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Transformer intelligent on-load gas exhaust device

An exhaust device and transformer technology, which is applied to transformer/inductor circuits, valve devices, signal devices, etc., can solve the problems of heavy workload and safety hazards, low degree of automation of gas exhaust operation, etc. Solve the problem of start and stop and ensure the effect of service life

Active Publication Date: 2022-07-05
XINZHOU POWER SUPPLY COMPANY STATE GRID SHANXI ELECTRIC POWER
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Problems solved by technology

[0009] The present invention provides an intelligent on-load gas exhaust device for transformers in order to solve the technical problems that the automation degree of the current transformer gas exhaust operation is low, resulting in heavy workload and potential safety hazards.

Method used

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  • Transformer intelligent on-load gas exhaust device
  • Transformer intelligent on-load gas exhaust device
  • Transformer intelligent on-load gas exhaust device

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Embodiment Construction

[0031] This device is a matching device for Buchholz relay, mainly composed of gas action module (CPU part), gas relay venting module and light gas protection action module (output circuit area):

[0032] 1) According to the reasons for the previous transformer gas action and the structure of the transformer, it can be known that the main transformer body has a small gas generation probability, and the on-load tap-changer operates more frequently, so the exhaust device should try to consider the discharge of on-load gas;

[0033] 2) The exhaust device of the Buchholz relay uses a hard pipeline to connect to the ground for exhaust, and the solenoid valve is oil-resistant;

[0034] 3) The solenoid valve is controlled by the loop to start the exhaust, and the time coordination of the time relay can be used reasonably to ensure the correct discharge;

[0035] 4) By setting the intermediate relay ZJ (K1, K2, K3), the light gas alarm of the original gas relay circuit can be effectiv...

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Abstract

The invention relates to matching equipment for gas exhaust of transformer relays, in particular to an intelligent on-load gas exhaust device for transformers. It solves the technical problems that the current transformer gas exhaust operation has a low degree of automation, resulting in a large workload of personnel and potential safety hazards. An intelligent on-load gas exhaust device for a transformer, comprising a power supply circuit, a CPU, a digital display area, a watchdog circuit, a data storage area, an output circuit area and a signal acquisition circuit; the CPU signal output ends are respectively connected with the digital display area, The watchdog circuit, the data storage area and the output circuit area are connected; the signal input end of the CPU is connected with the signal acquisition circuit. The invention effectively solves the problem of coordination between the light gas device alarm signal and the exhaust device; the original light gas alarm circuit is adopted in the design, and manual and automatic gas discharge functions are set to solve the convenience of gas collection and discharge; The exhaust time, with the normally closed contact of the solenoid valve, solves the problem of start and stop of the solenoid valve.

Description

technical field [0001] The invention relates to matching equipment for gas exhaust of transformer relays, in particular to an intelligent on-load gas exhaust device for transformers. Background technique [0002] As a device connecting different voltage levels of networks, power transformers are an extremely important part of the power system. The corresponding gas protection it is equipped with can effectively respond to the internal faults of the transformer, and is the most commonly used method in transformer protection measures. In recent years, with the continuous expansion of the scale of the power system and the improvement of the voltage level, many large-capacity transformers have been added. Most of the Buchholz relays of the transformers are designed and installed on the upper part of the transformer body, which brings the following problems to the maintenance personnel: [0003] 1.1 Potential safety hazards brought by the transformer exhaust operation. The trans...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B21/16G08B5/36F16K31/06H01F27/42
CPCG08B21/16G08B5/36F16K31/0675H01F27/42
Inventor 李钧张琰武张树峰刘海军
Owner XINZHOU POWER SUPPLY COMPANY STATE GRID SHANXI ELECTRIC POWER
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