大规模电网分层分区无功优化  

Reactive Power Optimization of Large Power Grid Under Voltage-Grading and District-Dividing

作　　者：阳育德[1] 龚利武 韦化[1] 

机构地区：[1]广西电力系统最优化与节能技术重点实验室(广西大学),广西壮族自治区南宁市530004

出　　处：《电网技术》2015年第6期1617-1622,共6页Power System Technology

基　　金：国家重点基础研究发展计划项目(973项目)(2013CB 228205)~~

摘　　要：提出了一种大规模电网分层分区无功优化模型及其算法。根据电网解环运行及分层分区管理的特点,采用节点分裂法将电网进行分层分区解耦,即将220 k V与110 k V电网进行分层,110 k V电网分区管理。建立相应的分解协调模型,并通过分解协调内点法进行求解。该方法仅交换子网间少许的边界变量就可以将大系统完全等效解耦,使修正方程仅保留220 k V及以上电压等级主干网部分,从而使问题的求解趋于简便、快速。通过对8个测试算例的仿真分析,结果表明所提模型满足电网分层分区无功优化运行,具有较强的收敛性和快速性。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 kV and 110 kV power grid will be divided into different voltage-grading, while the 110 kV 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 kV 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.

关 键 词：大规模电网 无功优化 分解协调 分层分区 原始-对偶内点法 

分 类 号：TM721[电气工程—电力系统及自动化]