CN202547815U - Main oil temperature change verification apparatus - Google Patents
Main oil temperature change verification apparatus Download PDFInfo
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- CN202547815U CN202547815U CN201220078240XU CN201220078240U CN202547815U CN 202547815 U CN202547815 U CN 202547815U CN 201220078240X U CN201220078240X U CN 201220078240XU CN 201220078240 U CN201220078240 U CN 201220078240U CN 202547815 U CN202547815 U CN 202547815U
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- waver
- waveband switch
- oil temperature
- temperature
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Abstract
The utility model relates to a main oil temperature change verification apparatus that is used for verifying an oil temperature loop during the project acceptance or maintenance repair process. A first insertion detection hole is connected with the initial terminal of a 10 omega *10-waveband switch static contact; a 10 omega *10-waveband switch moving contact is connected with the initial terminal of a 100 omega *1-waveband switch static contact; a 100 omega *1-waveband switch moving contact is connected with the initial terminal of a 1omega *10-waveband switch static contact; a 1omega *10-waveband switch moving contact is connected with the initial terminal of 0.1omega *10-waveband switch static contact; a 0.1omega *10-waveband switch moving contact is connected with initial terminal of a 0.01omega *10-waveband switch static contact; and a 0.01omega *10-waveband switch moving contact is connected with a second insertion detection hole and a third insertion detection hole. According to the utility model, the advantages of the provided apparatus are as follows: the test apparatus can be grounded reliably and the test wiring is firm and the contact is good; and the on-site temperature change can be simulated randomly, the resistance value simulation is accurate, and the correctness of the oil temperature loop can be effectively verified.
Description
Technical field
The utility model relates to a kind of warm calibration equipment of main transformer oil that is used for the acceptance of work or the oily temperature loops of maintenance repair check, belongs to the temperature of oil in transformer calibration equipment and makes the field.
Background technology
In the substation transformer protection observing and controlling, main transformer oil temperature is very important monitor message, through the real-time monitoring to the oil temperature, can help operation, maintainer to judge whether main transformer inside exists fault or unusual.The warm variation range of oil is between 0 ℃ to 150 ℃, and real-time telemetry information generally is by being installed in the intrinsic RTD of transformer as temperature sensor, through temperature transmitter, measure and control device, and final incoming terminal monitoring backstage (like Fig. 3).Its RTD is as temperature sensor; Can be with the resistance value that converts into of temperature variation linearity; The resistance value of gathering is converted into the voltage of 0-5V with temperature transmitter or the magnitude of current of 4-20mA is exported to measure and control device, and the voltage or the magnitude of current of the reflection temperature that measure and control device will be gathered are converted into digital quantity, gives the backstage through switch; The backstage completely is worth the coefficient that completely is worth ratio with voltage through setting the reflection temperature, digital quantity is converted into temperature shows.Its sufficient part: background computer shows that the oil temperature is many with the inconsistent defective of oil thermometer displays temperature in the actual motion.
The utility model content
Purpose of design: avoid the weak point in the background technology, design a kind of warm calibration equipment of main transformer oil that is used for the acceptance of work or the oily temperature loops of maintenance repair check.
Design proposal: the utility model designs a kind of main transformer temperature calibration equipment; This device is in engineering capital construction examination or maintenance repair process; Can simulate real time temperature and change, and then verification main transformer backstage temperature coefficient, thus reach solve completely because the backstage coefficient the improper difference variation that causes is set after supervisory system oil temperature show inaccurate defective; Significantly reduce the hidden danger of main transformer operation, reduce maintainer's workload.Desired value: (1) can simulate actual oil temperature and change.(2) temperature error of simulated oil temperature is controlled in 0.25 ° of C.In order to realize above-mentioned desired value, the utility model one is through analyzing each link of signal transformation in the main transformer oil temperature loops, the method that finds the simulated oil temperature to change; The 2nd, because the PT100 precision can reach 0.1%, resistance precision can reach 0.01%, and the measure and control device precision can reach 0.1%, and backstage conversion precision can reach 1/2
8, therefore confirm that according to the minimum precision in each conversion links of oil temperature monitoring loop temperature error in 0.25 ° of C, can reach the purpose of design of the utility model.
Technical scheme: the warm calibration equipment of a kind of main transformer oil; First grafting detects the hole and is connected with 10 Ω * 10 waver stationary contact tops; 10 Ω * 10 waver moving contacts are connected with 100 Ω * 1 waver stationary contact top; 100 Ω * 1 waver moving contact is connected with 1 Ω * 10 waver stationary contact tops; 1 Ω * 10 waver moving contacts are connected with 0.1 Ω * 10 waver stationary contact tops, and 0.1 Ω * 10 waver moving contacts are connected with 0.01 Ω * 10 waver stationary contact tops, and 0.01 Ω * 10 waver moving contacts are connected with second, third detection hole of pegging graft.
The utility model is compared with background technology; The one, five gears are set, the resistance of respectively corresponding each one magnitude is five the gear series connection in 1 * 100,10 * 10,10 * 1,10 * 0.1,10 * 0.01 Europe; Can export the resistance in the RTD scope arbitrarily; Not only the linearity of backstage temperature coefficient timing can accurately be selected, realized to resistance, and the resistance switching is very convenient, and make simple; The 2nd, the application passes through changes in resistance simulation RTD and changes, but the indirect analog temperature variation; The 3rd, precision height and and reliable in stability are applicable to the higher occasion of accuracy requirement; The 4th, test unit ground connection is reliable, and test connection is firm, and contact is good, can simulate scene temperature arbitrarily and change, and the resistance simulation accurately can effectively be checked oily temperature loops correctness; The 5th, use the simulated field oil temperature variation arbitrarily of relay protection main transformer temperature calibration equipment; Through changing the oil temperature; Can check quickly and easily whether each converting member in the oily temperature monitoring loop changes output valve with the variation of oil temperature linearly; The fault location position has not only significantly reduced the defective investigation time rapidly and accurately, has also reduced maintenance workload; The 6th, change through providing the non-essential resistance of scalable resistance to simulate main transformer oil temperature for the transmitter outside; Because temperature can't accurately change, can't verify the difficult problem whether temperature characteristics and the setting of supervisory system parameter mate when thoroughly having solved capital construction examination and defect processing, significantly improve a defective and eliminate success ratio; Can significantly reduce the quantity that defective takes place; Improve power supply reliability, improved the efficient of oily temperature defective investigation simultaneously, reduced maintenance workload.
Description of drawings
Fig. 1 is the synoptic diagram of the warm calibration equipment of main transformer oil.
Fig. 2 is the warm calibration equipment panel synoptic diagram of main transformer oil.
Fig. 3 is the synoptic diagram of background technology.
Embodiment
Embodiment 1: with reference to attaching Fig. 1 and 2.The warm calibration equipment of a kind of main transformer oil, first grafting detects the hole and is connected with 10 Ω * 10 waver stationary contact tops, and 10 Ω * 10 waver moving contacts are connected with 100 Ω * 1 waver stationary contact top; 100 Ω * 1 waver moving contact is connected with 1 Ω * 10 waver stationary contact tops; 1 Ω * 10 waver moving contacts are connected with 0.1 Ω * 10 waver stationary contact tops, and 0.1 Ω * 10 waver moving contacts are connected with 0.01 Ω * 10 waver stationary contact tops, and 0.01 Ω * 10 waver moving contacts are connected with second, third detection hole of pegging graft; Promptly adopt the mode that changes the variation of resistance simulation RTD to come simulated field oil temperature to change; Five gears are set, and the resistance of respectively corresponding each one magnitude is five the gear series connection in 1 * 100,10 * 10,10 * 1,10 * 0.1,10 * 0.01 Europe; Can export the resistance in the RTD scope arbitrarily; To 20 megaohms, the permissible variation scope is 2%-0.001% to Standard resistance range from 0.01 Europe, and precision is high.The warm calibration equipment of said main transformer oil is provided with the ground connection spliced eye.
What need understand is: though the foregoing description is to the mentality of designing of the utility model detailed text description of contrasting; But these text descriptions; Just the simple text of the utility model mentality of designing is described; Rather than to the restriction of the utility model mentality of designing, any combination, increase or modification that does not exceed the utility model mentality of designing all falls in the protection domain of the utility model.
Claims (2)
1. the warm calibration equipment of main transformer oil; It is characterized in that: first grafting detects the hole and is connected with 10 Ω * 10 waver stationary contact tops; 10 Ω * 10 waver moving contacts are connected with 100 Ω * 1 waver stationary contact top; 100 Ω * 1 waver moving contact is connected with 1 Ω * 10 waver stationary contact tops; 1 Ω * 10 waver moving contacts are connected with 0.1 Ω * 10 waver stationary contact tops, and 0.1 Ω * 10 waver moving contacts are connected with 0.01 Ω * 10 waver stationary contact tops, and 0.01 Ω * 10 waver moving contacts are connected with second, third detection hole of pegging graft.
2. the warm calibration equipment of main transformer oil according to claim 1 is characterized in that: the warm calibration equipment of said main transformer oil is provided with the ground connection spliced eye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220078240XU CN202547815U (en) | 2012-03-05 | 2012-03-05 | Main oil temperature change verification apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220078240XU CN202547815U (en) | 2012-03-05 | 2012-03-05 | Main oil temperature change verification apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202547815U true CN202547815U (en) | 2012-11-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220078240XU Expired - Lifetime CN202547815U (en) | 2012-03-05 | 2012-03-05 | Main oil temperature change verification apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202547815U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196572A (en) * | 2013-04-17 | 2013-07-10 | 国家电网公司 | Method for improving main transformer remote-reading thermometer accuracy and remote-reading thermometer |
| CN103323133A (en) * | 2013-07-11 | 2013-09-25 | 北京天地玛珂电液控制系统有限公司 | Split type immersion type temperature sensor used for pump station |
| CN103984250A (en) * | 2014-04-28 | 2014-08-13 | 广东电网公司中山供电局 | Multi-gear resistance output device and detecting system |
| CN104101449A (en) * | 2014-08-14 | 2014-10-15 | 国网湖南省电力公司长沙供电分公司 | Linear oil temperature loop tester |
-
2012
- 2012-03-05 CN CN201220078240XU patent/CN202547815U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196572A (en) * | 2013-04-17 | 2013-07-10 | 国家电网公司 | Method for improving main transformer remote-reading thermometer accuracy and remote-reading thermometer |
| CN103323133A (en) * | 2013-07-11 | 2013-09-25 | 北京天地玛珂电液控制系统有限公司 | Split type immersion type temperature sensor used for pump station |
| CN103984250A (en) * | 2014-04-28 | 2014-08-13 | 广东电网公司中山供电局 | Multi-gear resistance output device and detecting system |
| CN103984250B (en) * | 2014-04-28 | 2017-04-12 | 广东电网公司中山供电局 | Multi-gear resistance output device and detecting system |
| CN104101449A (en) * | 2014-08-14 | 2014-10-15 | 国网湖南省电力公司长沙供电分公司 | Linear oil temperature loop tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20130129 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130129 Address after: Linping Yuhang town Henan District Hangzhou city Zhejiang province 311100 Dai Patentee after: Yuhang Power Supply Bureau Patentee after: State Grid Corporation of China Address before: Linping Yuhang town Henan District Hangzhou city Zhejiang province 311100 Dai Patentee before: Yuhang Power Supply Bureau |
|
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: STATE GRID ZHEJIANG HANGZHOU YUHANG DISTRICT POWER SUPPLY COMPANY Effective date: 20140730 Owner name: STATE GRID ZHEJIANG HANGZHOU YUHANG DISTRICT POWER Free format text: FORMER OWNER: STATE GRID CORPORATION OF CHINA Effective date: 20140730 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: STATE GRID ZHEJIANG HANGZHOU YUHANG DISTRICT POWER Free format text: FORMER NAME: YUHANG POWER SUPPLY BUREAU |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 311100 HANGZHOU, ZHEJIANG PROVINCE TO: 100031 XICHENG, BEIJING |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Linping Yuhang town Henan District Hangzhou city Zhejiang province 311100 Dai Patentee after: STATE GRID ZHEJIANG HANGZHOU YUHANG POWER SUPPLY Co. Patentee after: State Grid Corporation of China Address before: Linping Yuhang town Henan District Hangzhou city Zhejiang province 311100 Dai Patentee before: Yuhang Power Supply Bureau Patentee before: State Grid Corporation of China |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140730 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: STATE GRID ZHEJIANG HANGZHOU YUHANG POWER SUPPLY Co. Patentee after: HANGZHOU POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER Co. Patentee after: STATE GRID ZHEJIANG ELECTRIC POWER Co. Address before: Linping Yuhang town Henan District Hangzhou city Zhejiang province 311100 Dai Patentee before: STATE GRID ZHEJIANG HANGZHOU YUHANG POWER SUPPLY Co. Patentee before: State Grid Corporation of China |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |