Fault location of untransposed double-circuit transmission lines based on an improved Karrenbauer matrix and the QPSO algorithm

作     者：Minan Tang Hang Lu Bin Li 

作者机构：School of New Energy and Power EngineeringLanzhou Jiaotong UniversityLanzhouChina School of Electrical and Information EngineeringTianjin UniversityTianjinChina. 

出 版 物：《Protection and Control of Modern Power Systems》 (现代电力系统保护与控制（英文）)

年 卷 期：2023年第8卷第3期

页      面：139-152页

核心收录：

学科分类：080802[工学-电力系统及其自动化] 0808[工学-电气工程] 08[工学] 

基　　金：funded by the National Natural Science Foundation of China(No.62363022,61663021,71763025,61861025) the Natural Science Foundation of Gansu Province(No.23JRRA886) the Gansu Provincial Department of Education:Industrial Support Plan Project(No.2023CYZC-35) 

主　　题：Fault location Untransposed double-circuit transmission lines Karrenbauer matrix Quantum particle 

摘      要：Some double-circuit transmission lines are untransposed,which results in complex coupling relations between the parameters of the transmission *** the traditional modal transformation matrix is directly used to decouple the parameters,it can lead to large errors in the decoupled modal parameter,errors which will be amplified in the fault location ***,it makes the fault location results of the untransposed double-circuit transmission lines less ***,a new modal transformation method is needed to decou-ple the parameter matrix of untransposed double-circuit transmission lines and realize the fault location according to the decoupled modal *** improving the basis of the Karrenbauer matrix,a modal transformation matrix suitable for decoupling parameters of untransposed double-circuit transmission lines is *** address the dif-ficulties in solving the fault location equation of untransposed double-circuit transmission lines,a new fault location method based on an improved Karrenbauer matrix and the quantum-behaved particle swarm optimization(QPSO)algorithm is ***,the line parameter matrix is decomposed into identical and inverse sequence compo-nents using the identical-inverse sequence component *** Karrenbauer matrix is then transformed to obtain the improved Karrenbauer matrix for untransposed double-circuit transmission lines and applied to identi-cal and inverse sequence components to solve the decoupled modal ***,based on the principle that voltage magnitudes at both ends are equal,the fault location equation is expressed using sequence compo-nents at each end,and the QPSO algorithm is introduced to solve the ***,the feasibility and accuracy of the proposed method are verified by PSCAD *** simulation results fully demonstrate that the innova-tive improvement on the basis of the traditional modal transformation matrix in this paper can realize the m