电力系统保护与控制
電力繫統保護與控製
전력계통보호여공제
Power System Protection and Control
2015年
18期
18-22
,共5页
项丽%鲍颜红%耿天翔%徐伟%摆世彬%杨君军
項麗%鮑顏紅%耿天翔%徐偉%襬世彬%楊君軍
항려%포안홍%경천상%서위%파세빈%양군군
低频振荡%广域信息%电压控制%参与因子%振荡模式
低頻振盪%廣域信息%電壓控製%參與因子%振盪模式
저빈진탕%엄역신식%전압공제%삼여인자%진탕모식
low frequency oscillation%wide-area information%voltage control%participation factor%oscillation mode
为了在线抑制区间低频振荡,提出了一种基于广域信息的发电机电压控制方法.在发电机机端电压调整对系统振荡模式阻尼影响机理基础上,分析了电压控制对局部振荡模式和区域振荡模式的影响.基于发电机主导振荡模式下参与因子计算进行控制点选取;通过参与振荡的发电机分群计算两群机组振荡相角的均值,判别相角均值大的机群为领前群并提升领前群机组的电压;基于机组的调度区域属性区分局部振荡模式和区域振荡模式.南方电网算例分析结果表明,该方法能有效抑制低频振荡,证明了方法的正确性和有效性.
為瞭在線抑製區間低頻振盪,提齣瞭一種基于廣域信息的髮電機電壓控製方法.在髮電機機耑電壓調整對繫統振盪模式阻尼影響機理基礎上,分析瞭電壓控製對跼部振盪模式和區域振盪模式的影響.基于髮電機主導振盪模式下參與因子計算進行控製點選取;通過參與振盪的髮電機分群計算兩群機組振盪相角的均值,判彆相角均值大的機群為領前群併提升領前群機組的電壓;基于機組的調度區域屬性區分跼部振盪模式和區域振盪模式.南方電網算例分析結果錶明,該方法能有效抑製低頻振盪,證明瞭方法的正確性和有效性.
위료재선억제구간저빈진탕,제출료일충기우엄역신식적발전궤전압공제방법.재발전궤궤단전압조정대계통진탕모식조니영향궤리기출상,분석료전압공제대국부진탕모식화구역진탕모식적영향.기우발전궤주도진탕모식하삼여인자계산진행공제점선취;통과삼여진탕적발전궤분군계산량군궤조진탕상각적균치,판별상각균치대적궤군위령전군병제승령전군궤조적전압;기우궤조적조도구역속성구분국부진탕모식화구역진탕모식.남방전망산례분석결과표명,해방법능유효억제저빈진탕,증명료방법적정학성화유효성.
The method of generator voltage control based on wide-area information is proposed for on-line damping low frequency oscillations. Based on the mechanism for the effect of generator voltage control on oscillation damping in power system, the effects of local and inter-area oscillation modes on voltage control are analyzed. The methods of damping low frequency oscillations, which include the selection of control points based on participation factors of the generator dominant mode, the calculation of the generators mean phase angle through separating the oscillation generators into two parts, to define the larger mean phase angle of units as advance cluster and to raise the advance cluster voltage, and the identification of local and inter-area oscillation modes based on the generator dispatching area attribute, are proved effectively and correctly by the results of China Southern power grid.