CN212675153U - Intelligent switching device for secondary wiring in current transformer test - Google Patents
Intelligent switching device for secondary wiring in current transformer test Download PDFInfo
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- CN212675153U CN212675153U CN202021526646.0U CN202021526646U CN212675153U CN 212675153 U CN212675153 U CN 212675153U CN 202021526646 U CN202021526646 U CN 202021526646U CN 212675153 U CN212675153 U CN 212675153U
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Abstract
The application discloses an intelligent switching device for secondary wiring of a current transformer test, which comprises a power supply part, wherein the power supply part is connected with a control part, the control part is connected with a circuit switching part, the circuit switching part comprises a first class primary wiring end and a second class primary wiring end, the first class primary wiring end is connected with four first class switches, each first class switch is connected with a secondary wiring end, each second class primary wiring end is connected with four second class switches and four third class switches, each second class switch and each third class switch are connected with a secondary wiring end, all the secondary wiring ends are used for being connected to the secondary end of the current transformer, the first class switches, the second class switches and the third class switches are turned on or off under the control of the control part, and the secondary wiring operation of multiple tests can be completed at one time in the test process of the current transformer by utilizing the device, the circuit does not need to be replaced, the working efficiency is improved, and the test cost is saved.
Description
Technical Field
The utility model relates to a power equipment technical field, more specifically say, relate to an experimental secondary wiring intelligent switching device of current transformer.
Background
With the development of society and economy, the power consumption demand of enterprises and residents is increasing, and the quantity of substations and power transformation equipment are also increasing. Due to the influence of factors such as the operation process, the manufacturing quality, the installation process, the system voltage, the illumination and the heating of the power transformation equipment, environmental chemical substances, the mechanical vibration of the power transformation equipment and the like, defects or hidden dangers exist, and the defects or the hidden dangers need to be checked through an electrical test. The electrical test is mainly aimed at primary equipment, and is used for carrying out the work of handover test, routine test, live-line detection, defect elimination and the like, so that the healthy and stable operation of the equipment is ensured. In recent years, the installation quantity of current transformers in various places is increased day by day, and it is very important to complete related electrical test work quickly and accurately and improve the work efficiency.
The test content of the current transformer comprises 5 insulation resistance tests, direct current resistance tests, volt-ampere characteristic tests, current transformation ratio tests, outgoing line terminal polarity tests and voltage withstand tests, all tests of the current transformer need to be carried out for secondary wiring and secondary wiring replacement of equipment, the process repeatedly occurs and accounts for about 20% of the whole test time, and through statistics, the single current transformer test needs the secondary wiring of the equipment for 5 times and the secondary wiring replacement for 10 times, so that the test is more complicated and inconvenient. The secondary wiring of each device and the secondary wiring replacement are repeatedly checked and consumed on the physical strength, the vigor and the eyesight of workers, and meanwhile, low-level errors such as interface dislocation, repeated tests and the like can be avoided in the careful operation. In the face of this reality, although the experimenter can overcome the problem by relying on energy and physical strength, it is also desirable to find a suitable solution to reduce or even eliminate the waste of labor force, and to release the labor force from the complicated labor.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides an experimental secondary wiring intelligence auto-change over device of current transformer can be in current transformer test process, once only accomplish the secondary wiring operation of multinomial experiment, and need not to change the circuit in the test process, has improved work efficiency, has saved the test cost.
The utility model provides an intelligent switching device for secondary wiring of a current transformer test, which comprises a power supply part, the power supply part is connected with a control part, the control part is connected with a line switching part, the line switching part comprises a first type primary terminal and a second type primary terminal which are used for connecting a test instrument, the first class primary terminal is connected with four first class switches, each first class switch is connected with a secondary terminal, each second class primary terminal is connected with four second class switches and four third class switches, and each of the second type switch and the third type switch is connected with a secondary terminal, all the secondary terminals are used for being connected to the secondary terminal of the current transformer, and the first type switch, the second type switch and the third type switch are turned on or off under the control of the control part.
Preferably, in the above intelligent switching apparatus for testing secondary wiring of a current transformer, the first switch, the second switch and the third switch are all electromagnetic relays.
Preferably, in the above intelligent switching apparatus for testing secondary wiring of a current transformer, the power supply unit includes a lithium battery and a charger.
Preferably, in the above intelligent switching apparatus for testing secondary wiring of a current transformer, the control unit is an MCU.
Preferably, in the above intelligent switching device for testing secondary wiring of the current transformer, the first type of primary wiring terminal and the second type of primary wiring terminal are wiring column type wiring terminals, and the secondary wiring terminal is a plug-in type wiring terminal.
Preferably, in the above intelligent switching apparatus for testing secondary wiring of a current transformer, the apparatus further comprises an aluminum alloy case surrounding the power supply member, the control member and the line switching member.
Preferably, in the intelligent switching device for testing secondary wiring of the current transformer, a color display touch screen connected with the control component is further included.
According to the above technical solution, the intelligent switching device for secondary wiring of the current transformer test provided by the present invention includes a power supply component, the power supply component is connected with a control component, the control component is connected with a circuit switching component, the circuit switching component includes a first type primary wiring end and a second type primary wiring end for connecting a test instrument, the first type primary wiring end is connected with four first type switches, each first type switch is connected with a secondary wiring end, each second type primary wiring end is connected with four second type switches and four third type switches, each second type switch and each third type switch are connected with a secondary wiring end, all the secondary wiring ends are used for being connected to the secondary end of the current transformer, and the first type switch, the second type switch and the third type switch are controlled by the control component to be turned on or turned off, therefore, all wiring can be completed firstly, the switch needing to be opened is opened in each test, and the switch needing to be closed is closed so as to meet the requirement of each test, so that the secondary wiring operation of multiple tests can be completed at one time in the test process of the current transformer, the circuit does not need to be replaced in the test process, the working efficiency is improved, and the test cost is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is the utility model provides a pair of experimental secondary wiring intelligence auto-change over device's of current transformer schematic diagram.
Detailed Description
The core of the utility model is to provide an experimental secondary wiring intelligent switching device of current transformer can be in the current transformer test process, once only accomplish the secondary wiring operation of multinomial experiment, and need not to change the circuit in the test process, has improved work efficiency, has saved the test cost.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a pair of experimental secondary intelligent auto-change over device that works a telephone switchboard of current transformer 'S embodiment is shown in fig. 1, fig. 1 is the utility model provides a schematic diagram of experimental secondary intelligent auto-change over device that works a telephone switchboard of current transformer' S embodiment, this experimental secondary intelligent auto-change over device that works a telephone switchboard of current transformer includes power supply part 1, power supply part 1 is connected with control component 2, control component 2 interconnecting link switching part 3, line switching part 3 is including the first type primary connection end S1 and the second type primary connection end S2 that are used for connecting test instrument, first type primary connection end S1 is connected with four first type switches 1K1, 2K1, 3K1 and 4K1, every first type switch 1K1, 2K1, 3K1 and 4K1 all are connected with a secondary connection end, be 1S1 in fig. 1 respectively, 2S1, 3S1 and 4S1, every second type primary connection end S2 is connected with four second type switches 1K2, 2K2, 3K2 and 4K2 and four switches of a third type 1K3, 2K3, 3K3 and 4K3, and each of the switches of the second type and the switches of the third type is connected with a secondary terminal, namely 1S2 is connected to 1K2, 2S2 is connected to 2K2, 3S2 is connected to 3K2, 4S2 is connected to 4K2, 1S3 is connected to 1K3, 2S3 is connected to 2K3, 3S3 is connected to 3K3, 4S3 is connected to 4K3 in fig. 1, all secondary terminals are used for connecting to the secondary terminals of the current transformer, and the first switches 1K1, 2K1, 3K1 and 4K1, the second switches 1K2, 2K2, 3K2 and 4K2 and the third switches 1K3, 2K3, 3K3 and 4K3 are turned on or off under the control of the control component, that is, the first switches, the second switches and the third switches are connected to the control component 2 in fig. 1 to control the on or off of the switches, so that the trouble caused by multiple rewiring is avoided.
It should be noted that, the electrical test is to measure relevant parameters reflecting the health condition of the equipment for the power transformation equipment of the power system, check the running state of the equipment, and find out the defects of the equipment in time, so as to prevent accidents, which is an important link of the operation and maintenance of the power equipment and is one of effective means for ensuring the safe operation of the power equipment. The current transformer is an instrument for converting large current on a primary side into small current on a secondary side to measure according to the electromagnetic induction principle, consists of a closed iron core and a winding, and has 1 group of primary terminals and 4 groups of secondary terminals. The test items of the current transformer comprise an insulation resistance test, a direct current resistance test, a volt-ampere characteristic test, a current transformation ratio test, a leading-out terminal polarity test and a voltage withstand test. The current transformer each item is experimental all need to carry out equipment secondary wiring and secondary wiring change, and this process takes place repeatedly, and the 20% of whole test time is accounted for to the approximation, and through statistics, the single current transformer is experimental to need equipment secondary wiring 5 times, change secondary wiring 10 times, and on-the-spot actual work in current transformer has installed and has accomplished, the secondary terminal has been connected to in the high tension control cabinet secondary wiring case, and each way wiring mouth quantity is extremely many in the box, and the interface has been integrated as the plug-in interface of aperture 50 mm. After the intelligent switching device for the secondary wiring of the current transformer test provided by the scheme is utilized, when the test is started, all the wirings are connected, before each test is carried out, corresponding one-key switching of the secondary wiring is carried out, when test items need to be replaced, instruments connected to the first type of primary wiring end S1 and the second type of primary wiring end S2 are directly replaced, it can be seen that the wiring is not required to be disconnected and replaced in the whole test process, the intelligent switching device is more concise and clear, and therefore the working efficiency is greatly improved.
It can be seen from the above technical solutions that, in the embodiment of the above intelligent switching apparatus for testing secondary wiring of a current transformer provided by the present invention, the intelligent switching apparatus comprises a power supply component, the power supply component is connected with a control component, the control component is connected with a circuit switching component, the circuit switching component comprises a first type primary wiring end and a second type primary wiring end for connecting a testing instrument, the first type primary wiring end is connected with four first type switches, each first type switch is connected with a secondary wiring end, each second type primary wiring end is connected with four second type switches and four third type switches, each second type switch and each third type switch are connected with a secondary wiring end, all secondary wiring ends are used for being connected to the secondary end of the current transformer, and the first type switch, the second type switch and the third type switch are turned on or off under the control of the control component, therefore, all wiring can be completed firstly, the switch needing to be opened is opened in each test, and the switch needing to be closed is closed so as to meet the requirement of each test, so that the secondary wiring operation of multiple tests can be completed at one time in the test process of the current transformer, the circuit does not need to be replaced in the test process, the working efficiency is improved, and the test cost is saved.
In a specific embodiment of the above-mentioned secondary wiring intelligent switching device for testing the current transformer, the first type switch, the second type switch and the third type switch are all electromagnetic relays, and the electromagnetic relays have the advantages of being capable of being switched on and off instantly, and capable of freely switching secondary circuits, and more specifically, a Tongling JQC-T7815A electromagnetic relay can be adopted, and has the advantages of being large in electric shock load, large in conversion power, short in on-off time, low in price and the like.
In another specific embodiment of the above intelligent switching device for testing secondary wiring of a current transformer, the power supply component may include a lithium battery and a charger, further, the lithium battery may be 12V, and a charger matched with the lithium battery is further provided, so that the device can be applied in an environment without a power supply on site, and is more convenient, and other types of power supply components can be selected according to actual needs without limitation here. The scheme can adopt an AC/DC power supply mode, and can also adopt AC power supply (AD220V +/-10%, 50Hz) in addition to the DC mode.
In another specific embodiment of the above intelligent switching device for testing secondary wiring of a current transformer, the control component may be an MCU, that is, the control component may select an MCU microcontroller to drive a circuit, and has a bit processing capability, emphasizes control and transaction processing functions, and has low voltage, low power consumption, good expandability, and low cost.
In an embodiment of the above intelligent switching device for testing secondary wiring of the current transformer, the first type primary wiring terminal and the second type primary wiring terminal may be post-type wiring terminals, and since a plurality of testing instruments need to be replaced in the current transformer test, it is necessary to match the wiring modes of a plurality of wirings, and it is necessary to select the post-type wiring terminal, the connection time of the wiring terminals is 7s, the maximum stress is 500N, and it is possible to match a plurality of types of connectors, and the secondary wiring terminals may be plug-in type wiring terminals, because the number of secondary terminals of the device is large, it is necessary to connect a fast and reliable wiring mode, the connection time of the plug-in type wiring terminals is 0.5s, the maximum stress is 40N, and the matable connectors are plug-in type connectors.
In another preferred embodiment of the above intelligent switching device for testing secondary wiring of the current transformer, the intelligent switching device further comprises an aluminum alloy box body surrounding the power supply part, the control part and the circuit switching part, and has the advantages of light weight, higher weight than a resin aviation box, high mechanical strength, better sealing property, long service life and difficult rusting.
In another preferred embodiment of the above intelligent switching device for testing secondary wiring of the current transformer, the intelligent switching device further comprises a color display touch screen connected with the control component, the color display touch screen is active light emitting, integrated in display and control, clear and distinguishable in color output, and simple and convenient in touch control, under the condition, the circuit can be switched by touching the color display screen, so that the switching process is more intuitive and is not easy to make mistakes, of course, the intelligent switching device is a preferred scheme, and the switching can be realized by adopting other modes without limitation.
To sum up, utilize the utility model provides an above-mentioned experimental secondary of current transformer wiring intelligence auto-change device, can make the experimental equipment secondary of multinomial experiment wiring 1 times accomplish and test process in 0 changes, experimental operation process flow has directly been simplified, the test time has been reduced, the work efficiency is improved, the experimental mistake that repeated plug leads to has been avoided simultaneously, one machine defense has been added on the basis of people's air defense, the security obtains promoting, the reliability is ensured, it is incessant indirectly to have guaranteed people's life and enterprise's production power consumption, make people's life not influenced, the stable orderly production of enterprise, more importantly liberates the staff from unnecessary numerous and diverse work, there is more time energy to put into in the middle of the work that has more worth, the labor utilization rate has directly been improved. From the direct benefit, taking 2 single 50000kVA 110kV substations as an example, 10 workers are saved by using labor, the cost is comprehensive, the cost is 1000 yuan per worker accounting, and the cost of a single substation is saved by 10000 yuan.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. An intelligent switching device for secondary wiring in a current transformer test is characterized by comprising a power supply part, the power supply part is connected with a control part, the control part is connected with a line switching part, the line switching part comprises a first type primary terminal and a second type primary terminal which are used for connecting a test instrument, the first class primary terminal is connected with four first class switches, each first class switch is connected with a secondary terminal, each second class primary terminal is connected with four second class switches and four third class switches, and each of the second type switch and the third type switch is connected with a secondary terminal, all the secondary terminals are used for being connected to the secondary terminal of the current transformer, and the first type switch, the second type switch and the third type switch are turned on or off under the control of the control part.
2. The current transformer test secondary wiring intelligent switching device according to claim 1, wherein the first type switch, the second type switch and the third type switch are all electromagnetic relays.
3. The intelligent switching device for testing secondary wiring of the current transformer as claimed in claim 1, wherein the power supply part comprises a lithium battery and a charger.
4. The intelligent switching device for testing secondary wiring of the current transformer according to claim 1, wherein the control part is an MCU.
5. The intelligent switching device for testing secondary wiring of the current transformer according to claim 1, wherein the first type of primary wiring terminal and the second type of primary wiring terminal are wiring column type wiring terminals, and the secondary wiring terminal is a plug-in type wiring terminal.
6. The intelligent switching device for secondary wiring of current transformer tests as claimed in any one of claims 1 to 5, further comprising an aluminum alloy case surrounding said power supply member, said control member and said line switching member.
7. The intelligent switching device for testing secondary wiring of the current transformer as claimed in claim 6, further comprising a color display touch screen connected with the control component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021526646.0U CN212675153U (en) | 2020-07-28 | 2020-07-28 | Intelligent switching device for secondary wiring in current transformer test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021526646.0U CN212675153U (en) | 2020-07-28 | 2020-07-28 | Intelligent switching device for secondary wiring in current transformer test |
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| Publication Number | Publication Date |
|---|---|
| CN212675153U true CN212675153U (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021526646.0U Active CN212675153U (en) | 2020-07-28 | 2020-07-28 | Intelligent switching device for secondary wiring in current transformer test |
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| CN (1) | CN212675153U (en) |
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- 2020-07-28 CN CN202021526646.0U patent/CN212675153U/en active Active
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