Detection method of phasor measurement unit PMU

A technology of phasor measurement unit and detection method, which is applied in the field of power system, can solve the problems of uncertain test data source, untraceability, time synchronization and incomplete content, etc., and achieve the effect of comprehensive test content and avoiding errors

Inactive Publication Date: 2010-01-20
CENT CHINA GRID +1
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  • Description
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Problems solved by technology

[0008] The invention of this test method is to solve the problems of uncertain and untraceable test data sources, time synchronization and incomplete content, and for...

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  • Detection method of phasor measurement unit PMU
  • Detection method of phasor measurement unit PMU
  • Detection method of phasor measurement unit PMU

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] 1. This test method mainly includes the following aspects:

[0041] 1) Test content

[0042] 2) Environmental testing, the environmental testing mainly examines the adaptability of the PMU device to the environment, to ensure that the PMU device can complete the basic functions in the climatic environment concerned in the test in the future without malfunctioning.

[0043] 3) The EMC test mainly examines the adaptability of the PMU device in various electromagnetic environments to ensure that the PMU device can withstand electromagnetic interference from the outside during operation without abnormalities, malfunctions or failures.

[0044] 4) Function and performance test, mainly to verify whether the PMU device can complete the most basic functional requirements, and provide an important basis for future use. The detailed test items of function and performance are shown in Table 1.

[0045] Table 1 PMU device performance and function test item table

[0046]

[0...

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PUM

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Abstract

The invention relates to a detection method of a phasor measurement unit (PMU), which comprises the following steps: firstly, establishing various needed waveform library based on the test items, then establishing a circuit diagram with a PSCAD tool and adjusting each parameter according to the test demands to form various waveforms; when in test, selecting a corresponding .seq file or a waveform file of a COMTRADE format according to the test items; playing back the .seq file or COMTRADE file by using an Omicron relay protection testing device; when in playback of the .seq file, setting a waveform playback time in the 'GPS Set' to play back the waveform in a prescribed moment; executing data acquisition by using a PMU, and then delivering messages to main station simulation tool software through a communication protocol; reading the protocol message in virtue of the PMU synchronized phasor data analysis software, and converting and storing the message into the amplitude and phase data; performing frequency analysis for a static measurement precision test; and finding the optimal range of device measurement precision.

Description

technical field [0001] The invention relates to a detection method of a phasor measurement unit PMU, which belongs to the technical field of power systems. Background technique [0002] With the continuous expansion of the grid scale, the interconnection of AC and DC between regional grids and the improvement of grid transmission capacity, the problem of grid stability has become increasingly prominent. As far as the Central China Power Grid is concerned, the "10.29" in 2005 and the "7.1" accident in 2006 have proved the importance of stable operation of the power grid and the urgent need for power grid security and stability control. [0003] In order to realize real-time monitoring of grid operation, identification and analysis of grid stability and system low-frequency oscillation, the application of phasor measurement unit PMU in power system is particularly important. [0004] During the operation of the PMU device, a series of problems such as low-frequency oscillatio...

Claims

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Application Information

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IPC IPC(8): G01R35/00
Inventor 王健李亚萍张胜贺春任春梅
Owner CENT CHINA GRID
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