Microcomputer protection device and signal filtering method of high-voltage motor
A microcomputer protection device, high voltage technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve the problems of malfunction of the microcomputer protection device, affecting the stable and safe operation of the power system, and the fault signal is not a periodic function.
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[0044] Such as figure 1 As shown, the present invention includes a high-voltage motor microcomputer protection device, including a DSP controller 1 and a host computer 15, and the input terminal of the DSP controller 1 is connected with a power supply module 13 and a man-machine communication module 2 for realizing multi-level The information transmission module 3 for information exchange during cascading, the analog quantity acquisition module for collecting the electrical parameters of the high-voltage motor, and the multi-channel switch quantity acquisition circuit 12 for detecting the trip position, the analog quantity acquisition module includes three-phase protection current mutual inductance 4, three-phase protection voltage transformer 6, zero-sequence current transformer 5 and the A / D conversion module 9 connected with the input end of DSP controller 1, the output end of described three-phase protection current transformer 4 and zero A current signal conditioning circ...
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