电力系统自动化2017，Vol.41Issue(12)：40-47,8.DOI:10.7500/AEPS20161026006
基于SVG的电网多节点电压不平衡综合抑制方法
SVG Based Comprehensive Unbalance Suppression Method for Multi-node Voltage
摘要
Abstract
This paper proposes the compensating strategy of static var generator (SVG) for multi-node voltage imbalance in power grid.Firstly, the multi-node unbalance mathematical model of power grid is established by combining symmetrical component method, and the mechanism of single SVG compensating multi-node voltage imbalance is analyzed.Secondly, the optimization problem of SVG is formulated with two different network unbalance control targets (minimize the sum of squared negative sequence voltage amplitude at each node and ensure the voltage unbalance factor not to exceed 2%), and solved by nonlinear programming theory and geometric assistant analysis.On the basis of these, this paper proposes that a comprehensive management system can be built by the combination of power quality monitoring equipment and SVG, and the online control of this SVG can be realized by online impedance measurement and online instruction optimization.Finally a simple grid model is built in PSCAD to verify the effectiveness of the proposed method.关键词
静止无功发生器/电压不平衡综合治理/在线阻抗测量/在线优化Key words
static var generator (SVG)/voltage unbalance comprehensive suppression/online impedance measurement/online optimization引用本文复制引用
翟灏,卓放,易皓,王振雄,史书怀,曾志嵘..基于SVG的电网多节点电压不平衡综合抑制方法[J].电力系统自动化,2017,41(12):40-47,8.基金项目
国家高技术研究发展计划(863计划)资助项目(2015AA050606).This work is supported by National High Technology Research and Development Program of China (863 Program) (No.2015AA050606). （863计划）
