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Bus protection voltage judgment method and device in hand-in-hand wiring mode and storage medium

A busbar protection and wiring method technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve problems such as no reliable and effective solutions, location mismatch, etc., to improve power supply quality, high-efficiency switching, and improve grid operation efficiency Effect

Pending Publication Date: 2022-04-22
NARI TECH CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Moreover, in the actual system operation, there may be abnormal working conditions in which the positions of the two incoming lines C1 and C2 are double-position or double-closed. At the same time, there will be a situation where their respective positions do not correspond. At this time, how to choose the busbar protection voltage, the existing technology has not proposed a reliable and effective solution

Method used

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  • Bus protection voltage judgment method and device in hand-in-hand wiring mode and storage medium
  • Bus protection voltage judgment method and device in hand-in-hand wiring mode and storage medium
  • Bus protection voltage judgment method and device in hand-in-hand wiring mode and storage medium

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Embodiment 1

[0058] This embodiment introduces a method for judging the bus protection voltage in the hand-in-hand connection mode.

[0059] refer to figure 1 As shown in the main wiring diagram of the hand-in-hand connection method, each low-voltage side busbar is connected to two high-voltage side busbars through the first incoming line branch and the second incoming line branch. Take the 110kV station C as an example, and then refer to Figure 9 , The first incoming branch of the 110kV bus is equipped with circuit breaker switch C1, current transformer CT1 and voltage transformer PT1, and the second incoming branch is equipped with circuit breaker switch C2, current transformer CT2 and voltage transformer PT2.

[0060] refer to figure 2 , the method for judging the busbar protection voltage in this embodiment includes:

[0061] Obtain the circuit breaker position information of the circuit breaker switches C1 and C2, that is, the external TWJ input information; obtain the current dat...

Embodiment 2

[0088] Based on the same inventive concept as that of Embodiment 1, this embodiment introduces a busbar protection voltage judging device in the hand-in-hand wiring mode, including:

[0089] The data acquisition module is configured to acquire the circuit breaker position information of the circuit breaker switches C1 and C2, the current data of each incoming line branch, and the voltage data of each incoming line branch;

[0090] The protective circuit breaker position judging module is configured to, for C1 and C2, respectively judge the protective circuit breaker positions of C1 and C2 according to the corresponding circuit breaker position information and incoming branch current data;

[0091] The busbar protection voltage selection module is configured to determine the incoming branch circuit voltage that should be selected for busbar protection according to the positions of the protective circuit breakers of C1 and C2 and the current data of each incoming branch circuit; ...

Embodiment 3

[0102] This embodiment introduces a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the method for judging busbar protection in the hand-in-hand connection mode as described in Embodiment 1 is implemented.

[0103] Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

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Abstract

The invention discloses a bus protection voltage judgment method and device in a hand-in-hand wiring mode and a storage medium. The method comprises the steps of obtaining circuit breaker position information of circuit breaker switches C1 and C2 on two incoming line branches, incoming line branch current data and incoming line branch voltage data; according to the corresponding circuit breaker position information and the incoming line branch current data, the positions of the protection circuit breakers C1 and C2 are judged; according to the positions of the protection circuit breakers C1 and C2 and the current data of each incoming line branch, determining the voltage of the incoming line branch which should be selected for bus protection; and based on the acquired incoming line branch voltage data, judging whether the incoming line branch voltage which should be selected for bus protection meets a preset bus protection voltage locking condition, if so, judging that bus protection voltage locking is opened, and if a fault occurs in a bus region, allowing a corresponding bus protection action. According to the invention, the bus protection voltage switching selection logic is optimized, and the reliability of bus voltage protection can be improved.

Description

technical field [0001] The invention relates to the technical field of power system protection and control, in particular to a method, device and storage medium for judging busbar protection voltage in a hand-in-hand connection mode. Background technique [0002] The safe and stable operation of the power system is the basis for ensuring the development of the national economy and society, and with the sustained and rapid economic development, the requirements for the stability of the power system have become increasingly prominent. [0003] The typical hand-in-hand wiring power supply mode is as attached to the manual figure 1 As shown, substations C, D, and E in the figure are also called chain-type structure series supply substations. Taking station C as an example, the series supply circuit composed of C1, C2 and C3 is as follows: figure 2 As shown, a set of busbar protection device is required, the main wiring form is single busbar, and C4, C5 and C6 also need to be e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/22H02H7/26
CPCH02H7/22H02H7/26
Inventor 戴魏王寅丞王鹤鸣吴通华郑玉平朱翔张凯宇常鑫瑞
Owner NARI TECH CO LTD