CN109506797A - A kind of transforming plant main transformer oil temperature integrated testing device - Google Patents
A kind of transforming plant main transformer oil temperature integrated testing device Download PDFInfo
- Publication number
- CN109506797A CN109506797A CN201811623527.4A CN201811623527A CN109506797A CN 109506797 A CN109506797 A CN 109506797A CN 201811623527 A CN201811623527 A CN 201811623527A CN 109506797 A CN109506797 A CN 109506797A
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- module
- output
- main transformer
- transformer oil
- control
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/028—Means for indicating or recording specially adapted for thermometers arrangements for numerical indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/005—Calibration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/007—Testing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a kind of transforming plant main transformer oil temperature integrated testing devices, it is related to network system Substation Automation System field, it include: control module, and the thermometer AM access module, resistance output module, current acquisition module, current output module and the measurement and control signal AM access module that are connect with control module.Test device of the invention can verify main transformer oil meter and its full loop in substation, and defect location can be improved, and shorten the elimination defect time of main transformer oil meter full loop in substation.
Description
Technical field
The present invention relates to network system Substation Automation System fields, and in particular to a kind of transforming plant main transformer detection oil
Warm integrated testing device.
Background technique
Main transformer temperature meter is the critical elements of transformer detection temperature change, is used for measuring transformer pasta, coil windings
Or the temperature of internal a certain position, and corresponding cooling device, warning device can be controlled according to this temperature value.Main transformer temperature meter
Temperature variations real-time perfoming transformer Cooling, alarm according to transformer, operational reliability directly influence transformer
Operational safety.
To guarantee main transformer temperature meter reliability service, electric power overhaul department is needed according to regulatory requirements periodically to main transformer temperature meter
(including oil thermometer) and its full loop are verified.It is verified at present using multimeter and variable rheostat, but in use process
In have the following problems: (1) multimeter sound is small, scene it is noisy when it is not noticeable.(2) test pencil of multimeter connects with measurement contact
It touches unstable, and leads to measure resistance inaccuracy there are situations such as screw corrosion and measurement contact test malunion is true shows
As.(3) control " industrial platinum resistance thermometer sensor, phasing meter " is needed to be tested using variable rheostat, as a result inadequate visual influence eliminates defect speed
Degree.
Summary of the invention
It is an object of that present invention to provide a kind of transforming plant main transformer oil temperature integrated testing devices, can be to main transformer in substation
Oil thermometer and its full loop are verified, and defect location can be improved, and shorten the elimination of main transformer oil meter full loop in substation
The defect time.
Present invention provide the technical scheme that
A kind of transforming plant main transformer oil temperature integrated testing device, comprising: control module, and the temperature being separately connected with control module
The AM access module of degree meter, resistance output module, current acquisition module, current output module and measurement and control signal AM access module.
Further, the thermometer AM access module is connect with main transformer temperature meter output end, by measuring based on main transformer temperature
Resistance；The input terminal of the resistance output module and temperature transmitter connection, by replacing the output resistance based on main transformer temperature；
The output end of the current acquisition module and temperature transmitter connection, for measuring the output electric current of temperature transmitter；The electricity
The input terminal for flowing output module and measure and control device connects, for replacing the output electric current of temperature transmitter；The measurement and control signal connects
The output end for entering module and measure and control device connects, for measuring the output state of measure and control device.
In one embodiment of the technical solution, the indicator light including link control module output end, control module is led to
The output state of indicator light output measure and control device is crossed, the output state includes the alarm of main transformer oil table, trips and start air-cooled
Node.
In one embodiment of the technical solution, the display including link control module, control module passes through display
The measured value of the device AM access module of output temperature meter and current acquisition module.
In one embodiment of the technical solution, the first regulating member and the second adjustment portion including link control module
Part, control module adjust the output valve of resistance output module by the first regulating member, adjust electric current by the second regulating member
The output valve of output module.Advanced optimizing for the embodiment is, the display including link control module, control module
Pass through the output valve of display output resistance output module and current output module.
Advanced optimizing for above-mentioned technical proposal is: including the internal shell for being equipped with power module, the control mould
Block, thermometer AM access module, resistance output module, current acquisition module, current output module and measurement and control signal AM access module are set
It sets in shell.
Further optimization also resides in: including the aviation plug being arranged on shell and the test wire that can connect aviation plug
Beam, the thermometer AM access module, resistance output module, current acquisition module, current output module and measurement and control signal access mould
Block is connect by test wire with main transformer temperature meter, temperature transmitter or measure and control device.
In one embodiment based on the above-mentioned technical proposal, the power module includes rechargeable battery.
In one embodiment based on the above-mentioned technical proposal, the power module includes rectification unit, and power module connects
Ground wire is led to outside shell after connecting with shell.
One aspect of the present invention has the benefit that the output end of measure and control device, i.e. external action node, connects
Enter test device of the invention, the indicator light of lamp device corresponding states when node action is more intuitively avoided because of live noise
It is miscellaneous to cause test result inaccuracy phenomenon.
One aspect of the present invention has the benefit that test device of the invention can be controlled by software configuration
Test device carries out resistance measurement and output and the measurement of low current signal and output, can test main transformer temperature meter, temperature
It spends transmitter and whether measure and control device is normal.
One aspect of the present invention has the benefit that test harness of the invention is installed using aviation plug, peace
Fill it is stronger, test harness contact it is even closer, can be to avoid the appearance of test error.
Detailed description of the invention
Fig. 1 is the system block diagram of one embodiment of the invention；
Fig. 2 is the panel schematic diagram of shell in one embodiment of the invention；
Fig. 3 is that harness connection schematic diagram is tested in one embodiment of the invention；
Fig. 4 uses functional schematic for one embodiment of the invention；
Wherein, 100, shell, 101, control module, 102, thermometer AM access module, 103, resistance output module, 104, electric current adopts
Collect module, 105, current output module, 106, measurement and control signal AM access module, 107, indicator light, 108, display, 109, charging end
Son, 110, power supply terminal, 111, switch, 112, ground terminal, the 121, first plug, the 122, second plug, 123, third plug,
130, harness, 131, buckle-type connecting pin, 200, main transformer temperature meter, 201, temperature transmitter, 202, measure and control device are tested.
Specific embodiment
Further clear and complete explanation is made to technical solution of the present invention combined with specific embodiments below.
First it should be noted that multiple main transformer temperature meters can be arranged in different location in a transforming plant main transformer, often
A main transformer temperature meter is connected by temperature transmitter with corresponding measure and control device, and main transformer temperature meter is usually the resistive biography such as Pt100
Sensor is converted to the standard current signal teletransmission of 4-20mA to measure and control device by temperature transmitter, and measure and control device is according to setting
It is worth and corresponding control signal is exported by dry contact, control signal includes that main transformer oil table alerts, trips and start air-cooled node
Deng.During construction personnel's maintenance repair or eliminating failure, clearly specific fault point is needed, such as points out specific main transformer temperature
Degree meter, specific temperature transmitter or measure and control device specifically fail dry contact.So the component of main transformer temperature meter full loop
Including main transformer temperature meter, temperature transmitter and measure and control device.
Embodiment one
As shown in Figure 1, 2, 3, the present embodiment is a kind of transforming plant main transformer oil temperature integrated testing device, including host and for connecting
Connect the test harness 130 of each component in host and main transformer temperature meter full loop.Control module is provided in the shell 100 of host
101, and connect with control module 101 thermometer AM access module 102, resistance output module 103, current acquisition module 104,
Current output module 105, measurement and control signal AM access module 106 and the power module for host supplying power.Finger is provided on shell 100
Show lamp 107(i.e. L1, L2, L3, L4), display 108, charging terminal 109, power supply terminal 110, switch 111, ground terminal 112,
Three aviation plugs (the first plug 121, the second plug 122 and third plug 123).Wherein the state of indicator light 107 is by controlling
Module 101 controls, and the display content of display 108 is exported by control module 101.Charging terminal 109 and filling in power module
Battery connection, power supply terminal 110 are connect by switch 111 with the input terminal of rectification module in power module, specific, rectification
Module is sequentially connected rectifier bridge and DC-DC voltage stabilizing chip, ground wire and shell in ground terminal 112 and power module
The connection of 101 no resistances.101 kinds of control module include a MCU chip for storing program and running program according to configuration.
As shown in figure 4, the operation logic of the present embodiment is: before the test, each in main transformer temperature meter full loop specific first
Connecting wire between a component；Thermometer AM access module 102 includes a constant-current source, the input of thermometer AM access module 102
End is connect with the output end of main transformer temperature meter 200, converts voltage for the output resistance of main transformer temperature meter 200 by constant-current source,
The voltage input control module 101 is tabled look-up to obtain corresponding resistance value and in display according to storage inside by control module 101
The resistance value, the i.e. output resistance of thermometer AM access module 102 are shown on 108；Resistance output module 105 specifically can be one
A electronics adjustable resistance, output end are connect with the input terminal of temperature transmitter 201, and electronics adjustable electric is arranged in control module 101
The output resistance of resistance is identical as the output resistance of main transformer temperature meter 200, by replacing based on main transformer temperature 200 output resistance to provide
To temperature transmitter 201；Current acquisition module 104 includes a current-voltage conversion circuit, input terminal and temperature transmitter
201 output end connection, the output electric current of temperature transmitter is measured for control module 101, the output electric current is also by display
Device 108 is shown；Current output module 105 includes a tabilized current power supply, and control module 101 can by the control of analog output end
The output electric current for adjusting constant-current source, keeps the output electric current identical as the output electric current of temperature transmitter 201, current output terminal and survey
The input terminal connection for controlling device 202, for replacing the output electric current of temperature transmitter；Measurement and control signal AM access module 106 can wrap
Multiple pull-up resistors are included, are connect respectively with the output end dry contact of measure and control device 202, measurement and control signal AM access module 106 is by stem grafting
Point signal is converted into the digital quantity input terminal that voltage signal is transferred to control module 101, for measuring the output shape of measure and control device
State, output state give display output by indicator light 107.The output state that can be shown include main transformer oil table alarm,
It trips and starts air-cooled node.Control module 101 passes through 108 output temperature meter AM access module of display and electric current in the present embodiment
The measured value of acquisition module, measured value include corresponding resistance and electric current.
As shown in Fig. 2, the first plug 121 is connect with thermometer AM access module 102 in shell 100, and is led in the present embodiment
The first test harness is crossed to connect with main transformer temperature meter 200；Second plug 122 and the resistance output module 103 and electricity in shell 100
It flows acquisition module 104 to connect, and is connect by the second test harness with temperature transmitter 201；Third plug 123 and shell 100
Interior current output module 105 and measurement and control signal AM access module 106 connect, and test harness and the company of measure and control device 202 by third
It connects.By above-mentioned setting, the present embodiment realizes host by independent aviation plug and tests harness and corresponding main transformer temperature
The independent connection of the parts to be tested in degree meter full loop.Specifically, as shown in figure 3, the test harness 130 of the present embodiment and aviation are inserted
Head connection one end be buckle-type connecting pin 131, the other end it is per share test harness in core be connected with one for clamp connect
The crocodile clip of line end.
Embodiment two
The present embodiment is a kind of transforming plant main transformer oil temperature integrated testing device, and the difference with embodiment one is: the present embodiment
On the shell of host, it is additionally provided with the first regulating member and the second regulating member of link control module, specifically, first is adjusted
Component and the second regulating member are the electrical adjustment knob that output counts pulse, and control module adjusts electricity by the first regulating member
The output valve of output module is hindered, rather than controls the resistance that resistance output module exports main transformer temperature meter always, is adjusted by second
The output valve that component adjusts current output module is saved, rather than controls the output of current output module output temperature transmitter always
Current value.Meanwhile on the display of link control module, control module passes through display output resistance output module and electric current
The real-time output valve of output module.
The embodiment of the present invention can verify main transformer oil meter and its full loop in substation.It will be outside measure and control device
Portion's movement dry contact accesses test device of the invention, lights output state respective leds when dry contact movement, more
Add it is intuitive, avoid because scene it is noisy caused by test result inaccuracy phenomenon.The device carries out resistance value by software controlled machine
Whether input and output and low current signal input and output, can test main transformer temperature meter, temperature transmitter and measure and control device
Normally, defect location can be greatly improved, the defect elimination time is shortened.The instrument test line is installed using aviation plug, and installation is more
Securely, test wire contact is even closer, avoids the appearance of test error.
Main transformer oil integrated testing device has following functions:
1, main transformer temperature measurement pinged tetra- indicator lights of L1, L2, L3, L4 and alerts, trips and open air-cooled to main transformer oil table
Node is shown, lights indicator light when respective nodes closure, more intuitively.
2, main transformer oil integrated testing device has resistance test function, can be with external oil temperature gauge output resistance simultaneously
Show that corresponding temperature numerical value to verify oil temperature list index indicates whether that normally, it is accordingly warm oil temperature gauge can be verified by liquid crystal display
Whether correct spend lower resistance output numerical value.
3, main transformer oil integrated testing device has simulation oil temperature gauge resistance output function.Pass through software control instrument
It exports specified resistance value and shows corresponding temperature under current resistance, bypass oil temperature gauge to temperature transmitter and measure and control device in standing
It is verified.
4, main transformer oil integrated testing device has 4-20ma low current input function, and signal is converted directly into
Temperature value carries out liquid crystal display, and whether can verifying oil temperature gauge, that low current signal is exported under corresponding temperature is correct.
5, main transformer oil integrated testing device has 4-20ma low current output function.It is defeated by software control instrument
Low current signal is specified out and shows Current Temperatures numerical value, bypasses oil temperature gauge and temperature transmitter in standing and measure and control device are carried out
Verification.
Above-mentioned function can carry out full loop verifying to oil temperature equipment is related in oil temperature gauge and station, make oil temperature defect processing
It is more clear, Flaw discrimination is more accurate.
Claims (10)
1. a kind of transforming plant main transformer oil temperature integrated testing device characterized by comprising control module, and with control mould
Thermometer AM access module, resistance output module, current acquisition module, current output module and the measurement and control signal that block is separately connected connect
Enter module.
2. a kind of transforming plant main transformer oil temperature integrated testing device according to claim 1, it is characterised in that: the temperature
Meter AM access module is connect with main transformer temperature meter output end, by measuring the resistance based on main transformer temperature；The resistance output module with
The input terminal of temperature transmitter connects, by replacing the output resistance based on main transformer temperature；The current acquisition module and temperature become
The output end of device is sent to connect, for measuring the output electric current of temperature transmitter；The current output module and measure and control device it is defeated
Enter end connection, for replacing the output electric current of temperature transmitter；The output end of the measurement and control signal AM access module and measure and control device
Connection, for measuring the output state of measure and control device.
3. a kind of transforming plant main transformer oil temperature integrated testing device according to claim 2, it is characterised in that: including connection
The indicator light of control module output end, control module export the output state of measure and control device, the output state by indicator light
Air-cooled node is alerted, trips and started including main transformer oil table.
4. a kind of transforming plant main transformer oil temperature integrated testing device according to claim 2, it is characterised in that: including connection
The display of control module, control module pass through the measured value of the AM access module of display output temperature meter and current acquisition module.
5. a kind of transforming plant main transformer oil temperature integrated testing device according to claim 2, it is characterised in that: including connection
The first regulating member and the second regulating member of control module, control module adjust resistance output module by the first regulating member
Output valve, pass through the second regulating member adjust current output module output valve.
6. a kind of transforming plant main transformer oil temperature integrated testing device according to claim 5, it is characterised in that: including connection
The display of control module, control module pass through the output valve of display output resistance output module and current output module.
7. a kind of transforming plant main transformer oil temperature integrated testing device according to any one of claims 1 to 6, feature exist
In: including the internal shell for being equipped with power module, the control module, thermometer AM access module, resistance output module, electric current are adopted
Collect module, current output module and measurement and control signal AM access module to be arranged in shell.
8. a kind of transforming plant main transformer oil temperature integrated testing device according to claim 7, it is characterised in that: including setting
Aviation plug on shell and the test harness that aviation plug can be connected, the thermometer AM access module, resistance output module,
Current acquisition module, current output module and measurement and control signal AM access module pass through test wire and main transformer temperature meter, temperature transmitter
Or measure and control device connection.
9. a kind of transforming plant main transformer oil temperature integrated testing device according to claim 8, it is characterised in that: the power supply
Module includes rechargeable battery.
10. a kind of transforming plant main transformer oil temperature integrated testing device according to claim 8, it is characterised in that: the electricity
Source module includes rectification unit, and the ground line of power module is led to outside shell after connecting with shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811623527.4A CN109506797A (en) | 2018-12-28 | 2018-12-28 | A kind of transforming plant main transformer oil temperature integrated testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811623527.4A CN109506797A (en) | 2018-12-28 | 2018-12-28 | A kind of transforming plant main transformer oil temperature integrated testing device |
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| Publication Number | Publication Date |
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| CN109506797A true CN109506797A (en) | 2019-03-22 |
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| CN201811623527.4A Pending CN109506797A (en) | 2018-12-28 | 2018-12-28 | A kind of transforming plant main transformer oil temperature integrated testing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111814302A (en) * | 2020-05-28 | 2020-10-23 | 嘉兴市恒光电力建设有限责任公司 | Fault removing system and method for transformer insulating oil temperature acquisition and transmission loop |
| 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 |
| 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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