发输电经济及电网安全的综合优化建模方法竺炜.pdfVIP

第 35 卷 第 17 期 中 国 电 机 工 程 学 报 Vol.35 No.17 Sep. 5, 2015 2015 年 9 月 5 日 Proceedings of the CSEE ©2015 Chin.Soc.for Elec.Eng. 4335 DOI ：10.13334/j.0258-8013.pcsee.2015.17.007 文章编号：0258-8013 (2015) 17-4335-10 中图分类号：TM 732 发输电经济及电网安全的综合优化建模方法 竺炜，李娟，蒋银华，王琴英，于文海 (长沙理工大学电气与信息工程学院，湖南省 长沙市 410114) Integrated Optimization Model for Generation Transmission Economic and Grid Security ZHU Wei, LI Juan, JIANG Yinhua, WANG Qinying, YU Wenhai (College of Electrical Information Engineering, Changsha University of Science Technology, Changsha 410114, Hunan Province, China) ABSTRACT: Due to the lack of full quantified and monotonic 0 引言 grid security index, the grid security as inequality constraints 电力系统好的运行方式应该是发、输电经济性 cannot be optimized simultaneously in traditional economic 和电网安全性综合优化的结果，前者是降低发电成 power generation optimization models. The study found that the grid mapping elasticity potential energy not only can be 本和输电网损，后者是提高电网的功角稳定和电压 used a grid security quantitative index, its change trend is also 稳定的裕度。在主网中，一般节点都会根据负荷特 consistent with the grid power loss when R/X of lines are less 性，配有性能良好的无功补偿装置，运行时可自动 difference, and tends to be minimal when the lines load rate is 或人工调节无功补偿。所以，在做发电计划时，电 balanced. Moreover, taken the grid mapping elasticity potential 网安全性主要考虑的是静态功角的稳定裕度。 energy into consideration of the objective function of 此前，由于电网安全性的定量及全程单调指标 optimization model, it can achieve integrated optimization of 问题未能很好地解决，在优化模型中一般将安全性 generation economy, transmission economy and grid security. 作为不等式约束边界条件[1-3]，优化目标中一般只包