考虑负荷柔性及网架调整的电–气联合调度模型  

Coordinated Dispatch Model for Integrated Electricity and Natural Gas Systems Considering Load Flexibilities and Network Topology Optimization

作　　者：赵霞[1] 冯欣欣 戴蓉 王骆 ZHAO Xia;FENG Xinxin;DAI Rong;WANG Luo(State Key Laboratory of Power Transmission Equipment&System Security and New Technology(Chongqing University),Shapingba District,Chongqing 400044,China)

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆市沙坪坝区400044

出　　处：《中国电机工程学报》2021年第20期6856-6868,共13页Proceedings of the CSEE

摘　　要：针对现有电–气联合调度方法对负荷柔性利用不充分、未考虑网架结构优化的局限,该文提出一种综合考虑"源侧"机组组合、"网侧"网架结构调整与"荷侧"电/气柔性负荷可削减/转移/平移/替代特性的"源–网–荷"协同的电–气联合系统日前调度模型,以充分释放电–气联合系统中网架结构的优化空间和柔性负荷的调节能力。利用"IEEE-39系统(10)20节点天然气系统"和"IEEE-118系统(10)40节点天然气系统"两个电–气联合系统算例,验证所提协同调度模型的有效性。仿真结果表明,在电–气联合运行中考虑柔性负荷的调节能力和网架结构调整,可以有效促进风电消纳、降低联合系统的运行成本。Load flexibilities were not thoroughly addressed and network topology optimization was neglected in the previous coordinated dispatch methods for integrated electricity and natural gas systems(IEGS).To overcome these limitations,a source-grid-load coordinated day-ahead dispatch model for IEGS was proposed in this paper to release the network topology optimization space and regulation potentials of flexible loads.The proposed model optimizes the unit commitment at the source side,the network topology at the gird side,and load flexibilities including curtailment,transfer,translation,and substitution at the load side simultaneously.Two IEGS sample systems,which were composed of the IEEE 39-bus system and the 20-node gas network,and of the IEEE 118-bus system and the 40-node gas network,were applied to verify the effectiveness of the proposed coordinated dispatch model.Simulation results show that the wind power accommodation is enhanced and the overall operation cost is reduced by incorporating the network topology optimization and load flexibilities into the dispatch model of IEGS.

关 键 词：电–气联合系统 日前调度 网架优化 柔性负荷 “源–网–荷”协同 

分 类 号：TM73[电气工程—电力系统及自动化]