CAJ | 학술논문

目前的低频、低压减载装置相互独立，当用于保持解列后孤岛的频率、电压安全控制时，由于孤岛内频率和电压的动态过程相互耦合，仅通过初始有功功率缺额不能准确判断孤岛频率变化趋势，通过典型算例的仿真，分析了初始有功缺额、初始无功缺额、负荷特性等对孤岛频率动态过程的影响，指出负荷特性和初始无功缺额对于孤岛电压状况和孤岛频率动态的变化有强烈的影响，在研究解列后存在大量有功功率缺额的孤岛频率动态时需要充分考虑电压变化对其的作用，相关工作为解列后孤岛频率电压联合紧急控制的研究提供了参考。
목전적저빈、저압감재장치상호독립，당용우보지해렬후고도적빈솔、전압안전공제시，유우고도내빈솔화전압적동태과정상호우합，부통과초시유공공솔결액불능준학판단고도빈솔변화추세，통과전형산례적방진，분석료초시유공결액、초시무공결액、부하특성등대고도빈솔동태과정적영향，지출부하특성화초시무공결액대우고도전압상황화고도빈솔동태적변화유강렬적영향，재연구해렬후존재대량유공공솔결액적고도빈솔동태시수요충분고필전압변화대기적작용，상관공작위해렬후고도빈솔전압연합긴급공제적연구제공료삼고。
At present the under-frequency load shedding device and the under-voltage load shedding device are configured in power grid independently. When these devices are applied in the secure control of frequency and voltage in an islanded power grid, due to the intercoupling of dynamic processes of voltage and frequency it is impossible to accurately judge the frequency variation of the islanded grid only by initial active power vacancy. Through the simulation of typical example, the impacts of initial active power vacancy, initial reactive power vacancy, load characteristics, etc. on dynamic process of island frequency are analyzed, and it is pointed out that the load characteristics and initial reactive power vacancy intensively impact on both island voltage condition and dynamic variation of island frequency. During the research on post-splitting dynamic frequency in the island with a lot of active power vacancy it is necessary to fully consider the impact of voltage variation on dynamic frequency. Conclusion of this research is available for reference to joint emergency control of island frequency and voltage after the splitting of power grid.