考虑灵活运行机组的随机机组组合模型  

Stochastic Unit Commitment Method with Flexible Generating Units

作　　者：丁晓莺[1,2] 刘林[1] 王锡凡[1] 王建学[1] 

机构地区：[1]西安交通大学电气工程学院,陕西省西安市710049 [2]电力设备电气绝缘国家重点实验室,陕西省西安市710049

出　　处：《电力系统自动化》2009年第18期23-27,共5页Automation of Electric Power Systems

基　　金：国家重点基础研究发展计划(973计划)资助项目(2004CB217905);西安交通大学校长基金(0400011211)~~

摘　　要：提出一种随机机组组合模型。为兼顾节能环保,该模型除考虑常规火电机组之外,还考虑了灵活运行机组和风电机组。灵活运行机组具有多种运行模式,将每种模式虚拟为一台单独的发电机,通过设置相应的参数和约束条件实现模式之间的转换,易于与传统机组组合模型相结合。在常规机组组合模型中加入投运风险约束,通过该约束不同的变形形式可以分别考虑负荷波动、发电机组故障和风电场输出功率波动等多种随机因素。2个简单系统的算例分析显示了所述模型在处理灵活运行机组以及考虑随机因素方面的有效性。4个不同规模的算例分析显示,模型的计算时间能够满足工程计算的需要,具有一定的实际应用前景。A stochastic unit commitment （SUC） method is presented, considering conventional thermal units, flexible generating units and wind turbines aimed at energy saving and environment protection. The flexible generating unit has various operation modes. Each operation mode is modeled as a pseudo unit and the switch between two modes is implemented by setting some constraints. Therefore they are easy to be combined with the conventional unit commitment（UC） method. The UC risk constraints are developed and combined into the model. The demand fluctuation, the unit force outage, even the stochastic characteristic of wind generation can be dealt with by different forms of UC risk constraints. Numerical simulations on two simple test systems show that the presented SUC method is effective to schedule flexible generating units and deal with their stochastic characteristics. The results of four test systems with different scales show that the calculation time of the method is acceptable and practical.

关 键 词：机组组合 灵活运行机组 风力发电 发电充裕度 机会规划 

分 类 号：TM73[电气工程—电力系统及自动化]