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《Proceedings of the Csee》 2004-11
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A NEW APPROACH FOR FAULT CALCULATION IN ASYMMETRICAL THREE-PHASE AND WEAKLY MESHED DISTRIBUTION NETWORK

FU Xu, Wang Xi-fan (Shool of Electrical Engineering, Xian Jiaotong University, Xian 710049, Shaanxi Province, China)  
According to the structure feature of the weakly meshed distribution network, a new method for fault calculation is proposed in this paper. The weakly meshed network is divided into two networks: one is the pure radial network and the other is the pure meshed network. The final solution is obtained by using the superposition principle. The proposed algorithm has many advantages: ① it is easy to deal with the unbalance in three phase by adopting phase component; ② the network nodal complex admittance matrices are avoided in fault calculation; ③ the method is adaptable to network topology changes; ④it is very simple o deal with the influence of fault current limiters; ⑤The approach is precise and effective. The numerical example shows that this method is very effective for fault calculation in asymmetrical three-phase and meshed distribution network.
【CateGory Index】: TM744
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