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A wide-area real-time monitoring system and method for power grid broadband oscillation

A real-time monitoring system, real-time monitoring technology, applied in the direction of electric power measurement through current/voltage, electrical devices, measuring devices, etc., can solve the problem that oscillation cannot be monitored in real time, achieve fast monitoring speed, strong real-time performance, and avoid oscillation Effect

Active Publication Date: 2021-02-12
CHINA ELECTRIC POWER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to provide a wide-area real-time monitoring system and method for power grid broadband oscillation to solve the technical problem that the oscillation of the existing WAMS wide-area monitoring system cannot be monitored in real time

Method used

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  • A wide-area real-time monitoring system and method for power grid broadband oscillation
  • A wide-area real-time monitoring system and method for power grid broadband oscillation
  • A wide-area real-time monitoring system and method for power grid broadband oscillation

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Embodiment 1

[0055] see figure 1As shown, the present invention provides a wide-area wide-area real-time monitoring system for power grid broadband oscillation, which includes a main station end broadband oscillation wide-area real-time monitoring and analysis module and N plant end broadband oscillation real-time monitoring and early warning modules; N is a positive integer.

[0056] The real-time monitoring and early warning module of broadband oscillation at the plant station is used to realize pre-warning, real-time monitoring and alarm transmission of various broadband oscillations including low-frequency oscillation, sub / super synchronous oscillation, and high-order harmonic oscillation of the power grid;

[0057] The broadband oscillation wide-area real-time monitoring and analysis module at the master station is used to realize real-time monitoring at the wide-area level of broadband oscillation of the power grid and accident analysis at the wide-area level after oscillation.

[00...

Embodiment 2

[0079] see figure 2 As shown, the present invention also provides a wide-area real-time monitoring method for power grid broadband oscillation, including:

[0080] The real-time monitoring and early warning module of broadband oscillation at the station end monitors the low-frequency oscillation, sub- / super-synchronous oscillation, and high-order harmonic oscillation of the power grid at the station end in real time. When the oscillation exceeds the oscillation alarm threshold, an oscillation alarm signal is issued and the oscillation alarm The signal and oscillation monitoring data are transmitted to the broadband oscillation wide-area real-time monitoring and analysis module at the master station;

[0081] The broadband oscillation wide-area real-time monitoring and analysis module at the master station side performs real-time monitoring at the broadband oscillation wide-area level of the power grid and accident analysis at the wide-area level after oscillation according to...

Embodiment 3

[0085] see image 3 As shown, the present invention also provides a wide-area real-time monitoring system for power grid broadband oscillation, the system includes: a processor and a memory coupled to the processor, the memory stores a computer program, and the computer program is controlled by the When the above-mentioned processor is executed, the method steps for implementing a wide-area real-time monitoring method for wide-band oscillation of the power grid in Embodiment 2 are implemented.

[0086] Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (in...

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Abstract

The invention discloses a wide-area real-time monitoring system and method for power grid broadband oscillation. Harmonic / interharmonic oscillation is monitored in real time. When the oscillation exceeds the oscillation alarm / early warning threshold, an oscillation alarm / early warning signal is issued, and the oscillation alarm / early warning signal and oscillation monitoring data are transmitted to the main station for wide-band oscillation wide-area real-time monitoring and analysis module; the broadband oscillation wide-area real-time monitoring and analysis module at the main station end, which is used to perform real-time monitoring at the broadband oscillation wide-area level of the power grid and accident analysis at the wide-area level after oscillation according to the received oscillation alarm signal and oscillation monitoring data. The invention can provide a new supporting means for the operation monitoring and safety control of the power grid, and can promote and promote the consumption of new energy sources such as wind power and photovoltaics under the premise of ensuring the safety of the power grid operation.

Description

technical field [0001] The invention belongs to the field of electric power system automation, and in particular relates to a system and method for wide-area real-time monitoring of wide-frequency oscillation of a power grid. Background technique [0002] With the large-scale grid connection of new energy, especially the massive access of power electronic equipment in the "source-grid-load" link, electrical resonance occurs between power electronic equipment and between power electronic equipment and the grid. This type of oscillation does not involve The mechanical element of the generator set is called a new type of oscillation. [0003] It was early discovered that reactive power compensation devices, etc. would cause sub-synchronous oscillations in the power grid. For regional power grids where new energy is centrally connected, although sub-synchronous oscillations were also found in the early days, such as the 6-8Hz sub-synchronous oscillation in the Guyuan area of ​​H...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R21/06G01R21/00G01R19/04
CPCG01R19/04G01R21/002G01R21/003G01R21/006G01R21/06
Inventor 樊陈姚建国倪益民於益军窦仁晖张海东赵国庆孙名扬于芳
Owner CHINA ELECTRIC POWER RES INST
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