System and method for testing power quality monitoring device

A power quality monitoring and power quality technology, applied in the field of testing, can solve the problems of heavy workload, power quality index testing, long time consumption, etc., and achieve the effects of easy maintenance, large scalability, and large expansion space.

Inactive Publication Date: 2014-03-05
STATE GRID CORP OF CHINA +1
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Problems solved by technology

At present, power quality monitoring equipment mainly uses manual or semi-automatic testing to test the measurement accura...

Method used

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  • System and method for testing power quality monitoring device

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Experimental program
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Effect test

Embodiment

[0052] In the following, the amplitude of the power supply voltage is used as the detection target, and the specific test method is as follows:

[0053] "Electromagnetic Compatibility Test and Measurement Technology Power Quality Measurement Method" (GB / T17626.30) stipulates that for a 50Hz power system, the 150-cycle value of the supply voltage should be the root mean square value of 15 10-cycle values, and every 10min The RTC timing point must be A resynchronization is performed at 150-cycle intervals. The basic measurement time interval of the supply voltage shall be 10 cycles.

[0054] Specific test implementation method:

[0055] (1) All devices in the system are working normally;

[0056] (2) Ensure that the signal acquisition device in the system, the power quality monitoring equipment under test and the GPS time are synchronized;

[0057] (3) The power quality standard source receives the test workstation command and generates a test signal, which is a changing sign...

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Abstract

The invention relates to a system and method for testing a power quality monitoring device. The system for testing the power quality monitoring device comprises a power quality standard source, a signal collection device, a GPS time calibration device, a protocol converter, a test station and a tested device, wherein the power quality standard source is connected with the signal collection device and the tested device through the GPS time calibration device, and the test station is connected with the tested device and the signal collection device. The method for testing the power quality monitoring device comprises the steps of (1) starting the device, (2) carrying out GPS time synchronization, (3) receiving an instruction, generating a test signal, (4) enabling the tested device to receive the test signal, storing measured data in the test station, (5) enabling the test station to receive a power quality index standard value uploaded by the signal collection device, and (6) calculating indexes of the tested device through receiving of the power quality index standard value and measured values of the tested device, and generating a test result report. According to the system and method for testing the power quality monitoring device, testing of measurement accuracy of the power quality monitoring device and testing of a measuring method can be achieved, and working efficiency is greatly improved.

Description

technical field [0001] The invention belongs to testing technology, and in particular relates to a system and method for testing power quality monitoring equipment. Background technique [0002] "Power quality monitoring equipment" is a secondary device used for monitoring power quality indicators in the power grid. The IEC61000 series of standards and my country's national standards have clear regulations on the measurement method and accuracy of power quality indicators for power quality monitoring equipment. degree for testing. At present, the power quality monitoring equipment mainly uses manual or semi-automatic testing to test the measurement accuracy, and has not yet tested the measurement method of the power quality index, and this test method requires a lot of work and takes a long time. In view of this situation, it is urgent to design an automatic test system for power quality monitoring equipment, which can test the frequency, voltage and current effective value...

Claims

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Application Information

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IPC IPC(8): G01R35/00
Inventor 安哲杨岑玉赵鹏程黄蒙王同勋周胜军
Owner STATE GRID CORP OF CHINA
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