基于电压控制分区的发电机无功备用优化方法

发布时间：2018-02-20 06:34

本文关键词： 电压控制分区发电机无功备用逐次分区优化静态电压稳定无功优化调度　出处：《电力系统自动化》2015年04期 　论文类型：期刊论文

【摘要】：发电机无功备用对电力系统电压稳定和电压控制具有重要意义。提出了基于电压控制分区的区域发电机无功备用定义,该定义综合衡量了区域发电机无功备用对静态电压稳定和准稳态电压控制的价值以及无功备用的可供给性。分析了控制变量的特性和选取方式,建立了用于优化区域无功备用和区域电压水平的二次规划模型,提出了逐次分区优化求解算法。通过3节点系统算例验证了无功备用定义和控制变量选取方式的合理性。通过IEEE 118系统算例验证了优化方法的正确性和可行性,优化方案显著提高了区域无功备用量和电压稳定裕度,改善了电压水平。区域无功备用优化方法将高维的无功备用优化原问题简化为少量的低维区域优化子问题,具有较高的容错性和计算效率,可用于较大规模系统的发电机无功备用评估和优化。
[Abstract]:Reactive power reserve of generator is of great significance to voltage stability and voltage control of power system. This definition synthetically measures the value of regional generator reactive power reserve to static voltage stability and quasi-steady voltage control and the supply of reactive power reserve. The characteristics and selection of control variables are analyzed. A quadratic programming model for optimizing regional reactive power reserve and regional voltage level is established. In this paper, a successive partition optimization algorithm is proposed. The rationality of reactive power reserve definition and control variable selection is verified by a 3-node system example. The correctness and feasibility of the optimization method are verified by a IEEE 118 system example. The optimization scheme significantly improves the regional reactive power reserve and voltage stability margin, and improves the voltage level. By using the regional reactive power reserve optimization method, the high-dimensional reactive power reserve optimization problem is simplified to a small number of low-dimensional area optimization sub-problems. It can be used in the reactive power reserve evaluation and optimization of large scale systems.
【作者单位】：电力传输与功率变换控制教育部重点实验室(上海交通大学);中国电力科学研究院;爱荷华州立大学;
【基金】：国家电网公司大电网重大专项资助项目(SGCC-MPLG018-2012) 上海市优秀学术带头人计划资助项目(12XD1402900)~~
【分类号】：TM31

【参考文献】