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Method, system and device for arranging PMU (Phasor Measurement Unit) in power grid and computer medium

A technology of power grid and analysis method, applied in the direction of circuit device, system integration technology, information technology support system, etc.

Active Publication Date: 2019-10-25
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to provide a PMU placement method in the power grid, which can solve the technical problem of how to ensure the accuracy of the state estimation of the power grid with the help of the PMU to a certain extent

Method used

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  • Method, system and device for arranging PMU (Phasor Measurement Unit) in power grid and computer medium
  • Method, system and device for arranging PMU (Phasor Measurement Unit) in power grid and computer medium
  • Method, system and device for arranging PMU (Phasor Measurement Unit) in power grid and computer medium

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Embodiment Construction

[0059] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0060] see figure 1 , figure 1 It is a flow chart of a method for PMU placement in a power grid provided by an embodiment of the present application.

[0061] A method for PMU placement in a power grid provided in an embodiment of the present application may include the following steps:

[0062] Step S11: Obtain the original measurement values ​​obtained after measuring each measurement node in the power grid.

[0063] In practical applications, the original measurement value obt...

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Abstract

The invention discloses a method, system and device for arranging a PMU (Phasor Measurement Unit) in a power grid and a computer medium. The method comprises the steps of acquiring original measurement values obtained after measurement is carried out on each measurement node in the power grid; determining the influence weight of each measurement node on the state estimation result of the power grid according to the original measurement values based on a sensitivity analysis method for state estimation; determining the arrangement result of the PMU in each measurement node according to the influence weight; acquiring a measurement result collected by the PMU after the PMU is arranged in the power grid according to the placement result; and carrying out performance analysis on the power gridbased on the measurement result. According to the method provided by the invention for arranging the PMU in the power grid, the arrangement result of the PMU is enabled to be associated with the influence weight of each measurement node, and the accuracy of state estimation performed on the power grid by means of the PMU can be guaranteed. The system and device provided by the invention for arranging the PMU in the power grid and the computer readable storage medium also solve the corresponding technical problems.

Description

technical field [0001] The present application relates to the technical field of power system wide-area measurement, and more specifically, relates to a PMU placement method, system, equipment and computer medium in a power grid. Background technique [0002] With the development of wide area measurement system (WAMS) in the power system, the energy management method of the power grid is gradually changing. State estimation is a crucial front-end link of power grid energy management. Traditional state estimation relying on RTU cannot measure the voltage amplitude and phase angle of nodes, but the WAMS-based PMU (PhasorMeasurement Unit, that is, synchronized phasor measurement device) provides time-scaled voltage amplitude and phase angle for power system state estimation. Angle measurement makes the state estimation have higher accuracy. [0003] However, the estimation result of the state estimation of the power grid is affected by the placement of the PMU in the power gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G01R19/00G01R25/00H02J13/00
CPCH02J13/0075H02J3/00G01R25/00G01R19/0084Y04S10/22Y04S40/126Y02E40/70Y02E60/00
Inventor 亢中苗李星南刘新展李伟坚施展朱文红
Owner GUANGDONG POWER GRID CO LTD