特高压线路采用HSGS限制潜供电流的研究  

Study on secondary arc current of UHV line using HSGS

作　　者：吴剑凌[1] 张思[2,3] 张仪 潘少良 潘红武 吴国英 周浩[3] 

机构地区：[1]浙江省电力公司,浙江杭州310007 [2]慈溪供电局,浙江慈溪315300 [3]浙江大学电气工程学院,浙江杭州310027 [4]湖州电力公司,浙江湖州313000 [5]湖州电力设计院,浙江湖州313000

出　　处：《电力系统保护与控制》2010年第6期52-55,共4页Power System Protection and Control

摘　　要：基于1 000 kV双端电源输电线路模型,利用EMTP仿真计算加装HSGS前后潜供电流的变化情况。研究表明,采用HSGS限制潜供电流的方法适用于较短的、不需要高抗补偿和换位的线路,一般要求200 km以内。HSGS的接地电阻对HSGS限制潜供电流效果的影响很大,应该小于0.5Ω。并分析了HSGS的接地电阻大于1.5Ω时,150 km线路两端的潜供电流比加装前大的现象。对不同长度的装有HSGS的线路分别仿真可知,线路越长,潜供电流和恢复电压的值越大。The model of 1000 kV transmission line with two sources is established,based on which the secondary arc currents are calculated with EMTP for that with and without the HSGS.It shows that the HSGS is feasible for a shorter line which need not shunt reactor and transposition,generally shorter than 200 km.The grounding resistance of HSGS influences obviously the limiting effect of HSGS,and it should be set at less than 0.5 Ω.Then the phenomenon that the secondary arc current increased after using HSGS with a resistance bigger than 1.5 Ω on sides of the 150 km line is discussed.Simulations are carried out for lines with different length,which shows that,the longer the line with HSGS is,the bigger the secondary arc current and recovery voltage will be.

关 键 词：特高压 仿真 潜供电流 快速接地开关 重合闸 

分 类 号：TM723[电气工程—电力系统及自动化]