Relay protection action contact test system

Abstract

The invention relates to the field of relay protection action contact testing, in particular to a relay protection action contact testing system which is composed of a collector input module, a collector output module, a wireless module and a man-machine interaction module. After the collector input module can input a contact action power level signal, through a designed photoelectric isolation loop and an AD conversion circuit, analog-to-digital conversion of active or passive signals of the collector is realized, and the correctness of the loop is verified through a Matlab analogue simulation experiment. According to the invention, the relay protection action contact testing system is simple and scientific in overall design, convenient to operate and use, high in expandability and wide in application range, and compared with an existing relay protection action contact testing system, the relay protection action contact testing system can shorten contact action testing time by 50% orabove during specific work, saves power failure time and can generate huge economic benefits through multiple power supplies.

Description

technical field [0001] The invention relates to the field of relay protection action contact testing, in particular to a relay protection action contact testing system. Background technique [0002] Relay protection tester (relay protection test device) English name: RXRelay Tester. The relay protection microcomputer test device is an important test tool to ensure the safe and reliable operation of the power system. With the rapid development of computer technology, microelectronics technology, and power electronics technology, it is an inevitable trend of technological progress to continuously introduce new high-performance relay protection test devices using the latest technological achievements. The relay protection test instrument is generally divided into two circuits, the main circuit and the auxiliary circuit. The main circuit is adjusted by a large knob, and the auxiliary circuit is adjusted by a small knob. The main circuit controls various output quantities through...

AI Technical Summary

Problems solved by technology

[0003] At present, the traditional relay protection test system needs to repeat the test many times when verifying the protection with a large number of contacts such as bus differential and transformer contacts. During the test, 3-4 people are required to assist and cooperate. The operation is very inconvenient and the contact action test cannot be guaranteed. In addition, in view of the long and scattered distance between some action contacts and the device, the test line is often extended and spliced ​​during the test, and the test safety hazard is relatively large.

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