CN201163291Y - Multifunctional transformation ratio test device - Google Patents
Multifunctional transformation ratio test device Download PDFInfo
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- CN201163291Y CN201163291Y CNU2008200556489U CN200820055648U CN201163291Y CN 201163291 Y CN201163291 Y CN 201163291Y CN U2008200556489 U CNU2008200556489 U CN U2008200556489U CN 200820055648 U CN200820055648 U CN 200820055648U CN 201163291 Y CN201163291 Y CN 201163291Y
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Abstract
The utility model provides a multifunctional transformation ratio testing device comprising a power supply module, a testing sampling module and a control module. The control module are respectively connected with the power supply module and the testing sampling module, and a testing end of the testing sampling module is respectively connected with a primary end and a secondary end of an object to be tested. The transformation ratio testing device is controlled by a high-efficiency low-consumption singlechip to complete the testing processes of voltage boosting, measurement and voltage reduction automatically. Measuring results can be read directly and displayed by a large-screen backlight LCD. The transformation ratio testing device has a full Chinese operation interface, thereby bringing about simple and convenient use. A high voltage for test is generated by an epoxy casting step-up transformer. The transformation ratio testing device which has a small size for easy carrying can not only measure the transformation ratio of an electric voltage transformer (including an electromagnetic potential transformer PT and a capacitance voltage transformer CVT) but also integrate the function of measuring the transformation ratio of various three-phase transformers and single-phase transformers. In addition, the transformation ratio testing device is also provided with a miniature printer capable of printing and outputting the measuring results.
Description
Technical field
The utility model relates to a kind of proving installation, particularly a kind of multi-functional no-load voltage ratio proving installation that is used to measure the transformation ratio of electric power mutual-inductor.
Background technology
In State Grid's preventive trial rules, require semi-manufacture, finished product, new transformer that install, operation are carried out turn ratio or voltage ratio test.Traditional, the no-load voltage ratio that adopts the no-load voltage ratio electric bridge to come measuring transformer, its operating process is loaded down with trivial details, reading is not directly perceived, and measurement range is narrow, and test result only is the data of a phase no-load voltage ratio, and carry out necessary conversion, measurement function only limits to conventional no-load voltage ratio and measures, and does not relate to the measurement of voltage transformer (VT), the fast pace of incompatibility modern surveying, high efficiency requirement.
Therefore, need a kind of multi-functional no-load voltage ratio proving installation especially, remedy the existing existing defective of no-load voltage ratio that adopts the no-load voltage ratio electric bridge to come measuring transformer, possess no-load voltage ratio, the group of conventional single, three-phase transformer, the measurement function of polarity simultaneously.
The utility model content
The purpose of this utility model is to provide a kind of multi-functional no-load voltage ratio proving installation, has remedied the existing defective of no-load voltage ratio that existing employing no-load voltage ratio electric bridge comes measuring transformer, possesses no-load voltage ratio, the group of conventional single, three-phase transformer, the measurement function of polarity simultaneously.
The technical matters that the utility model solved can realize by the following technical solutions:
A kind of multi-functional no-load voltage ratio proving installation is characterized in that it comprises:
One program-controlled power module;
One gathers the magnitude of voltage of product to be tested primary and secondary test lead and the test sample module of carrying out the A/D conversion; And
The one primary and secondary test lead magnitude of voltage of handling the collection of described test sample module carries out the control module that analyzing and processing obtains the no-load voltage ratio value;
Described control module is connected with the test sample module with described power module respectively, and the test lead of described test sample module is connected to the primary and secondary end of product to be tested.
Described test sample module includes the A/D modular converter that the voltage signal of the primary and secondary end that is used for the product to be tested that will collect is changed.
Described power module is provided with the output control module of the testing power supply that is used to control power module output.
Work normally for the ease of controlling described control module, be connected with keyboard on the described control module.
Described control module also is connected with and is used to show work at present state and the display module that makes things convenient for the user to operate.
Described display module is the dot lcd display module.
Multi-functional no-load voltage ratio proving installation of the present utility model has following characteristics:
1, integral structure, in light weight, be easy to carry;
2, trial voltage height is directly exported 10kV voltage, need not add any increasing apparatus and can finish the no-load voltage ratio of the above various voltage transformer (VT) of 10kV and the measurement of polarity, possesses no-load voltage ratio, the group of conventional single, three-phase transformer, the measurement function of polarity simultaneously;
3, by Single-chip Controlling, the measuring accuracy height, test speed is fast, and data are accurate, good reproducibility;
4, can preserve the test results (respectively 80 groups of CVT no-load voltage ratio, three-phase no-load voltage ratio, single-phase no-load voltage ratios) of organizing, respectively separately preservation of record is convenient to manage, and can write down the date and time when testing more;
5, full menu in Chinese is simple to operate, has only key and acknowledgement key up and down, the liquid crystal display backlight of giant-screen dot matrix, and the operation information prompting, indoor and outdoor all can clear demonstration.
Multi-functional no-load voltage ratio proving installation of the present utility model adopts the efficient low-consume Single-chip Controlling, automatically finish and boost, measure, measuring processes such as step-down, the measurement result direct-reading, by the giant-screen backlight liquid crystal display, complete Chinese operation interface, easy to use, produce the test high pressure by the epoxy casting step-up transformer, volume is small and exquisite, be easy to carry, energy measurement voltage of power mutual inductor (comprising electromagnetic potential transformer PT and capacitance type potential transformer CVT) transformation ratio is also integrated measures various three-phase transformer no-load voltage ratios and single transformer no-load voltage ratio, carries mini-printer simultaneously, can the printout measurement result.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model;
Fig. 3 is another circuit theory diagrams of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1, a kind of multi-functional no-load voltage ratio proving installation, it comprises power module 1, test sample module 3 and control module 2; Control module 2 is connected with test sample module 3 with power module 1 respectively, and the test lead of test sample module 3 is connected to the primary and secondary end of product to be tested.
2 pairs of test sample modules of control module 3 are gathered and the primary and secondary test lead magnitude of voltage of input carries out analyzing and processing and obtains the no-load voltage ratio value, finish automatically boost, measuring processes such as measurement, step-down; Simultaneously, control module 2 is integrated, and conventional no-load voltage ratio is measured, and comprises no-load voltage ratio, the polarity of single transformer, the measurement of the no-load voltage ratio of three-phase transformer, group, tap position.
Be connected with display module 5 and keyboard 6 on the control module 2, keyboard 6 is convenient to control module 2 is operated control, and control module 2 can be worked normally; Display module 5 is used to show the work at present state of described multi-functional no-load voltage ratio proving installation and be user-friendly for operation that in the present embodiment, display module 5 is the dot lcd display module.
As shown in Figure 2, control module 2 is chip U5,32～39 pin of chip U5 connect 3 of latch U6 respectively, 4,7,8,13,14,17,18 pin, and by 11～19 pin of bus difference connected storage U7 and 12～19 pin of extended chip U9,21～28 pin of chip U5 connect 2 of latch U6 respectively by bus, 5,6,9,12,15,16,20 of 19 pin and storer U7,1,26,2,23,21,24,25,3,4,5,6,7,8,9,10,27,22 pin, 31 pin of chip U5 and 40 pin be connected to each other connect respectively capacitor C 23 and+the 5V power supply, the other end ground connection of capacitor C 23, the 20 pin ground connection of chip U5,18,19 pin two ends parallel transistor XTAL, 1 of transistor XTAL, 2 pin connect capacitor C 21 and C22 respectively, the capacitor C 21 and the C22 other end are connected to each other back ground connection, 1 of chip U5,2,3,4,5,6,8,7 pin connect 9～2 pin of connector R7 respectively, its 1 pin ground connection, 10 of chip U5,11 pin connect Rxd respectively, the Txd end; 1,10 pin of latch U6 are connected to each other ground connection then, and its 20 pin connects+the 5V power supply; The 14 pin ground connection of storer U7, its 28 pin connects+the 5V power supply; The 20 pin ground connection of extended chip U9,40 pin connect+the 5V power supply, and 8 pin connect 8 pin of arithmetical unit U8C.
A/D modular converter 31 is by A/D conversion chip U3, U4 forms, 16～27 pin of chip U3 are connected with 16～17 pin of chip U4 by bus, A/D conversion chip U3,4 pin of U4 are connected to each other and meet A0,5 pin are connected to each other and meet A1,1 of arithmetical unit U8A, 2 pin connect A15 respectively, A14,5 pin of its 3 pin difference concatenation operation device U17B and 9 pin of arithmetical unit U17C, 4 pin of U17B meet A12,6 pin of U17B connect 3 pin of A/D conversion chip U4,10 pin of arithmetical unit U17C meet A13,8 pin of arithmetical unit U17C meet 3 pin of A/D conversion chip U3,1 of arithmetical unit U17A, 11 of 2 pin and arithmetical unit U17D, 12 pin are connected to each other, then ground connection; 6 pin of arithmetical unit U8B connect 6 pin of A/D conversion chip U3, U4 respectively, and 13 pin of A/D conversion chip U3 meet AD-V2in, and 13 pin of U4 meet AD-Vin; 1 of A/D conversion chip U3,15 pin shunt capacitance C18, its 1 pin meets power supply+5V, 15 pin ground connection, its 7 pin connects capacitor C 15 and power supply+5V respectively, another termination AGND of capacitor C 15, its 11 pin connects capacitor C 16 and power supply+5V respectively, another termination AGND of capacitor C 16, its 2 pin ground connection, 9 pin meet AGND, 10 pin meet variable resistor R4, and 12 pin meet variable resistor R3, variable resistor R3, the other end of R4 is connected to each other the back and is connected 1 of A/D conversion chip U4 with its 8 pin, 15 pin shunt capacitance C18, its 1 pin meets power supply+5V, 15 pin ground connection, its 7 pin connects capacitor C 19 and power supply+5V respectively, another termination AGND of capacitor C 19, its 11 pin connects capacitor C 20 and power supply+5V respectively, another termination AGND of capacitor C 20, its 2 pin ground connection, 9 pin meet AGND, 10 pin meet variable resistor R6,12 pin meet variable resistor R5, variable resistor R5, the other end of R6 is connected to each other the back and is connected A/D conversion chip U3 with its 8 pin, 28 pin of U4 insert 13 of chip U5,14 pin.
Connector JPIN is connected with power module 1, and 4,5 pin are by rectifier RS2, capacitor C 1, voltage stabilizer U16 and capacitor C 2, C3 output+5V power supply; 2,3 pin by rectifier RS2, capacitor C 4, C5, C8, C9, voltage stabilizer U17-2, U18 and capacitor C 6, C7, C10, C11 output+15V ,-the 15V power supply, its 1 pin meets AGND after connecting capacitor C 4, C5, C8, C9, C6, C7, C10, C11, for entire circuit provides power supply.
As shown in Figure 3, pin 1 ground connection of connector JP9, pin 2 power supplys, pin 3 pin 0, the pin 5 and 6 that connect relay switch K10 connects the pin 4,1,3,6 that 160N and 160L port, pin 7 to 10 are connected relay switch K2 respectively; The pin 8 of relay switch K2 connects power supply and connects its pin 7 by diode D2, and its pin 7 connects the pin 5 of photodiode Uo13; Pin 4 ground connection of photodiode Uo13, pin 1 connects power supply, and pin 2 connects the Djd1 port by resistance R 21.The pin 4 of relay switch K1 connects power supply and connects its pin 3 by diode D1, and pin 3 connects the pin 5 of photodiode Uo14, and pin 2 connects 160～port, and pin 1 connects the 160L port by pushbutton switch W250.Pin 4 ground connection of photodiode Uo14, pin 1 connects power supply, and pin 2 is by 22 Djd2 ports of resistance R.
The pin 1 of relay switch K10 connects the AD2 port, pin 0 by and the resistance R 24 and capacitor C 28 ground connection that connect, pin 2 by and the resistance R 25 that connects and capacitor C 29 ground connection and connect 160～port by series resistor R26 and R27, pin 3 connects power supply and the pin 5 by its pin 4 of diode D4 and photodiode Uo15.Pin 4 ground connection of photodiode Uo15, pin 1 connects power supply, and pin 2 connects the SW1T7 port by resistance R 23.The pin 8 of relay switch Ktst connects power supply, and pin 7 connects the RGO port, and pin 6 and 3 connects the Ac15 port by resistance R _ a_2 ground connection and resistance R _ a_2 and resistance C39 by resistance R _ a_1 and serial connection.
The pin 7 of connector JP8 connects the pin 1 of relay switch KA11 and the pin 1 of relay switch KA12 respectively, pin 7 is succeeded the pin 1 of electric switch KB11 and the pin 1 of relay switch KB12 respectively, pin 5 is succeeded the pin 1 of electric switch KC11 and the pin 1 of relay switch KC12 respectively, pin 4 is succeeded the pin 1 of electric switch Ka1 and the pin 1 of relay switch Ka2 respectively, pin 3 is succeeded the pin 1 of electric switch Kb1 and the pin 1 of relay switch Kb2 respectively, and pin 2 is succeeded the pin 1 of electric switch Kc1 and the pin 1 of relay switch Kc2 respectively.The pin 2 of relay switch KA11 connects 160～port, and pin 3 connects power supply, and pin 4 connects the pin 5 of photodiode Uo1 and connects power supply by diode D5.The pin 3 of relay switch KA12 connects power supply, and pin 4 connects the pin 5 of photodiode Uo2 and connects power supply by diode D6.The pin 2 of relay switch KB11 connects 160～port, and pin 3 connects power supply, and pin 4 connects the pin 5 of photodiode Uo3 and connects power supply by diode D7.The pin 3 of relay switch KB12 connects power supply, and pin 4 connects the pin 5 of photodiode Uo4 and connects power supply by diode D8.The pin 2 of relay switch KC11 connects 160～port, and pin 3 connects power supply, and pin 4 connects the pin 5 of photodiode Uo5 and connects power supply by diode D9.The pin 3 of relay switch KC12 connects power supply, and pin 4 connects the pin 5 of photodiode Uo6 and connects power supply by diode D10.The pin 2 connecting resistance Rs100 of relay switch Ka2, pin 3 connects power supply, and pin 4 connects the pin 5 of photodiode Uo12 and connects power supply by diode D16.Pin 2 ground connection of relay switch Ka1, pin 3 connects power supply, and pin 4 connects the pin 5 of photodiode Uo11 and connects power supply by diode D15.Pin 2 ground connection of relay switch Kb2, pin 3 connects power supply, and pin 4 connects the pin 5 of photodiode Uo10 and connects power supply by diode D14.The pin 2 connecting resistance Rs100 of relay switch Kb1, pin 3 connects power supply, and pin 4 connects the pin 5 of photodiode Uo8 and connects power supply by diode D13.The pin 2 connecting resistance Rs100 of relay switch Kc2, pin 3 connects power supply, and pin 4 connects the pin 5 of photodiode Uo9 and connects power supply by diode D12.Pin 2 ground connection of relay switch Kc1, pin 3 connects power supply, and pin 4 connects the pin 5 of photodiode Uo7 and connects power supply by diode D11.Photodiode Uo1 connects power supply to the pin 1 of Uo12, and pin 2 connects SW1T1-SW1T6 port and SWT1-SWT6 port by resistance R 28-R39 respectively, pin 4 ground connection.
The pin 1 of relay switch K13 connects the AD3 port, and pin 4 is by resistance R 42 ground connection, and pin 5 connects the RG1 port and connects its pin 6 by capacitor C 42, and pin 6 connects power supply.The pin 1 of relay switch K14 connects the AD3 port, and pin 4 is by the resistance R 41 and the R42 ground connection of serial connection, and pin 5 connects the RG2 port and connects its pin 6 by capacitor C 41, and pin 6 connects power supply.The pin 1 of relay switch K15 connects the AD3 port, pin 4 is by resistance R 40, R41 and the R42 ground connection of serial connection, simultaneously by diode Discharge ground connection and connect resistance R s100, pin 5 connects the RG3 port and connects its pin 6 by capacitor C 40, and pin 6 connects power supply.
The pin 3 of transport and placing device U19 is by capacitor C 31 ground connection, by in opposite directions stabilivolt D17, D18 ground connection of serial connection direction, connect the AD4 port by resistance R 44 simultaneously, pin 2 also connects the pin 4 of relay switch K17 by resistance R 43 by the pin 3 of resistance R 49 ground connection, connection relay switch K17, pin 7 connects power supply and passes through capacitor C 32 ground connection, pin 6 is succeeded the pin 1 of electric switch K17 and is connected the InputV port, and pin 4 connects power supply and passes through capacitor C 33 ground connection.
The pin 5 of relay switch K17 connect power supply and by and the capacitor C 38 and the diode D19 that connect connect its pin 6, pin 6 connects the RG4 port.
The pin 1-7 of chip U12 meets port PA0-PA6 respectively, pin 8 ground connection, and pin 9 connects power supply, and pin 10-16 meets port SW1T7-SW1T1 respectively.
The pin 1-6 ground connection of chip JP26, pin 37-40 ground connection, pin 33-36 connects power supply, pin 21,23,25,27 connects power supply, and pin 29 connects the InputV port, and pin 31 connects the AD1 port, pin 7,9,11,13,15 meets port PC0-PC4 respectively, pin 17 and 19 meets port Djd1 and Djd2, and pin 8,10,12,14,16,18,20 meets port PA0-PA6 respectively, and pin 22,24,26,28,30,32 meets port PB0-PB5 respectively.
Multi-functional no-load voltage ratio proving installation of the present utility model possesses voltage, current protecting function, and high pressure, low pressure end reversal connection have defencive function and wrong prompting.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the instructions just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall in claimed the utility model scope, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (6)
1, a kind of multi-functional no-load voltage ratio proving installation is characterized in that it comprises:
One program-controlled power module;
One gathers the magnitude of voltage of product to be tested primary and secondary test lead and the test sample module of carrying out the A/D conversion; And
The one primary and secondary test lead magnitude of voltage of handling the collection of described test sample module carries out the control module that analyzing and processing obtains the no-load voltage ratio value;
Described control module is connected with the test sample module with described power module respectively, and the test lead of described test sample module is connected to the primary and secondary end of product to be tested.
2, multi-functional no-load voltage ratio proving installation as claimed in claim 1 is characterized in that: described test sample module includes the A/D modular converter that the voltage signal of the primary and secondary end that is used for the product to be tested that will collect is changed.
3, multi-functional no-load voltage ratio proving installation as claimed in claim 1 is characterized in that: described power module is provided with the output control module of the testing power supply that is used to control power module output.
4, multi-functional no-load voltage ratio proving installation as claimed in claim 1 is characterized in that: be connected with keyboard on the described control module.
5, multi-functional no-load voltage ratio proving installation as claimed in claim 1 is characterized in that: described control module also is connected with and is used to show work at present state and the display module that makes things convenient for the user to operate.
6, multi-functional no-load voltage ratio proving installation as claimed in claim 5, it is characterized in that: described display module is the dot lcd display module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200556489U CN201163291Y (en) | 2008-02-22 | 2008-02-22 | Multifunctional transformation ratio test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200556489U CN201163291Y (en) | 2008-02-22 | 2008-02-22 | Multifunctional transformation ratio test device |
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| Publication Number | Publication Date |
|---|---|
| CN201163291Y true CN201163291Y (en) | 2008-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200556489U Expired - Fee Related CN201163291Y (en) | 2008-02-22 | 2008-02-22 | Multifunctional transformation ratio test device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201163291Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539942A (en) * | 2011-12-12 | 2012-07-04 | 河南省电力公司洛阳供电公司 | Portable transformation ratio testing instrument of current transformer |
| CN102735951A (en) * | 2012-06-19 | 2012-10-17 | 扬州市双宝电力设备有限公司 | Full-automatic transformation ratio group tester |
| CN109116284A (en) * | 2018-07-06 | 2019-01-01 | 国家电网公司 | Current mutual inductor testing apparatus and method |
-
2008
- 2008-02-22 CN CNU2008200556489U patent/CN201163291Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539942A (en) * | 2011-12-12 | 2012-07-04 | 河南省电力公司洛阳供电公司 | Portable transformation ratio testing instrument of current transformer |
| CN102735951A (en) * | 2012-06-19 | 2012-10-17 | 扬州市双宝电力设备有限公司 | Full-automatic transformation ratio group tester |
| CN102735951B (en) * | 2012-06-19 | 2016-09-14 | 扬州海沃电气科技发展有限公司 | Full-automatic transformation ratio group tester |
| CN109116284A (en) * | 2018-07-06 | 2019-01-01 | 国家电网公司 | Current mutual inductor testing apparatus and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081210 Termination date: 20130222 |