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Method and device for locating vulnerable node in power grid, storage medium and electronic device

A positioning method and technology for positioning devices, which are applied in circuit devices, harmonic reduction devices, electrical components, etc., can solve problems such as difficulty in positioning vulnerable nodes in the power grid.

Active Publication Date: 2018-12-07
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a method, device, storage medium and electronic equipment for locating vulnerable nodes in a power grid, so as to solve the problem in the prior art that it is difficult to locate vulnerable nodes in the power grid when multi-harmonic sources act together
Through the above steps, the influence of each harmonic source on each node in the power grid is considered, which is conducive to quickly searching and completing the nodes that are sensitive to the influence of harmonics in the power grid, which is of great significance for the effective management of harmonics. In the prior art, it is difficult to locate the vulnerable nodes in the power grid when multiple harmonic sources act together

Method used

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  • Method and device for locating vulnerable node in power grid, storage medium and electronic device
  • Method and device for locating vulnerable node in power grid, storage medium and electronic device

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Embodiment 1

[0027] An embodiment of the present invention provides a method for locating vulnerable nodes of a power grid, figure 1 is a flow chart of a method for locating vulnerable nodes of a power grid according to an embodiment of the present invention, such as figure 1 As shown, the location method of vulnerable nodes in the power grid includes:

[0028] Step S101: Calculate the mutual impedance between each node in the grid and each harmonic source node; specifically, for the grid where multiple harmonic sources are located, the mutual impedance between each node in the grid and each harmonic source node is respectively Calculated.

[0029] Step S102: acquiring the current amplitude of each harmonic source; specifically, the current amplitude of each harmonic source may be acquired through measurement.

[0030] Step S103: According to the current amplitude and mutual impedance, obtain the harmonic voltage generated by each node in the power grid; according to the collected curren...

Embodiment 2

[0063] An embodiment of the present invention provides a device for locating a vulnerable node of a power grid. The device is used to implement the above embodiments and preferred implementation modes, and what has been described will not be repeated. As used below, the term "module" may be a combination of software and / or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

[0064] An embodiment of the present invention provides a positioning device for vulnerable nodes in a power grid, including a calculation module 41 for calculating the mutual impedance between each node in the power grid and each harmonic source node; an acquisition module 42 for obtaining the mutual impedance of each harmonic source Current amplitude; the first processing module 43 is used to obtain the ...

Embodiment 3

[0068] The embodiment of the present invention also provides a computer-readable storage medium, where the computer-executable instruction is stored in the computer-executable instruction, and the computer-executable instruction can execute the method for locating vulnerable nodes of the power grid in any method embodiment above. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a flash memory (Flash Memory), a hard disk (Hard Disk Drive, abbreviation: HDD) or a solid-state drive (Solid-State Drive, SSD), etc.; the storage medium may also include a combination of the above-mentioned types of memory.

[0069] Figure 5 is a schematic diagram of the hardware structure of an electronic device according to a method for locating vulnerable nodes in a power grid according to an embodiment of the present invention, as shown in Figure 5 As shown, the device includes one...

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Abstract

The invention provides a method and device for locating a vulnerable node in a power grid, a storage medium and an electronic device, wherein the method comprises calculating the mutual impedance between each node in the power grid and a harmonic source node; obtaining the current amplitude value of each harmonic source; obtaining the harmonic voltage generated by each node in the power grid according to the current amplitude values and the mutual impedance; and determining a node corresponding to the maximum value of the harmonic voltage as the vulnerable node of the power grid. The method for locating the vulnerable node in the power grid takes account of the influence of each harmonic source on each node in the power grid, is beneficial to quickly searching out the node sensitive to theinfluence of harmonics in the power grid, has great significance for treating the harmonics, and solves the problem in the prior art that the vulnerable node in the power grid is difficult to locatewhen multiple harmonic sources function together.

Description

technical field [0001] The invention relates to the technical field of power grid evaluation, in particular to a method, device, storage medium and electronic equipment for locating vulnerable nodes of a power grid. Background technique [0002] With the development of distributed new energy and a large number of applications of various power electronic equipment in the power grid, the problem of harmonic pollution in the power grid is becoming more and more prominent. The current relevant standards focus on making requirements for the harmonic content of the node voltage in the power grid, and the harmonic content of the node voltage is essentially the reflection of the joint action of all harmonic current sources in the power grid on this node. Therefore, for multi-harmonic It is particularly difficult to analyze the voltage harmonic content of some nodes in the power grid under the combined action of wave sources. In principle, it is necessary to analyze and calculate the...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/01G06Q10/06G06Q50/06
CPCG06Q10/0639G06Q50/06H02J3/00H02J3/01H02J2203/20Y02E40/40
Inventor 王同勋周胜军赵国亮张文朝李亚琼
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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