CAJ | 학술논문

针对传统的主动频率偏移孤岛检测方法的检测盲区问题，提出了一种新的光伏发电并网逆变器主动式孤岛检测方法，称为低频正弦相位扰动法。论述了该方法的孤岛检测原理，详细分析了该方法的参数与功率因数和电流谐波之间的关系，以及本地负载的品质因数对检测效果的影响。总结了使用该方法时的孤岛检测判断规则。仿真和实验结果验证了所述方法的有效性。
침대전통적주동빈솔편이고도검측방법적검측맹구문제，제출료일충신적광복발전병망역변기주동식고도검측방법，칭위저빈정현상위우동법。논술료해방법적고도검측원리，상세분석료해방법적삼수여공솔인수화전류해파지간적관계，이급본지부재적품질인수대검측효과적영향。총결료사용해방법시적고도검측판단규칙。방진화실험결과험증료소술방법적유효성。
To overcome the non-detection zones of traditional active frequency drift,a novel method of active islanding detection is proposed,called the active low-frequency drift method.The islanding detection principle of the method is discussed,and the relationship between parameters and the power factor and harmonic current is analyzed in detail,as is the impact of quality factor of the local load on detection effect.The j udgment rule of islanding detection in this method is summarized.Simulation and experimental results have proved the effectiveness of the proposed method.