CN103776553A - Transformer or electric reactor oil temperature detecting and simulating device - Google Patents
Transformer or electric reactor oil temperature detecting and simulating device Download PDFInfo
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- CN103776553A CN103776553A CN201410053123.1A CN201410053123A CN103776553A CN 103776553 A CN103776553 A CN 103776553A CN 201410053123 A CN201410053123 A CN 201410053123A CN 103776553 A CN103776553 A CN 103776553A
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Abstract
The invention relates to a transformer or electric reactor oil temperature detecting and simulating device which is characterized by comprising a multifunctional meter (G). A first detecting terminal (G-1) and a third detecting terminal (G-3) of the multifunctional meter (G) are connected with a first output terminal (ZK-1) and a third output terminal (ZK-3) of a function switch (ZK) respectively, and a second detecting terminal (G-2) and a fourth detecting terminal (G-4) of the multifunctional meter (G) are connected with a second output terminal (ZK-2) and a fourth detecting terminal (ZK-4) of the function switch (ZK). Trial proves that after the transformer or electric reactor oil temperature detecting and simulating device is used for carrying out oil temperature detection and defect overcoming on transformers or electric reactors of 220kV or higher-voltage transformer substations, the working efficiency is greatly improved, more importantly, due to the fact that defects are timely overcome, the accuracy of device monitoring is guaranteed, a reliable basis is provided for timely observing faults, and the safety benefits are obvious.
Description
Technical field
The present invention relates to a kind of transformer or reactor oil temperature detects and analogue means.
Background technology
Current most substation transformer is the variation that carrys out temperature of reaction by output 4-20mA electric current or 100-150 Europe resistance.While detecting main-transformer or reactor oil thermometer teletransmission output function when having a power failure, need to check with local monitoring system, because local monitoring system temperature shows certain error, therefore cannot accurately check data.Transformer is in operational process, when appearring in scheduling station and local monitoring system, temperature shows when wrong, due to cannot analog input source, malfunction elimination is difficulty comparatively, in the time checking teletransmission temperature variation, after needing main transformer to have a power failure, the closed system of pressure-type thermometer is put into Portable high temperature stove and progressively heat up, all processes needs 4 hours, very inconvenience.
Summary of the invention
The object of this invention is to provide a kind of transformer or reactor oil temperature and detect and analogue means, can simulate output 4-20mA electric current or 100-200 Europe resistance value signal, thereby increase work efficiency, be convenient to malfunction elimination.
A kind of transformer or reactor oil temperature detect and analogue means, its special feature is: comprise multifunctional meter, the first detection terminal of this multifunctional meter is connected with the first lead-out terminal and the 3rd lead-out terminal of function switch successively with the 3rd detection terminal, and the second detection terminal of this multifunctional meter is connected with the second lead-out terminal and the 4th lead-out terminal of function switch successively with the 4th detection terminal, and the first input end of function switch and the second input terminal are unsettled; Wherein between the 3rd detection terminal of multifunctional meter and the 4th detection terminal, be also parallel with adjustable resistance, and this adjustable resistance is also connected with first method switch; Wherein between the second detection terminal of multifunctional meter and the second lead-out terminal of function switch, be also in series with second method switch, the input end of this second method switch is connected with the second lead-out terminal of function switch, and an output terminal of this second method switch connects the second detection terminal of multifunctional meter by the current source of series connection, the second detection terminal of another output termination multifunctional meter of this second method switch simultaneously.
Wherein current source is output as 4-20mA current signal.
Wherein function switch adopts current system and resistance mode switch, and first method switch adopts resistance output and measures switch, and second method switch adopts electric current output and measures switch.
Through probationary certificate, detect and use after device of the present invention when defect elimination in oil temperature at 220kV and above substation transformer, reactor, not only greatly increase work efficiency, more importantly by eliminating in time defect, guarantee the accuracy of monitoring of tools, for finding that in time fault provides reliable foundation, safety benefit is obvious.
Accompanying drawing explanation
Accompanying drawing 1 is circuit theory diagrams of the present invention.
Embodiment
As shown in Figure 1, the present invention is that a kind of transformer or reactor oil temperature detect and analogue means, comprise multifunctional meter G, the first detection terminal G-1 of this multifunctional meter G is connected with the first lead-out terminal ZK-1 and the 3rd lead-out terminal ZK-3 of function switch ZK successively with the 3rd detection terminal G-3, and the second detection terminal G-2 of this multifunctional meter G is connected with the second lead-out terminal ZK-2 and the 4th lead-out terminal ZK-4 of function switch ZK successively with the 4th detection terminal G-4, and the sub-ZK-5 of the first input end of function switch ZK and the second input terminal ZK-6 are unsettled.
Wherein between the 3rd detection terminal G-3 of multifunctional meter G and the 4th detection terminal G-4, be also parallel with adjustable resistance R, adjustable resistance R setting range is 96 ohm to 157 ohm (in corresponding Pt100 industrial resistance scale division value tables-9 ℃ to 150 ℃), and this adjustable resistance R also connects with first method switch KK1; Wherein between the second detection terminal G-2 of multifunctional meter G and the second lead-out terminal ZK-2 of function switch ZK, be also in series with second method switch KK2, the input end of this second method switch KK2 is connected with the second lead-out terminal ZK-2 of function switch ZK, and an output terminal of this second method switch KK2 meets the second detection terminal G-2 of multifunctional meter G by the current source A of series connection, the second detection terminal G-2 of another output termination multifunctional meter G of this second method switch KK2 simultaneously.
The first detection terminal G-1 of multifunctional meter G and the second detection terminal G-2 are the input ends of measuring electric current, and wherein the first detection terminal G-1 is common port; The 3rd detection terminal G-3 and the 4th detection terminal G-4 of multifunctional meter G are the input ends of measuring resistance, and wherein G-4 is common port.
Function switch ZK adopts single-pole double throw switch, and first method switch KK1 adopts single-pole single-throw (SPST) separating-closing type switch, and second method switch KK2 adopts single-pole double-throw switch (SPDT).
Wherein current source A is output as 4-20mA current signal, and function switch ZK 2 enters 4 and goes out switch, and first method switch KK1 1 enters 1 and goes out switch, and second method switch KK2 1 enters 2 and goes out switch.Specifically function switch adopts current system and resistance mode switch, and first method switch adopts resistance output and measures switch, and second method switch adopts electric current output and measures switch.
Current source A:
Whole current source A adopts 24V electric battery, and MC7805K is the fixed integrated regulator of three ends, and current output terminal connects load (setting pull-up resistor value is RL), and Rw is adjustable resistor, for regulation output electric current, detects reometer for detection of output current value.Principle of work: fixed integrated regulator is operated in suspended state accesses an adjustable resistor Rw between output terminal 2 and common port 3, thereby forms a fixing constant current source.Regulate adjustable resistor Rw, can change size of current, its output current is: IL=(Uout/Rw)+Iq, the quiescent current that in formula, Iq is MC7805, is less than 4mA.In the time that pull-up resistor RL changes, the fixed integrated regulator MC7805K of three ends remains constant by the electric current of load with change self pressure reduction.Because this adjustable constant-flow source requires output current at 4-20mA, Uout=5V, therefore adjustable resistor Rw resistance is 250-1250 Ω.
Using method of the present invention and principle of work are:
One, measure main transformer (main-transformer) temperature working method:
1, measure the working method of current values:
Function switch ZK in the present invention is switched to the first lead-out terminal ZK-1, the second lead-out terminal ZK-2 working method, and second method switch KK2 is switched to the direct mode of communicating with the second detection terminal G-2.Remove the wiring of main transformer terminal box oil temperature input terminal, by the sub-ZK-5 of first input end, the second input terminal ZK-6 in oil temperature input wires access the present invention, can measure main transformer oil temperature by multifunctional meter G afterwards.
2, the working method of measuring resistance numerical value:
Function switch ZK in the present invention is switched to the 3rd lead-out terminal ZK-3, the 4th lead-out terminal ZK-4 working method, and first method switch KK1 is switched to disconnect mode.Remove the wiring of main transformer terminal box oil temperature input terminal, by the sub-ZK-5 of first input end, the second input terminal ZK-6 in oil temperature input wires access the present invention, can measure main transformer oil temperature by multifunctional meter G afterwards.
Two, simulation main transformer temperature uploading operation mode:
1, the working method that analog current is uploaded:
Function switch ZK in the present invention is switched to the first lead-out terminal ZK-1, the second lead-out terminal ZK-2 working method, and second method switch KK2 is switched to current source A and connects pattern.Remove the wiring of main transformer terminal box oil temperature input terminal, by sub-first input end in the present invention ZK-5, the second input terminal ZK-6 access main transformer terminal box oil temperature input terminal.
2, the working method that artifical resistance is uploaded:
Function switch ZK in the present invention is switched to the 3rd lead-out terminal ZK-3, the 4th lead-out terminal ZK-4 working method, and first method switch KK1 is switched to swept resistance and connects pattern.Remove the wiring of main transformer terminal box oil temperature input terminal, by sub-first input end in the present invention ZK-5, the second input terminal ZK-6 access main transformer terminal box oil temperature input terminal.
Claims (3)
1. a transformer or reactor oil temperature detect and analogue means, it is characterized in that: comprise multifunctional meter (G), first detection terminal (G-1) of this multifunctional meter (G) is connected with the first lead-out terminal (ZK-1) and the 3rd lead-out terminal (ZK-3) of function switch (ZK) successively with the 3rd detection terminal (G-3), and second detection terminal (G-2) of this multifunctional meter (G) is connected with the second lead-out terminal (ZK-2) and the 4th lead-out terminal (ZK-4) of function switch (ZK) successively with the 4th detection terminal (G-4), and first input end (ZK-5) of function switch (ZK) and the second input terminal (ZK-6) are unsettled, wherein between the 3rd detection terminal (G-3) of multifunctional meter (G) and the 4th detection terminal (G-4), be also parallel with adjustable resistance (R), and this adjustable resistance (R) is also connected with first method switch (KK1), wherein between second detection terminal (G-2) of multifunctional meter (G) and second lead-out terminal (ZK-2) of function switch (ZK), be also in series with second method switch (KK2), the input end of this second method switch (KK2) is connected with second lead-out terminal (ZK-2) of function switch (ZK), and an output terminal of this second method switch (KK2) connects second detection terminal (G-2) of multifunctional meter (G) by the current source (A) of series connection, second detection terminal (G-2) of another output termination multifunctional meter (G) of this second method switch (KK2) simultaneously.
2. transformer as claimed in claim 1 or reactor oil temperature detect and analogue means, it is characterized in that: wherein current source (A) is output as 4-20mA current signal.
3. transformer as claimed in claim 1 or 2 or reactor oil temperature detect and analogue means, it is characterized in that: wherein function switch (ZK) adopts current system and resistance mode switch, first method switch (KK1) adopts resistance output and measures switch, and second method switch (KK2) adopts electric current output and measures switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410053123.1A CN103776553B (en) | 2014-02-17 | 2014-02-17 | Transformator or reactor oil temperature detect and analog |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410053123.1A CN103776553B (en) | 2014-02-17 | 2014-02-17 | Transformator or reactor oil temperature detect and analog |
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| Publication Number | Publication Date |
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| CN103776553A true CN103776553A (en) | 2014-05-07 |
| CN103776553B CN103776553B (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410053123.1A Expired - Fee Related CN103776553B (en) | 2014-02-17 | 2014-02-17 | Transformator or reactor oil temperature detect and analog |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117031164A (en) * | 2023-08-10 | 2023-11-10 | 国网山东省电力公司临沂供电公司 | Dry-type air-core reactor operating temperature intelligent supervision system based on data analysis |
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| CN87100716A (en) * | 1987-02-21 | 1987-08-12 | 贾培启 | Portable numerical universal thermometer |
| JP2002181631A (en) * | 2000-12-18 | 2002-06-26 | Mitsubishi Electric Corp | Semiconductor device for electric power |
| KR20030065843A (en) * | 2002-02-01 | 2003-08-09 | (주)한우리 전자 | Apparatus and Method for detecting a temperature |
| CN201021906Y (en) * | 2006-11-21 | 2008-02-13 | 大连大学 | Heat sensitive resistance thermometer |
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| CN103017939A (en) * | 2012-12-05 | 2013-04-03 | 宁夏电力公司检修公司 | Novel temperature controller checking device |
| CN203758632U (en) * | 2014-02-17 | 2014-08-06 | 国家电网公司 | Transformer or electric reactor oil temperature detection and simulation device |
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2014
- 2014-02-17 CN CN201410053123.1A patent/CN103776553B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN87100716A (en) * | 1987-02-21 | 1987-08-12 | 贾培启 | Portable numerical universal thermometer |
| JP2002181631A (en) * | 2000-12-18 | 2002-06-26 | Mitsubishi Electric Corp | Semiconductor device for electric power |
| KR20030065843A (en) * | 2002-02-01 | 2003-08-09 | (주)한우리 전자 | Apparatus and Method for detecting a temperature |
| CN201021906Y (en) * | 2006-11-21 | 2008-02-13 | 大连大学 | Heat sensitive resistance thermometer |
| CN102928124A (en) * | 2012-11-14 | 2013-02-13 | 甘粛省电力公司白银供电公司 | Inspection tool of temperature transmitter |
| CN103017939A (en) * | 2012-12-05 | 2013-04-03 | 宁夏电力公司检修公司 | Novel temperature controller checking device |
| CN203758632U (en) * | 2014-02-17 | 2014-08-06 | 国家电网公司 | Transformer or electric reactor oil temperature detection and simulation device |
Non-Patent Citations (2)
| Title |
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| 变压器油温的测量和采集: "张英明等", 《农村电工》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117031164A (en) * | 2023-08-10 | 2023-11-10 | 国网山东省电力公司临沂供电公司 | Dry-type air-core reactor operating temperature intelligent supervision system based on data analysis |
| CN117031164B (en) * | 2023-08-10 | 2024-03-26 | 国网山东省电力公司临沂供电公司 | Dry-type air-core reactor operating temperature intelligent supervision system based on data analysis |
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| CN103776553B (en) | 2016-06-15 |
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Granted publication date: 20160615 Termination date: 20190217 |