基于ECVT数字积分器的仿真及研究

The Simulation and Research Based on the Digital Integrator of the ECVT

针对电容分压型电子式电压互感器(ECVT)的积分器多数采用模拟积分器,存在着温度、湿度、外界磁场等干扰而使其精度降低的问题。文中采用基于Al-Alaoui数字积分器引进衰减系数J和K,设计出改进的Al-Alaoui数字积分器的方法。通过仿真对比各种积分算法的数字积分器,并对改进的Al-Alaoui数字积分器进行稳态和温度测试实验。结果表明,改进的Al-Alaoui数字积分器抗外界干扰能力强,具有较高的可靠性和精度,可达到0.02级标准。

For the integrator of capacitive voltage-divided electronic potential transformer（ ECVT）,the simulation integrator is used to reduce the precision of temperature,humidity,external magnetic field and so on. In this paper,an improved Al-Alaoui digital integrator is designed by introducing attenuation coefficient J and K based on Al-Alaoui Digital integrator. By simulating and comparing the digital integrator of various integral algorithms,the steady and temperature test of the improved Al-Alaoui digital integrator is carried out. The results show that the improved Al-Alaoui digital integrator has strong anti-interference ability,high reliability and accuracy,and can reach the level 0. 02 standard.