Title :
A new fault location algorithm for EHVAC mixed cable-overhead line based on fault zone identification
Author :
Yao, C. ; Li, Y.L. ; Li, B.T. ; Yi, H. ; Hu, Y. ; Li, W.G.
Author_Institution :
Key Lab. of Smart Grid of Minist. of Educ., Tianjin Univ., Tianjin, China
Abstract :
A new fault location algorithm for EHVAC mixed cable-overhead line based on fault zone identification is proposed. When the failure happened, first, according to the uniform transmission line equations, taking cable-overhead line connection point as reference, this article puts forward the fault zone identification method; then, deducts fault point positioning functions in different sections and gets the accuracy position of the fault point by searching or calculating method; finally, conducts quantitative analysis for the influence factors of the algorithm accuracy and conclusions are given. The algorithm uses two-terminal synchronous data, fast calculation speed and high precision, not affected by the failure transition resistance. Simulation shows that this method has a high reliability.
Keywords :
power cables; power overhead lines; power transmission faults; EHVAC mixed cable-overhead line; cable-overhead line connection point; fault location algorithm; fault zone identification method; transmission line equations; two-terminal synchronous data; Educational institutions; Fault location; Hybrid power systems; Power cables; Resistance; Cable parameter; EMTDC simulation; fault location; fault zone; mixed cable-overhead line; phasor calculation; synchronization; transition resistance; two-terminal data; uniform transmission line equations;
Conference_Titel :
Innovative Smart Grid Technologies - Asia (ISGT Asia), 2012 IEEE
Conference_Location :
Tianjin
Print_ISBN :
978-1-4673-1221-9
DOI :
10.1109/ISGT-Asia.2012.6303384