Converter transformer body and oil conservator accident oil discharge system

Abstract

The invention relates to the technical field of converter transformer safety, and especially relates to a converter transformer body and oil conservator accident oil drainage system. The system comprises an oil conservator, a cutoff module, an oil conservator oil discharge pipeline, a remote control automatic oil discharge module and a transformer body oil discharge pipeline, the bottom connecting pipe of the oil conservator is connected with one interface of the cutoff module and the oil conservator oil discharge pipeline, and the other interface of the cutoff module is connected with a transformer main connection air pipe; and the remote control automatic oil discharge module is provided with an oil conservator oil inlet, a transformer main body oil inlet and an oil discharge port, the oil conservator oil inlet is connected with the tail end of the oil conservator oil discharge pipeline, and the transformer body oil inlet is connected with the converter transformer body oil discharge port through the transformer body oil discharge pipeline. According to the invention, the converter transformer can be installed without exiting from the power grid operation state, automatic oil discharge of the body and the oil conservator can be realized, the system structure is simple, the operation steps are simple, and the labor cost is saved.

Description

technical field [0001] The invention relates to the technical field of converter transformer safety, in particular to an emergency oil discharge system for a converter transformer main body and an oil storage tank. Background technique [0002] At present, the converter transformer is one of the important equipment in the HVDC power transmission system. It is usually connected with the converter valve to form a converter unit to realize the mutual conversion of AC and DC, and realize the mutual electrical isolation of AC and DC. The converter transformers that are mainly operated on the grid in China are divided into two types: ABB structure and Siemens structure, both of which are oil-immersed transformers. Once a failure occurs, it is easy to cause fire and explosion. The existence of a large amount of transformer oil in the box may cause the fire to spread uncontrollably. Even damage the converter valve. The oil drain valve provided on the main body of the converter tran...

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Problems solved by technology

[0003] In view of the above problems, the purpose of the present invention is to provide a converter transformer main body and an emergency oil discharge system for an oil conservator to solve the problem of the low-end ABB structure converter transformer running on the grid in the prior art. The oil drain valve installed on the transformer body needs to be manually opened on site, which is too dangerous

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