基于PCHS的电力系统振荡源定位方法  

Positioning Method for Oscillation Source of Power System Based on Port-controlled Hamiltonian System

作　　者：李颖[1] 李嘉龙[1] 王一[1] 代贤忠[2] 

机构地区：[1]广东电网电力调度控制中心,广东广州510600 [2]清华大学电机系电力系统国家重点实验室,北京100084

出　　处：《广东电力》2013年第10期51-57,共7页Guangdong Electric Power

基　　金：国家自然科学基金资助项目(51177079)

摘　　要：外部扰动可能引发电力系统的强迫振荡,控制设备参数不当也可能使得系统发生负阻尼振荡,对于这两类振荡问题,只要能够及时找到振荡源,即外部扰动或不当的控制参数,即可快速平息振荡。根据端口受控Hamilton系统(port-controlled Hamiltonian system,PCHS)理论,基于端口供给能量(energy supply on port,ESP)的概念提出一种振荡源定位方法,通过计算相应端口上的供给能量,可以快速确定外部扰动或不当的控制参数所在位置。不同于传统的小干扰分析方法,该定位方法完全基于量测进行,可在线实施,同时还具有本地化特点,可分散化地实施。IEEE-39节点系统上的仿真算例验证了该定位方法的有效性和可行性。External disturbance may cause forced oscillation of the power system while improper parameters of control equip- ment may result in negative damping oscillation. Aiming at above two problems, this paper considers that it is able to rapidly quell oscillation if it is possible to find oscillation sources in time. According to port-controlled Hamiltonian system theory, it proposes a kind of oscillation source positioning method based on energy supply on port which is to confirm positions of ex- ternal disturbance or improper controlled parameters by calculating supply energy on port. Being differ from traditional small disturbance analysis method, this positioning method is feasible to be implemented on line based on measuration and decentralization for reason of its characteristic of localization. Simulation diffset on IEEE-39 node system verifies effective- ness and feasibility of this positioning method.

关 键 词：振荡源定位 端口受控Hamilton系统 系统能量 低频振荡 

分 类 号：TM712[电气工程—电力系统及自动化]