Oil flow rate online monitoring device and method for gas relay

A technology of monitoring devices and relays, applied to measuring devices, instruments, measuring electricity, etc., to achieve the effects of reducing power accidents, convenient operation, and simple devices

Active Publication Date: 2017-09-08
HUIZHOU POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the setting value of the gas relay often depends on the experience of power grid operation, whether the gas setting value is reasonable, and the specific reasons for the main transformer malfunction have no corresponding data support

Method used

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  • Oil flow rate online monitoring device and method for gas relay

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1Shown is the first embodiment of the gas relay oil flow rate online monitoring device and method, including a single-phase autotransformer body 1, the gas relay 3 and the main transformer common control box 6, the gas relay oil flow rate online monitoring device also includes a pressure The acquisition module 2, the oil flow velocity acquisition module 4, the data receiving module and the control discrimination module, the pressure acquisition module 2, the oil flow velocity acquisition module 4 and the data receiving module are connected by communication, and the data receiving module and the control discrimination module are connected by communication Communication connection, the first signal collected by the pressure collection module 2 and the second signal collected by the oil flow velocity collection module 4 are transmitted wirelessly to the data receiving module, and the third signal received by the data receiving module is uploaded to the contro...

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Abstract

The invention relates to the technical field of gas relay detection and more specifically relates to an oil flow rate online monitoring device and method for a gas relay. The device includes an oil flow rate collecting module, a pressure collecting module, a data receiving module and a control judgment module. Signals collected by the pressure collecting module and the oil flow rate collecting module are transmitted to the data receiving module through wireless transmission and are then uploaded to the control judgment module through a main transformer public control box. According to the invention, real time monitoring can be performed on pressure, oil flow rate, three-side current and zero sequence current during a working process of a single-phase self-coupling voltage transformer and data can be transmitted to a monitoring background. Background monitoring workers can judge whether the voltage transformer breaks down or not according to the collected pressure, oil flow rate, three-side current and zero-sequence current and can check whether a gas setting value is reasonable or not when meeting current surges. The device is simple and is convenient to operate. Electricity accidents can be reduced substantially and good social benefits are brought.

Description

technical field [0001] The invention relates to the technical field of gas relay detection, and more specifically, to an online monitoring device and method for gas relay oil flow velocity. Background technique [0002] In the power system, the transformer is an extremely important power equipment, and the oil-immersed transformer is the most widely used in the power system of our country. When the transformer has a ground fault or is struck by lightning outside the area, load current and fault short-circuit current flow through the transformer; The changing current changes abruptly. When the current flowing through the transformer changes suddenly, the oil flow rate inside the transformer will increase. The gas relay is used as a protection device for the transformer. When the oil flow rate reaches the heavy gas setting value of the gas relay, the contact of the gas relay is activated, the designated control circuit is connected, and a signal alarm (light gas) is issued i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01L19/00
CPCG01L19/00G01L19/0092G01R31/00G01L2019/0053
Inventor 李柯睿郭佳才黎舟洋蔡素雄黄志赖昱光叶欢欢李冠桥罗斐卓定明陈泽灵纪经涛高士森
Owner HUIZHOU POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CO LTD
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