Electric power automation equipment power failure detection and alarm device

Abstract

The invention discloses a power supply failure detection and alarm device for electric automation equipment, which includes a power input terminal, a power output terminal, a voltage detection circuit, an incoming call delay alarm circuit, an alarm output circuit, a current detection circuit and other circuits; The voltage detection circuit is connected; the voltage detection circuit is connected to the alarm output circuit through the incoming call delay alarm circuit; the output terminal of the power supply is connected to the current detection circuit, and the current detection circuit is connected to the current protection circuit, the alarm current sensitivity adjustment circuit and the instantaneous fluctuation of the load in turn. The elimination circuit, the load instantaneous fluctuation elimination circuit is also connected with the work indication circuit and the alarm output circuit. The power supply failure detection and alarm device for electric automation equipment of the present invention has the advantages of being able to detect and alarm failures such as power failure, abnormal shutdown, and crash of the electric automation equipment, and improving the safety and stability of the operation of the electric automation equipment.

Description

technical field [0001] The invention relates to a power supply failure detection and alarm device for electric automation equipment. Background technique [0002] Electricity is the pillar of the national economy, industrial and agricultural production and daily life are inseparable from electricity. Power automation equipment is the supporting equipment to ensure the safe and stable operation of the power system. It is responsible for the protection, monitoring and monitoring tasks of the main power equipment, and plays a vital role in the safe and stable operation of the power grid. [0003] Since electric automation equipment is also an electronic device, it will not work when the external power supply is lost or the internal power supply of the device fails. In addition, power automation equipment is also a kind of information equipment, and there will be abnormal operation states such as abnormal shutdown and crash. Therefore, it is very necessary to send an alarm sig...

AI Technical Summary

Problems solved by technology

[0003] Since electric automation equipment is also an electronic device, it will not work when the external power supply is lost or the internal power supply of the device fails.

Images