考虑元件特性与物理约束的静态等值方法  

Static Equivalent Method Considering the Characteristics and Physical Constraints of Network Components

作　　者：张林[1] 廖龙飞[2] 余娟[2] 朱黎丽[3] 朱柳 颜伟[2] 赵霞[2] 

机构地区：[1]国家电网公司重庆市电力公司重庆渝中区400014 [2]重庆大学输配电装备及系统安全与新技术国家重点实验室重庆沙坪坝区400044 [3]重庆工程职业技术学院电气工程学院重庆沙坪坝区400037 [4]国家电网长沙供电公司长沙4100001

出　　处：《电子科技大学学报》2015年第5期712-718,共7页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(51477017);重庆市基础与前沿研究计划一般项目(cstc2014jcyj A90017);中央高校基本科研业务费(CDJZR13150008)

摘　　要：在难以获得外网实时同步信息,但又必须考虑外网对内网的影响时,采用基于边界处实时状态信息的非拓扑静态等值方法成为解决上述问题的有效途径。该文针对单端口互联电网提出考虑外网元件特性与参数物理约束的静态等值方法,外网对内网电压和功率的支撑作用通过外网中各元件的特性实现。因此,首先将外网主要元件特性尽可能全面地通过合理的等值参数保留在外网等值电路中,提出基于外网元件特性的单端口等值电路;然后,基于该等值电路和边界节点处的多时段实时状态信息建立量测方程,并在分析等值电路参数物理意义的基础上提出带约束的静态等值优化模型。在新英格兰39节点系统中验证了该方法所计算的等值参数符合实际物理意义,且能较大程度地提高静态安全分析精度。When the internal network is difficult to obtain the real-time synchronous information of the external network but has to consider its impacts, the non-topological static equivalent methods based on the real-time status information at the boundary bus become an effective way to solve the above problem. This paper presents a static equivalent method considering the characteristics of external network devices and the physical constraints on parameters for single-port interconnected power system. The voltage and power of internal network is supported by the external network with its devices. The characteristics of main devices in external network remain unchanged as much as possible in the external network equivalent circuit through reasonable equivalent parameters, and a single-port equivalent circuit based on the external network device characteristics is proposed. The measurement equations based on the equivalent circuit and the multi-period real-time status information at the boundary bus is established and the static equivalent optimization model with the constraints is presented by analyzing the physical meaning of the equivalent circuit parameters. The New England 39-bus system is used to verify the effectiveness of the presented method.

关 键 词：元件特性 物理约束 电力系统 静态等值 电压和功率支撑 

分 类 号：TM7[电气工程—电力系统及自动化]