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《AUTOMATION OF ELECTRIC POWER SYSTEMS》 1998-11
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AN ACCURATE FAULT LOCATION METHOD SUITABLE FOR EHV TRANSMISSION LINE WITH ANY LINE CONSTRUCTION

Lu Jiping; Ye Yilin (Chongqing University. 400044. Chongqing. China)  
The modal analysis theory can be used to calculate the wave equations of polyphase transmission line. On the basis of the principle of eigenvalues and eigenvectors. this theory changes polyphase wave equations into independent modal wave equations. After solving the modal wave equations respectively. the theory changes the results into polyphase conversely.Referring to the real construction of transmission line. this paper presents a fault location method suitable for extra-high voltage transmission line based on the modal analysis theory. This method has solved the influence of the non-equilibrium parameters of transmission line on fault location. It suits not only the untransposed line but also the transposed line. The test results show the accuracy of this fault location method.
【CateGory Index】: TM755
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