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

引用

Protection and Control of Modern Power Systems 2023年第3期8卷 139-152页

作者： Minan Tang Hang Lu Bin Li School of New Energy and Power Engineering Lanzhou Jiaotong UniversityLanzhouChina School of Electrical and Information Engineering Tianjin UniversityTianjinChina.

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

关键词： Fault location Untransposed double-circuit transmission lines karrenbauer matrix Quantum particle

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