CN204085742U - A kind of temperature acquisition loop tester - Google Patents
A kind of temperature acquisition loop tester Download PDFInfo
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- CN204085742U CN204085742U CN201420580918.3U CN201420580918U CN204085742U CN 204085742 U CN204085742 U CN 204085742U CN 201420580918 U CN201420580918 U CN 201420580918U CN 204085742 U CN204085742 U CN 204085742U
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- 238000005070 sampling Methods 0.000 claims abstract description 33
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 238000012795 verification Methods 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 8
- 230000007547 defect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910052697 platinum Inorganic materials 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to electric system temperature detection technical field, is specifically related to a kind of temperature acquisition loop tester.This temperature acquisition loop tester comprises the duplex potentiometer be arranged on respectively on cabinet, temperature digital display transmitter and power supply, temperature digital display transmitter is connected with power supply, which is provided with resistance input terminal, duplex potentiometer is provided with the first resistance lead-out terminal and the second resistance lead-out terminal, first resistance lead-out terminal is equal with the resistance that the second resistance lead-out terminal exports, first resistance lead-out terminal is connected with resistance input terminal, by temperature digital display transmitter test verification temperature, second resistance lead-out terminal is serially connected with in main transformer temperature sampling secondary circuit, by back-stage management machine monitoring backstage temperature.Effectively can be verified the correctness of main transformer temperature sampling secondary circuit by this temperature acquisition loop tester, and the trouble spot of energy quick position main transformer temperature sampling secondary circuit.
Description
Technical field
The utility model relates to electric system temperature detection technical field, particularly relates to a kind of temperature acquisition loop tester for transformer.
Background technology
Main transformer of transformer substation is power transmission and transforming equipment most crucial in electric system, its status is important, expensive, its duty is directly connected to the safe and stable operation of electric system, and depend on its winding temperature the serviceable life of main transformer of transformer substation to a great extent, be called main transformer temperature traditionally, the height of main transformer temperature directly affects the aging speed of inner insulation material, also the serviceable life of main-transformer is affected, so the main transformer temperature data that to be of dispatching and monitoring important, once exceed regulation running temperature, corresponding measure of will sampling.And when main transformer operation occurs that abnormal temperature raises, if background monitoring data accurately can not reflect true service data, can not be processed in time, and the serious consequence causing it to burn.
In long-term operation maintenance, we find main-transformer actual temperature and the inconsistent defect frequency of occurrences of background acquisition temperature higher, its main cause is that the remote monitoring data of main transformer temperature calculate formation by a series of sampling, and main transformer temperature is a dynamically amount, four seasons data variation is larger, whether this just causes verifying backstage temperature at short notice and contrasts with actual temperature, especially in new website is checked and accepted, the defect in temperature monitoring loop cannot be got rid of, cause the inconsistent situation of actual winding temperature and backstage displays temperature after putting into operation often to occur.In addition, when the fault that process main transformer Temperature displaying is not corresponding, because neither one standard displayed value can be for reference, deal with and waste time and energy, greatly have impact on treatment effeciency.
For above deficiency, need one effectively can verify main transformer temperature sampling secondary circuit, and can the tester of trouble spot in quick position main transformer temperature sampling secondary circuit.
Utility model content
(1) technical matters that will solve
The technical problems to be solved in the utility model there is provided a kind of temperature acquisition loop tester, make it possible to effectively verify main transformer temperature sampling secondary circuit at transformer station's acceptance period, and can trouble spot in quick position main transformer temperature sampling secondary circuit.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of temperature acquisition loop tester, comprise the duplex potentiometer be arranged on respectively on cabinet, temperature digital display transmitter and power supply, described temperature digital display transmitter is connected with power supply, which is provided with resistance input terminal, described duplex potentiometer is provided with the first resistance lead-out terminal and the second resistance lead-out terminal, described first resistance lead-out terminal is equal with the resistance that the second resistance lead-out terminal exports, described first resistance lead-out terminal is connected with resistance input terminal, by temperature digital display transmitter test verification temperature, described second resistance lead-out terminal is serially connected with in main transformer temperature sampling secondary circuit, by back-stage management machine monitoring backstage temperature.
Wherein, described temperature digital display transmitter is provided with current output terminal, and described current output terminal is connected on measure and control device, is verified the temperature coefficient of described back-stage management machine by temperature digital display transmitter.
Wherein, it is characterized in that, the range of current that described current output terminal exports is 4-20 milliampere.
Wherein, it is characterized in that, the case lid that described cabinet comprises casing and is flexibly connected with casing, described duplex potentiometer, temperature digital display transmitter and power supply are installed in casing respectively.
Wherein, it is characterized in that, described casing is provided with the knob for regulating duplex potentiometer resistance size, and the resistance the first resistance lead-out terminal being exported by described knob and the resistance that exports of the second resistance lead-out terminal synchronously change.
Wherein, described casing is provided with the power switch opened and closed for controlling temperature digital display transmitter.
Wherein, described casing is provided with multiple port, and described port is respectively with the first resistance lead-out terminal, the second resistance lead-out terminal, resistance input terminal with current output terminal is corresponding arranges.
Wherein, described casing is provided with for the charging port for power source charges.
Wherein, described power supply is the direct-flow storage battery of 24V.
(3) beneficial effect
Technique scheme of the present utility model has following beneficial effect: the temperature digital display transmitter of the utility model temperature acquisition loop tester is connected with power supply, which is provided with resistance input terminal, duplex potentiometer is provided with the first resistance lead-out terminal and the second resistance lead-out terminal, first resistance lead-out terminal is equal with the resistance that the second resistance lead-out terminal exports and place circuit is separate separately, first resistance lead-out terminal is connected with resistance input terminal, by temperature digital display transmitter test verification temperature, second resistance lead-out terminal is serially connected with in main transformer temperature sampling secondary circuit, by back-stage management machine monitoring backstage temperature.This temperature acquisition loop tester achieves and effectively verifies the correctness of main transformer temperature sampling secondary circuit, can the concrete trouble spot of existing defects in fast finding secondary circuit, decrease the maintenance frequency of defect elimination, substantially increase work efficiency, reduce O&M cost; This temperature acquisition loop tester abandons equipment in the past must connect the situation of external power supply, in cabinet, install power supply additional, makes it operate to change at any time, portability; At newly-built transformer station acceptance period, by the correctness of this temperature acquisition loop tester checking main transformer temperature sampling secondary circuit, prevent from being adjusted to temperature consistency by informal method, improve and check and accept efficiency, at utmost ensure that transformer station zero-fault puts into operation, for management and running personnel accurate assurance equipment running status with make accurate judgment in time and serve key effect.
Accompanying drawing explanation
Fig. 1 is the inner structure schematic diagram of the utility model embodiment temperature acquisition loop tester;
Fig. 2 is the stereographic map of the utility model embodiment temperature acquisition loop tester;
Fig. 3 is the connection diagram of the utility model embodiment main transformer temperature sampling secondary circuit graph.
Wherein, 1: cabinet; 2: duplex potentiometer; 3: temperature digital display transmitter; 4: power supply; 5: main transformer temperature sampling secondary circuit; 11: casing; 12: case lid; 21: the first resistance lead-out terminals; 22: the second resistance lead-out terminals; 31: resistance input terminal; 32: current output terminal; 51: back-stage management machine; 52: measure and control device; 53: temperature transmitter; 54: secondary cable; 55: body terminal case; 56: platinum resistance; 57: main-transformer thermometer; 111: knob; 112: power switch; 113: port; 114: charging port.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples for illustration of the utility model, but can not be used for limiting scope of the present utility model.
In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more; Term " on ", D score, "left", "right", " interior ", " outward ", " front end ", " rear end ", " head ", the orientation of the instruction such as " afterbody " or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " etc. only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " is connected ", " connection " should be interpreted broadly, such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
As shown in Figure 1, temperature acquisition loop tester described in the present embodiment comprises the duplex potentiometer 2 be arranged on respectively on cabinet 1, temperature digital display transmitter 3 and power supply 4, temperature digital display transmitter 3 is connected with power supply 4, power supply 4 provides electric energy for temperature digital display transmitter 3, temperature digital display transmitter 3 is provided with resistance input terminal 31, and the resistance that temperature digital display transmitter 3 can input according to resistance input terminal 31 is converted into corresponding temperature value, duplex potentiometer 2 is provided with the first resistance lead-out terminal 21 and the second resistance lead-out terminal 22, first resistance lead-out terminal 21 is equal with the resistance that the second resistance lead-out terminal 22 exports and place circuit is separate separately, first resistance lead-out terminal 21 is connected with resistance input terminal 31, verification temperature is tested by temperature digital display transmitter 3, second resistance lead-out terminal 22 is serially connected with in main transformer temperature sampling secondary circuit 5, backstage temperature is monitored by back-stage management machine 51, by comparing verification temperature and backstage temperature, realize transformer station's acceptance period effectively verify main transformer temperature sampling secondary circuit 5 correctness and can quick position trouble spot when main transformer temperature sampling secondary circuit 5 breaks down.
In addition, temperature digital display transmitter 3 is also provided with current output terminal 32, current output terminal 32 is connected on measure and control device 52, is verified the temperature coefficient of back-stage management machine 51 by temperature digital display transmitter 3, makes back-stage management machine 51 correctly show the backstage temperature of monitoring.The range of current that current output terminal 32 exports is preferably 4-20 milliampere, ensures that the measure and control device 52 of electric current and the transformer station exported matches.
As shown in Figure 2, the case lid 12 that cabinet 1 comprises casing 11 and is flexibly connected with casing 11, duplex potentiometer 2, temperature digital display transmitter 3 and power supply 4 are installed in casing 11 respectively, casing 11 is provided with the knob 111 for regulating duplex potentiometer 2 resistance size, and the resistance the first resistance lead-out terminal 21 being exported by described knob 111 and the resistance that exports of the second resistance lead-out terminal 22 synchronously change.The first resistance lead-out terminal 21 on duplex potentiometer 2 and the circuit at the second resistance lead-out terminal 22 place do not interfere with each other, its resistance equal and opposite in direction exported and resistance value can carry out adjusted in concert by certain Changing Pattern, obtains the resistance value becoming certain relation with displacement.
Cabinet 1 is provided with the charging port 114 for charging for power supply 4, and preferably, power supply 4 is the direct-flow storage battery of 24V.Power supply 4 is installed in cabinet 1, has abandoned the normality that similar devices must connect external power supply, make it operate change, portability at any time.
Casing 11 is provided with the power switch 112 opened and closed for controlling temperature digital display transmitter 3.Casing 11 is provided with multiple port one 13, and port one 13 is respectively with the first resistance lead-out terminal 21, second resistance lead-out terminal 22, resistance input terminal 31 with current output terminal 32 is corresponding arranges.Wherein, the port of the first resistance lead-out terminal 21 is respectively R
21, R
22, R
23; The port of the second resistance lead-out terminal 22 is respectively R
31, R
32, R
33; The port of resistance input terminal 31 is respectively R
11, R
12, R
13.During connection, the port R of the first resistance lead-out terminal 21
21, R
22, R
23with the port R of resistance input terminal 31
11, R
12, R
13be corresponding in turn to connection respectively by wire, form loop; The port R of the second resistance lead-out terminal 22
31, R
32, R
33be serially connected with the corresponding port in main transformer temperature sampling secondary circuit 5 respectively by wire, form loop.
As shown in Figure 3, main transformer temperature sampling secondary circuit 5 comprises back-stage management machine 51, measure and control device 52, temperature transmitter 53, secondary cable 54, body terminal case 55, platinum resistance 56 and main-transformer thermometer 57, main-transformer thermometer 57 is for carrying out acquisition process to the temperature of transformer at any time, be the resistance changed by linear transfor between the temperature of collection and platinum resistance 56, and it is inputed in temperature transmitter 53 by body terminal case 55, the temperature transmitter output electric current of 4-20mA or the voltage of 0-5V are on the sampling plate of measure and control device 52, sampling plate converts the small area analysis collected or small voltage information to temperature information, and by back-stage management machine 51, temperature information is presented on background monitoring system, draw backstage temperature.
The utility model temperature acquisition loop tester course of work is:
(1) transforming plant main transformer temperature sampling secondary circuit correctness is verified.
Be specially: the first step, by the port R of the first resistance lead-out terminal of duplex potentiometer
21, R
22, R
23with the resistance input terminal R of temperature digital display transmitter
11, R
12, R
13be corresponding in turn to connection; Second step, by the second lead-out terminal R
31, R
32, R
33be serially connected with between platinum resistance in main transformer temperature sampling secondary circuit and body terminal case; 3rd step, is regulated the resistance value of duplex potentiometer, makes temperature digital display transmitter demonstrate verification temperature by the knob rotated on cabinet.Because the first resistance lead-out terminal of duplex potentiometer is identical with the resistance size that the second resistance lead-out terminal exports, if main transformer temperature sampling secondary circuit is intact, the backstage temperature of its backstage supervisor display will remain consistent with the verification temperature that temperature digital display transmitter shows; If inconsistent, then need the trouble spot of locating main transformer temperature sampling secondary circuit.
(2) trouble spot of main transformer temperature sampling secondary circuit is located.
Be specially: the first step, by the port R of the first resistance lead-out terminal of duplex potentiometer
21, R
22, R
23with the resistance input terminal R of temperature digital display transmitter
11, R
12, R
13be corresponding in turn to connection; Second step, is connected to measure and control device place by the current output terminal of temperature digital display transmitter; 3rd step, regulates the resistance value of duplex potentiometer by the knob rotated on cabinet, make temperature digital display transmitter obtain verifying temperature; If verification Temperature displaying and backstage Temperature displaying is inconsistent, then need the temperature coefficient regulating back-stage management machine, location end; If display is consistent, then represent that this section of loop is normal, continue location investigation; 4th step, by the second resistance lead-out terminal R
31, R
32, R
33be serially connected with between temperature transmitter in main transformer temperature sampling secondary circuit and secondary cable; 5th step, regulates the resistance value of duplex potentiometer by the knob rotated on cabinet, make temperature digital display transmitter obtain verifying temperature; If verification Temperature displaying and backstage Temperature displaying is inconsistent, then can judge that temperature transmitter has problems, replacing be carried out to it and processes; If consistent, then illustrate that trouble spot is positioned at the place of secondary cable, need investigate secondary cable or wiring condition.In addition, temperature sampling tester is connected on the main transformer side of secondary circuit, can verifies whether the display of main transformer thermometer is correct.
In sum, the temperature digital display transmitter of the utility model temperature acquisition loop tester is connected with power supply, which is provided with resistance input terminal, duplex potentiometer is provided with the first resistance lead-out terminal and the second resistance lead-out terminal, first resistance lead-out terminal is equal with the resistance that the second resistance lead-out terminal exports and place circuit is separate separately, first resistance lead-out terminal is connected with resistance input terminal, by temperature digital display transmitter test verification temperature, second resistance lead-out terminal is serially connected with in main transformer temperature sampling secondary circuit, by back-stage management machine monitoring backstage temperature.This temperature acquisition loop tester achieves and effectively verifies the correctness of main transformer temperature sampling secondary circuit, can the concrete trouble spot of existing defects in fast finding secondary circuit, decrease the maintenance frequency of defect elimination, substantially increase work efficiency, reduce O&M cost; This temperature acquisition loop tester abandons equipment in the past must connect the situation of external power supply, in cabinet, install power supply additional, makes it operate to change at any time, portability; At newly-built transformer station acceptance period, by the correctness of this temperature acquisition loop tester checking main transformer temperature sampling secondary circuit, prevent from being adjusted to temperature consistency by informal method, improve and check and accept efficiency, at utmost ensure that transformer station zero-fault puts into operation, for management and running personnel accurate assurance equipment running status with make accurate judgment in time and serve key effect.
Embodiment of the present utility model provides for the purpose of example and description, and is not exhaustively or by the utility model be limited to disclosed form.Many modifications and variations are apparent for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present utility model and practical application are better described, and enables those of ordinary skill in the art understand the utility model thus design the various embodiments with various amendment being suitable for special-purpose.
Claims (9)
1. a temperature acquisition loop tester, it is characterized in that, comprise the duplex potentiometer (2) be arranged on respectively on cabinet (1), temperature digital display transmitter (3) and power supply (4), described temperature digital display transmitter (3) is connected with power supply (4), which is provided with resistance input terminal (31), described duplex potentiometer (2) is provided with the first resistance lead-out terminal (21) and the second resistance lead-out terminal (22), described first resistance lead-out terminal (21) is equal with the resistance that the second resistance lead-out terminal (22) exports, described first resistance lead-out terminal (21) is connected with resistance input terminal (31), by temperature digital display transmitter (3) test verification temperature, described second resistance lead-out terminal (22) is serially connected with in main transformer temperature sampling secondary circuit (5), by back-stage management machine (51) monitoring backstage temperature.
2. according to temperature acquisition loop according to claim 1 tester, it is characterized in that, described temperature digital display transmitter (3) is provided with current output terminal (32), described current output terminal (32) is connected on measure and control device (52), is verified the temperature coefficient of described back-stage management machine (51) by temperature digital display transmitter (3).
3. according to temperature acquisition loop according to claim 2 tester, it is characterized in that, the range of current that described current output terminal (32) exports is 4-20 milliampere.
4. according to temperature acquisition loop according to claim 1 tester, it is characterized in that, the case lid (12) that described cabinet (1) comprises casing (11) and is flexibly connected with casing (11), described duplex potentiometer (2), temperature digital display transmitter (3) and power supply (4) are installed in casing (11) respectively.
5. according to temperature acquisition loop according to claim 4 tester, it is characterized in that, described casing (11) is provided with the knob (111) for regulating duplex potentiometer (2) resistance size, and the resistance that the resistance the first resistance lead-out terminal (21) being exported by described knob (111) and the second resistance lead-out terminal (22) export synchronously changes.
6. according to temperature acquisition loop according to claim 5 tester, it is characterized in that, described casing (11) is provided with the power switch (112) opened and closed for controlling temperature digital display transmitter (3).
7. according to temperature acquisition loop according to claim 6 tester, it is characterized in that, described casing (11) is provided with multiple port (113), and described port (113) is respectively with the first resistance lead-out terminal (21), the second resistance lead-out terminal (22), resistance input terminal (31) with current output terminal (32) is corresponding arranges.
8. according to temperature acquisition loop according to claim 7 tester, it is characterized in that, described casing (11) is provided with the charging port (114) for charging for power supply (4).
9. according to temperature acquisition loop according to claim 8 tester, it is characterized in that, the direct-flow storage battery that described power supply (4) is 24V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420580918.3U CN204085742U (en) | 2014-06-24 | 2014-10-09 | A kind of temperature acquisition loop tester |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420342578.0 | 2014-06-24 | ||
| CN201420342578 | 2014-06-24 | ||
| CN201420580918.3U CN204085742U (en) | 2014-06-24 | 2014-10-09 | A kind of temperature acquisition loop tester |
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| Publication Number | Publication Date |
|---|---|
| CN204085742U true CN204085742U (en) | 2015-01-07 |
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|---|---|---|---|
| CN201420580918.3U Active CN204085742U (en) | 2014-06-24 | 2014-10-09 | A kind of temperature acquisition loop tester |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112881832A (en) * | 2021-01-15 | 2021-06-01 | 国网山西省电力公司晋城供电公司 | Relay protection circuit calibration system |
| CN114112116A (en) * | 2021-11-29 | 2022-03-01 | 广东电网有限责任公司 | Transformer oil temperature calibration system and method |
-
2014
- 2014-10-09 CN CN201420580918.3U patent/CN204085742U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112881832A (en) * | 2021-01-15 | 2021-06-01 | 国网山西省电力公司晋城供电公司 | Relay protection circuit calibration system |
| CN114112116A (en) * | 2021-11-29 | 2022-03-01 | 广东电网有限责任公司 | Transformer oil temperature calibration system and method |
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