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Phasor measuring set based on in situ spectroscopic analysis and applied wide domain measuring system

A spectrum analysis and phasor measurement technology, applied in the field of wide-area measurement, can solve the problem that the WAMS master station cannot meet the real-time requirements of low-frequency oscillation detection, and achieve the effect of reducing the amount of calculation

Active Publication Date: 2009-06-17
STATE GRID CORP OF CHINA +1
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Problems solved by technology

However, the number of computing servers in the WAMS master station is usually fixed
Therefore, it is easy to cause the WAMS master station to fail to meet the real-time requirements of low-frequency oscillation detection

Method used

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  • Phasor measuring set based on in situ spectroscopic analysis and applied wide domain measuring system
  • Phasor measuring set based on in situ spectroscopic analysis and applied wide domain measuring system
  • Phasor measuring set based on in situ spectroscopic analysis and applied wide domain measuring system

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Embodiment Construction

[0041] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] The technical problem to be solved by the present invention is to provide a phasor measurement device based on in-situ spectrum analysis and an applied wide-area measurement system, which can effectively reduce the calculation burden of the application server of the WAMS master station, and realize real-time fast low-frequency oscillation of large-scale power grids detection and analysis.

[0043] The wide-area measurement system of the present invention, by adding a spectrum analysis unit and a low-frequency oscillation detection unit in each PMU sub-station, each PMU sub-station performs spectrum analysis and oscillation detection on-site for each measurement real-time data collected, and detects As a result, the oscillat...

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Abstract

The invention concretely discloses a wide area measurement system which is applied to a phasor measurement unit and based on local frequency spectrum analysis, which comprises a WAMS main station, a PMU substation and a power data network; the PMU substation comprises a GPS time service unit, a synchronized phasor acquisition unit, and a data centralized processing unit; the WAMS main station sends measurement and configuration information, measurement information to be detected and thresholds of a plurality of low-frequency oscillation parameters and receives the parameters measured by low-frequency oscillation which exceed the thresholds and return from each PMU substation for comprehensive analysis in order to obtain overall oscillation mode information; the PMU substation also comprises a frequency spectrum analysis unit and a low-frequency oscillation detection unit. The invention also discloses a phasor measurement unit based on the local frequency spectrum analysis. The adoption of the system and device of the invention can realize real-time and rapid low-frequency oscillation detection and analysis of a large-scale electricity grid.

Description

technical field [0001] The invention relates to the field of wide-area measurement, in particular to a phasor measurement device based on in-situ frequency spectrum analysis and an applied wide-area measurement system. Background technique [0002] With the increasing scale of the power grid, low-frequency oscillation has become one of the serious threats to the stable operation of the power system. Therefore, online detection and analysis of low-frequency oscillations based on measurement information of a phasor measurement unit (PMU: Phasor Measurement Unit) is the most important application of a wide-area measurement system at present. [0003] refer to figure 1 , is a structural diagram of the wide-area measurement system described in the prior art. [0004] The wide area measurement system includes: a wide area measurement system (WAMS: Wide Area Measurement System) master station 11 and a PMU substation 12 , which realize data communication through a power data netwo...

Claims

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Application Information

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IPC IPC(8): G01R31/00G01R25/00G01R23/16
Inventor 辛耀中段刚陶洪铸袁博王永福王振华肖晓春石俊杰
Owner STATE GRID CORP OF CHINA
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