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《Power System Technology》 2015-06
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Reactive Power Optimization of Large Power Grid Under Voltage-Grading and District-Dividing

YANG Yude;GONG Liwu;WEI Hua;Guangxi Key Laboratory of Power System Optimization and Energy Technology (Guangxi University);  
This paper presented a model of reactive power optimization of large power grid under voltage-grading and district-dividing method and its algorithm. According to the characteristics of opening loop operation, the power grid is divided into different voltage-grading and district-dividing by the node split method. The 220 k V and 110 k V power grid will be divided into different voltage-grading, while the 110 k V power grid will be managed by district-dividing method. Decomposition-coordination reactive power optimization model is established and solved by decomposition-coordination interior method. The quite equivalent decoupling method could make the correction equation remains the voltage great than or equal to 220 k V by exchanging few boundary variables only. By simulating analysis from eight test systems, this proposed model meets reactive power optimization of power grid under voltage-grading and district-dividing with higher efficiency and convergence.
【Fund】: 国家重点基础研究发展计划项目(973项目)(2013CB 228205)~~
【CateGory Index】: TM714.3
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