Batch verification system and verification method for power quality online monitoring device

Abstract

The invention discloses a power quality online monitoring device batch calibration system. A detection bench is used for placing a plurality of calibrated analog power quality online monitoring devices or digital power quality online monitoring devices. A controller is connected with the calibrated digital power quality online monitoring devices through network cables. A power quality signal generator control module is connected with a power quality signal generator through a special connecting line. The power quality signal generator is connected with the calibrated analog power quality online monitoring devices. The detection signal output ends of the calibrated digital power quality online monitoring devices and the calibrated analog power quality online monitoring devices are connected with the signal input end of a data processing module through a communication module. The signal output end of the data processing module is connected with a display module. The power quality online monitoring device batch calibration system of the invention can support the analog and digital power quality monitoring devices simultaneously. For the support to the digital power quality monitoring devices, an application is adopted to send lossless digital signals in a standard IEC 61850-9-2 frame format, and the calibration problem of the digital power quality monitoring devices is solved with high quality.

Description

technical field [0001] The invention relates to the field of power quality, in particular to a batch verification system for on-line power quality monitoring devices. Background technique [0002] At present, with the application of power quality on-line monitoring devices more and more widely, the detection and calibration of power quality on-line monitoring devices are becoming more and more frequent, and the workload is increasing, which puts forward requirements for new technology research and new product development. [0003] In the past two years, some universities and manufacturers have gradually developed a fully automatic testing platform for power quality monitoring devices that supports fully automatic testing and batch testing, which has greatly improved the efficiency of power quality monitoring device calibration. At present, the automatic detection platform of power quality monitoring devices on the market mainly adopts the standard source method, and generate...

AI Technical Summary

Problems solved by technology

At present, the automatic detection platform of power quality monitoring devices on the market mainly adopts the standard source method, and generates calibration signals through different types of power quality standard sources; since the power quality standard sources on the market are mainly analog output sources, there is no standard A digital power quality standard source with mature technology is available, so the detection platform mainly provides support for analog input power quality online monitoring devices, and cannot provide support for digital power quality online monitoring devices

[0004] Part of the detection platform realizes the verification of the digital power quality monitoring device by adding an analog / digital conversion device between the analog output power quality standard source and the digital power quality monitoring device, but the analog / digital conversion device itself will bring to the additional loss of precision

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