High voltage output device and method for feed line automation test

Abstract

The invention provides a high voltage output device and method for a feed line automation test. The high voltage output method comprises the steps: a DA output signal is received through a bridge structure circuit, and is converted into two channels of control signals through a phase shifting mode, wherein the amplitudes of the two channels of control signals are identical to each other and the phase difference between the phases of the two channels of control signals is 180DEG; the two channels of control signals respectively control two independent amplitude and power amplifiers to perform amplification of amplitude and power; the amplified two channels of control signals are fed back to the front end through a hardware negative feedback mode to guarantee the accuracy and the stability for signal output; as the circuit structures of the two parts are fully symmetrical, a voltage output of two channels of voltages to ground is obtained, wherein the two channels of voltages to ground are 0-120V and the phase difference between the phases of the two channels of voltages to ground is 180DEG; and at this time output of one channel is taken as the reference ground so that output of high voltage can be obtained. Compared with the prior art, the high voltage output device and method for a feed line automation test can directly realize output of high voltage through a hardware circuit, and greatly improve the output voltage range of a feed line automation tester so that wiring is more convenient during the field testing process.

Description

technical field [0001] The invention relates to the technical field of feeder automatic testing, in particular to a high-voltage output device and method for a feeder automatic tester. Background technique [0002] The safe and stable operation of the power grid is the premise and basis for realizing the reliability of power supply. Before the distribution network system is put into operation, the entire system must be tested. The operation of the feeder automation system relies on the data collected by the distribution terminal. In order for the automation system to operate normally, the data collection capability of the power distribution terminal must be tested. [0003] The feeder automation system needs to be tested for various functions before it is officially put into operation. The test equipment is required to provide multiple voltage outputs with high precision, wide range and certain load capacity. In the test of the prior art, the voltage output range of the gen...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a high-voltage output device and method for a feeder automatic tester to solve the problems of narrow application range and complicated operation of test equipment in the prior art

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