The invention discloses a resistance-capacitance matching method and device for an overvoltage absorption system of an auxiliary winding of a transformer. Model building is carried out in matlab/Simulink software, an auxiliary loop is simulated, and the overvoltage absorption system is matched. Through a program, several groups of'mother combinations' of parameters of the resistance-capacitance absorption device are given in advance, and after a model is imported, auxiliary winding overvoltage simulation is carried out. And after an obtained overvoltage waveform is obtained, generating a sub-combination with a relatively low overvoltage level, and importing the sub-combination into the model again to carry out auxiliary winding overvoltage simulation. And continuously circulating until the optimal parameters of the overvoltage resistance-capacitance absorption device are found. On the premise that a mathematical model of an overvoltage source of a traction transformer is not needed, resistance-capacitance matching of the resistance-capacitance absorption device is achieved, and the problem that equipment is damaged due to overvoltage of an auxiliary power supply loop is solved.
本发明公开了一种变压器辅助绕组过电压吸收系统阻容匹配方法、装置,在matlab/Simulink软件中进行模型搭建,仿真辅助回路并匹配过电压吸收系统。通过程序,预先给出阻容吸收装置参数的几组“母组合”,导入模型后进行辅助绕组过电压仿真。获取得到的过电压波形后生成过电压水平较低的“子组合”,再次导入模型进行辅助绕组过电压仿真。不断循环,直到找到最优的过电压阻容吸收装置参数。本发明在无需牵引变压器过电压源头数学模型的前提下,实现了阻容吸收装置的阻容匹配,解决了辅助供电回路的过电压导致设备损坏的问题。
Resistance-capacitance matching method and device for overvoltage absorption system of auxiliary winding of transformer
变压器辅助绕组过电压吸收系统阻容匹配方法、装置
2022-04-12
Patent
Electronic Resource
Chinese
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