电容式电压互感器1/2次分频谐波的分析

AN ANALYSIS OF 1/2 ORDER FRACTIONAL-FREQUENCY HARMONICS IN A CVT

电容式电压互感器（ＣＶＴ）目前正常运行在大电流接地系统中，但在特定的操作下，可能运行于不接地系统。随着ＣＶＴ使用量的增大，使这种可能性增大。文中分析ＣＶＴ运行于不接地系统方式下，产生１／２次分频谐波谐振的条件，并用描述函数分析谐振域的可能范围以及对ＣＶＴ性能的影响。

Now the capacity-voltage transformer (CVT) is normally operating in a system earthed with large current, under a specific operation, however, it may run in a system without earthing. In accordance with the increasing application of CVT, such possibility increases also, and therefore,the conditions under which the 1/2 order fractional frequency harmonic occurs are analyzed, and the possible area of analyzing the harmonics described by mathematic function and its influence on the characteristics of a CVT are also discussed.