电网技术2016，Vol.40Issue(6)：1807-1813,7.DOI:10.13335/j.1000-3673.pst.2016.06.029
动态无功优化的多阶段求解方法
A Multi-Stage Solution Approach for Dynamic Reactive Power Optimization
摘要
Abstract
Dynamic reactive power optimization (DRPO) isasignificantapproachto ensure safeand economic operation of power systems. It is a large-scale, multi-period and strongly coupled nonlinear mixed-integer programming (MIP) problem, which isdifficult to solve directly. Therefore, based on physical insight of DRPO, this paper proposes a multi-stage modelling and solution approach for DRPO, especially focusing on handling discrete variables and switching operation constraints. Itdivides a complicated mixed-integer non-linear programming (MINLP) problem into a non-linear programming (NLP) and a MIP problem. In the first-stage,theobjective is to minimize total system loss.Interior point method is adopted to obtain continuous initial solutions by relaxing discrete variables and switching operation constraints. In the second-stage,the objective is to minimize incremental system loss.Its sub-problem is linearized near current solutions based on sensitivities of control variables corresponding to objective function. A MIP model is formulated to optimize discrete variables subject to switchingoperation constraints. Next, results of the second-stage problemaresubstituted in the first-stage problem to complete whole DRPO. Finally, Ward &Hale 6 bus test system and a practical system of some province of China are presented to verify effectiveness and applicability of the proposed model and approach.关键词
动态无功优化/多阶段/动作次数限制/内点法/混合整数规划Key words
dynamic reactive power optimization/multi-stage modelling/switching operation time limit/interior point approach/mixed-integer programming分类
信息技术与安全科学引用本文复制引用
孙田,邹鹏,杨知方,钟海旺,戴国华,夏清..动态无功优化的多阶段求解方法[J].电网技术,2016,40(6):1807-1813,7.基金项目
国家自然科学基金项目(51537005)。Project Supported by National Natural Science Foundation of China(NSFC)(51537005) （51537005）
