检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:黄宇[1] 吴金波 唐世雄 陈香香 朱生辉 HUANG Yu;WU Jinbo;TANG Shixiong;CHEN Xiangxiang;ZHU Shenghui(State Grid Sichuan Electrical Power UHVDC Center,Chengdu 610041,Sichuan,China;XJ Electric Co.,Ltd.,Xuchang 461000,Henan,China)
机构地区:[1]国网四川省电力公司特高压直流中心,四川成都610041 [2]许继电气股份有限公司,河南许昌461000
出 处:《四川电力技术》2023年第3期58-65,共8页Sichuan Electric Power Technology
摘 要:文中介绍了张北柔性直流输电工程主回路结构、运行方式、接地极及其作用并阐明了作为接地极的接地电阻的重要性。针对接地极可能出现的故障,研究分析了可以采取的实时监测方法;比较了电压电流法和注入法的差异,并说明张北柔性直流工程采用注入法的原因和优势;分析了注入信号频率的选择依据,并根据张北柔性直流工程的系统特性、参数,选配满足注入法原理对应的一次设备以及监测回路结构组成。通过理论分析与系统仿真试验,验证了有无阻波器对主系统的影响;最后,确定了张北柔性直流输电工程接地极在线监测的技术方案。The main circuit structure,operation mode,grounding electrode and its function of Zhangbei flexible DC transmission project are introduced,and the importance of grounding resistance as grounding electrode is described.Aiming at the possible faults of grounding electrode,the adopted real-time monitoring methods are studied and analyzed.The differences between voltage and current method and injection method are compared,and the reasons and advantages using injection method for Zhangbei flexible DC project are also explained.The selection basis of injection signal frequency is analyzed.According to the system characteristics and parameters of Zhangbei flexible DC project,the primary equipment and the structure of monitoring circuit are selected to meet the injection principle.Through the theoretical analysis and system simulation test,the influence of wave trap coil or not on main system is verified.Finally,the technical scheme of on-line monitoring of grounding electrode in Zhangbei flexible DC project is determined.
分 类 号:TM721.1[电气工程—电力系统及自动化]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.179