Online comparison detection system for power quality monitoring device and detection method thereof

Abstract

The invention relates to the technical field of electric equipment detection and particularly relates to an online comparison detection system for a power quality monitoring device and a detection method thereof. The system comprises a signal acquisition module, a standard power quality monitoring device, a detected power quality monitoring device, a network switch and a detection host. The resultof the power quality indicator of a monitoring point signal measured by the standard power quality monitoring device is compared with the result of the power quality indicator of a monitoring point signal measured by the detected power quality monitoring device, the error is calculated, whether the power quality indicator measurement result of the detected power quality monitoring device is qualified is determined, on-site detection of the power quality monitoring device is completed without changing wiring of the detected power quality monitoring device and through terminating normal operation of the detected power quality monitoring device for the short time, detection efficiency is improved, labor and material cost is reduced, so regular inspection of the power quality monitoring device can be carried out effectively.

Description

technical field [0001] The invention relates to the technical field of power equipment detection, in particular to an online comparison detection system and a detection method for a power quality monitoring device. Background technique [0002] The operation management of power quality monitoring devices is one of the tasks of power quality technical supervision. After the power quality monitoring device has been operated for a long time in the harsh electromagnetic environment, it is inevitable that the reliability and measurement accuracy of the power quality monitoring device will decrease due to the aging and failure of components, and a large amount of invalid and abnormal data will be generated. Conduct regular testing. [0003] At present, the detection of power quality monitoring devices is usually realized based on the standard source method, and there are mainly the following two implementation methods: 1. Remove the power quality online monitoring device and send...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the standard source (such as: FLUKE 6100 series) is usually too large to be carried, and the instrument is very precise and easy to be damaged. Sometimes it is necessary to carry several standard sources together to form a three-phase circuit for detection

Although some portable standard sources (such as: CMC series standard sources produced by Omicron) are convenient and easy to use, the accuracy of their output signals is low, especially for the generation of some high-order harmonic signals, which will inevitably affect The test results of the monitoring device

[0004] To sum up, there are many deficiencies in the existing technology, and because the power quality online monitoring devices have the characteristics of large number and scattered installation, if the power quality monitoring devices are regularly tested according to the existing technology, it is necessary to invest a lot of manpower and resources. Material resources, so the realizability is poor, making it difficult to carry out regular inspection work effectively

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