on Grounding Scheme for ±10kV Flexible DC Power Distribution System

作　　者：何秋萍[1] 韩永霞[1] 阮耀萱 赵宇明 姚森敬 刘国伟 

机构地区：[1]华南理工大学电力学院,广东广州510640 [2]深圳供电局有限公司,广东深圳518000

出　　处：《广东电力》2015年第12期109-114,共6页Guangdong Electric Power

基　　金：国家高技术研究发展计划(863计划)资助项目(2013AA050104);广东省自然科学基金资助项目(2014A030313249)

摘　　要：针对直流配电系统的接地方案开展理论分析和仿真研究,从系统主接线方式、入地电流要求、直流偏磁和继电保护要求等理论分析接地方式和接地电阻的取值范围,在电力系统计算机辅助设计和电磁暂态模拟程序(power system computer aided design and electric magnetic transient in DC system,PSCAD/EMTDC)软件中建立基于柔性直流的±10 kV直流配电系统的仿真模型来分析单极接地故障时关键位置的电流和电压特性,并验证接地方案的可行性,为系统设计提供依据。in allusion to the grounding scheme for DC power distribution system, this paper carries out theoretical analysis and simulation research, analyzes grounding modes and value range of grounding resistance in aspects of main connection mode of the system, requirement of earth current, DC bias, requirement of relay protection, and so on. In power system computer aided design and electric magnetic transient in DC system （PSCAD/EMTDC） software, it establishes simulation model based on ±10 kV flexible DC power distribution system to analyze characteristics of current and voltage in key position at the time of single-pole grounding fault. It also verifies feasibility of this grounding scheme which may provide basis for sys- tem design,

关 键 词：柔性直流 配电系统 接地方案 过电压 过电流 PSCAD/EMTDC 

分 类 号：TM853[电气工程—高电压与绝缘技术]