Automatic bus transfer equipment and method applicable to double-bus connection

A technology of backup self-switching and double busbars, which is applied in the field of substations, can solve problems such as long power outages, and achieve the effect of reducing power outage losses, reducing power outage time, and reducing the time for operation and inspection

Inactive Publication Date: 2016-03-02
内蒙古电力勘测设计院有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing technology, the 110kV substation with double busbar connection is generally not equipped with an automatic switching device. When one of the operating lines fails and loses power, the operator manually operates the backup power supply, resulting in a longer power outage

Method used

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  • Automatic bus transfer equipment and method applicable to double-bus connection
  • Automatic bus transfer equipment and method applicable to double-bus connection
  • Automatic bus transfer equipment and method applicable to double-bus connection

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Embodiment Construction

[0016] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, which are only used to explain the present invention and are not to be construed as limiting the present invention.

[0017] For the 110kV substation with double busbar connection, under the condition that there are only two 110kV lines supplying power and parallel operation is not allowed, the standby automatic switching of double busbar connection of the present invention includes the following two basic types: (1) When one line is running, the bus When the connected circuit breaker is in the closing position and one line is spared, it can ensure that the standby line is put into operation in a short time in the event of a fault in the operating line, reducing the power outage time of the substation and reducing power outage losses; (2) when Two lines are running, each with a section of bus, and the bus tie circuit breaker is in the open positio...

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Abstract

The invention provides automatic bus transfer equipment and method applicable to double-bus connection. The automatic bus transfer equipment at least comprises two power supply circuits that are standby to each other; a power supply circuit I is connected with a bus I and a bus II separately at least through a first circuit breaker; a power supply circuit II is connected with the bus I and the bus II separately at least through a second circuit breaker; and the equipment further comprises a current voltage return circuit, an input circuit and an output circuit. The automatic bus transfer equipment is applicable to the 110kv transformer substation with double-bus connection; and the standby power supply can be rapidly put into operation through the automatic bus transfer equipment, so that the outage time of the transformer substation can be reduced, and the outage cost is lowered.

Description

technical field [0001] The invention relates to the technical field of substations, in particular to a backup self-switching device and method suitable for double-bus connection. Background technique [0002] In the existing technology, the 110kV substation with dual busbar connection is generally not equipped with automatic switching device. When one of the operating lines fails and loses power, the operator manually operates the backup power supply, resulting in a long power outage. Contents of the invention [0003] The technical problem to be solved by the present invention is to propose a method and device for standby self-injection suitable for double-bus connection in view of the shortcomings of the prior art. For a 110kV substation with double busbar connection, only two 110 lines supply power and parallel operation is not allowed. Reduce substation power outage time and reduce power outage losses. [0004] The backup self-injection device for double-bus connecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/02
Inventor 赵丽君张瑞春刘晓明张众唐剑菅晓清李军李莉美
Owner 内蒙古电力勘测设计院有限责任公司
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