|
|
|
| Testability Analysis of Corrosion Diagnosis for Grounding Grids |
| Niu Tao1, 2, Luo Xianjue1, Wang Sen3, Zhang Debo1, Liu Liqiang1, Zhang Yingjiao1 |
| 1. Xi’an Jiaotong University Xi’an 710049 China 2. Jiangsu Electric Power Design Institute Nanjing 211102 China 3. Shaanxi Electric Power Research Institute Xi’an 710045 China |
|
|
|
|
Abstract Testability of grounding grids is decided by network topology and reachable nodes’ location rather than resistance. In order to research the testability, a new method which applied to corrosion diagnosis is presented. In this method, unreachable nodes are eliminated by network transformation, and then the testability is confirmed gradually in reverse direction. Creditability index is firstly proposed to indicate the credibility of diagnosis result, and the calculating formula is also established. Simulation results show the validity of this approach, and the creditability index can well reflect the errors of diagnosis results. Testability results and creditability index provide valuable information for the actual diagnosis work.
|
|
Received: 30 November 2009
Published: 04 March 2014
|
|
|
|
|
|
[1] 张丽萍, 袁建生, 李中新. 一个实际变电站接地网的计算机模拟计算与分析[J]. 电工技术学报, 2000, 15(1): 72-75.
[2] 张波, 崔翔, 赵志斌, 等. 大型变电站接地网的频域分析方法[J]. 中国电机工程学报, 2002, 22(9): 59- 63.
[3] 鲁志伟, 文习山, 史艳玲, 等. 大型变电站接地网工频接地参数的数值计算[J]. 中国电机工程学报, 2003, 23(12): 89-93.
[4] 张晓玲, 陈先禄. 优化技术在发、变电所接地网故障诊断中的应用[J]. 高电压技术, 2000, 26(4): 64- 66.
[5] 肖新华, 刘华, 陈先禄, 等. 接地网腐蚀和断点的诊断理论分析[J]. 重庆大学学报(自然科学版), 2001, 24(3): 72-75.
[6] Hu Jun, Zeng Rong, He Jinliang, et al. Novel method of corrosion diagnosis for grounding grid[C]. Proceedings of Power Con., 2000: 1365-1370.
[7] Zeng Rong, He Jinliang, Hu Jun, et al. The theory and implementation of corrosion diagnosis for grounding system[C]. Proceedings of Power Con. 2002: 1120- 1126.
[8] 刘健, 王建新, 王森. 一种改进的接地网故障诊断算法及测试方案评价[J]. 中国电机工程学报, 2005, 25(3): 71-77.
[9] 刘健, 王树奇, 李志忠, 等. 接地网腐蚀故障诊断的可测性研究[J]. 高电压技术, 2008, 34(1): 64-69.
[10] 王建新, 刘健, 王树奇, 等. 基于蒙特卡罗的接地网故障诊断可测性分析[J]. 电测与仪表, 2008, 45 (2): 53-57.
[11] 刘健, 王树奇, 李志忠, 等. 基于网络拓扑分层约简的接地网腐蚀故障诊断[J]. 中国电机工程学报, 2008, 28(16): 122-128.
[12] Edward Liu, William Kao, Eric Felt, et al. Analog testability analysis and fault diagnosis using behavioral modeling[C]. Proceedings of the 1994 IEEE Conference on Custom Integrated Circuits(CICC’94), 1994: 413-416.
[13] Starzyk J A, Pang J, Manetti S, et al. Finding ambig- uity groups in low testability analog circuits[J]. IEEE Transactions on Circuits and System I: Fundamental Theory and Applications, 2000, 47(8): 1125-1137.
[14] 蔡国昌. 无源网络中多角形—星形电路的等效变 换[J]. 湖南大学学报, 1989, 16(2): 88-93. |
|
|
|
2010, Vol. 25 
