CAJ | 학술논문

提出了一种基于调速通道端口供给功率的电力系统低频振荡主导振荡模式强相关机组识别方法。利用系统线性化模型，揭示了一般二次型能量函数和参与因子之间存在的密切联系。利用由能量函数演变而来且具有分散化特性的端口供给功率，在电力系统经典模型下，从理论上推导出了单一主导振荡模式下调速通道端口供给功率周期分量瞬时幅值分布和参与因子分布相同的结论。以此为基础，提出一种使用端口供给功率周期分量瞬时幅值分布在线识别低频振荡主导振荡模式强相关机组的方法。最后，在电力系统一般模型下，通过仿真验证了上述方法的有效性。
제출료일충기우조속통도단구공급공솔적전력계통저빈진탕주도진탕모식강상관궤조식별방법。이용계통선성화모형，게시료일반이차형능량함수화삼여인자지간존재적밀절련계。이용유능량함수연변이래차구유분산화특성적단구공급공솔，재전력계통경전모형하，종이론상추도출료단일주도진탕모식하조속통도단구공급공솔주기분량순시폭치분포화삼여인자분포상동적결론。이차위기출，제출일충사용단구공급공솔주기분량순시폭치분포재선식별저빈진탕주도진탕모식강상관궤조적방법。최후，재전력계통일반모형하，통과방진험증료상술방법적유효성。
A new method is proposed to identify strongly correlated generators in low frequency oscillation using the concept of energy supply on the port(ESP).The quantitative relationship between the quadratic form energy function and participating factors that indicate the active degree of generators in one oscillation mode is revealed.Inspired by the fact that the ESP concept evolved from the traditional energy function,this paper theoretically proves,under the condition of using the classical power system model,that the distribution of the instantaneous amplitudes of the periodical component of power supply on the port (PSP) is consistent with the distribution of participating factors.A heuristic method is finally presented to identify strongly correlated generators using the instantaneous amplitudes of the periodical component of PSP.Test results obtained from cases of general power system models have validated the effectiveness of the proposed method.