Synthesis test synchronous control system

Abstract

The invention belongs to the technical field of high-voltage electrical appliances, and in particular relates to a synthetic test synchronous control system for high-voltage circuit breaker synthetic tests, which includes: a main control station, a current measurement part, an on-site synchronous control unit and an on-site sequence control unit; the main control The station realizes information exchange with the on-site synchronous control unit and the on-site timing control unit; the on-site synchronous control unit collects the short-circuit current in real time through the current measurement part, predicts the zero-crossing point of the test current, and then sends out a synchronous control signal; the on-site timing control unit Receive the setting parameters from the main controller, and send out timing control signals accordingly; the current measurement part includes: current sensor, signal conditioning circuit, A / D converter; the test current is converted into voltage by the current sensor and signal conditioning circuit After the signal is A / D converted, it is sent to the synchronous control unit for digital signal processing; the synchronous control signal is a voltage source synchronous control signal and an arc extension loop synchronous control signal.

Description

technical field [0001] The invention belongs to the technical field of high-voltage electrical appliances, and in particular relates to a synthesis test synchronous control system used for synthesis tests of high-voltage circuit breakers. Background technique [0002] With the development of my country's electric power industry, high-voltage circuit breakers have developed rapidly in quantity, quality and capacity, and the test requirements for high-voltage circuit breakers are also getting higher and higher. Because the connecting and breaking process of the high-voltage circuit breaker is very complicated, it is not possible to completely rely on theoretical analysis and quantitative calculation to design a circuit breaker that meets the breaking performance and requirements at this stage. On-off capability under high voltage conditions. [0003] In order to reduce equipment investment and meet the needs of the development of high-voltage and large-capacity high-voltage c...

AI Technical Summary

Problems solved by technology

The disadvantage is that the parameters of the current source and voltage source and the coordination of the action time are relatively high. If there is a mistake, the equivalence of the test is difficult to be guaranteed.

However, at present, the synchronous control of the voltage loop and the arc extension loop is mainly obtained by analog voltage comparison and current equalization method, and the problem of zero-crossing prediction of asymmetric short-circuit current has not been successfully solved, and it is still necessary to rely on experienced technicians to adjust the synchronous control device The setting time is long, the work efficiency is low, and it limits the further improvement of the success rate of the synthetic test

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