CAJ | 학술논문

首先研究了附加调差对系统阻尼的影响，即将附加调差引入菲利蒲–海佛隆模型，推导出附加调差提供的阻尼转矩系数增量随附加调差系数变化的曲线是一条二次抛物线，而且这条抛物线的开口方向和位置与励磁参数、发电机参数、运行状况及系统参数有关。然后分析了附加调差对发电机频率响应特性的影响。仿真计算和现场试验结果表明：在0.1-2 Hz的低频振荡频段，较大的附加调差系数对发电机频率响应特性的影响明显，因此配置电力系统稳定器时计入附加调差的影响是很必要的。
수선연구료부가조차대계통조니적영향，즉장부가조차인입비리포–해불륭모형，추도출부가조차제공적조니전구계수증량수부가조차계수변화적곡선시일조이차포물선，이차저조포물선적개구방향화위치여려자삼수、발전궤삼수、운행상황급계통삼수유관。연후분석료부가조차대발전궤빈솔향응특성적영향。방진계산화현장시험결과표명：재0.1-2 Hz적저빈진탕빈단，교대적부가조차계수대발전궤빈솔향응특성적영향명현，인차배치전력계통은정기시계입부가조차적영향시흔필요적。
At first the influence of reactive current compensation （RCC） on power system damping is researched, namely leading RCC into Phillips-Heffron model and it is derived that the curve of increment of damping torque coefficient offered by RCC varying with RCC coefficient Xc is a second-degree parabola, and the opening direction of the parabola and its position relate to excitation parameters, generator parameters, operation condition of power system and system parameters. Then the influence of RCC on frequency response of generator is analyzed. Simulation results and on-site testing results show that in the frequency band of low-frequency oscillation from 0.1 Hz to 2 Hz, larger RCC coefficient evidently influences on frequency response characteristic of generator, therefore it is very necessary to take the influence of RCC into account during the setting of power system stabilizer （PSS）.