CAJ | 학술논문

给出了达到无功越限后，可能出现极限诱导分岔的条件；提出了变量达到输出极限导致极限诱导分岔时，影响系统电压稳定与否的判据；给出了极限诱导分岔影响电压稳定的一种机理解释。极限诱导分岔反映了动态无功源在维持系统电压稳定性中的重要性，并研究了增加无功源对极限诱导分岔的影响。数字仿真结果进一步验证了文中所提出方法和机理解释的正确性。
급출료체도무공월한후，가능출현겁한유도분차적조건；제출료변량체도수출겁한도치겁한유도분차시，영향계통전압은정여부적판거；급출료겁한유도분차영향전압은정적일충궤리해석。겁한유도분차반영료동태무공원재유지계통전압은정성중적중요성，병연구료증가무공원대겁한유도분차적영향。수자방진결과진일보험증료문중소제출방법화궤리해석적정학성。
Limit induced bifurcation （LIB）, which occurs while reactive power output of generators exceeds the limit or output of dynamic reactive power sources is over-limited, is very dangerous to power system voltage stability. The conditions by which LIB may occurs is given while reactive power is over-limited; a criterion to judge whether voltage stability can be maintained is proposed while LIB occurs due to over-limited reactive power, and an explanation on the mechanism of how LIB influencing voltage stability is given. LIB reflects the importance of dynamic reactive power sources in maintaining system voltage stability, so the influence of increasing reactive power source on LIB is researched. The correctness of the proposed method and the given explanation on the mechanism of LIB are verified by results of digital simulation.