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Method for verifying correctness of decoupling quadrilateral wiring spare power automatic switching operation mode

A technology of operation mode and verification method, applied in the direction of emergency power supply arrangements, electrical components, circuit devices, etc., can solve problems such as uncertainties in the reliable operation of standby automatic switching systems

Inactive Publication Date: 2014-12-31
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The engineering example proves that the backup power automatic switch-on device (referred to as "decoupling" for short) can be simplified as (referred to as "decoupling") consisting of two double-power supply single busbar wiring standby power switch (referred to as "decoupling" Quadrangular wiring for automatic switching), how to verify the correctness of the "decoupling" quadrangular wiring for automatic switching operation mode, the existing control method does not have this process, which brings uncertainty to the reliable operation of the standby automatic switching system

Method used

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  • Method for verifying correctness of decoupling quadrilateral wiring spare power automatic switching operation mode
  • Method for verifying correctness of decoupling quadrilateral wiring spare power automatic switching operation mode
  • Method for verifying correctness of decoupling quadrilateral wiring spare power automatic switching operation mode

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Embodiment

[0028] Such as figure 1 As shown, the primary main wiring of the substation of the power transmission and distribution network applied by the method of the present invention is a standard quadrangular wiring, including two power supplies, and the first circuit breaker QF1 and the second circuit breaker QF1 are respectively connected in series on the two power supplies. The circuit breaker QF2, the third circuit breaker QF3, and the fourth circuit breaker QF4 are also connected to two main transformers (i.e. No. 1 main transformer and No. 2 main transformer), that is, two power supply lines and three step-down main transformers and four circuit breakers, wherein four circuit breakers are located on the four sides of the quadrangular, and two power supply lines and three step-down main transformers are located on the four corners of the quadrangular. The line side of the power incoming line is connected with a voltage transformer.

[0029] Provide the embodiment of the inventiv...

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Abstract

The invention belongs to an electric power transmission and distribution network control technology, and relates to a method for verifying the correctness of a decoupling quadrilateral wiring spare power automatic switching operation mode in a quadrilateral wiring spare power automatic switching system. According to the method, a used power transmission and distribution network is a quadrilateral wiring decoupling spare power automatic switching device which is in a power substation at the voltage grade being 220kV or lower than 220kV and adopts adopting double power supplies for supplying the electricity at the primary main wiring. The primary main wiring of the power substation of the power transmission and distribution network adopted in the method is the standard quadrilateral wiring, and the logical algebraic expression met by the decoupling quadrilateral wiring spare power automatic switching is shown as the accompanying drawing. The method has the advantages that 1, the quadrilateral wiring spare power automatic switching device operation mode is decoupled through logic algebraic checking calculation, and simplicity and clearness are realized; 2, the method of decoupling the quadrilateral wiring spare power automatic switching device operation mode through the logic algebraic checking calculation is convenient to implement and is easy to understand.

Description

technical field [0001] The invention belongs to the control technology of electric power transmission and distribution network, and relates to a method for verifying the correctness of the operation mode of the decoupled quadrangular standby automatic switching system for the quadrangular wiring standby automatic switching system. Background technique [0002] The engineering example proves that the backup power automatic switch-on device (referred to as "decoupling" for short) can be simplified as (referred to as "decoupling") consisting of two double-power supply single-busbar wiring standby power switch (referred to as "decoupling" Quadrangular wiring for automatic switching), how to verify the correctness of the "decoupling" quadrangular wiring for automatic switching operation mode, the existing control method does not have this process, which brings uncertainty to the reliable operation of the standby automatic switching system. Contents of the invention [0003] The...

Claims

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Application Information

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IPC IPC(8): H02J9/06
Inventor 许志龙汤大海
Owner STATE GRID CORP OF CHINA
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