Power grid broadband oscillation wide-area real-time monitoring system and method

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

Active Publication Date: 2020-11-20
CHINA ELECTRIC POWER RES INST
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  • Abstract
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  • 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 oscil

Method used

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  • Power grid broadband oscillation wide-area real-time monitoring system and method
  • Power grid broadband oscillation wide-area real-time monitoring system and method
  • Power grid broadband oscillation wide-area real-time monitoring system and method

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Experimental program
Comparison scheme
Effect test

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 power grid broadband oscillation wide-area real-time monitoring system and a power grid broadband oscillation wide-area real-time monitoring method. The system includes: a plant station end broadband oscillation real-time monitoring and early warning module and a main station end broadband oscillation wide-area real-time monitoring and analysis module. The plant station end broadband oscillation real-time monitoring and early warning module is used for monitoring low-frequency oscillation, sub/super-synchronous oscillation and higher harmonic/inter-harmonic oscillation of a power grid at a plant station end in real time. When the oscillation exceeds an oscillation alarm/early warning threshold value, an oscillation alarm/early warning signal is sent out, and the oscillation alarm/early warning signal and oscillation monitoring data are transmitted to the main station end broadband oscillation wide-area real-time monitoring and analysis module; and the main station end broadband oscillation wide-area real-time monitoring and analysis module is used for carrying out real-time monitoring on the broadband oscillation wide-area level of the power grid and accident analysis on the wide-area level after oscillation according to the received oscillation alarm signal and oscillation monitoring data. According to the invention, a new support means can be provided for operation monitoring and safety control of the power grid, and absorption of new energy such as wind power and photovoltaic power can be promoted on the premise of guaranteeing the operation safety of the power grid.

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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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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