CAJ | 학술논문

简单介绍了传统的突变量距离保护原理,指出了其存在的不足,并在此基础上提出了新型突变量距离保护算法。新算法采用更为精确的分布参数模型计算补偿电压的突变量,从原理上解决了非周期分量对于突变量距离保护的影响,提高了区外故障时保护的安全性。详细分析了非周期分量的频谱特性,并验证了新算法对于非周期分量的适应性。EMTP仿真验证了所提出算法的正确性和实用性。
간단개소료전통적돌변량거리보호원리,지출료기존재적불족,병재차기출상제출료신형돌변량거리보호산법。신산법채용경위정학적분포삼수모형계산보상전압적돌변량,종원리상해결료비주기분량대우돌변량거리보호적영향,제고료구외고장시보호적안전성。상세분석료비주기분량적빈보특성,병험증료신산법대우비주기분량적괄응성。EMTP방진험증료소제출산법적정학성화실용성。
First,the principle of traditional industrial frequency variation distance protection is introduced and its deficiencies are pointed out.Based on the previous analysis,a new scheme of industrial frequency variation distance protection is put forward.A more accurate distributed parameter model is used in new algorithm to calculate the fault component of compensation voltage.Comparing with traditional algorithm,it makes the new algorithm less influenced by system source impedance and load,so that it also greatly improves the protection sensitivity.The spectral characteristics of the aperiodic components are analyzed in detail,and adaptation of the new algorithm to aperiodic components is proved as well.Simulation results with EMTP verify its validity and utility.