一般情形下,通过空间某截面的电流应包括传导电流与位移电流和运流电流,其和称全电流(total current)。即:传导电流Ic + 运流电流Iv + 位移电流Id = 全电流,其中:Ic指导体内自由电荷定向移动所形成的电流;Iv指导体外自由电荷定向移动所形成的电流;Id指变化的电场所等效的电流。如安培环路定理中的I就可以理解为全电流。
采用全电流定理,由磁场能量的计算推导出槽漏抗计算公式。
Based on full current theory, derive formula of slot leakage reactance from magnetic field energy calculation.
全面对比分析了全电流比例差动判据和故障分量电流比例差动判据的灵敏性和安全性。
The sensitivity and the security of the percentage differential criteria using phase current and superimposed phase current are studied comparatively.
发生发展性故障后,利用保护安装处的全电流减去求得的支路电流得到发展性故障后的故障分量电流。
After an evolved fault occurred, the fault superimposed components can be calculated through subtracting the solved load currents from the currents at the measuring point.
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