On-line replacement system and method for voltage regulation switch oil of transformer

Abstract

The invention relates to a transformer pressure regulating switch oil on-line replacement system and method.The transformer pressure regulating switch oil on-line replacement system comprises an oil tank, an oil bag, an oil tank oil drain pump, an oil bag oil inlet pump, a weighing device and a control device, the oil bag is installed in the oil tank, and the oil bag and the oil tank are connected with a transformer pressure regulating switch through a first pipeline and a second pipeline respectively; the oil bag oil inlet pump and the oil tank oil drain pump are installed on the first pipeline and the second pipeline respectively and used for injecting waste oil in the transformer pressure regulating switch into the oil bag and injecting qualified oil in the oil tank into the transformer pressure regulating switch respectively, the oil tank oil drain pump is connected with the control device, and the control device comprises a weighing device. And the sensor is used for sending a measured weight signal to the control device, and the control device controls the flow of the oil tank oil drain pump, so that the difference value between the real-time weight of the oil tank and the initial weight of the oil tank is smaller than a preset threshold value, and the transformer voltage regulating switch oil is replaced.

Description

technical field [0001] The invention relates to the technical field of transformer voltage regulating switch oil replacement, in particular to an on-line replacement system and method for oil shut-off of a transformer voltage regulating card. Background technique [0002] The transformer voltage regulating switch is the key equipment in the power substation system, also known as the on-load tap-changer. Its reliability is directly related to the safe and stable operation of the power system. The failure of the transformer voltage regulating switch is often due to the long-term operation of the transformer voltage regulating switch. Under the action of the long-term working voltage, the insulating oil inside the transformer voltage regulating switch will gradually age. It is caused by the deterioration of the insulating oil inside the transformer voltage regulating switch, and the specific reasons are as follows: First, the insulating oil inside the transformer voltage regula...

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Problems solved by technology

[0005] Based on this, the present invention discloses an online insulating oil replacement system and method, which can replace the deteriorated insulating oil inside the transformer voltage regulating switch when the transformer voltage regulating switch is live, so as to solve the problems that need to be carried during the replacement process. A lot of equipment and complicated operation

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