CN102103109A - System for monitoring trace moisture content in transformer oil on line - Google Patents
System for monitoring trace moisture content in transformer oil on line Download PDFInfo
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- CN102103109A CN102103109A CN2009102013378A CN200910201337A CN102103109A CN 102103109 A CN102103109 A CN 102103109A CN 2009102013378 A CN2009102013378 A CN 2009102013378A CN 200910201337 A CN200910201337 A CN 200910201337A CN 102103109 A CN102103109 A CN 102103109A
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- transformer oil
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- moisture content
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- temperature sensor
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Abstract
The invention discloses a system for monitoring trace moisture content in transformer oil on line, belongs to the technical field of monitoring of transformers, and relates to a system for monitoring a moisture change state in the transformer oil on line. The system for monitoring the trace moisture content in the transformer oil on line comprises a humidity sensor, a temperature sensor, a signal processing unit and a client monitor terminal, wherein the humidity sensor is an aluminum oxide humidity sensor; the temperature sensor is a polyimide capacitive temperature sensor; the signal processing unit comprises a capacitance detector which consists of two electrodes; variation of an electric signal acquired by the sensor is converted into a moisture content value through the signal processing unit and then enters the client monitor terminal; and the client monitor terminal is provided with trace moisture fault diagnosis software to examine moisture content and oil temperatures in the monitored transformer oil. The system for monitoring the trace moisture content on line has stable and reliable performance, is convenient to operate and can accurately and continuously measure the moisture content in the transformer oil.
Description
Technical field
The present invention relates to a kind of utility appliance of power equipment, especially relate to the on-line monitoring system of micro-water content in a kind of transformer oil.
Background technology
Enlarging day by day of structure and improving constantly of voltage apparatus grade along with power industry, the maintenance of transformer is more and more important, and wherein the moisture monitoring in the transformer oil become transformer safeguard in a very heavy part, water cut in the oil has decisive action in essence in the safe operation of transformer, the content of moisture plays decisive influence to the insulativity of transformer oil, too much water cut will speed up the aging of insulating material in the oil, and reduction insulativity, and then cause the instability and the potential danger of equipment operation, can cause coil to produce arc ring and short circuit phenomenon when water content is big, even can blast in some cases etc.According to GB50150-2006 " Erection works of electrical installations Standard for handover test of electric equipment ", the monitoring of minor amount of water must meet certain regulation in the oil.Micro-water content in the offline inspection insulating oil of laboratory, complicated operation is wayward, and especially oil and water separation link realizes that difficulty is big, and from getting oil to the complicated cost height of testing process, real-time is poor to the laboratory distance for transformer simultaneously; Online little water monitoring is effectively replenishing of the little water monitoring in laboratory and perfect.
Application number be CN200820056711 patent disclosure be used for the injector of transformer oil determination of moisture in a kind of gas chromatograph, this kind detection method is highly sensitive, interference is little, but operation is complicated, general technician be difficult to hold and equipment requirements higher.The present invention is by providing a kind of on-line monitoring system with humidity sensor and temperature sensor, realized simple and efficient to handle, accurately and the purpose of continuous monitoring transformer running status.
Summary of the invention
The invention provides a kind of on-line monitoring system that is used for the transformer oil micro-water content, it comprises humidity sensor, temperature sensor, signal processing unit, client's monitoring terminal.
Wherein, described humidity sensor is the aluminium oxide humidity sensor; Described temperature sensor is the polyimide capacitive temperature sensor; Comprise the capacitance probe of forming by two electrodes in the described signal processing unit; The electrolyte that two electrodes of described capacitance probe are made with the polymkeric substance of moisture absorption separates; Described client's monitoring terminal is equipped with the micro-moisture fault diagnosis software.
The present invention has reached easy and simple to handle by the micro-water content in the on-line monitoring transformer oil, and the monitoring precision height guarantees the transformer purpose of safe operation.
Description of drawings
Fig. 1 is the device connection diagram of the on-line monitoring system of micro-water content in the transformer oil of the present invention.
Embodiment
As shown in Figure 1, be the device connection diagram that is used for the little water on-line monitoring system of transformer oil of the present invention.The invention provides the on-line monitoring system of micro-water content in a kind of transformer oil, it comprises humidity sensor, temperature sensor, signal processing unit, client's monitoring terminal.
Wherein, described humidity sensor is the aluminium oxide humidity sensor; Described temperature sensor is the polyimide capacitive temperature sensor; Comprise the capacitance probe of forming by two electrodes in the described signal processing unit; The electrolyte that two electrodes of described capacitance probe are made with the polymkeric substance of moisture absorption separates; Described client's monitoring terminal is equipped with the micro-moisture fault diagnosis software.
On-the-spot in monitoring, because the oil temperature of transformer can produce considerable influence to the monitoring result of humidity sensor, micro-water content in certain time monitoring transformer oil is as the criterion, Kapton capacitive temperature sensor monitoring probe and aluminium oxide humidity sensor monitoring probe are placed the mobile oil circuit of transformer simultaneously, collecting temperature and moisture signal, the variation entering signal processing unit of the electric signal that is collected, after being converted to corresponding moisture, capacitance probe enters client's monitoring terminal, client's monitoring terminal is equipped with the micro-moisture fault diagnosis software, check moisture and oil temperature in the transformer oil of being monitored, and, judge whether to produce the fault that relevant therewith fault or prediction will take place according to the transformer water content in oil.
Embodiment among the present invention only is used for that the present invention will be described, does not constitute the restriction to the claim scope, and other substituting of being equal in fact that those skilled in that art can expect are all in protection domain of the present invention.
Claims (6)
1. the on-line monitoring system that is used for the transformer oil micro-water content is characterized in that comprising humidity sensor, temperature sensor, signal processing unit, client's monitoring terminal.
2. the on-line monitoring system that is used for the transformer oil micro-water content as claimed in claim 1 is characterized in that, described humidity sensor is the aluminium oxide humidity sensor.
3. the on-line monitoring system that is used for the transformer oil micro-water content as claimed in claim 1 is characterized in that, described temperature sensor is the polyimide capacitive temperature sensor.
4. the on-line monitoring system that is used for the transformer oil micro-water content as claimed in claim 1 is characterized in that, comprises the capacitance probe of being made up of two electrodes in the described signal processing unit.
5. the on-line monitoring system that is used for the transformer oil micro-water content as claimed in claim 4 is characterized in that, the electrolyte that two electrodes of described capacitance probe are made with the polymkeric substance of moisture absorption separates.
6. the on-line monitoring system that is used for the transformer oil micro-water content as claimed in claim 1 is characterized in that, described client's monitoring terminal is equipped with the micro-moisture fault diagnosis software.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102013378A CN102103109A (en) | 2009-12-17 | 2009-12-17 | System for monitoring trace moisture content in transformer oil on line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102013378A CN102103109A (en) | 2009-12-17 | 2009-12-17 | System for monitoring trace moisture content in transformer oil on line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102103109A true CN102103109A (en) | 2011-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102013378A Pending CN102103109A (en) | 2009-12-17 | 2009-12-17 | System for monitoring trace moisture content in transformer oil on line |
Country Status (1)
| Country | Link |
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| CN (1) | CN102103109A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531332A (en) * | 2013-10-29 | 2014-01-22 | 国家电网公司 | Intelligent transformer detection and pollutant-discharging device |
| CN104374421A (en) * | 2013-08-16 | 2015-02-25 | 深圳市深安旭传感技术有限公司 | Transducer for measuring tiny water in oil and method for on-line real-time monitoring of temperature and humidity in oil |
| RU2782973C1 (en) * | 2022-02-21 | 2022-11-08 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный энергетический университет" | Method for determining moisture content of transformer oils by nuclear magnetic resonance method with selective pulses |
-
2009
- 2009-12-17 CN CN2009102013378A patent/CN102103109A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374421A (en) * | 2013-08-16 | 2015-02-25 | 深圳市深安旭传感技术有限公司 | Transducer for measuring tiny water in oil and method for on-line real-time monitoring of temperature and humidity in oil |
| CN103531332A (en) * | 2013-10-29 | 2014-01-22 | 国家电网公司 | Intelligent transformer detection and pollutant-discharging device |
| CN103531332B (en) * | 2013-10-29 | 2015-12-30 | 国家电网公司 | A kind of intelligent transformer detects blowdown apparatus |
| RU2782973C1 (en) * | 2022-02-21 | 2022-11-08 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный энергетический университет" | Method for determining moisture content of transformer oils by nuclear magnetic resonance method with selective pulses |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20110622 |