Matrix locking method of spare power automatic switching device

Abstract

The invention relates to a matrix locking method of a spare power automatic switching device. The method comprises the following steps of: inputting all quantities of spare power automatic switching actions to be locked, which serve as inputs, to the spare power automatic switching device, and defining the inputs as an input matrix K; setting a locking control word matrix A; when the spare power automatic switching device operates, performing operation according to the original logic of the spare power automatic switching actions until the spare power automatic switching actions are performed; if the actions are required, determining an action mode to be operated, and if a k-th spare power automatic switching mode is operated, taking out a k-th line from the matrix A; multiplying the k-th line matrix in the input matrix K by the k-th line matrix in the locking control word matrix A; and if a result D is equal to zero, not locking, and if D is not equal to zero, locking the spare power automatic switching actions. By adoption of the method, the main logic of the original spare power automatic switching actions can be unchanged, after various protection devices act, the logic of a specific spare power automatic switching action mode can be locked as required, and the working efficiency of spare power automatic switching construction and debugging can be improved.

Description

technical field [0001] The invention relates to a control technology of a power transmission and distribution system, in particular to a matrix locking method of a standby automatic switching device for controlling a backup power automatic switching device. Background technique [0002] With the development of the economy, the power grid has higher and higher requirements for the reliability of power supply. The backup power automatic input device (abbreviated as standby automatic input device) can not only increase the reliability of power supply, but also reduce the scope of power failure and ensure the continuity of power supply. Therefore, after new construction or comprehensive automation transformation, 110kV substations are equipped with standby automatic switching devices. However, to ensure the correct and safe operation of the standby automatic switch, the action logic of the standby automatic switch in case of a fault at the lower level must be considered. At pre...

AI Technical Summary

Problems solved by technology

[0007] (1) Due to different designs and different manufacturers' equipment, the backup and automatic switching logic of each substation is not the same. When checking and accepting, it needs to be verified one by one according to the on-site drawings, and the work efficiency is low

[0008] (2) If logic problems are found during the acceptance, the wiring needs to be changed, the workload is heavy, there are many dangerous sources during the reconstruction and expansion construction, and the reconstruction wiring is not beautiful enough

[0009] (3) The wiring is complex, multiple protective action outlets need to be connected in parallel, there are many jumpers between the screen cabinets, and the construction is complicated

[0011] (1) Manufacturers have different designs, which is not conducive to unified management within the company

[0012] (2) All input is used as the basis for judgment, and the logic of the automatic switching operation needs to be rewritten, which requires a lot of work

Judgment logic is too complicated, which affects operation and maintenance personnel's familiarity with device characteristics

[0013] (3) The solidified program has poor adaptability. When encountering special requirements for equipment or operation mode, the program needs to be modified, which is not very practical

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