CAJ | 학술논문

针对微电网中由于存在多种分布式电源导致其系统频率稳定控制方式比传统的配电网复杂的问题，研究快速求出微电网离网频率异常时系统内存在的有功功率缺额值的计算方法。提出了一种快捷的微电网有功功率缺额计算方法，并分析了该有功功率缺额算法对于微电网离网频率稳定控制的意义。算例分析结果表明，该方法可以指导频率稳定控制系统对孤立运行微电网内电力设备进行精确的有功功率调度，使系统频率快速恢复正常。且可以指导微电网能量管理系统进行频率稳定控制策略的仿真测试与验证。
침대미전망중유우존재다충분포식전원도치기계통빈솔은정공제방식비전통적배전망복잡적문제，연구쾌속구출미전망리망빈솔이상시계통내존재적유공공솔결액치적계산방법。제출료일충쾌첩적미전망유공공솔결액계산방법，병분석료해유공공솔결액산법대우미전망리망빈솔은정공제적의의。산례분석결과표명，해방법가이지도빈솔은정공제계통대고립운행미전망내전력설비진행정학적유공공솔조도，사계통빈솔쾌속회복정상。차가이지도미전망능량관리계통진행빈솔은정공제책략적방진측시여험증。
Based on the fact that the system frequency control method in micro grid is much difficult than the situation in traditional distribution power grid as the micro grid contains a variety of DERs, this paper researches on the control method to know how much the shortage gap of the active power storage in the abnormal frequency state during the off-grid operation of the micro grid system. A fast calculation method of the active power vacancy is proposed and the meaning of this method for the off-grid micro grid frequency stability is analyzed. Numerical example result shows that, this method for the active power vacancy can be used not only to guide the frequency stability control system adjusting the active power of the equipment in the off-grid micro grid accurately in order to maintain the system frequency within the range of conformity, but also to guide simulation verification of the control strategy about the frequency stability of the micro grid.