Calibration device and calibration method for setting values of multiple voltage monitors

Abstract

The invention discloses a calibration device and calibration method for setting values of multiple voltage monitors. The device comprises a state sequence standard source module, at least two level acquisition modules and an upper computer; the state sequence standard source module is connected with at least two voltage monitors and the at least two level acquisition modules, and is used for providing detection voltage signals for the voltage monitors and performing synchronous time synchronization with the level acquisition modules, and the voltage values of the detection voltage signals aregradually increased or decreased according to a preset step length; the level acquisition modules are connected with the voltage monitors in a one-to-one correspondence manner and are used for acquiring alarm signals sent by the voltage monitors and determining the time for sending the alarm signals; and the upper computer is connected with the level acquisition modules and the state sequence standard source module, and is used for receiving the time when the alarm signal is sent and the detection voltage signal, and judging the setting value of the voltage monitor according to the received alarm signal time and the detection voltage signal. According to the invention, the calibration efficiency and precision can be improved, and the calibration error is reduced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of instrument detection, and in particular to a verification device and a verification method for setting values ​​of multiple voltage monitors. Background technique [0002] In the power system, in order to maintain the reactive power balance of the system and maintain the stability of the system, it is necessary to install a voltage monitor at the voltage monitoring point of the user's power receiving end of each voltage level to monitor whether the voltage value of the user's power receiving end of each level is normal. scope. In order to ensure the accuracy and reliability of the online operation of the power system and the network-connected voltage monitor, power operation and maintenance personnel need to calibrate the voltage monitor to ensure that the voltage monitor can send out an alarm signal in time when the online operation and network-connected voltage are abnormal, prompt...

AI Technical Summary

Problems solved by technology

[0003] At present, there is equipment on the market that can simultaneously verify multiple voltage monitors, but the verification of the setting value of the voltage monitor by this device not only takes a long time, but also leads to low verification efficiency of the voltage monitor, and the upper computer The communication pressure is high, so there is a problem of delay in information transmission, which leads to a larger error in the setting value of the verified voltage monitor than the actual setting value of the voltage monitor

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