CN111813082A - Probe heating type transformer winding temperature controller calibration device and method - Google Patents
Probe heating type transformer winding temperature controller calibration device and method Download PDFInfo
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- CN111813082A CN111813082A CN202010652443.4A CN202010652443A CN111813082A CN 111813082 A CN111813082 A CN 111813082A CN 202010652443 A CN202010652443 A CN 202010652443A CN 111813082 A CN111813082 A CN 111813082A
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- 238000004804 winding Methods 0.000 title claims abstract description 61
- 239000000523 sample Substances 0.000 title claims abstract description 39
- 238000010438 heat treatment Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 12
- 229920002545 silicone oil Polymers 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 206010037660 Pyrexia Diseases 0.000 claims description 2
- 230000002411 adverse Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention belongs to the technical field of electric power, and particularly relates to a probe heating type transformer winding temperature controller calibration device and a probe heating type transformer winding temperature controller calibration method. The invention adopts the integrated design of oil tank, oil pipe and temperature acquisition and display, has more perfect function than the conventional calibration device, can effectively restore the operating environment of the transformer winding temperature controller in the transformer body, enables the calibration data to be more suitable for the actual operating data, can visually display the winding temperature value, avoids the complicated calculation process, brings convenience for the calibration of the transformer winding temperature, effectively improves the calibration precision of the transformer winding temperature controller, avoids the adverse consequence caused by the calibration error, and has small volume, simple structure, convenient installation and easy operation.
Description
Technical Field
The invention belongs to the technical field of electric power, and particularly relates to a probe heating type transformer winding temperature controller calibration device and method.
Background
When the probe heating type transformer winding temperature controller works, the probe of the probe heating type transformer winding temperature controller acquires the temperature of the top oil of the transformer. The secondary current of the transformer current transformer is sent to a converter of the winding temperature controller, and is adjusted by the converter and then is introduced into an electric heating element of the temperature bulb to generate heat. The heat is superposed with the top oil temperature of the transformer collected by the probe, namely the top oil temperature is defined as the winding temperature of the measured transformer.
The calibration process of the transformer winding temperature controller is generally completed in a laboratory. The conventional checking method is that a temperature bulb of a winding temperature controller is directly inserted into an oil tank filled with silicone oil, and the oil in the oil tank is heated to a certain temperature so as to heat the temperature bulb. And then certain current is introduced into the temperature controller, the current generates corresponding temperature rise delta T after being adjusted by the current transformer, and the sum of the oil temperature collected by the probe and the delta T is the winding temperature value to be checked. The winding temperature value can be directly read on a winding temperature dial, and in addition, the winding temperature value is converted into 4-20mA quantity through a transmitter for remote transmission. The 4-20mA current amount for remote transmission is generally measured by connecting an ammeter in series, and the actual winding temperature value can be obtained only by manual conversion, so that the process is complicated.
In field operation, certain pressure exists in the transformer body, so that the direct insertion of the thermal bulb into the transformer body is impossible. The top of the transformer body is provided with an oil pipe with an upper opening, the oil pipe penetrates into the transformer body, and the oil pipe can isolate the oil of the transformer body from the outside. The temperature bulb of the transformer winding temperature controller is actually inserted into the smaller oil pipe filled with the transformer oil, the transformer oil is filled in the oil pipe, and the outer wall of the sealed oil pipe is directly contacted with the oil in the transformer body to be heated. The thermometer bulb in the laboratory is directly inserted into the oil tank to be contacted with the oil in the oil tank, and the thermometer bulb is in a large environment filled with the oil, which is not consistent with the actual operation condition on site. When the winding temperature controller is verified in a laboratory, in order to enable the oil temperature in the oil tank to be heated uniformly as much as possible, the stirring function of the oil tank needs to be started in the verification process, and therefore the oil in the oil tank can be in a flowing state all the time. The oil in a flowing state can accelerate the loss of secondary current compensation heat of the current transformer, so that the temperature sensing of the temperature bulb is unstable, and the check data is inaccurate. Practice proves that the calibration result in a laboratory has 7-8 ℃ deviation with the data after field operation. This can influence the operation and maintenance personnel to the accurate control of equipment parameter, and the deviation of setting value still can cause the cooling blower of transformer to open and stop temperature unusual, increases the risk of equipment damage.
Therefore, it is necessary to provide a device and a method for calibrating a winding temperature controller of a probe heating type transformer to solve the defects of the prior art.
Disclosure of Invention
The invention aims to provide a device and a method for calibrating a probe heating type transformer winding temperature controller, aiming at the defects of the prior art, the working environment of a temperature sensing component of the probe heating type transformer winding temperature controller in the field actual operation is reduced to the greatest extent, the remote temperature of the winding temperature controller is visually displayed through a temperature acquisition and display module, so that the calibration precision is more accurate, the winding temperature value is read more visually and conveniently, a complex manual calculation process is omitted, and adverse consequences caused by calibration errors are avoided.
The technical scheme of the invention is as follows:
the utility model provides a probe adds fever type transformer winding temperature controller calibration equipment, the device includes baffle, oil pipe, temperature acquisition display module and oil tank, and wherein oil pipe and baffle are connected perpendicularly, and temperature acquisition display module fixes on the baffle, and inside oil pipe inserted the oil tank perpendicularly to erect in the oil tank top through the baffle.
The baffle is circular, and a circular hole is formed in the center of the baffle.
The central hole of the baffle is connected with the top of the oil pipe in a sealing welding mode.
The temperature acquisition display module is fixed on the baffle by adopting an adhesive.
The top of the oil tank is provided with a round hole, and the aperture of the round hole is larger than the diameter of the oil pipe and smaller than the diameter of the baffle.
The inner diameter of the oil pipe is larger than the outer diameter of the thermal bulb casing pipe, and the length of the oil pipe is larger than the length of the thermal bulb casing pipe.
The oil pipe is made of copper.
The baffle is made of copper.
The two ends of the sampling resistor IN the temperature acquisition display module are respectively connected with the positive electrode and the negative electrode of an input terminal and a capacitor C1 IN parallel, the two ends of a capacitor C1 are connected with an input IN terminal and a G terminal of an amplifier, an output OUT terminal and a G terminal of the amplifier are connected with the two ends of a capacitor C2, the two ends of a capacitor C2 are also respectively connected with a P1.0 pin and a ground of a singlechip, a P2.3 pin of the singlechip is connected with a key control module, the P0.0, P0.1, P0.2, P0.3, P0.4, P0.5, P0.6, P0.7, P2.0, P2.1, P2.2 and P2.3 pins of the singlechip are respectively connected with a, b, C, D, e, f, G, dp, P1, P2, P3 and P4 pins of a nixie tube display module, the singlechip and VSS pins are respectively connected with the positive electrode and the negative electrode of an output terminal of a rectifier, and the VDD pin of the singlechip is also connected with the VDD pin of the nixie tube display module, the VSS end is grounded, and the input end of a transformer L1 of the power supply module is connected with two ends of a control power supply.
The calibration method of the probe heating type transformer winding temperature controller calibration device comprises the following steps:
and 3, connecting the 4-20mA output of the transmitter to an input terminal, connecting the 2V alternating current control power supply to the power supply module, and starting to check the winding temperature controller.
The invention has the following beneficial effects:
(1) the calibration device for the winding temperature controller of the probe heating type transformer adopts the integrated design of oil tank, oil pipe and temperature acquisition and display, and has more perfect functions compared with the conventional calibration device;
(2) the calibration device for the probe heating type transformer winding temperature controller can effectively reduce the operating environment of the transformer winding temperature controller in the transformer body, so that calibration data can be more suitable for actual operating data;
(3) the calibration device for the probe heating type transformer winding temperature controller has the advantages of small volume, simple structure, convenience in installation and easiness in operation;
(4) the calibration device for the probe heating type transformer winding temperature controller can visually display the winding temperature value, avoids a complicated calculation process and brings convenience to the calibration of the transformer winding temperature;
(5) the calibration device for the probe heating type transformer winding temperature controller can effectively improve the calibration precision of the transformer winding temperature controller and avoid adverse consequences caused by calibration errors.
Drawings
FIG. 1 is a schematic structural diagram of a calibration apparatus for a probe heating type transformer winding temperature controller provided by the present invention;
FIG. 2 is a circuit diagram of a temperature acquisition display module in the calibration device for the probe heating type transformer winding temperature controller provided by the invention;
FIG. 3 is an assembly view of a probe heating type transformer winding temperature controller calibration device according to the present invention;
in the figure: 1-a baffle plate; 2-oil pipe; 3-temperature acquisition and display module; 4-an oil tank; 5-an input terminal; 6-sampling resistance; 7-an amplifier; 8, a singlechip; 9-a key control module; 10-controlling the power supply; 11-a power supply module; 12-a nixie tube display module; 13-a bellows; 14-a transmitter; 15-nut I; 16-nut II; 17-temperature compensation heating wire; 18-a temperature sensing probe; 19-a bulb-in-tube.
Detailed Description
The invention is further described below with reference to examples and figures:
as shown in figure 1, the calibration device for the winding temperature controller of the probe heating type transformer comprises a baffle plate 1, an oil pipe 2, a temperature acquisition display module 3 and an oil tank 4, wherein the baffle plate 1 is circular, and a central opening of the baffle plate 1 is connected with the top of the oil pipe 2 in a sealing welding mode. The temperature acquisition display module 3 is arranged on the upper part of the baffle plate 1 and is fixed by adopting a strong adhesive. The round hole is opened at 4 tops of oil tank, and the aperture is greater than oil pipe 2's diameter, is less than baffle 1 diameter, and inside oil pipe 2 stretched into the oil tank perpendicularly from 4 top trompils departments of oil tank to rely on baffle 1 to erect at the oil tank top.
As shown IN fig. 2, IN the temperature acquisition display module 3, two ends of the sampling resistor 6 are respectively connected IN parallel with the positive and negative electrodes of the input terminal 5 and the capacitor C1, two ends of the capacitor C1 are also respectively connected to the input IN and G terminals of the amplifier 7, the output OUT and G terminals of the amplifier 7 are connected to two ends of the capacitor C2, two ends of the capacitor C2 are also respectively connected to the P1.0 pin and the ground of the single chip microcomputer 8, the P2.3 pin of the single chip microcomputer 8 is connected to the key control module 9, the P0.0, P0.1, P0.2, P0.3, P0.4, P0.5, P0.6, P0.7, P2.0, P2.1, P2.2, P2.3 pins of the single chip microcomputer 8 are respectively connected to pins a, b, C, D, e, f, G, dp, P64, P2, P3, P4, the VDD, VSS, and VDD pins of the power supply module 11 of the single chip microcomputer 8 are respectively connected to the positive and negative electrode of the rectifier 11 and the output terminal of the single chip microcomputer 8 are also connected to the display module VDD, the VSS terminal is grounded, and the input terminal of the transformer L1 of the power module 11 is connected to two terminals of the control power supply 10.
The temperature acquisition display module 3 has the functions of: the current amount of 4-20mA output by a transmitter 14 in the transformer winding temperature controller is collected, and the current amount is converted into the transformer winding temperature value which needs to be measured through calculation. The 4-20mA current output by the transformer winding temperature controller is led into an input terminal 5, the direct current milliampere quantity is converted into a micro-voltage signal through a sampling resistor 6, the voltage signal is amplified through an amplifier 7 and then is input into a single chip microcomputer 8, the voltage signal is subjected to logic operation and A/D conversion in the single chip microcomputer 8, the voltage signal is converted into a digital signal to be output and sent into a nixie tube display module 12, and finally, the transformer winding temperature value corresponding to the corresponding milliampere quantity can be displayed. The key control module 9 in the figure is used for performing constant value input and display function switching control on the temperature acquisition display module. The control power supply 10 selects a common 220V alternating current voltage source, the 220V alternating current voltage is input into the power supply module 11, and the 220V voltage is converted into a 3.3V direct current voltage signal for the temperature acquisition and display module to use through voltage transformation and rectification.
The inner diameter of the oil pipe 2 is larger than the outer diameter of the thermal bulb casing 19, the length of the thermal bulb casing 19 is larger than that of the thermal bulb casing 19, and the thermal bulb casing 19 is located in a closed environment. The winding temperature controller comprises a corrugated pipe 13, a transmitter 14, a temperature compensation heating wire 17, a temperature sensing probe 18 and a temperature-sensitive jacket pipe 19.
As shown in fig. 3, the invention further provides a calibration method of the probe heating type transformer winding temperature controller calibration device, which comprises the following steps:
and 3, connecting the 4-20mA output of the transmitter 14 to an input terminal 5, connecting the 220V alternating current control power supply to the power supply module 11, and starting to verify the winding temperature controller.
The present invention has been described in detail with reference to the embodiments, but the present invention is not limited to the embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art. The prior art can be adopted in the content which is not described in detail in the invention.
Claims (10)
1. The utility model provides a probe adds fever type transformer winding temperature controller calibration equipment which characterized in that: the device comprises a baffle (1), an oil pipe (2), a temperature acquisition display module (3) and an oil tank (4), wherein the oil pipe (2) is vertically connected with the baffle (1), the temperature acquisition display module (3) is fixed on the baffle (1), the oil pipe (2) is vertically inserted into the oil tank (4), and the oil tank (4) top is erected through the baffle (1).
2. The apparatus of claim 1, wherein the probe heating type transformer winding temperature controller calibration device comprises: the baffle (1) is circular, and a circular hole is formed in the center.
3. The apparatus of claim 2, wherein the probe heating type transformer winding temperature controller calibration device comprises: the central hole of the baffle (1) is connected with the top of the oil pipe (2) in a sealing welding mode.
4. The apparatus of claim 3, wherein the probe heating type transformer winding temperature controller calibration device comprises: the temperature acquisition display module (3) is fixed on the baffle (1) by adopting an adhesive.
5. The apparatus of claim 4, wherein the probe heating type transformer winding temperature controller calibration device comprises: the top of the oil tank (4) is provided with a round hole, and the aperture of the round hole is larger than the diameter of the oil pipe (2) and smaller than the diameter of the baffle (1).
6. The apparatus of claim 5, wherein the probe heating type transformer winding temperature controller calibration device comprises: the inner diameter of the oil pipe (2) is larger than the outer diameter of the thermal bulb casing (19), and the length of the oil pipe is larger than the length of the thermal bulb casing (19).
7. The apparatus of claim 6, wherein the probe heating type transformer winding temperature controller calibration device comprises: the oil pipe (2) is made of copper.
8. The apparatus of claim 7, wherein the probe heating type transformer winding temperature controller calibration device comprises: the baffle (1) is made of copper.
9. The apparatus of claim 8, wherein the probe heating type transformer winding temperature controller calibration device comprises: two ends of a sampling resistor (6) IN the temperature acquisition display module (3) are respectively connected with a positive electrode and a negative electrode of an input terminal (5) and a capacitor C1 IN parallel, two ends of a capacitor C1 are connected with an input IN terminal and a G terminal of an amplifier (7), an output OUT terminal and a G terminal of the amplifier (7) are connected with two ends of a capacitor C2, two ends of a capacitor C2 are respectively connected with a P1.0 pin of a singlechip (8) and a ground, a P2.3 pin of the singlechip (8) is connected with a key control module (9), P0.0, P0.1, P0.2, P0.3, P0.4, P0.5, P0.6, P0.7, P2.0, P2.1, P2.2 and P2.3 pins of the singlechip (8) are respectively connected with a pin, b, C, D, e, f, G, P1, P2, P63, P2.3 pin 4, a pin of a power supply pin (VSS) of a nixie, a pin (8) of a power supply pin (80) of a nixie display module (12) and a pin of a cathode pin (VDD) and a pin (78) of the singlechip (8), the VSS end is grounded, and the input end of a transformer L1 of the power supply module (11) is connected with two ends of the control power supply (10).
10. A method of calibrating a probe-heated transformer winding thermostat calibration device according to any one of claims 1 to 9, the method comprising the steps of:
step 1, a corrugated pipe (13) extends into a side opening of a transmitter (14), a temperature bulb sleeve (19) extends out of a lower opening of the transmitter (14), a nut I (15) is used for locking and fixing the corrugated pipe, a temperature sensing probe (18) is inserted into the temperature bulb sleeve (19), and a temperature compensation heating wire (17) is wound inside the temperature bulb sleeve (19);
step 2, injecting silicone oil into an oil pipe (2) of the temperature controller checking device, then inserting a temperature-wrapped sleeve (19) into the oil pipe (2) of the temperature controller checking device, locking a nut II (16), injecting silicone oil into an oil tank (4), and inserting the oil pipe (2) into the oil tank (4);
and 3, connecting the 4-20mA output of the transmitter (14) to an input terminal (5), connecting the 2V alternating current control power supply to a power supply module (11), and starting to verify the winding temperature controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010652443.4A CN111813082A (en) | 2020-07-08 | 2020-07-08 | Probe heating type transformer winding temperature controller calibration device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010652443.4A CN111813082A (en) | 2020-07-08 | 2020-07-08 | Probe heating type transformer winding temperature controller calibration device and method |
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| CN111813082A true CN111813082A (en) | 2020-10-23 |
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| CN202010652443.4A Pending CN111813082A (en) | 2020-07-08 | 2020-07-08 | Probe heating type transformer winding temperature controller calibration device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114136496A (en) * | 2021-10-21 | 2022-03-04 | 国网浙江省电力有限公司金华供电公司 | Portable temperature calibration device |
| WO2024187836A1 (en) * | 2023-03-16 | 2024-09-19 | 江苏核电有限公司 | Nuclear power plant transformer oil surface temperature alarm checking apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103135625A (en) * | 2011-11-23 | 2013-06-05 | 西安博昱新能源有限公司 | Temperature control system of aging cabinet of electronic product |
| CN204009628U (en) * | 2014-06-23 | 2014-12-10 | 大连新安越电力设备有限公司 | A kind of transformer winding temperature controller |
| CN205446276U (en) * | 2015-12-30 | 2016-08-10 | 上海板机液压设备有限公司 | A thermometer structure for measuring oil in hydraulic power unit oil tank is warm |
| CN212515465U (en) * | 2020-07-08 | 2021-02-09 | 江苏核电有限公司 | Probe heating type transformer winding temperature controller calibration device |
-
2020
- 2020-07-08 CN CN202010652443.4A patent/CN111813082A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103135625A (en) * | 2011-11-23 | 2013-06-05 | 西安博昱新能源有限公司 | Temperature control system of aging cabinet of electronic product |
| CN204009628U (en) * | 2014-06-23 | 2014-12-10 | 大连新安越电力设备有限公司 | A kind of transformer winding temperature controller |
| CN205446276U (en) * | 2015-12-30 | 2016-08-10 | 上海板机液压设备有限公司 | A thermometer structure for measuring oil in hydraulic power unit oil tank is warm |
| CN212515465U (en) * | 2020-07-08 | 2021-02-09 | 江苏核电有限公司 | Probe heating type transformer winding temperature controller calibration device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114136496A (en) * | 2021-10-21 | 2022-03-04 | 国网浙江省电力有限公司金华供电公司 | Portable temperature calibration device |
| WO2024187836A1 (en) * | 2023-03-16 | 2024-09-19 | 江苏核电有限公司 | Nuclear power plant transformer oil surface temperature alarm checking apparatus |
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