Mutual impedance parameter modeling and accurate location algorithm of angled space crossed transmission lines
On the account of more and more inevitable scene of angled space crossed transmission line in real project , classical distribution parameter model is no longer applicable, and coupling effect between two lines needs to be reconsidered. This paper popularizes mutual impedance from limited conductor to angled space crossed lines, and analyses the characteristic of mutual impedance coefficient along the line. Based on the segmented nominal-π line model, in which mutual impedance of each section is obtained by Neumans Integral, the location equation is derived by utilizing the feature that the voltages calculated from two sides are equal at the fault point. Simulations in PSCAD compare the differences of fault-location results between in the condition of considering and ignoring coupling effect of space crossed transmission lines. The calculation results demonstrate that the proposed algorithm has higher accuracy, and is not affected by fault types.
angled space crossed transmission line coupling effect the segmented nominal-π line model zero sequence mutual impedance fault location
Ying Zhang Jun Liang Peng Wang
Key Laboratory of Power System Intelligent Dispatch and Control (Shandong University),Jinan 250061,C State Grid Dezhou Electric Power Supply Company,Dezhou 253000,China
国际会议
西安
英文
1-6
2016-09-01（万方平台首次上网日期，不代表论文的发表时间）