System and method for testing sensitive components of overcurrent protection and voltage monitoring device

Abstract

The invention discloses a system and method for testing the sensitive elements of an over-current protection and voltage monitoring device. The system comprises a testing signal source, an equipment cabinet, a front-end processor, an acquisition control device, an adapting device, and a switching power supply. The front-end processor is used for receiving a testing case and analyzing the testing case as a control instruction. The testing signal source is used for receiving a control instruction. The acquisition control device is used for receiving a control instruction. The over-current protection and voltage monitoring device comprises a relay board, a main board, and a display screen. A plurality of sensitive elements on the relay board are subjected to function testing according to a testing signal. The display screen sets a setting threshold value and displays the testing signal. The main board controls the relay board to be in a normal operating state according to the setting threshold value and the testing signal. The system and method for testing the sensitive elements of the over-current protection and voltage monitoring device use an automated, intellectualized, and integrated online monitoring means and may accurately and high-efficiently test the functions of the sensitive elements in the over-current protection and voltage monitoring device.

Description

technical field [0001] The invention relates to the on-line monitoring technology of power equipment in nuclear power plants, in particular to a testing system and method for sensitive components of overcurrent protection and voltage monitoring devices in nuclear power plants. Background technique [0002] The over-current protection and voltage monitoring device is one of the important components of nuclear power plant circuit protection. It is mainly used for over-current protection of the circuit in the power grid system of the nuclear power plant, and can display the voltage value of the bus in the system. Once the safe setting current value and action time are set, when the current in the circuit exceeds the setting range, the overcurrent protection and voltage monitoring device will control the internal relay to operate, thereby disconnecting the circuit and preventing accidents. However, during long-term operation, the circuits on the overcurrent protection and voltag...

AI Technical Summary

Problems solved by technology

Under normal circumstances, the replacement of this series of overcurrent protection and voltage monitoring devices depends on manual calibration or detection, and the working cycle of the card is only determined by visual identification or regular inspection of the components of the overcurrent protection and voltage monitoring device. , the test content is single, the operation is complicated, it is impossible to automatically analyze the life of the old card, and it lacks the troubleshooting and reliability detection methods for the hidden dangers of overcurrent protection and voltage monitoring devices

Images