Virtual fault domain-based regional grid traveling wave positioning unit optimal configuration method

A technology of traveling wave positioning and regional power grid, which is applied in the direction of electrical components, circuit devices, emergency protection circuit devices, etc., and can solve problems such as high economic efficiency

Active Publication Date: 2019-11-08
CHINA THREE GORGES UNIV
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Problems solved by technology

[0003] In order to solve the above problems, some innovative achievements have appeared in the prior art (Xue Xue; Xu Cheng; Feng Xin; Wang Yongsheng; Fu Guoqing; Liang Rui; Li Hai Hai. A TWR optimal configuration method for down-traveling wave ranging in complex power grids: Chinese Invention Patent, 201410683177.6[P]. , the problem of high economic efficiency is still unavoidable

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  • Virtual fault domain-based regional grid traveling wave positioning unit optimal configuration method
  • Virtual fault domain-based regional grid traveling wave positioning unit optimal configuration method
  • Virtual fault domain-based regional grid traveling wave positioning unit optimal configuration method

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Embodiment

[0071] A method for optimal configuration of traveling wave location units in regional power grids based on virtual fault domains, specifically comprising the following steps:

[0072] Step 1: Consider other mandatory factors such as installed positioning unit, device failure or line out of operation, and add equality constraints. Such as figure 2 As shown in the 500kV regional power grid structure diagram, the grid node S6 has been configured with a positioning unit. So the equality constraint X 6 =1.

[0073] Step 2: Since the initial wave head of the fault is affected by the shortest path of the network, the optimization of the system's traveling wave location unit layout is related to the network topology. The adjacency matrix A is defined to represent the topology of the regional power grid, and based on this, the division rules of three virtual fault domain modes and the corresponding configuration rules of traveling wave location units are proposed.

[0074] 1) For ...

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Abstract

The invention discloses a virtual fault domain-based regional grid traveling wave positioning unit optimal configuration method. By analyzing measurability of a power line, in view of three virtual fault domain modes, the method proposes virtual fault domain-based traveling wave positioning unit configuration preprocessing equality constraints; the shortest traveling wave transmission path of a fault line is analyzed, and constraints based on line length coverage indirect measurability is proposed. Besides, in consideration of other factors such as the already-installed traveling wave positioning unit configuration condition of the grid, fault of a certain device or operation exiting of a certain line, traveling wave positioning unit distribution optimization is abstracted to a 0-1 planning model with equality constraints and inequalities. On the premise of ensuring that the fault is observable, the method reduces the configuration number of traveling wave positioning units, the investment cost is saved, the number of variables is reduced, the constraint conditions are reduced, the number of algorithm iterations is reduced, and the convergence speed is increased.

Description

technical field [0001] The invention relates to an optimal configuration method for a traveling wave positioning unit of a regional power grid, in particular to an optimal configuration method for a traveling wave positioning unit of a regional power grid based on a virtual fault domain. Background technique [0002] With the rapid development of computer technology and communication technology, the traveling wave positioning unit has already met the networking conditions. The regional grid traveling wave positioning master station is mainly composed of a workstation, a database server, a network server and a communication server. These modules are used to complete the operation and communication of the system. Maintenance, storage of information, network transmission of information, transmission of fault information. The ranging algorithms used by the master station include single-ended traveling wave method, double-ended traveling wave method, and network ranging method ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02H7/26
CPCH02J3/00H02H7/265
Inventor 李振兴李成志程宜兴包文亮翁汉琍李振华黄景光
Owner CHINA THREE GORGES UNIV
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