福建工程学院学报
福建工程學院學報
복건공정학원학보
JOURNAL OF FUJIAN UNIVERSITY OF TECHNOLOGY
2009年
3期
268-270
,共3页
短路电流%短路电压%计算方法
短路電流%短路電壓%計算方法
단로전류%단로전압%계산방법
short-circuit current%short-circuit voltage%calculating method
通过分析有名值法的计算过程,推导出一种近似计算10/0.4 kV低压侧三相短路电流的计算方法,即:在10/0.4 kV配变电所工程设计时,若高压侧部分相关资料不易获取,可利用二次侧额定电流与变压器短路电压即可计算出低压侧的三相短路电流.通过实例校验,结果表明,该近似算法可以用来校验相关导体和保护设备的合理选择.
通過分析有名值法的計算過程,推導齣一種近似計算10/0.4 kV低壓側三相短路電流的計算方法,即:在10/0.4 kV配變電所工程設計時,若高壓側部分相關資料不易穫取,可利用二次側額定電流與變壓器短路電壓即可計算齣低壓側的三相短路電流.通過實例校驗,結果錶明,該近似算法可以用來校驗相關導體和保護設備的閤理選擇.
통과분석유명치법적계산과정,추도출일충근사계산10/0.4 kV저압측삼상단로전류적계산방법,즉:재10/0.4 kV배변전소공정설계시,약고압측부분상관자료불역획취,가이용이차측액정전류여변압기단로전압즉가계산출저압측적삼상단로전류.통과실례교험,결과표명,해근사산법가이용래교험상관도체화보호설비적합리선택.
In designing 10/0.4 kV distribution substation, it is essential to acquire the working para-meters at the high-voltage side of the transformer. An approximate calculation method for three-phase short-circuit current at the low-voltage side of 10 kV transformer was proposed by analyzing the calculation process of Ohm's method. The rated current at the secondary side and the short-circuit voltage of the transformer were used to calculate the three-phase short-circuit current. The results show that the approximation calculation method can be used to check the reasonable choice of the as-sociated conductors and protective devices
