摘要
针对电力系统中电容分压型电子式电压互感器(ECVT)的积分电路输入信号相位和幅值受到传感电路频率特性的影响,可采用无源与有源积分电路复合结构的方法。利用无源、有源积分电路分别处理高频段和低频段信号,并与复合电路仿真对比。结果表明,对有源、无源积分电路参数合理设计后所得的复合架构能够完成频率交叉点幅值与相角的配合,能够改善互感器输出性能。
For amplitude and phase of the integration circuit in electronic voltage transformer based on capacitance division susceptible to frequency conversion in power system, using a program which combined passive integrator circuit and active integrator circuit together in the integration circuit, passive integrator circuit performs high-band signal processing and active integrator circuit to com- plete the low-band signal analysis, then compared with the simulation results of composite circuit. Ex- periments show that, through rational design parameters of the active and passive integrator circuit, it is possible to realize the coordination of the intersection of frequency magnitude and phase angle, and waveform measurement error can be reduced.
出处
《江西科学》
2017年第2期266-269,278,共5页
Jiangxi Science
基金
国家自然科学基金项目(KKGD201503106)
云南电网有限责任公司电力科学研究院项目(2015-000303JL00018)
