基于SSSC装置的系统可用输电能力研究  

Available Transfer Capability of Power Network Considering the Static Synchronous Series Compensator

作　　者：方婷婷[1] 李国庆[1] 韩芳[1] 邢晓哲[1] 

机构地区：[1]东北电力大学电气工程学院,吉林吉林132012

出　　处：《现代电力》2011年第2期17-22,共6页Modern Electric Power

摘　　要：可用输电能力(ATC)是衡量互联电网安全性与稳定性的重要指标,而灵活交流输电技术(FACTS)是提高系统可用输电能力的有效途径。以提高可用输电能力为目的,将静止同步串联补偿器(SSSC)引入互联电力系统。首先利用功率注入法,建立SSSC的稳态数学模型,然后基于最优潮流法,将SSSC的功率注入模型加入潮流方程,建立了计及SSSC的可用输电能力计算模型,并采用原对偶内点法对其进行求解。为了确定装置的安装位置,利用特征结构分析法,根据最小模特征值对控制变量的灵敏度系数来选择最有利于提高输电能力的SSSC安装位置。利用IEEE-30节点系统进行仿真计算,结果显示安装SSSC后互联系统间的传输容量得到提高,稳定裕度也得到提升,合理地配置SSSC可以有效提高系统的可用输电能力。Available transfer capacity（ATC） is the key index to measure the security and stability of the interconnected power systems.The flexible AC transmission system（FACTS） is an effective means to improve the available transfer capacity.In order to improve ATC,static synchronous series compensator（SSSC） is stalled in the system.By using of the power injection method,the mathematical model of SSSC is established.Then the power injection model of SSSC is added in power flow equations based on optimal power flow method,and calculation model of ATC with SSSC is built,which is solved by primal-dual interior point method.The most suitable installation location is determined according to the sensitivity coefficients of the minimum modulus eigenvalue to control variables by using of eigenstructure analysis approach.Taking the IEEE-30 bus system as example,the simulation results show that the transmission capacity and the stability margin are improved after the installation of SSSC,which indicates that suitable allocation of SSSC can improve the system available transfer capability effectively.

关 键 词：可用输电能力 柔性交流输电系统 静止同步串联补偿器 特征结构分析法 原对偶内点法 

分 类 号：TM744[电气工程—电力系统及自动化]