含SVC电力系统的IPEBS法暂态稳定分析  

IPEBS Method for Transient Stability Analysis of Power System with SVC

作　　者：胡继磊 刘雪粲 江宁强[3] 葛晨阳 邱殿成 HU Jilei;LIU Xuecan;JIANG Ningqiang;GE Chenyang;QIU Diancheng(State Grid Lianyungang Power Supply Company of Jiangsu Electric Power Co.,Ltd.,Lianyungang 222100;State Grid Xuzhou Power Supply Company of Jiangsu Electric Power Co.,Ltd.,Xuzhou 221000;School of Automation,Nanjing University of Science and Technology,Nanjing 210094)

机构地区：[1]国网江苏省电力有限公司连云港供电分公司,连云港222100 [2]国网江苏省电力有限公司徐州供电分公司,徐州221000 [3]南京理工大学自动化学院,南京210094

出　　处：《电气工程学报》2023年第3期277-284,共8页Journal of Electrical Engineering

基　　金：国家自然科学基金资助项目(51577092)。

摘　　要：研究了含静止无功补偿器(Static var compensator,SVC)的多机电力系统的暂态稳定性。首先建立了含SVC的多机电力系统模型,并基于等效负荷概念,构造出含SVC的电力系统的能量函数,验证了能量函数在故障后单调下降的特性。将SVC势能用并网电压和功率表示,克服了SVC模型复杂给构建能量函数带来的困难。采用提出的能量函数,在修改的3机9节点系统和10机39节点系统中验证了迭代势能界面法(Iterative potential energy boundary surface,IPEBS)的有效性。计算结果表明,与时域仿真法相比较,所得故障临界清除时间(Critical clearing time,CCT)的误差较小。The transient stability of multi-machine power system with static var compensator(SVC)is proposed.First,the multi-machine power system model with SVC is established.Then,based on the concept of equivalent load,the energy function of the power system with SVC is proposed.And it is verified for the monotonic decreasing property of the energy function after fault-clearing.The potential energy due to SVC is expressed by the voltage of the grid-connection point and the power injected into it,which overcomes the difficulty brought by the complicate structure of SVC.Using the proposed energy function,the transient stability is analyzed by the PEBS method.The iterative potential energy boundary surface method(IPEBS)is validated on a modified 3-machine 9-nodes system and 10-machine 39-nodes system.Compared with the time domain simulation,the calculation results show that the error of the critical clearing time(CCT)is down.

关 键 词：静止无功补偿器 暂态稳定 能量函数 迭代势能界面法 

分 类 号：TM712[电气工程—电力系统及自动化]