An electromagnetic voltage transformer primary winding tail end insulation detection method and device
A technology of voltage transformer and detection method, which is applied in the direction of measuring devices, instruments, measuring electricity, etc., can solve problems such as voltage rise, transformer explosion, power grid accident occupation, etc., achieve high accuracy, simple detection circuit, and detection strong signal effect
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Embodiment 1
[0038] see figure 2 , first follow the figure 1 Connect the detection device, the short-circuit switch 4 is connected to both ends of the open triangle winding 2 of the electromagnetic voltage transformer 1, the waveform acquisition module 6 is connected to the measurement or metering winding 3 of the electromagnetic voltage transformer 1, and the waveform acquisition module 6 is used for acquisition Measure or measure the three-phase voltage waveform of the winding 3 and synthesize the zero-sequence voltage waveform, set the resonance eliminator 9 at the end of the primary winding of the electromagnetic voltage transformer 1, connect the short switch 4 and the waveform acquisition module 6 to the control module 5, and the waveform The output terminal of the acquisition module 6 is connected with a judgment module 7, and the judgment module 7 analyzes the zero-sequence voltage when the short-circuit switch 4 is closed and the zero-sequence voltage after the short-circuit swit...
Embodiment 2
[0042] see figure 2 , first follow the figure 1 Connect the detection device, the short-circuit switch 4 is connected to both ends of the open triangle winding 2 of the electromagnetic voltage transformer 1, the waveform acquisition module 6 is connected to the measurement or metering winding 3 of the electromagnetic voltage transformer 1, and the waveform acquisition module 6 is used for acquisition Measure or measure the three-phase voltage waveform of the winding 3 and synthesize the zero-sequence voltage waveform, set the resonance eliminator 9 at the end of the primary winding of the electromagnetic voltage transformer 1, connect the short switch 4 and the waveform acquisition module 6 to the control module 5, and the waveform The output terminal of the acquisition module 6 is connected with a judgment module 7, and the judgment module 7 analyzes the zero-sequence voltage when the short-circuit switch 4 is closed and the zero-sequence voltage after the short-circuit swit...
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