基于改进同步时间法梯级水电站群间协调控制策略的研究.pdfVIP

学兔兔 第51卷 第25期 电测与仪表 V01．51 N0．10 2014年 5月25日 Electrical Measurement Instrumentation May．10。2014 基于改进同步时间法梯级水电站 群间协调控制策略的研究米 袁旭峰，龙燕，许伟杰，熊炜，邹晓松 (贵9。I．1大学电气工程学院，贵阳550025) 摘要：利用GPS对时功能，提出了一种改进同步时间法来保证各个调频电厂的时间同步，避免频差积分差异， 为调频机组分散协调控制奠定了基础；以省级电网中的梯级水电站群为研究对象，提出了一种基于改进同步时 间法的梯级水电站群AGC协调控制策略，实现了各梯级水电站所接入的地区电网间联络线负荷功率频率偏差 ACE的控制，保证了区域电网频率恒定。以3机9节点系统为例，利用PSCAD软件构建了三区域等值模型及 梯级水电站协调控制策略，验证了所提算法的可行性及有效性。 关键词：梯级水电站；AGC控制；节能调度；改进同步时间法；协调控制策略 中图分类号：TM622 文献标识码：A 文章编号：1001—1390(2014)10—0051—07 Study on Coordinate Control Scheme Based on Improved Synchronous Time Method for Cascade Hydropower Plants YUAN Xu—feng，LONG Yan，XU Wei—jie，XIONG Wei，ZOU Xiao—song (College of Electrical Engineering，Guizhou University，Guiyang 550025，China) Abstract：Using the function of GPS time transfer，the paper put forwards an improved synchronous time method to ensure the clock of each power plant participating in frequency regulation synchronized．It avoids the integral difference of frequency offset，therefore can realize coordinated control for decentralized frequency regulation．Taking cascade hy— dropower plants in a provincial power grid as the study case，this paper puts forward a coordinated AGC control scheme based on improved synchronous time for cascade hydropower plant group，which realizes ACE control of load power frequency deviation on the tie——line of each power plant connected to the grid and keeps regional power grid fre-· quency constant．Finally，by building a three—region equivalent model and the control scheme for cascade hydropower plants with PSCAD／EMTDC，the proposed method is tested on a 3一geneator 9一bus system to ver