JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2016, Vol. 46 ›› Issue (4): 117-124.doi: 10.6040/j.issn.1672-3961.0.2016.240

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Short circuit current limiting optimization of ultra-high voltage receiving-end power grid

ZHAO Kang1, WANG Chunyi2, YANG Dong3, LIU Yutian1*   

  1. 1. School of Electrical Eneering, Shandong University, Jinan 250061, Shandong, China;
    2. State Grid Shandong Electric Power Company, Jinan 250001, Shandong, China;
    3. Electric Power Research Institute, State Grid Shandong Electric Power Company, Jinan 250002, Shandong, China
  • Received:2016-07-01 Online:2016-08-20 Published:2016-07-01

Abstract: With the rapid construction of ultra-high voltage(UHV)power grid in China, the UHV transmission capacity was continuously improved, which could cause the exceeding of short circuit current(SCC), especially single-phase short circuit current(SSCC). The reasons of exceeding SSCC and dedicated limiting measure for SSCC were analyzed. Then, the limiting effectiveness and economy cost of different limiting measures were described as a unified form. An objective sensitity index was defined for limiting measure configuration object, which could be used to filter numerous configuration objects to avoid dimension disaster. With the economy cost and grid structure tightness as objective functions, a comprehensive limiting optimization model for ultra-high voltage receiving-end power system was founded. The self-adpative hybrid particle swarm optimization(PSO)algorithm was used to find the optimal limiting scheme. The case study of Jining region power system validated the effectiveness of the proposed optimization model.

Key words: ultra-high voltage grid, limiting sensitivity, limiting optimization, PSO algorithm, global energy internet, SCC

CLC Number: 

  • TM711
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