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真空断路器循迹控制

DOI: 10.13334/j.0258-8013.pcsee.2014.33.023, PP. 5983-5990

Keywords: 选相,循迹控制,合闸时间分散性,模糊,电磁机构

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Abstract:

采用带自调整函数的模糊算法,能够使断路器永磁机构按给定曲线动作,保证断路器的合闸时间稳定,从而提高选相操作的精度。通过该算法可实时纠正断路器永磁机构的运动位移偏差,在电容电压、环境温度等外界因素发生变化时,使机构仍按给定曲线动作。通过开关特性测试仪和DSP2812硬件控制系统,得到标准位移曲线及控制算法中的基本参量值,并在Matlab中建立了考虑续流过程的真空断路器闭环控制系统,给出了电容电压变化的仿真结果,验证了上述控制方法的可行性。此外,针对单相配永磁机构真空断路器,进行大量的合闸实验。实验结果表明:在上述外界因素变化时,该控制方法能将断路器合闸时间稳定在±0.5ms之内。

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