|
|
|
| Analysis and Countermeasure on Abnormal Operation of One 110kV Intelligent Substation Merging Unit |
| Ji Jianfei1,Yuan Yubo1,ang Lihui2,Bu Qiangsheng1 |
1. Jiangsu Electric Power Research Institute Co., Ltd. Nanjing 210000 China;
2. Southeast University Nanjing 210096 China |
|
|
|
|
Abstract The secondary circuit of substation is located in harsh EMI(electromagnetic inter- ference) environment, and the intelligent device may be affected by the electromagnetic disturbance signal. At the same time, as the field installation of intelligent device, the electromagnetic disturbance becomes furthermore intensified. Recently, because the transformer substation’s secondary circuit is affected by the interference of switch operations, many intelligent devices run abnormally. It is very important and meaningful to study the EMC(electro magnetic compatibility) problem of the trans- former substation’s secondary circuit. One 110kV intelligent substation merging unit runs abnormally. Firstly, the reason of abnormal operation of merging unit is analyzed by exclusive method. Secondly, the EMC experiments regulated by the IEC61000—4 standard and above the standard are carried out, and at the basis of the experiments, the structure of merging unit is improved. Thirdly, the electromagnetic disturbance signal is recorded; the characteristics of amplitude and time-frequency of the recorded signal are analyzed. Finally, some suggestions about improving the EMC performance of merging unit are put forward.
|
|
Received: 21 November 2013
Published: 14 September 2015
|
|
|
|
|
|
[1] 张重远. 气体绝缘变电站开关操作产生的电磁干扰问题研究[D]. 北京: 华北电力大学, 2004.
[2] 候俊, 王建国, 饶章权, 等. 500kV隔离开关操作时电流互感器二次侧干扰信号的测试与分析[J]. 电测与仪表, 2005, 42(474): 41-43. Hou Jun, Wang Jianguo, Rao Zhangquan, et al. The disturbance in the secondary signal of CT in 500kV insulated switch operation[J]. Electrical Measurement & Instrumentation, 2005, 42(474): 41-43.
[3] 张重远, 梁贵书, 崔翔, 等. GIS隔离开关操作对二次设备的影响[J]. 高电压技术, 2002, 28(2): 5-7. Zhang Chongyuan, Liang Guishu, Cui Xiang, et al. The effects of operations of the disconnector switch on the secondary circuits in gas insulated substations [J]. High Vlotage Engineering, 2002, 28(2): 5-7.
[4] 巩学海, 何金良. 变电所二次系统电磁兼容抗扰度指标分析[J]. 高电压技术, 2008, 34(11): 2412-2416. Gong Xuehai, He Jingliang. Analysis on electro- magnetic compatibil ity immunity indexes for secondary systems of substation[J]. High Vlotage Engineering, 2008, 34(11): 2412-2416.
[5] 卢斌先, 王泽忠, 李成榕, 等. 500kV变电站开关操作瞬态电场测量与研究[J]. 中国电机工程学报, 2004, 24(4): 137-142. Lu Binxian, Wang Zezhong, Li Chengrong, et al. Measurements and research of switching operation transient[J]. Proceedings of the CSEE, 2004, 24(4): 137-142.
[6] 高长征. 复杂结构电磁场问题的快递计算方法研究及其应用[D]. 北京: 华北电力大学, 2009. |
|
|
|
2015, Vol. 30 
