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Transformer digital gas protection and oil surge monitoring integrated device and method

A gas protection, digital technology, applied in circuit devices, electrical components, etc., can solve the problems of lack of measurement and analysis of oil flow surging change characteristic information, low protection reliability, affecting the accuracy and sensitivity of action, etc.

Active Publication Date: 2020-10-27
BEIJING ZHONGRUIHE ELECTRICAL
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Problems solved by technology

[0007] Traditional mechanical gas protection uses mechanical structures such as floats, springs, and baffles to sense gas generation and oil flow surges. There are two main problems: First, the spring mechanism can only reflect the flow rate of the oil flow. Once it exceeds the preset threshold The trip signal is issued without measuring and analyzing the characteristic information of the oil flow surge change, so the protection reliability is low; second, the mechanical structure is soaked in the insulating oil for a long time, and the sludge generated by the shedding of oxides and the deterioration of the insulating oil will adhere to the On mechanical components such as relay baffles, floats or springs, it seriously affects the accuracy and sensitivity of its actions

Method used

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  • Transformer digital gas protection and oil surge monitoring integrated device and method
  • Transformer digital gas protection and oil surge monitoring integrated device and method
  • Transformer digital gas protection and oil surge monitoring integrated device and method

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Embodiment Construction

[0058] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0059] see figure 1 , Transformer digital gas protection and oil flow surge monitoring integrated device, including: transient oil flow characteristic quantity measurement module, switch value input module, signal conditioning and acquisition module, digital core module, external communication interface module, man-machine dialogue module, switch output module and data storage module. Among them, the transient oil flow characteristic measurement module is connected with the signal conditioning and acquisition module, the signal conditioning and acquisition module, the switch output module, the external communication interface module, the man-machine dialogue module, the switch output module and the data storage module are all connected with the digital The core modules are connected;

[0060] The transient oil flow characteristic measurement module is composed of a...

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Abstract

A transformer digital gas protection and oil flow surge monitoring integrated device and method. The device comprises: a transient oil flow characteristic quantity measurement module, a switching value input module, a signal conditioning and acquisition module, and a digital core module, wherein the transient oil flow characteristic quantity measurement module is connected to the signal conditioning and acquisition module, and the signal conditioning and acquisition module and a switching value output module are connected to the digital core module.

Description

technical field [0001] The invention belongs to the field of power systems, and relates to a transformer digital gas protection and oil flow surge monitoring integrated device and method, which are used for reliable, fast and sensitive identification of internal faults in oil tanks of oil-immersed power transformers. Background technique [0002] As a key main power equipment, the transformer occupies a pivotal position in the power system, and its stable operation is an important prerequisite to ensure the reliable transmission, flexible distribution and safe use of electric energy in the entire power system. When an internal fault occurs in the transformer, if the relay protection device refuses to operate or cannot act in time, the transformer body may be damaged due to the pressure impact of the internal fault, and even cause an explosion or fire accident; In case of misoperation, the economic losses caused by power outages will be inevitable. Especially for high-voltag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00
CPCH02J13/0062
Inventor 闫晨光朱述友周贤罗宝锋张保会高琰徐雅周贤武
Owner BEIJING ZHONGRUIHE ELECTRICAL
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