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《AUTOMATION OF ELECTRIC POWER SYSTEMS》 2000-20
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A NEW NUMERICAL METHOD FOR COMPUTING ELECTROMAGNETIC TRANSIENTSOF HV TRANSMISSION LINE FAULTS AND CIRCUIT BREAKER OPERATIONS

Shu Hongchun, St Dajun, Gao Feng, Ge Yaozhong, Chen Xueyun(1. Kunming University of Science and Technology, Kunming 650051, China)(2. Xi'an Jiaotong University, Xi'an 710049, China)(3. Harbin institute of Technology, Harbin 150001, China)  
A new method for accurately computing the electromagnetic transients on long transmission lines caused by short/open circuit faults or on/off switching operations of circuit breakers is proposed in this paper. It is based on multi-conductortransmission line theory, frequency--domain analysis approach, numerical Laplace inverse transformation and convolution. andespecially the effect of fault electric arcs is considered herein such that the simulation is more realistic. The computation isperformed in ABC reference frames. It has the following advantages: (1) the frequent-dependency of line parameters and theinfluence of fault electric arcs can be taken into account: (2) transposed or untransposed. single-- or double-circuit lines andthe non--diagonalizable line constant matrices Z and Y can be analyzed; (3) phase-angle of voltage (for short--circuit) orcurrent (for open-circuit) at the instant when fault happens and the phase-angle of current at the instant when circuit breakerswitches can be arbitrarily designated.
【Fund】: 云南省科学与技术学术带头人培养基金;; 云南省自然科学应用基础研究基金! (98E1 63M);; 云南省教委科学基金!(1 4991 2 0 2 4 );; 云
【CateGory Index】: TM743
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