Power system broken line impedance scanning method and device

A technology of power system and scanning method, which is applied in the direction of measuring resistance/reactance/impedance, measuring devices, measuring electrical variables, etc., can solve problems such as low efficiency, achieve fast acquisition, and improve the effect of computing speed

Active Publication Date: 2018-02-27
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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Problems solved by technology

[0005] Based on this, it is necessary to provide a power system disconnection impedance scanning method

Method used

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  • Power system broken line impedance scanning method and device
  • Power system broken line impedance scanning method and device
  • Power system broken line impedance scanning method and device

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] see figure 1 , figure 1 It is a flow chart of the power system disconnection impedance scanning method, and the power system disconnection impedance scanning method of the present invention includes the following steps:

[0027] S101. Obtain line information of the power system network, obtain node information of each node in the power system network according to the line information, and calculate a node admittance matrix of the power system network according to the node information.

[0028] In the above steps, the line information may be related information of all lines in a power syste...

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Abstract

The invention relates to a power system broken line impedance scanning method and device. The method comprises the following steps that line information of a power system network is obtained, node information of all nodes in the power system network is obtained according to the line information, and a node admittance matrix of the power system network is calculated according to the node information; target lines, meeting preset constraint conditions, in lines of the power system network are determined, and parameter information of all the target lines is obtained; broken line impedance computing tasks of all the target lines are generated according to the parameter information of all the target lines and the node admittance matrix, and the tasks are mapped to corresponding threads of a graphics processor; in all the threads of the graphics processor, broken line impedance of all the target lines is obtained through parallel computing. According to the technical scheme, when broken lineimpedance scanning of the multiple target lines and particularly large power network lines complex in structure is conducted, the operating rate can be significantly increased, and the broken line impedance of the target lines of the power system network is obtained rapidly.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a method and device for scanning impedance of broken wires in a power system. Background technique [0002] In recent years, as the requirements for power system operation have become more and more refined, real-time analysis and online verification of power systems have become particularly important, so the requirements for the speed of analyzing power systems have also become higher and higher. Disconnection impedance scanning is the premise of electrical equipment selection and electrical protection setting calculation, and is an important basis for power system planning, design and operation. [0003] With the development of the power system and the expansion of networking, the scale of the power system network is getting larger and larger, and the calculation load of the disconnection impedance scanning is increasing. Improving the calculation speed of the broken line...

Claims

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Application Information

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IPC IPC(8): G01R27/04
CPCG01R27/04
Inventor 黄冠标
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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