Mimic-disconnecting switch testing device for relay protection and control method thereof

Abstract

The invention discloses a mimic-disconnecting switch testing device for relay protection and a control method thereof. The mimic-disconnecting switch testing device comprises an acquisition module, a processor, an execution module, a display module, a setting module, an alarm module, a direct-current power supply current sampling circuit and a power supply module. The processor receives and processes relay protection device commands inputted by the acquisition module and directs the execution module to simulate the opening and closing operations of a circuit breaker and displays the related state change under the control of an embedded program. The setting module adjusts the command identification voltage reference voltage in the acquisition module according to the set opening and closing setting current and stores the set opening and closing time in the processor. The display module displays the state of the circuit breaker under the control of the processor. The mimic-disconnecting switch testing device can achieve the single-phase opening and closing test and the three-phase opening and closing test of the relay protection equipment and the anti-tripping test of the operation box of the circuit breaker. The mimic-disconnecting switch testing device can simulate the related operating condition of the field circuit breaker relative to the relay protection equipment more reliably, and performs the equipment protection debugging.

Description

technical field [0001] The invention relates to a simulated circuit breaker testing device and a control method thereof, in particular to a simulated circuit breaker testing device and a control method for relay protection. Background technique [0002] During the pre-test and transformation of the relay protection device in the substation, it is often impossible to carry out the operation characteristic debugging of the protection device and the transmission test of the whole circuit group because the primary circuit breaker equipment does not have the transmission conditions. Once the circuit breaker equipment has the transmission conditions, it needs to go through multiple sets of procedures such as maintenance and testing, which does not include the time it takes to deal with temporary defects of the switch. After the primary circuit breaker equipment has the transmission conditions, there is often little time left for the protection to conduct the transmission test of t...

AI Technical Summary

Problems solved by technology

Therefore, work steps such as protection performance test and circuit group test work are often omitted due to rushing the construction period, leaving potential safety hazards

However, it is unrealistic to reduce the maintenance and test time of a switchgear

Even if there is plenty of time, the work efficiency will be affected due to downtime and waiting; at the same time, due to the need to drive multiple switches for the performance test of the protection equipment, the probability of circuit breaker failure is increased, and the safety of the primary equipment will also be affected to a certain extent.

[0003] In addition, many relay protection device training bases are only equipped with a single device, without actual circuit breakers, and cannot correctly simulate the operating status of on-site equipment for protection performance tests and circuit group tests.

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