平抑机组出力波动的发电计划模型及其应用  

Generation Scheduling Model and Application with Fluctuation Reduction of Unit Output

作　　者：徐帆[1] 李利利[1] 陈之栩[2] 涂孟夫[1] 丁恰[1] 

机构地区：[1]国网电力科学研究院/南京南瑞集团公司,江苏省南京市210003 [2]华北电网有限公司,北京市100053

出　　处：《电力系统自动化》2012年第5期45-50,102,共7页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(51177019);国家电网公司科技项目"华北电网间歇式能源日前日内协调优化调度系统研究与开发"~~

摘　　要：在编制基于发电成本最小的发电计划时,机组出力曲线经常会出现来回波动的情况。针对这一问题,引入了机组出力变化惩罚因子,并根据不同容量机组的生产特性,分别建立了机组出力变化的线性惩罚模型和分段惩罚模型。采用某省级电力系统算例对所建立的模型进行测试。算例结果表明,模型能有效平抑大中型机组的出力波动,保证出力平稳;在一定程度上可以改善小型机组的出力特性,便于在实际中进行控制;满足电网安全约束,保证安全断面不越限。Generation unit power fluctuation frequently occurs in the generation scheduling model which aims at minimizing the generation costs.To solve this problem,the unit power fluctuation penalty factor is introduced.Based on the different characteristics of units of different capacities,a unit power fluctuation linear penalty model and a piecewise penalty model are developed.An actual provincial power system is used to examine the developed models.The results show that the models can reduce the fluctuation of large and medium-size units and make the output power smoother.The model can improve output characteristics of the small capacity units,making it easier to operate.The models also satisfy the limit values of network security constraints.

关 键 词：发电计划 出力波动 线性惩罚 分段惩罚 安全约束 

分 类 号：TM715[电气工程—电力系统及自动化]