同塔四回交流输电线路零序参数的解耦测量

提出了一种简易、准确地测量同塔四回交流输电线路零序参数的方法。将四回线路以两两组合的方式,组成四组两相系统;通过对两相系统的正序和零序开路阻抗和短路阻抗进行测量,分别计算各组合下的分布阻抗和分布导纳,进而精确地计算出各回线路之间的零序耦合电感和耦合电容,以及线路电阻、零序自电感和自电容。

Decoupling Measurement of Zero Sequence Parameters for Four-Circuit AC Transmission Lines on Same Tower

This paper proposes a simple but precise method to measure the zero sequence parameters among four lines on the same tower. The 4 cases of two phase systems using the four lines on the same tower are assembled, then the open circuit and short circuit impedances of positive and zero sequences of these two phase systems are measured. Based on which,the equivalent distributed impedance and admittance for each case are estimated. Finally, the mutual inductance and coupling capacitance, as well as self parameters of zero sequence can be calculated.