CN204286646U - Main transformer of transformer substation thermometric loop fault detecting device - Google Patents
Main transformer of transformer substation thermometric loop fault detecting device Download PDFInfo
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- CN204286646U CN204286646U CN201420833823.8U CN201420833823U CN204286646U CN 204286646 U CN204286646 U CN 204286646U CN 201420833823 U CN201420833823 U CN 201420833823U CN 204286646 U CN204286646 U CN 204286646U
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- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 239000000523 sample Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000013519 translation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a kind of main transformer of transformer substation thermometric loop fault detecting device, relate to transformer station's maintenance technology field; Comprise adjustable resistance and resistance R1, described adjustable resistance is connected with temperature transmitter with after resistance R1 parallel connection; Also comprise multimeter, for detecting resistance or the both end voltage of adjustable resistor, and for detected temperatures transmitter both end voltage.The utility model facilitates the detection carrying out main-transformer thermometric fault, and can direct fault point, avoid because trouble spot is indefinite and force staff to climb the transformer of charging operation, reduce the possibility of hot line job to greatest extent, greatly improve the safety coefficient of site work.
Description
Technical field
The utility model relates to transformer station's maintenance technology field.
Background technology
Main-transformer carries one of topmost equipment as transformer station's power transformation, load, under long-time, large load, hot environment, the insulating property of main-transformer decline with the rising of temperature, make the accelerated deterioration of main-transformer insulating property, and then affect the serviceable life of main-transformer, once run under losing supervision, losing air-cooled hot environment, the safe operation of main-transformer must be jeopardized, and then the accident causing main-transformer turn-to-turn short circuit occurs.
For avoiding the generation of above-mentioned accident, main-transformer has all installed main transformer thermometric loop additional to be monitored, resistance by Pt100 thermometer is uploaded to converter temperature, after the CPU collection magnitude of voltage that converter temperature is converted into 0-5V, on deliver to measure and control device and backstage, for operations staff provide monitoring temperature data and stop, throw air-cooled, pressure load operation.
The fault detect in current main transformer thermometric loop adopts Comparison Method substantially, because the temperature value inscribed time a certain is fixed, thermosensitive resistance is also fixed, therefore can only to compare adjustment with the temperature shown at that time, and be difficult to the adjustment carrying out overall process, to invisible defect and wiring, arranging mistake can not Timeliness coverage, has buried hidden danger to operation.And these type of abnormal conditions, can only investigate one by one each components and parts in this loop, compare with the resistance of another thermometer of main-transformer on the same stage simultaneously, avoid because operating personnel lack experience, location is inaccurate, and forces staff to be forced to climb the main-transformer of charging operation, change thermometer or thermometer probe, get rid of exception, often lose more than gain, hide some dangers for safety in production.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of main transformer of transformer substation thermometric loop fault detecting device, facilitate the detection carrying out main-transformer thermometric fault, and can direct fault point, avoid because trouble spot is indefinite and force staff to climb the transformer of charging operation, reduce the possibility of hot line job to greatest extent, greatly improve the safety coefficient of site work.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of main transformer of transformer substation thermometric loop fault detecting device, comprise adjustable resistor and resistance R1, described adjustable resistor is connected with temperature transmitter with after resistance R1 parallel connection; Also comprise multimeter, for detecting resistance or the both end voltage of adjustable resistor, and for detected temperatures transmitter both end voltage.
Further technical scheme, the resistance of described resistance R1 is 200 ohm.
Further technical scheme, described adjustable resistor is the potentiometer Rf2 with switch, described potentiometer Rf2 is installed in multimeter, potentiometer Rf2 be connected on and multimeter 200 ohm of gears between, make multimeter possess the function of display translation resistance, described pen meter of universal meter is connected with temperature transmitter simultaneously.
The beneficial effect adopting technique scheme to produce is: adjustable resistor instead of the thermocouple resistance of thermometer, the changing value of resistance and temperature can be adjusted flexibly, check the overall process of main-transformer temperature acquisition, display, whether measure loop wiring is correct, facilitates searching of main transformer thermometric loop fault point; Can direct fault point, avoid because agnogenio, and the transformer forcing staff to climb charging operation changes probe and thermometer, or make the charged functional trial doing thermometer probe temperature of staff, reduce the possibility of hot line job to greatest extent, greatly improve the safety coefficient of site work; When carrying out equipment debugging and defect processing, wiring is simple, accurate positioning, instead of the past charged climbing main-transformer to pull down temp probe, then introduces power supply, by the test method of heater plate, improve work efficiency; Meanwhile, utilize multimeter 200 Ω gear, energy display translation 0-200 Ω resistance, can export on measurement limit, limit, changes multimeter and only have measurement input, do not have the function of output.The utility model is with low cost, and structure is simple, and be easy to make, good operability, can be widely used in debugging and the troubleshooting in main-transformer thermometric loop.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of the utility model embodiment 1;
Fig. 2 is corresponding RCS-9703 measure and control device optimum configurations explanation in embodiment 1;
Fig. 3 is the structure principle chart of the utility model embodiment 2;
Fig. 4 is main-transformer temperature logs in embodiment 2.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1
As shown in Figure 1, main transformer of transformer substation thermometric loop fault detecting device, with the temperature element in adjustable resistor Rf1 replacement main transformer thermometric loop as thermocouple resistance, in cut-in temperature transmitter.Wherein, temperature transmitter is connected with measure and control device.Adjustable resistor Rf1 is in parallel with the resistance R1 of 200 Ω.According to thermopair and the several different resistance of temperature table of comparisons setting, check backstage temperature value respectively, reference table 1, failure judgement position.
The industrial platinum resistance thermometer sensor, phasing meter of table 1
Judgment principle is as follows:
(1) regulate adjustable resistor Rf1, and detect the resistance of adjustable resistor Rf1 with multimeter, question blank 1, the temperature value that the resistance obtaining testing is corresponding, if this temperature value is corresponding with the displayed value in thermometric loop, then problem generally goes out on thermometer.
(2) if the probe temperature value in (1) is not corresponding with displays temperature value, regulate adjustable resistor Rf1, whether the voltage that when detecting different resistance with multimeter, temperature transmitter exports changes, if not change, is then tentatively judged as that temperature transmitter damages.The voltage output end of variohm Rf1 and measure and control device are exchanged, check thermometric loop temperature variation, if Temperature displaying is correct, then can be defined as temperature transmitter and damages.
(3) exchange with the resistance gear of test or the voltage output end of variohm Rf1 and measure and control device, check the temperature variation in thermometric loop, if the Temperature displaying in thermometric loop is incorrect, please check that whether the temperature transmitter type in measure and control device selected by monitoring parameter is correct, whether optimum configurations is correct, whether the temperature association in thermometric loop is correct, as shown in Figure 3.
Embodiment 2
Resistance due to the adjustable resistor Rf1 in embodiment 1 also needs to measure with multimeter, and inconvenient operation, as different from Example 1, produces digital display type temperature fault detecting device with multimeter and potentiometer Rf2.
As shown in Figure 3, in parallel with the potentiometer Rf2 of switch and the resistance R1 of 200 Ω, to make the resistance of output be less than 200 Ω, be then installed in digital multimeter, be connected to and 200 Ω gears between.Directly export the resistance of adjustable 0-180 Ω through the p-wire of multimeter, connect with temperature transmitter after being then connected with K switch 2, simulate the temperature variation resistance of main transformer thermometer.The resistance size exported is adjusted by potentiometer Rf2, and the display screen of multimeter shows.
During use, the gear of multimeter is got to 200 Ω, open the K switch 1 of potentiometer Rf2, the resistance of control test temperature adjustment potentiometer Rf2, analog temperature curve, as shown in Figure 4.To close disturbance rejection K switch 2, monitor the temperature variation in thermometric loop.After having worked, close potentiometer Rf2 K switch 1, each function of multimeter still can normally use.
The utility model can simulate the actual tendency of main-transformer temperature, prevents wiring error, and the damage of detected temperatures table, temperature transmitter option mistake, backstage temperature association point arrange the wrong backstage thermometric caused and forbidden.
The utility model can facilitate searching of field adjustable and thermometric fault, utilizes the gear of multimeter 200 Ω can the resistance of display translation 0-200 Ω, can export on measurement limit, limit, changes multimeter and only has and measure input, not have the function of output.Make the thermocouple temperature table of comparisons, convenient on-the-spot consulting and comparison.Convert through resistance 0-180 Ω, simulation Pt100 thermometer resistance output valve under circumstances, checks the overall process of main-transformer temperature acquisition, display, checks loop and observing and controlling, backstage is arranged, the correctness of measure loop wiring.The utility model is with low cost, make simple, wiring is simple, and experimental technique is flexible, good operability, hinder without implementing, debugging and the troubleshooting in main transformer thermometric loop can be widely used in, proper especially production appropriate technology, equality circuit standardized management requirement, meet the requirement of safety work, production practical problems can be solved very well.
Claims (3)
1. a main transformer of transformer substation thermometric loop fault detecting device, is characterized in that comprising adjustable resistor and resistance R1, and described adjustable resistor is connected with temperature transmitter with after resistance R1 parallel connection; Also comprise multimeter, for detecting resistance or the both end voltage of adjustable resistor, and for detected temperatures transmitter both end voltage.
2. main transformer of transformer substation thermometric loop fault detecting device according to claim 1, is characterized in that the resistance of described resistance R1 is 200 ohm.
3. main transformer of transformer substation thermometric loop fault detecting device according to claim 1, it is characterized in that described adjustable resistor is the potentiometer Rf2 with switch, described potentiometer Rf2 is installed in multimeter, potentiometer Rf2 be connected on and multimeter 200 ohm of gears between, described pen meter of universal meter is connected with temperature transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420833823.8U CN204286646U (en) | 2014-12-25 | 2014-12-25 | Main transformer of transformer substation thermometric loop fault detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420833823.8U CN204286646U (en) | 2014-12-25 | 2014-12-25 | Main transformer of transformer substation thermometric loop fault detecting device |
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| Publication Number | Publication Date |
|---|---|
| CN204286646U true CN204286646U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420833823.8U Expired - Fee Related CN204286646U (en) | 2014-12-25 | 2014-12-25 | Main transformer of transformer substation thermometric loop fault detecting device |
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| CN (1) | CN204286646U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644168A (en) * | 2015-11-04 | 2017-05-10 | 江苏嘉钰新能源技术有限公司 | Convenient and rapid temperature debugging and testing device for battery management system |
| CN107764433A (en) * | 2016-08-23 | 2018-03-06 | 哈尔滨飞机工业集团有限责任公司 | A kind of Inter-Turbine Temperature watch test device |
| CN112097947A (en) * | 2020-08-07 | 2020-12-18 | 国网山东省电力公司青岛供电公司 | Detection system and method for main transformer oil surface temperature measurement equipment |
| CN115950470A (en) * | 2022-12-20 | 2023-04-11 | 陕西宝成航空仪表有限责任公司 | Sensor function self-checking circuit |
| CN117054766A (en) * | 2023-06-29 | 2023-11-14 | 陕西汉特智电装备有限责任公司 | Defect detection device for power transformer |
-
2014
- 2014-12-25 CN CN201420833823.8U patent/CN204286646U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644168A (en) * | 2015-11-04 | 2017-05-10 | 江苏嘉钰新能源技术有限公司 | Convenient and rapid temperature debugging and testing device for battery management system |
| CN107764433A (en) * | 2016-08-23 | 2018-03-06 | 哈尔滨飞机工业集团有限责任公司 | A kind of Inter-Turbine Temperature watch test device |
| CN112097947A (en) * | 2020-08-07 | 2020-12-18 | 国网山东省电力公司青岛供电公司 | Detection system and method for main transformer oil surface temperature measurement equipment |
| CN115950470A (en) * | 2022-12-20 | 2023-04-11 | 陕西宝成航空仪表有限责任公司 | Sensor function self-checking circuit |
| CN117054766A (en) * | 2023-06-29 | 2023-11-14 | 陕西汉特智电装备有限责任公司 | Defect detection device for power transformer |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20201225 |