文档介绍：华北电力大学硕士学位论文摘要为了实施国家“西电东送’’的战略,实现资源能源的优化配置和促进东西部经济可持续发展,南方电网多年来,实现了与国内多省区、香港的联网,“西电东送”的主干网架和各省区电网结构逐年加强。作为“西电东送”的重点工程之一,三广直流实现了南方电网与华中电网非同步联网,使南方电网在国内形成第一个远距离、大容量、超高压输电,交直流并联运行的大电网。但随着电网规模的扩大,在带来巨大经济效益的同时,使得电网的运行和管理更为复杂,尤其是天广、贵广、三广、云广四条直流同时落点广东,也给电网的安全运行带来了许多新的技术问题。本文主要研究了博罗换流站接地极电流对惠州电网影响,包括实测了惠州多个变电站在直流系统不同运行方式下流过主变中性点的电流值,在对实测数据深入分析、研究基础上,研究限制变压器中性点的直流电流的技术措施,技术方案在惠州电网直流输电接地极入地电流治理项目中得到应用。该项工作对保障惠州电网安全意义重大。关键词:换流站;直流接地极电流;变压器;影响; 华北电力大学硕七学位论文 Abstract Inorder toimplement thenational”west toeast,”thestrategies toachieve the optimum allocation of resources and energy and the promotion of sustainable economic development ofEastern,China Southem Power Grid over the years, achieved with many domestic provinces,Hong Kong’Snetwork,”West toEast”The main酊d and theprovinces power鲥d structures have been the ”Plan”one ofthekeyprojects,three oftheChina Southern Power Grid toachieve wide DC power non-synchronous interconnection with the Central China,China Southern Power Grid inthecountry toform the firstlong—distance,higll·capacity, highpressure and DC paralleloperation largepower grids. But with theexpansion ofpower,bringing huge economic benefits atthesame time,making work operation andmanagement plex,especially in broad day,your wide,three wide,four DC while placement ofYunnan toGuangdong, butalso tothegrid hasbrought thesafeoperation ofmany new technical problems. This paper studies the Boro current conveaer station grounding grid ofHuizhou, including the actual number ofsubstation inHuizhou DC system under various operation flowing through themaintransformer neutral point current value,in-depth analysis ofthemeasured data,the research base thestudy was limited by the DC current transformer neutraltechnical measures,technical solutions inHuizhou HVDC grounding grid into the earth current governance projects Huizhou power gridsafetyprotection ofthework ofgreat significance. Keywords:Converter Station;DC Ground Current;T