电力系统及其自动化学报
電力繫統及其自動化學報
전력계통급기자동화학보
PROCEEDINGS OF THE CHINESE SOCIETY OF UNIVERSITIES
2009年
6期
1-5
,共5页
吴杰康%詹厚剑%齐佳鑫%康海兵
吳傑康%詹厚劍%齊佳鑫%康海兵
오걸강%첨후검%제가흠%강해병
电压稳定性%静止同步补偿器%最小模特征值%特征结构分析法%柔性交流输电系统
電壓穩定性%靜止同步補償器%最小模特徵值%特徵結構分析法%柔性交流輸電繫統
전압은정성%정지동보보상기%최소모특정치%특정결구분석법%유성교류수전계통
voltage stability%static synchronous compensator(STATCOM)%minimum eigenvalue%eigenvalue structure analysis%flexible AC transmission systems(FACTS)
静止同步补偿器STATCOM是柔性交流输电系统FACTS家族中的重要成员,可有效改善系统电压调节特性,提高系统电压稳定裕度.文章基于特征结构分析法,将STATCOM的稳态模型加入潮流方程中,建立计及STATCOM的电压稳定计算模型.该方法以最小模特征值作为系统接近电压不稳定的量度,以电压灵敏度和参与因子为指标,判断全电网中最有可能发生电压不稳定的节点和区域,从而为STATCOM的配置提供依据.对WSCC-3机9节点系统仿真,验证了STATCOM对电压稳定的积极作用.
靜止同步補償器STATCOM是柔性交流輸電繫統FACTS傢族中的重要成員,可有效改善繫統電壓調節特性,提高繫統電壓穩定裕度.文章基于特徵結構分析法,將STATCOM的穩態模型加入潮流方程中,建立計及STATCOM的電壓穩定計算模型.該方法以最小模特徵值作為繫統接近電壓不穩定的量度,以電壓靈敏度和參與因子為指標,判斷全電網中最有可能髮生電壓不穩定的節點和區域,從而為STATCOM的配置提供依據.對WSCC-3機9節點繫統倣真,驗證瞭STATCOM對電壓穩定的積極作用.
정지동보보상기STATCOM시유성교류수전계통FACTS가족중적중요성원,가유효개선계통전압조절특성,제고계통전압은정유도.문장기우특정결구분석법,장STATCOM적은태모형가입조류방정중,건립계급STATCOM적전압은정계산모형.해방법이최소모특정치작위계통접근전압불은정적량도,이전압령민도화삼여인자위지표,판단전전망중최유가능발생전압불은정적절점화구역,종이위STATCOM적배치제공의거.대WSCC-3궤9절점계통방진,험증료STATCOM대전압은정적적겁작용.
As an important member of FACTS, STATCOM (static synchronous compensator) can improve the performance of voltage regulation and voltage stability margin of power grid. On the basis of eigenvalue structure analysis method, the steady state model of STATCOM is added into power flow equations and an voltage stability calculation model that considering STATCOM installation is built. Taking the minimum eigenvalue as a symbol of a weak system, by means of voltage sensitivity and participation factors, this method can find the most unstable node or region of the whole power system, which provides a basis for STATCOM installation.Simulation results of WSCC 3-machine 9-bus system prove that not only the proposed model and method are correct and effective, but STATCOM plays a positive role on voltage stability.
