110kV tie line relay protection setting value execution checking method and device and terminal

Abstract

The embodiment of the invention discloses a 110kV tie line relay protection setting value execution checking method and device and a terminal. The method comprises the following steps: reading a 110kV tie line operation mode and a protection information database; traversing to obtain switch positions and active power values on two sides of each 110kV tie line circuit, and judging a circuit operation mode; according to the line operation mode, retrieving a protection constant value order number corresponding to the line operation mode in a power grid protection constant value table database as a protection mode constant value; retrieving an operation record of an execution protection constant value order number of a corresponding line in an electronic command database as an execution constant value; and comparing whether the constant value order numbers of the protection mode constant value and the execution constant value field are consistent or not. According to the embodiment of the invention, the operation condition of the power grid equipment is automatically judged and monitored by using the data of a network command issuing system, a dispatching automation system and the like, so that a dispatcher can better monitor the operation condition of the power grid and control the operation condition of the power grid, and the potential safety hazard of power grid operation is reduced.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of electric power system dispatching, and in particular to a method, device and terminal for checking the fixed value of 110kV tie line relay protection. Background technique [0002] The traditional dispatching operation mode is that the dispatcher writes the dispatching operation ticket, and orders the substation personnel to perform related primary and secondary equipment operations by phone. When the dispatcher implements line maintenance or accident handling, the operation mode of the 110kV tie line may change accordingly. At this time, if the dispatcher misses to modify the corresponding relay protection setting value, it may cause protection mismatch, which will bury the hidden danger of leapfrog tripping or misoperation in the event of a fault, and expand the scope of the accident. In addition, when a permanent line failure occurs in the power grid, and the remote backup and...

AI Technical Summary

Problems solved by technology

[0002] The traditional dispatching operation mode is that the dispatcher writes the dispatching operation ticket, and orders the substation personnel to perform related primary and secondary equipment operations by phone. When the dispatcher implements line maintenance or accident handling, the operation mode of the 110kV tie line may change accordingly. At this time, if the dispatcher misses to modify the corresponding relay protection setting value, it may cause protection mismatch, which will bury the hidden danger of leapfrog tripping or misoperation when the fault occurs, and expand the scope of the accident.

In addition, when a permanent line failure occurs in the power grid, and the remote backup and automatic switching of the power grid transfers multiple substations powered in series to another backup power supply, the relevant local power grid mode changes. If the dispatcher does not realize this when handling the accident Changing and adjusting the protection setting of related equipment will cause long-term adaptation of the protection, and there is also the risk of protection refusal

Therefore, the existing 110kV tie line relay protection fixed value execution check method only relies on the dispatcher to manually analyze and check, there may be analysis errors or omissions, and there are certain potential safety hazards

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