Electric Power ›› 2025, Vol. 58 ›› Issue (7): 128-136.DOI: 10.11930/j.issn.1004-9649.202409057
• New-Type Power Grid • Previous Articles Next Articles
					
													CAO Haiou1(
), HU Xiaoli2(
), DAI Wei1(
), HU Jiatong2(
), LI Ping3(
), ZHANG Yue4(
)
												  
						
						
						
					
				
Received:2024-09-12
															
							
															
							
															
							
																	Online:2025-07-30
															
							
							
																	Published:2025-07-28
															
							
						Supported by:CAO Haiou, HU Xiaoli, DAI Wei, HU Jiatong, LI Ping, ZHANG Yue. A Power Grid Fault Diagnosis Method of Online Monitoring System for Relay Protection under Multiple Dimensionality Reduction[J]. Electric Power, 2025, 58(7): 128-136.
| 分支 | 节点和区段 | |
| 1 | 7、8;(6)(7)(8) | |
| 2 | 4、5;(3)(4)(5) | |
| 3 | 11;(9)(10) | |
| 4 | 14、15、16;(12)(13)(14)(15) | |
| 5 | 19、20;(16)(17)(18) | |
| 6 | 24、25、26;(21)(22)(23)(24) | |
| 7 | 29;(25)(26) | 
Table 1 Branch internal structure
| 分支 | 节点和区段 | |
| 1 | 7、8;(6)(7)(8) | |
| 2 | 4、5;(3)(4)(5) | |
| 3 | 11;(9)(10) | |
| 4 | 14、15、16;(12)(13)(14)(15) | |
| 5 | 19、20;(16)(17)(18) | |
| 6 | 24、25、26;(21)(22)(23)(24) | |
| 7 | 29;(25)(26) | 
| 开关过流信息 | 畸变位置 | 文献定位 | 本文定位 | |||
| [1,1,–1,–1,–1,–1,–1,–1,–1,–1, –1,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 无 | (2) | (2) | |||
| [1,1,–1,–1,–1,–1,–1,–1,–1,1, –1,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 10 | (2) | (2) | |||
| [1,1,–1,–1,–1,–1,–1,–1,–1,–1, –1,–1,–1,–1,1,–1,–1,–1,–1,–1]  | 15 | (2) | (2) | |||
| [1,1,–1,–1,–1,–1,–1,–1,–1,–1, 1,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 11 | (9) | (2) | |||
| [1,1,1,1,–1,–1,–1,–1,–1,–1, –1,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 3、4 | (4) | (2) | 
Table 2 Test result when segment (2) is faulty
| 开关过流信息 | 畸变位置 | 文献定位 | 本文定位 | |||
| [1,1,–1,–1,–1,–1,–1,–1,–1,–1, –1,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 无 | (2) | (2) | |||
| [1,1,–1,–1,–1,–1,–1,–1,–1,1, –1,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 10 | (2) | (2) | |||
| [1,1,–1,–1,–1,–1,–1,–1,–1,–1, –1,–1,–1,–1,1,–1,–1,–1,–1,–1]  | 15 | (2) | (2) | |||
| [1,1,–1,–1,–1,–1,–1,–1,–1,–1, 1,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 11 | (9) | (2) | |||
| [1,1,1,1,–1,–1,–1,–1,–1,–1, –1,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 3、4 | (4) | (2) | 
| 开关过流信息 | 畸变位置 | 文献定位 | 本文定位 | |||
| [1,1,1,1,–1,–1,–1,–1,–1,–1, –1,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 无 | (4) | (4) | |||
| [1,1,1,1,–1,–1,–1,–1,1,–1, –1,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 9 | (4) | (4) | |||
| [1,1,1,1,–1,–1,–1,–1,–1,–1, –1,–1,1,–1,–1,–1,–1,–1,–1,–1]  | 13 | (4) | (4) | |||
| [1,1,1,–1,–1,–1,–1,–1,–1,–1, –1,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 4 | (3) | (4) | |||
| [1,1,1,1,1,1,–1,–1,–1,–1, –1,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 5、6 | (6) | (4) | 
Table 3 Test result when segment (4) is faulty
| 开关过流信息 | 畸变位置 | 文献定位 | 本文定位 | |||
| [1,1,1,1,–1,–1,–1,–1,–1,–1, –1,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 无 | (4) | (4) | |||
| [1,1,1,1,–1,–1,–1,–1,1,–1, –1,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 9 | (4) | (4) | |||
| [1,1,1,1,–1,–1,–1,–1,–1,–1, –1,–1,1,–1,–1,–1,–1,–1,–1,–1]  | 13 | (4) | (4) | |||
| [1,1,1,–1,–1,–1,–1,–1,–1,–1, –1,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 4 | (3) | (4) | |||
| [1,1,1,1,1,1,–1,–1,–1,–1, –1,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 5、6 | (6) | (4) | 
| 开关过流信息 | 畸变位置 | 文献定位 | 本文定位 | |||
| [1,1,–1,–1,–1,–1,–1,–1,–1,–1, 0,0,–1,–1,–1,–1,–1,–1,–1,–1]  | 无 | (2)(11) | (2)(11) | |||
| [1,1,–1,–1,1,–1,–1,–1,–1,–1, 0,0,–1,–1,–1,–1,–1,–1,–1,–1]  | 5 | (2)(11) | (2)(11) | |||
| [1,1,0,0,–1,–1,–1,–1,–1,–1, 0,0,–1,–1,–1,–1,–1,–1,–1,–1]  | 3 | (2)(3)(11) | (2)(11) | |||
| [1,1,–1,–1,–1,–1,–1,–1,–1,–1, 0,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 12 | (9)(10) | (2)(11) | |||
| [1,1,–1,–1,–1,–1,–1,–1,–1,–1, 1,0,0,–1,–1,–1,–1,–1,–1,–1]  | 11、13 | (10)(12) | (2)(11) | 
Table 4 Test result when segment (2) (11) are faulty
| 开关过流信息 | 畸变位置 | 文献定位 | 本文定位 | |||
| [1,1,–1,–1,–1,–1,–1,–1,–1,–1, 0,0,–1,–1,–1,–1,–1,–1,–1,–1]  | 无 | (2)(11) | (2)(11) | |||
| [1,1,–1,–1,1,–1,–1,–1,–1,–1, 0,0,–1,–1,–1,–1,–1,–1,–1,–1]  | 5 | (2)(11) | (2)(11) | |||
| [1,1,0,0,–1,–1,–1,–1,–1,–1, 0,0,–1,–1,–1,–1,–1,–1,–1,–1]  | 3 | (2)(3)(11) | (2)(11) | |||
| [1,1,–1,–1,–1,–1,–1,–1,–1,–1, 0,–1,–1,–1,–1,–1,–1,–1,–1,–1]  | 12 | (9)(10) | (2)(11) | |||
| [1,1,–1,–1,–1,–1,–1,–1,–1,–1, 1,0,0,–1,–1,–1,–1,–1,–1,–1]  | 11、13 | (10)(12) | (2)(11) | 
| 故障区段 | 开关畸 变位置  | 定位结果 | ||||||
| 方法1 | 方法2 | 方法3 | ||||||
| (2) | 无 | (2) | (2) | (2) | ||||
| (4) | 4 | (4) | (4) | (3) | ||||
| (2) | 9 | (2) | (2) | (9) | ||||
| (10) | 11 | (10) | (11) | |||||
Table 5 Comparison of fault location results
| 故障区段 | 开关畸 变位置  | 定位结果 | ||||||
| 方法1 | 方法2 | 方法3 | ||||||
| (2) | 无 | (2) | (2) | (2) | ||||
| (4) | 4 | (4) | (4) | (3) | ||||
| (2) | 9 | (2) | (2) | (9) | ||||
| (10) | 11 | (10) | (11) | |||||
| 故障区段 | 开关畸 变位置  | 平均迭代次数 | 未成熟收敛次数 | |||||||||||
| 方法1 | 方法2 | 方法3 | 方法1 | 方法2 | 方法3 | |||||||||
| (2) | 无 | 12.4 | 13.2 | 41.5 | 0 | 13 | 34 | |||||||
| (4) | 4 | 10.2 | 12.6 | 56.3 | 0 | 16 | 19 | |||||||
| (2) | 9 | 11.6 | 12.8 | 51.2 | 0 | 35 | 24 | |||||||
| (10) | 11 | |||||||||||||
Table 6 Comparison of fault location effects
| 故障区段 | 开关畸 变位置  | 平均迭代次数 | 未成熟收敛次数 | |||||||||||
| 方法1 | 方法2 | 方法3 | 方法1 | 方法2 | 方法3 | |||||||||
| (2) | 无 | 12.4 | 13.2 | 41.5 | 0 | 13 | 34 | |||||||
| (4) | 4 | 10.2 | 12.6 | 56.3 | 0 | 16 | 19 | |||||||
| (2) | 9 | 11.6 | 12.8 | 51.2 | 0 | 35 | 24 | |||||||
| (10) | 11 | |||||||||||||
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