考虑抽蓄电站运行特性的电网经济调度方法  

A power grid economic dispatch method considering the operation characteristics of pump storage power station

作　　者：袁泉 周鑫 张蔷[1] 周毓敏[1] 黄红伟 李展 YUAN Quan;ZHOU Xin;ZHANG Qiang;ZHOU Yumin;HUANG Hongwei;LI Zhan(China Southern Power Grid Dispatching Control Center,Guangzhou,510663,China;Beijing Qingda Keyue Co.,Ltd.,Beijing,100084,China)

机构地区：[1]中国南方电网电力调度控制中心,广东广州510663 [2]北京清大科越股份有限公司,北京100084

出　　处：《电力大数据》2020年第9期58-65,共8页Power Systems and Big Data

摘　　要：为提升抽蓄电站在电网运行中的效益,最大化其在电力调峰、降低网损等方面所能发挥的作用,对抽蓄电站运行特性进行了研究,提出了一种考虑抽蓄电站的电网经济调度方法;通过对抽蓄电站运行特性的研究,从出力能力、水位限制等五个方面构建了抽蓄电站的运行约束条件。综合考虑抽蓄电站运行期间自身效益和电网运行效益,提出了一项抽蓄电站运行效益综合评价指标。在传统电网经济调度模型基础上,考虑抽蓄电站运行特性,构建了考虑抽蓄电站运行效益的电网经济调度模型。针对该模型的非线性特征,提出了基于局部线性化的求解方法。基于IEEE-30节点系统构造的算例表明,通过精细化考虑抽蓄电站运行效益,能够有效提升电网调峰能力,同时通过降低抽蓄电站损耗,降低系统整体购电费用,提高运行效益。In order to improve the efficiency of pump storage power station in power network operation and maximize its role in power peak adjustment and network loss reduction,the operation characteristics of pump storage power station are studied and an economic dispatching method of power network considering pump storage power station is proposed.Based on the study of the operation characteristics of the pump storage power station,the operation constraints of the pump storage power station are constructed from five aspects,including output capacity,water level limitation and so on.A comprehensive benefit evaluation index of pump storage power station is put forward by considering its own benefit and grid operation benefit.Based on the traditional power network economic dispatch model and considering the operation characteristics of pump storage power station,a power network economic dispatch model with pump power station operation benefit in mind is constructed.Aiming at the nonlinear characteristics of the model,a solution method based on local linearization is proposed.The case study based on IEEE-30 buses system shows that the peak regulation capacity can be effectively improved by carefully considering the operation benefit of the pump storage power station,and the operation benefit can be improved by reducing the loss of the pump storage power station and reducing the overall power purchase cost of the system.

关 键 词：经济调度 抽蓄电站 运行特性 调峰能力 运行效益 

分 类 号：TM73[电气工程—电力系统及自动化]