A system for testing a power quality monitoring device and a testing method thereof

Abstract

The invention belongs to the technical field of automatic detection of electric power equipment, and specifically relates to a system for testing a power quality monitoring device and a testing method thereof. The system includes a detection host, a standard source, and a power quality monitoring device. The detection host communicates with the power quality monitoring device through a GBIP bus The standard source is connected by communication, and the standard source is electrically connected with the power quality monitoring device through the test signal line. The power quality monitoring device forms a closed-loop communication control system with the detection host through Ethernet. The system and its testing method of the present invention can not only In addition to the accuracy test of power quality indicators, data model and communication protocol test, system self-test and fault identification and alarm functions including standard source overload judgment, power quality monitoring device wiring correctness, and closed-loop test environment integrity can also be realized. Further improve the intelligence, automation and work efficiency of the power quality monitoring device test.

Description

technical field [0001] The invention belongs to the technical field of fully automatic detection of electric power equipment, and in particular relates to a system for testing a power quality monitoring device and a testing method thereof. Background technique [0002] The local communication unit of the acquisition terminal is to realize the data communication between the acquisition terminal and the user's electric energy metering device. The communication modes of the communication unit mainly include public network communication, private network communication, carrier communication and small wireless communication. Network communication module, carrier communication module and small wireless communication module, each communication module has a local port and a channel port; the external dimensions, power supply, status, control, communication interface, communication protocol and communication timing of these ports are guaranteed communication modules A necessary condit...

AI Technical Summary

Problems solved by technology

The commonly used standard sources for power quality monitoring device testing are precision and expensive equipment. During the test process, the output of the standard source is overloaded due to improper control. On the one hand, it will affect the service life and precision of the standard source. The test process is terminated and the test needs to be restarted

[0005] (2) Does not have the function of testing the correctness of the wiring of the power quality monitoring device

When testing power quality monitoring devices in batches, especially multi-circuit monitoring devices, there are many voltage and current signal lines in the device, and the wiring work is very cumbersome, and it is inevitable that there will be wiring errors.

Once the wiring is wrong, it will cause the accuracy test results of some power quality indicators to be unqualified, so it is necessary to find the cause and retest, resulting in extended test time

[0006] (3) Does not have the test function of the integrity of the closed-loop test environment

Fully automatic testing of power quality monitoring devices requires the construction of a closed-loop testing environment, and any failure in a small link will cause the automatic testing system to fail to operate normally and correctly

Due to the large number of components of the fully automatic test system, it will be very cumbersome to manually find out the reason after the system fails to operate normally.

[0007] None of the above problems is a deficiency in the accuracy test function of the power quality monitoring device test system, but it will also lead to an increase in the complexity of the system application and a significant drop in test efficiency. Therefore, it is necessary to modify the test system to further improve the intelligence of the system.

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