Installation method of accident oil discharge device of high-end converter transformer

Abstract

The invention relates to the technical field of converter transformer safety, and especially relates to an installation method of a high-end converter transformer accident oil discharge device. The installation method comprises the following steps: (1) powering off the converter transformer, staying is in a shutdown maintenance state, and additionally arranging an oil storage pool for storing transformer oil discharged after an accident happens; 2) discharging the transformer oil in the oil conservator; 3) installing an oil discharge pipeline and a cutoff module of the oil conservator; 4) installing a remote control automatic oil discharge module; 5) installing a main body oil discharge pipeline and a cooler oil discharge pipeline; 6) mounting an oil unloading pipeline; 7) vacuumizing the oil conservator oil discharge pipeline, the main body oil discharge pipeline and the cooler oil discharge pipeline; and 8) performing oil injection treatment on the oil conservator oil discharge pipeline, the main body oil discharge pipeline and the cooler oil discharge pipeline, and supplementing oil to the oil conservator. According to the invention, the process of additionally arranging the oil discharge device under the condition that the converter transformer does not quit power grid operation is realized, and extra huge economic loss is not caused.

Description

technical field [0001] The invention relates to the technical field of converter transformer safety, in particular to an installation method of a high-end converter transformer accident oil discharge device. 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 transformer is an oil-immersed transformer. Once a fault 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, and even damage the converter valve. The oil drain valve provided on the main body of the converter transformer oil tank needs to be manually operated, and personnel cannot approach it in case of a fire. At present, the converter tran...

AI Technical Summary

Problems solved by technology

The converter transformer is an oil-immersed transformer. 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, and even damage the converter valve.

The oil drain valve set on the main body of the converter transformer oil tank needs to be manually operated, and personnel cannot approach it in the event of a fire

At present, the converter transformers running online are generally not equipped with remote automatic oil discharge devices, so once a fire occurs, the loss will be very large. What is more important is how to install the oil discharge device on the converter transformer body of the existing converter station and carry out corresponding measures. Process treatment

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