交直流互联电网动态无功优化三阶段递进求解方法  

Three-Stage Progressive Solution for Dynamic Reactive Power Optimization of AC/DC Interconnection Grids

作　　者：任景 赖晓文 马晓伟 张小东 汪洋 辛焱 薛艳军 Ren Jing;Lai Xiaowen;Ma Xiaowei;Zhang Xiaodong;Wang Yang;Xin Yan;Xue Yanjun(Regulation Sub-Center,Northwest Branch of State Grid Corporation of China,Xi’an Shaanxi 710048,China;Beijing TsIntergy Technology Co.,Ltd.,Beijing 100080,China;Beijing QU Creative Technology Co.,Ltd.,Beijing 100080,China)

机构地区：[1]国家电网公司西北分部调控分中心,陕西西安710048 [2]北京清能互联科技有限公司,北京100080 [3]北京清大科越股份有限公司,北京100080

出　　处：《电气自动化》2020年第5期1-4,共4页Electrical Automation

摘　　要：为高效、安全地实现大规模交直流互联电网资源的优化配置,提高电网运行经济性,首先考虑离散无功控制变量的时间耦合约束和直流输电系统的稳态运行约束,建立了交直流互联电网动态无功优化的数学模型。然后针对复杂非凸非线性混合整数规划问题模型,提出三阶段递进求解方法,巧妙联立整数性因素和非线性因素分阶段处理,降低了模型求解难度。基于CEPRI-6机22节点测试系统算例结果,证明动态无功优化算法鲁棒性好,能有效改善交直流互联电网无功分布,显著提升了大电网安全经济运行水平。For the purpose of efficient,safe implementation of optimal configuration of large-scale AC/DC interconnection grid resources and improvement of grid operating economy,firstly,a mathematical model was established for dynamic reactive power optimization(DRPO)of AC/DC interconnection grids under consideration of time coupling constraint of discrete reactive control variables as well as steady-state operation constraint of the DC power transmission system.Then,with regards to the model for complex,non-convex and nonlinear mixed integer programming problem,a three-stage progressive solution method was proposed to determine integer factors and nonlinear factors skillfully for processing at different stages,thus reducing the difficulty in model solution.The results of CEPRI-622-node examples test proved that the DRPO algorithm had good robustness,and could improve reactive power distribution of AC/DC interconnection grids effectively and grealy raise the level of safe and economic operation of large power grids.

关 键 词：无功优化 交直流互联电网 三阶段方法 混合整数规划 优化算法 

分 类 号：TM711[电气工程—电力系统及自动化]