Ground electric field measurement system for AC/DC parallel powerline and measurement method thereof
A transmission line and electric field measurement technology, applied in the direction of electromagnetic field characteristics, etc., can solve the problems that the measurement of AC field and DC field cannot be guaranteed, and it is difficult to obtain the true value of AC and DC, so as to achieve a long-term online detection and high measurement accuracy. Effect
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[0028] The AC-DC parallel transmission line ground electric field measurement system proposed by the present invention is described in detail as follows with reference to the drawings and embodiments:
[0029] The overall structure of the present invention is as figure 1 As shown, there are three parts including a rotating voltmeter, an oscilloscope, and a computer with a mixed electric field analysis program. Among them:
[0030] The rotating voltmeter is used to obtain the alternating current induced by the ground electric field of the AC-DC parallel transmission line to be measured;
[0031] The oscilloscope is used to sample the time-domain signal of the alternating current, display the sampled signal, and send the sampled result to the computer;
[0032] The computer storing the mixed electric field analysis program is used to perform Fourier transform on the time domain signal of the alternating current, analyze the frequency spectrum of the alternating current, and obtain ...
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