CN108957193A - A kind of self-regulation power supply and transformer device for testing temperature rise - Google Patents
A kind of self-regulation power supply and transformer device for testing temperature rise Download PDFInfo
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- CN108957193A CN108957193A CN201810863891.1A CN201810863891A CN108957193A CN 108957193 A CN108957193 A CN 108957193A CN 201810863891 A CN201810863891 A CN 201810863891A CN 108957193 A CN108957193 A CN 108957193A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
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- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a kind of self-regulation power supply and transformer device for testing temperature rise, comprising: the reception device of the phase instruction of the temperature rise test for receiving transformer；Input terminal connect with power grid, the voltage regulating device of the feeder ear connection of output end and transformer；For the input voltage of real-time detection transformer and the detection circuit of input current；The controller being connect respectively with the control terminal of the output end of reception device, detection circuit and voltage regulating device；Controller is used for the input voltage and input current current according to transformer, and control voltage regulating device adjusts its output voltage, so that its total losses power for corresponding to phase instruction application on the transformer or electric current are constantly maintained at corresponding preset rules value.As it can be seen that the application can also be such that the maximum total losses power applied on the transformer or rated current keeps constant, to improve the accuracy of temperature rise test result even if the coil windings of transformer impedance value after heating power changes with adjust automatically.
Description
Technical field
The present invention relates to transformer testing fields, more particularly to a kind of self-regulation power supply and transformer temperature rise test dress
It sets.
Background technique
Currently, the temperature rise test of transformer is divided into two stages: first stage, apply maximum total losses function for transformer
Rate；Second stage applies rated current for transformer.Its test objective is the temperature rise feelings for examining transformer under specified states
Condition, the performance under Warm status to determine transformer.In the prior art, manual adjustment mode is generallyd use, is adjusted in transformer
The total losses power or electric current of upper application, reach specified value (it is corresponding with the capacity of transformer maximum total losses power or
Rated current).But the coil windings of transformer, after heating power, impedance value can change, and lead to the electricity of transformer
Pressure and curent change, cannot keep so as to cause the maximum total losses power or rated current applied on the transformer it is constant, into
And reduce the accuracy of temperature rise test result.
Therefore, how to provide a kind of scheme of solution above-mentioned technical problem is that those skilled in the art needs to solve at present
The problem of.
Summary of the invention
The object of the present invention is to provide a kind of self-regulation power supply and transformer device for testing temperature rise, even if the coil of transformer
For winding after heating power, the variation of impedance value causes the maximum total losses power or rated current applied on the transformer to become
Change, the application can also be such that the maximum total losses power applied on the transformer or rated current keeps constant, i.e., with adjust automatically
Automatic control is realized using negative feedback control mode, to improve the accuracy of temperature rise test result.
In order to solve the above technical problems, the present invention provides a kind of self-regulation power supplys, comprising:
The reception device of the phase instruction of temperature rise test for receiving transformer；
The voltage regulating device that input terminal is connect with power grid, output end is connect with the feeder ear of the transformer；
For the input voltage of transformer described in real-time detection and the detection circuit of input current；
It is connect respectively with the control terminal of the output end of the reception device, the detection circuit and the voltage regulating device
Controller；The controller is used for the input voltage and input current current according to the transformer, controls the voltage tune
Regulating device adjusts its output voltage, so that it corresponds to the total losses power or electricity that the phase instruction applies on the transformer
Stream is constantly maintained at corresponding preset rules value.
Preferably, the voltage regulating device includes that voltage adjusts motor, three-phase regulator and the connection voltage adjusting
The transmission device of motor and the three-phase regulator；Wherein:
The voltage adjusts control terminal of the input terminal of motor as the voltage regulating device, the three-phase regulator
Input terminal and output end mutually should be used as the input terminal and output end of the voltage regulating device；
Then the controller is specifically used for the input voltage and input current current according to the transformer, controls the electricity
Pressure adjusts the rotational angle displacement of motor, drives the drive by it, adjusts the output electricity of the three-phase regulator
Pressure so that its total losses power for correspond to phase instruction application on the transformer or electric current be constantly maintained at it is corresponding
Preset rules value.
Preferably, the detection circuit includes:
The threephase potential transformer of input voltage for transformer described in real-time detection or three single-phase potential transformers；
The threephase current transformer of input current for transformer described in real-time detection or three single-phase current transformers；
For the voltage signal of real-time detection and current signal to be converted into the analog-digital converter of digital signal.
Preferably, the reception device is specially touch screen.
Preferably, the controller is also connect with the input terminal of the touch screen, in real time that the transformer is current
Input voltage, input current, total losses power and input average current export to the touch screen and show.
Preferably, the controller is specially programmable logic controller (PLC) PLC controller.
Preferably, which further includes controllable switch device and the connecting terminal temperature for acquiring the transformer
The temperature collecting device of degree；
The controller is also used to control the controllable switch device when the connecting terminal temperature is greater than preset temperature
It disconnects, so that the voltage regulating device stops being the transformer-supplied, realization device self-shield.
Preferably, the controllable switch device is specially protective breaker.
Preferably, the temperature collecting device is specially digital temperature Acquisition Instrument.
In order to solve the above technical problems, the present invention also provides a kind of transformer device for testing temperature rise, including it is any of the above-described
Kind self-regulation power supply.
The present invention provides a kind of self-regulation power supplys, comprising: the phase instruction of the temperature rise test for receiving transformer
Reception device；Input terminal connect with power grid, the voltage regulating device of the feeder ear connection of output end and transformer；For examining in real time
Survey the input voltage of transformer and the detection circuit of input current；Respectively with the output end of reception device, detection circuit and voltage
The controller of the control terminal connection of regulating device；Controller is used for the input voltage and input current current according to transformer, control
Voltage regulating device processed adjusts its output voltage, so that its total losses power or electricity for corresponding to phase instruction application on the transformer
Stream is constantly maintained at corresponding preset rules value.
In the temperature rise test of transformer, the application is electric by the input voltage of detection circuit real-time detection transformer and input
Stream, and by controller according to detection signal, the corresponding total losses power or electricity applied on the transformer is calculated in the corresponding stage
Stream, and by it compared with corresponding specified value (maximum total losses power or rated current that the capacity according to transformer is arranged),
If there is error therebetween, the corresponding voltage regulating device that controls adjusts its output voltage, on the transformer so as to adjust it
The total losses power or electric current of application are to reduce error.Therefore, even if the coil windings of transformer are after heating power, impedance
The variation of value causes the maximum total losses power or rated current applied on the transformer to change, and the application can also adjust automatically
It is whole, keep constant the maximum total losses power applied on the transformer or rated current, i.e., it is real using negative feedback control mode
It now automatically controls, to improve the accuracy of temperature rise test result.
The present invention also provides a kind of transformer device for testing temperature rise, having the same beneficial to effect with above-mentioned self-regulation power supply
Fruit.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to institute in the prior art and embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of power supply that is self-regulated provided by the invention；
Fig. 2 is the structural schematic diagram of another self-regulation power supply provided by the invention.
Specific embodiment
Core of the invention is to provide a kind of self-regulation power supply and transformer device for testing temperature rise, even if the coil of transformer
For winding after heating power, the variation of impedance value causes the maximum total losses power or rated current applied on the transformer to become
Change, the application can also be such that the maximum total losses power applied on the transformer or rated current keeps constant, i.e., with adjust automatically
Automatic control is realized using negative feedback control mode, to improve the accuracy of temperature rise test result.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Fig. 1 is please referred to, Fig. 1 is a kind of structural schematic diagram of power supply that is self-regulated provided by the invention.
The self-regulation power supply includes:
The reception device 1 of the phase instruction of temperature rise test for receiving transformer；
Input terminal connect with power grid, the voltage regulating device 2 of the feeder ear connection of output end and transformer；
For the input voltage of real-time detection transformer and the detection circuit 3 of input current；
The controller being connect respectively with the control terminal of the output end of reception device 1, detection circuit 3 and voltage regulating device 2
4；Controller 4 is used for the input voltage and input current current according to transformer, and control voltage regulating device 2 adjusts its output electricity
Pressure, so that its total losses power for corresponding to phase instruction application on the transformer or electric current are constantly maintained at corresponding preset rules
Value.
It should be noted that default in the application sets in advance, it is only necessary to which setting is primary, unless according to reality
Situation needs to modify, and does not otherwise need to reset.
Specifically, self-regulation power supply provided by the present application include: reception device 1, voltage regulating device 2, detection circuit 3 and
Controller 4, all components may be mounted in a metal shell.Self-regulation power supply working principle include:
1) reception device 1 receives the phase instruction that tester sends, and sends it to controller 4；Wherein, the stage refers to
The experimental stage carried out needed for the temperature rise test that represent transformer is enabled, according to experiment process, tester first sends the first rank
Duan Zhiling (corresponding experimental stage is to apply maximum total losses power for transformer), it is (corresponding to retransmit second stage instruction
Experimental stage is to apply rated current for transformer).
2) controller 4 sets maximum total losses power corresponding with the capacity of transformer to be tested and specified electricity in advance
It flows (i.e. preset rules value), after receiving first stage instruction, control voltage regulating device 2 adjusts its output voltage (electricity
What pressure regulating device 2 was adjusted is the three-phase voltage of power grid, and the voltage after adjusting is supplied to transformer), to make voltage tune
Regulating device 2 applies corresponding maximum total losses power on the transformer and (is determined by the input voltage and input current of transformer
It is fixed)；After receiving second stage instruction, control voltage regulating device 2 adjusts its output voltage for it, so that voltage be made to adjust dress
It sets 2 and applies corresponding rated current on the transformer；As it can be seen that reception device 1 and controller 4 collectively constitute control transformer
The control unit of temperature rise test.
3) during transformer carries out temperature rise test, the input voltage of 3 real-time detection transformer of detection circuit and defeated
Enter electric current (output voltage and output electric current that are equal to detection voltage regulating device 2), and will test signal and be sent to controller
4。
If 4) in the first stage of temperature rise test, controller 4 after the input voltage and input current for receiving transformer,
Calculate the total losses power currently applied on the transformer according to set total losses power algorithm, and by current total losses function
Rate is made comparisons with the maximum total losses power of setting, if the two is equal, is adjusted without controlling voltage regulating device 2；If
The two is unequal, then automatically controls voltage regulating device 2 and adjust its output voltage, to adjust the total losses power of transformer to setting
The maximum total losses power set；
If controller 4 is pressed after the input voltage and input current for receiving transformer in the second stage of temperature rise test
According to the current nominal electric current that set rated current algorithm is applied on the transformer, by the volume of current nominal electric current and setting
Constant current is made comparisons, if the two is equal, is adjusted without controlling voltage regulating device 2；It is automatic to control if the two is unequal
Voltage regulating device 2 processed adjusts its output voltage, to adjust the current nominal electric current of transformer to the rated current of setting；
In general, here equal is not equal in absolute sense, and a threshold value can be set in the application, works as meter
When the absolute value of difference between the total losses power of calculation and the maximum total losses power of setting is less than or equal to set threshold value, just recognize
It is equal for the two, with should the absolute value of difference between received electric current and the rated current of setting be less than or equal to set threshold value
When, just think that the two is equal, prevents the output of voltage regulating device 2 is unstable from controller 4 being caused to be constantly in state of a control (i.e.
Voltage regulating device 2 constantly regulate).
As it can be seen that the variation of impedance value causes to apply on the transformer even if the coil windings of transformer are after heating power
Maximum total losses power or the rated current variation added, the application can also make the maximum applied on the transformer with adjust automatically
Total losses power or rated current are kept constant, to improve the accuracy of temperature rise test result.
The present invention provides a kind of self-regulation power supplys, comprising: the phase instruction of the temperature rise test for receiving transformer
Reception device；Input terminal connect with power grid, the voltage regulating device of the feeder ear connection of output end and transformer；For examining in real time
Survey the input voltage of transformer and the detection circuit of input current；Respectively with the output end of reception device, detection circuit and voltage
The controller of the control terminal connection of regulating device；Controller is used for the input voltage and input current current according to transformer, control
Voltage regulating device processed adjusts its output voltage, so that its total losses power or electricity for corresponding to phase instruction application on the transformer
Stream is constantly maintained at corresponding preset rules value.
In the temperature rise test of transformer, the application is electric by the input voltage of detection circuit real-time detection transformer and input
Stream, and by controller according to detection signal, the corresponding total losses power or electricity applied on the transformer is calculated in the corresponding stage
Stream, and by it compared with corresponding specified value (maximum total losses power or rated current that the capacity according to transformer is arranged),
If there is error therebetween, the corresponding voltage regulating device that controls adjusts its output voltage, on the transformer so as to adjust it
The total losses power or electric current of application are to reduce error.Therefore, even if the coil windings of transformer are after heating power, impedance
The variation of value causes the maximum total losses power or rated current applied on the transformer to change, and the application can also adjust automatically
It is whole, keep constant the maximum total losses power applied on the transformer or rated current, i.e., it is real using negative feedback control mode
It now automatically controls, to improve the accuracy of temperature rise test result.
Referring to figure 2., Fig. 2 is the structural schematic diagram of another self-regulation power supply provided by the invention, the self-regulation power supply
On the basis of the above embodiments:
As a kind of preferred embodiment, voltage regulating device 2 includes that voltage adjusts motor M, three-phase regulator VR and company
Meet the transmission device T that voltage adjusts motor M and three-phase regulator VR；Wherein:
Voltage adjusts control terminal of the input terminal as voltage regulating device 2 of motor M, the input terminal of three-phase regulator VR and
Output end mutually should be used as the input terminal and output end of voltage regulating device 2；
Then controller 4 is specifically used for the input voltage and input current current according to transformer, and control voltage adjusts motor M
Rotational angle displacement, pass through its drive transmission device T transmission, adjust three-phase regulator VR output voltage so that it is in transformation
The total losses power or electric current that phase instruction application is corresponded on device are constantly maintained at corresponding preset rules value.
Specifically, the voltage regulating device 2 of the application includes that voltage adjusts motor M, three-phase regulator VR and transmission device
T, then voltage Principles of Regulation of voltage regulating device 2 are as follows: the input voltage current according to transformer of controller 4 and input current are raw
At control instruction, and sends it to voltage and adjust motor M；Voltage adjusts the rotation that motor M adjusts itself according to control instruction
Angular displacement, and transmission device T transmission is driven after own rotation, and then drive the adjustable side rotation of three-phase regulator VR, it realizes
The output voltage of three-phase regulator VR is adjusted, that is, realizes the input voltage and input current for adjusting transformer.Wherein, utensil is controlled
For body, including signal acquisition module (receiving transformer current input voltage and input current), data processing module (foundation
Internal algorithm handles corresponding data) and signal output module (output control instruction).
Here three-phase regulator VR can select that voltage regulation limits are 300V to 700V, maximum rated power is
The pressure regulator of 100kW shows that the maximum loss power of transformer can achieve 100kW.The application can be according to tested change
The amount of capacity of depressor is adjusted the voltage regulation limits and power of three-phase regulator VR.
As a kind of preferred embodiment, detection circuit 3 includes:
The threephase potential transformer of input voltage for real-time detection transformer or three single-phase potential transformers；
The threephase current transformer of input current for real-time detection transformer or three single-phase current transformers；
For the voltage signal of real-time detection and current signal to be converted into the analog-digital converter of digital signal.
Specifically, the detection circuit 3 of the application includes voltage detecting circuit VM, current detection circuit CM and analog-to-digital conversion
Device, voltage detecting circuit VM here can select threephase potential transformer, for the three-phase electricity of real-time detection transformer input
Pressure；Three single-phase potential transformers can also be selected, as shown in Fig. 2, three single-phase potential transformer one-to-one correspondence are detected as becoming
The voltage transmitted in the three-phase main line of transformer power-supply, wherein the precision of each single-phase potential transformer is at 0.2 grade or more.
Similarly, current detection circuit CM here can select threephase current transformer, be used to real-time detection transformer
The three-phase current of input；Three single-phase current transformers can also be selected, as shown in Fig. 2, three single-phase current transformers are one by one
The corresponding electric current for being detected as transmitting in the three-phase main line of transformer-supplied, wherein the precision of each single-phase current transformer exists
0.2 grade or more.
At the same time, the voltage signal of real-time detection and current signal are converted into digital signal by analog-digital converter, and
It is input to controller 4, in order to which controller 4 generates control instruction, control according to digital voltage signal, digital current signal
Voltage regulating device 2 adjusts its output voltage.
As a kind of preferred embodiment, reception device 1 is specially touch screen.
Specifically, the reception device 1 of the application can select touch screen, and show in the function selecting area of touch screen
" power " and " electric current ", tester send first stage instruction by clicking " power ", click " electric current " and send second stage
Instruction.In addition, the application can also add the display of " manual " and " automatic " in the function selecting area of touch screen, wherein
" manual " represents manual adjustment, and " automatic " represents the automatic adjustment of controller 4, and tester can pass through click " manual " and " oneself
It is dynamic " switching regulative mode.
Certainly, the reception device 1 of the application can also select other reception devices such as remote controler, and the application is not spy herein
Other restriction.
As a kind of preferred embodiment, controller 4 is also connect with the input terminal of touch screen, in real time working as transformer
Preceding input voltage, input current, total losses power and input average current is exported to touch screen and is shown.
Further, the controller 4 of the application can also in real time by the current input voltage of transformer (three-phase voltage it is every
Phase voltage), input current (every phase current of three-phase current), (three-phase current is averaged for total losses power and input average current
Value) output show to touch screen, for tester's reference.
As a kind of preferred embodiment, controller 4 is specially PLC controller.
Specifically, the controller 4 of the application can be selected but be not limited only to PLC (Programmable Logic
Controller, programmable logic controller (PLC)) controller, the application is not particularly limited herein.
As a kind of preferred embodiment, which further includes controllable switch device QF1 and for acquiring transformation
The temperature collecting device 5 of the connecting terminal temperature of device；
Controller 4 is also used to when connecting terminal temperature is greater than preset temperature, and control controllable switch device QF1 is disconnected, with
Stopping voltage regulating device 2 is transformer-supplied, realization device self-shield.
Further, it is contemplated that transformer (such as winding insulation damage of transformer it is possible that some abnormal conditions
Cause the abnormal conditions such as line short) cause own temperature excessively high, to influence the stability and reliability of self-regulation power supply, sternly
It is likely to injure the safety of tester if weight, so, the self-regulation power supply of the application further includes temperature collecting device 5
With controllable switch device QF1, wherein the effect of controllable switch device QF1: controller 4 passes through control controllable switch device QF1's
Closing or opening, the corresponding three-phase main line realized connection or be cut to transformer-supplied, is equivalent in the every of three-phase main line
One controllable switch of string on one phase line, the switch state for passing through three controllable switches of control change the power supply shape of transformer
State.
Specifically, the temperature for the connecting terminal for acquiring transformer by temperature collecting device 5 first generates temperature digital signal,
And temperature digital signal is sent to controller 4；Controller 4 compares connecting terminal temperature and established temperature, when connecting terminal temperature
When degree is greater than preset temperature, control controllable switch device QF1 is disconnected to be cut to the three-phase main line of transformer-supplied, is realized
Unit self-protection shield, and then the stability and reliability of self-regulation power supply are improved, and protect the safety of tester.
In addition, power grid, which is input at the three-phase line of self-regulation power supply, is also added power grid controllable switch device QF2, pass through control
The closing or opening of power grid controllable switch device QF2 processed, it is corresponding to realize connection or cutting power grid incoming line.In transformer temperature
While disconnecting controllable switch device QF1 in excessively high situation, power grid controllable switch device QF2 is also disconnected, is prevented under abnormal conditions
For transformer-supplied three-phase main line one end there are still high pressure, further improve the stability of self-regulation power supply and reliable
Property.
As a kind of preferred embodiment, controllable switch device QF1 is specially protective breaker.
Specifically, the controllable switch device QF1 of the application can select protective breaker, the closure of protective breaker or disconnected
Open the three-phase main line for being equivalent to connection or being cut to transformer-supplied.Certainly, the controllable switch device QF1 of the application can also be with
The controllable switch device comprising switches such as relay or reverse-blocking tetrode thyristors is selected, the application is not particularly limited herein.
As a kind of preferred embodiment, temperature collecting device 5 is specially digital temperature Acquisition Instrument.
Specifically, the temperature collecting device 5 of the application can select digital temperature Acquisition Instrument, digital temperature Acquisition Instrument
Temperature collection and temperature can be shown in real time, while the communication interface connecting with controller 4 being provided, to realize temperature biography
It is defeated.Certainly, the temperature collecting device 5 of the application can also select the device of other temperature collections, and the application is not done especially herein
Restriction.
The present invention also provides a kind of transformer device for testing temperature rise, including any of the above-described kind of self-regulation power supply.
The introduction of test device provided by the present application please refers to the embodiment of above-mentioned self-regulation power supply, and the application is herein no longer
It repeats.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
It should also be noted that, in the present specification, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of self-regulation power supply characterized by comprising
The reception device of the phase instruction of temperature rise test for receiving transformer；
The voltage regulating device that input terminal is connect with power grid, output end is connect with the feeder ear of the transformer；
For the input voltage of transformer described in real-time detection and the detection circuit of input current；
The control being connect respectively with the control terminal of the output end of the reception device, the detection circuit and the voltage regulating device
Device processed；The controller is used for the input voltage and input current current according to the transformer, controls the voltage and adjusts dress
It sets and adjusts its output voltage, so that it corresponds to the total losses power that the phase instruction applies on the transformer or electric current is permanent
Surely it is maintained at corresponding preset rules value.
2. self-regulation power supply as described in claim 1, which is characterized in that the voltage regulating device includes that voltage adjusts electricity
Machine, three-phase regulator and the connection voltage adjust the transmission device of motor and the three-phase regulator；Wherein:
The voltage adjusts control terminal of the input terminal of motor as the voltage regulating device, the input of the three-phase regulator
End and output end mutually should be used as the input terminal and output end of the voltage regulating device；
Then the controller is specifically used for the input voltage and input current current according to the transformer, controls the voltage tune
The rotational angle displacement for saving motor drives the drive by it, adjusts the output voltage of the three-phase regulator, with
Make its correspond to total losses power that the phase instruction applies on the transformer or electric current be constantly maintained at it is corresponding default
Specified value.
3. self-regulation power supply as claimed in claim 2, which is characterized in that the detection circuit includes:
The threephase potential transformer of input voltage for transformer described in real-time detection or three single-phase potential transformers；
The threephase current transformer of input current for transformer described in real-time detection or three single-phase current transformers；
For the voltage signal of real-time detection and current signal to be converted into the analog-digital converter of digital signal.
4. self-regulation power supply as claimed in claim 2, which is characterized in that the reception device is specially touch screen.
5. self-regulation power supply as claimed in claim 4, which is characterized in that input terminal of the controller also with the touch screen
Connection, in real time by the current input voltage of the transformer, input current, total losses power and input average current output
It is shown to the touch screen.
6. self-regulation power supply as claimed in claim 5, which is characterized in that the controller is specially programmable logic controller (PLC)
PLC controller.
7. self-regulation power supply as claimed in any one of claims 1 to 6, which is characterized in that the self-regulation power supply further includes controllably opening
Close the temperature collecting device of device and the connecting terminal temperature for acquiring the transformer；
The controller is also used to that it is disconnected to control the controllable switch device when the connecting terminal temperature is greater than preset temperature
It opens, so that the voltage regulating device stops being the transformer-supplied, realization device self-shield.
8. self-regulation power supply as claimed in claim 7, which is characterized in that the controllable switch device is specially to protect open circuit
Device.
9. self-regulation power supply as claimed in claim 8, which is characterized in that the temperature collecting device is specially digital temperature
Acquisition Instrument.
10. a kind of transformer device for testing temperature rise, which is characterized in that including such as described in any item self-regulations of claim 1-9
Power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810863891.1A CN108957193A (en) | 2018-08-01 | 2018-08-01 | A kind of self-regulation power supply and transformer device for testing temperature rise |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810863891.1A CN108957193A (en) | 2018-08-01 | 2018-08-01 | A kind of self-regulation power supply and transformer device for testing temperature rise |
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| CN109768622A (en) * | 2019-01-21 | 2019-05-17 | 河南城建学院 | A kind of distribution system and method can reduce electric energy loss |
| TWI688847B (en) * | 2019-07-16 | 2020-03-21 | 致茂電子股份有限公司 | Voltage maintaining circuit |
| CN111724658A (en) * | 2019-03-22 | 2020-09-29 | 江苏和网源电气有限公司 | Simple program-controlled variable alternating-current experimental power supply device |
| CN114545855A (en) * | 2022-02-15 | 2022-05-27 | 武汉市华兴特种变压器制造有限公司 | Method and device for realizing fine and rapid adjustment of transformer impedance |
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2018
- 2018-08-01 CN CN201810863891.1A patent/CN108957193A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109460099A (en) * | 2018-12-21 | 2019-03-12 | 煤科集团沈阳研究院有限公司 | Electrical equipment surface temperature rise current tracking examination and adjustment device and the method for inspection |
| CN109768622A (en) * | 2019-01-21 | 2019-05-17 | 河南城建学院 | A kind of distribution system and method can reduce electric energy loss |
| CN109768622B (en) * | 2019-01-21 | 2019-11-19 | 河南城建学院 | A kind of distribution system and method can reduce electric energy loss |
| CN111724658A (en) * | 2019-03-22 | 2020-09-29 | 江苏和网源电气有限公司 | Simple program-controlled variable alternating-current experimental power supply device |
| TWI688847B (en) * | 2019-07-16 | 2020-03-21 | 致茂電子股份有限公司 | Voltage maintaining circuit |
| CN114545855A (en) * | 2022-02-15 | 2022-05-27 | 武汉市华兴特种变压器制造有限公司 | Method and device for realizing fine and rapid adjustment of transformer impedance |
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