CAJ | 학술논문

电容式电压互感器(capacitor voltage transformer, CVT)已广泛应用在电力系统中，但由于其结构中含有电容和非线性电感等，无法对谐波进行准确测量。综合考虑CVT制造参数和杂散电容等因素，建立CVT谐波阻抗模型并推导其完整的传递函数，并通过模型仿真结果与实测CVT谐波试验结果的对比，验证了模型的准确性；在此基础上仿真分析了CVT的关键参数对其谐波传递特性的影响。对CVT准确测量谐波和CVT设计、生产制造以及工艺优化提供一定的参考借鉴。
전용식전압호감기(capacitor voltage transformer, CVT)이엄범응용재전력계통중，단유우기결구중함유전용화비선성전감등，무법대해파진행준학측량。종합고필CVT제조삼수화잡산전용등인소，건립CVT해파조항모형병추도기완정적전체함수，병통과모형방진결과여실측CVT해파시험결과적대비，험증료모형적준학성；재차기출상방진분석료CVT적관건삼수대기해파전체특성적영향。대CVT준학측량해파화CVT설계、생산제조이급공예우화제공일정적삼고차감。
The capacitor voltage transformer (CVT) has been widely used in the power system; However, it is hard to measure correctly the system harmonic with CVT because of its structure containing capacitors and non-linear inductors. This article describes a harmonic impedance model of CVT and derives its complete transfer function, considering the CVT manufacturing parameters and stray capacitance and other factors. The accuracy of the model was verified by comparing the CVT model simulating results and measured results of harmonic, then the impact of key parameters of CVT on its harmonic transfer characteristics was analyzed by simulation. Also, certain reference function is provided for accurate measurement of CVT harmonics, CVT design, manufacturing and process optimization.