Voltage sag measuring device and system and control method

Abstract

The invention discloses a voltage sag measuring device and system and a control method, and the device comprises a device body, one end of the outer side wall of the device body is hinged with a device bin gate, the outer side wall of the device bin gate is fixedly connected with a display screen, and a plurality of groups of measuring plug ports are uniformly arranged below the display screen of the outer side wall of the device bin gate. One end of the outer side wall of the device bin door is connected with a measuring wire limiting and fixing mechanism. Through the arrangement of the fan, heat in the device body can be extracted from the top, meanwhile, through the arrangement of the wind power conversion mechanism, heat dissipation fan blades on a rotating shaft in the fixed bin can be synchronously driven to rotate, and external cold air is extracted into the device body, so that air circulation is formed in the device body, heat dissipation is faster, and the heat dissipation efficiency is improved. And therefore, the heat dissipation effect of the device is improved, electronic elements in the device body are prevented from being damaged by heating, the service life of the device is prolonged, and the safety of the device during use is further improved.

Description

technical field [0001] The invention belongs to the technical field of voltage measurement, and in particular relates to a voltage sag measurement device, system and control method. Background technique [0002] With the development of power electronic devices, especially the continuous increase of sensitive loads such as computer equipment, microelectronic equipment, and power electronic equipment, power users have increasingly higher requirements for the quality of power supply in power distribution systems. Voltage sag refers to the power supply voltage mean square The event that the root value suddenly drops in a short period of time, the Institute of Electrical and Electronics Engineers defines it as the voltage root mean square value drops to the range of 90% to 10% of the rated value, and the duration is 0.5 to 30 cycles, of which there will be a temporary The ratio of the root mean square value of the voltage during the drop to the root mean square value of the rated...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a voltage sag measurement device, system and control method, which solves the problem that when the existing device is in operation, heat will be generated inside, and the heat is discharged slowly, which will easily cause the electronic components in the device to overheat At the same time, the device needs to insert the measurement wire into the measurement socket when measuring. The existing device is easily pulled by external force, which will cause the measurement wire and the measurement socket to fall off, which will affect the measurement and reduce the work efficiency.

Images