Safe automatic control method suitable for transforming plant main transformer tripping

Abstract

The invention discloses a safety automatic control method suitable for a main transformer of a transformer station during the tripping process. The method is characterized in that on the transformer stations with three and more running main transformers, the buses at the high-voltage sides of the main transformers run in parallel, and the buses at the middle and low voltage sides of the main transformers run in parallel; after the electrical characteristics of the main transformers and the buses meet the charging conditions of spare power automatic switching, the spare power automatic switching is enabled, and if the main transformers trip at the moment through detection, the spare power automatic switching of the transformer station is realized according to the running modes of the main transformers and the bus-tie circuit breakers or the section switches at the medium-voltage sides or the low-voltage sides of the main transformers; and when the electrical characteristics of the maintransformers and the buses meet the discharging conditions of spare power automatic switching, the spare power automatic switching of the transformer station is locked. The invention has the advantages that the method can effectively solve the problems of capacity release of the main transformers of the transformer station and the reliability of power supply of the transformer station during the process of trip fault of the main transformers.

Description

technical field [0001] The invention belongs to the field of electric power automation technology control, and in particular relates to a safety automatic control method suitable for substations with three or more main transformers running, more specifically, when the main transformer is tripped, it passes through the medium voltage side of the main transformer. Or the low-voltage side bus tie switch or section switch to realize the automatic switching of the power supply. Background technique [0002] With the continuous development of economy and society, users' demand for power is also increasing, and at the same time, the reliability of power supply is also getting higher and higher. Power transmission and distribution capacity. At present, there are generally two options for improving power transmission and distribution capacity: one is to build a new substation, and the other is to add power transmission and distribution equipment to an already operating substation. H...

AI Technical Summary

Problems solved by technology

[0008] Purpose of the present invention: In order to solve the problem of the release of the main transformer capacity of the substation with three or more main transformers and the reliability of the power supply and the safety of the main transformer when the main transformer trips and fails in the substation with three or more transformers overload problem

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