High tension transmission line comprehensive tester and testing method
A high-voltage transmission line and comprehensive tester technology, applied in the direction of fault location, etc., can solve the problems of line induced voltage and current that cannot be tested safely and accurately, and achieve powerful data processing capabilities, high anti-interference ability, and good shockproof performance.
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[0030] Such as figure 1 As shown, the data test and calculation unit is set in the instrument, and the data test and calculation unit is connected to the power supply module, PWM control unit, DC constant voltage and constant current source, impedance matching unit, standard resistance, measured circuit resistance, relay control unit, storage and printing unit , display unit and keyboard; PWM control unit, DC constant voltage and constant current source, power filter unit, impedance matching unit, measured line resistance and standard resistance are connected in sequence; the relay control unit is connected to the interference voltage detection unit and impedance matching unit; the interference voltage The detection unit and the standard resistance are grounded; the two ends of the measured line resistance are connected to the overvoltage protection unit.
[0031] The data test calculation unit adopts a 32-bit high-speed processor; the overvoltage protection unit is a low-volt...
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