Steady State Model for Measuring Amplitude and Phase Errors of Current Transformers
In order to solve the problem of inaccurate measurement of current transformer(CT)during the expansion of high-voltage distribution network,a steady-state mathematical model of CT amplitude and phase errors is proposed.The CT steady state model is related to the basic magnetism of the core,and the CT amplitude and phase errors can be predicted according to the permeability and power loss of the core.Achieving low CT error,high permeability and low loss are ideal magnetic characteristics of iron core,and it is also important to maintain low load impedance.Therefore,the core permeability,core loss,load impedance and CT error function are related to,and the CT error is simulated as a function of these three parameters.Finally,the correctness of the steady state mathematical model of CT is verified through the comparison and analysis of experimental and model prediction data.
current transformersteady state mathematical modelphase errorcompensation
NETL
NSTL
万方数据
