CN209946305U - Device for high-voltage withstand voltage test between regulating windings - Google Patents
Device for high-voltage withstand voltage test between regulating windings Download PDFInfo
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- CN209946305U CN209946305U CN201920469638.8U CN201920469638U CN209946305U CN 209946305 U CN209946305 U CN 209946305U CN 201920469638 U CN201920469638 U CN 201920469638U CN 209946305 U CN209946305 U CN 209946305U
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Abstract
The utility model relates to a device for high-voltage regulation inter-winding withstand voltage test, which comprises an input unit, a control unit and a control unit, wherein the input unit is used for sending working signals to the control unit; the information input end of the control unit is electrically connected with the input unit, and the control unit is used for generating a driving signal according to the working signal sent by the input unit; and the information input end of the action unit is connected with the information output end of the control unit, the action unit comprises at least one group of high-voltage relays, and the action unit is used for driving the on-off of the high-voltage relay switch according to the driving signal sent by the control unit. Utilize the utility model discloses in the intersegmental withstand voltage test of high pressure regulating winding, the accessible is once worked a telephone switchboard and is accomplished a plurality of regulating winding's withstand voltage test automatically, shortens test time, improves test efficiency, reduces intensity of labour.
Description
Technical Field
The utility model relates to a withstand voltage test's between high-pressure regulating winding device belongs to high-voltage electrical test technical field.
Background
The capacitive voltage transformer is used in an electric power system, and mainly has the functions of measuring the primary voltage of the system and providing signals for secondary equipment. As a high voltage measuring device, a capacitor voltage transformer must meet a certain accuracy requirement (0.2 level or 0.5 level), and therefore, a plurality of regulating windings are usually designed on a high voltage winding of a medium voltage transformer of an electromagnetic unit, and the windings are regulated in different combination modes, so that the accuracy of the transformer finally meets the requirement.
In the current national standards of capacitor voltage transformers, voltage withstand tests between regulating windings and to ground are clearly required in product factory tests. At present, each regulating winding is tested in turn by adopting a manual wiring mode, and the specific method comprises the following steps: firstly, a group of regulating windings to be subjected to voltage resistance is connected with a high-voltage wire, the other regulating windings are connected together in a short-circuit mode and grounded, a power supply is switched on and gradually boosted to 3kV for 1min, the voltage is reduced to 0V after the voltage boosting, the power supply is disconnected, and then the voltage resistance test of the group of regulating windings is completed. And then replacing one group of regulating windings to connect the high-voltage wire, short-circuiting and grounding the other regulating windings, and repeating the voltage-resisting action. All the regulating windings are operated in sequence, and the intersegment voltage withstand test of the regulating windings of the electromagnetic units is completed.
Normally, the number of electromagnetic unit high-voltage regulating windings of one capacitor voltage transformer is designed into 6 groups, and the windings are soaked in insulating oil, so that a tester can complete the inter-section voltage-withstanding test of the regulating winding of one product, and must soak both hands in the insulating oil to complete the wire connection and replacement of terminals for 6 times in sequence and lift the test voltage for 6 times, thereby wasting time and labor and reducing the test efficiency.
SUMMERY OF THE UTILITY MODEL
For solving prior art's not enough, the utility model provides a withstand voltage test's between high pressure regulating winding device can be through 1 wiring, and all withstand voltage tests between the regulating winding section are accomplished in automatic switch-over, reduce testing personnel working strength, save test time, improve test efficiency.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a device for withstand voltage test among high-voltage regulating windings is characterized by comprising,
the input unit is used for sending a working signal to the control unit;
the information input end of the control unit is electrically connected with the input unit, and the control unit is used for generating a driving signal according to the working signal sent by the input unit;
and the information input end of the action unit is connected with the information output end of the control unit, the action unit comprises at least one group of high-voltage relays, and the action unit is used for driving the on-off of the high-voltage relay switch according to the driving signal sent by the control unit.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, the group of high-voltage relays comprises a high-voltage input end, a high-voltage output end and two control ends.
The beneficial effect of adopting the further scheme is that: the high-voltage input ends of the two high-voltage relays are respectively and correspondingly connected with a high-voltage power supply and the ground, and the high-voltage output ends of the two high-voltage relays are connected in parallel and connected with the regulating winding terminal.
Furthermore, the connecting wire of the high-voltage input end adopts a high-voltage insulated wire.
The beneficial effect of adopting the further scheme is that: the connecting wire of the high-voltage input end adopts a high-voltage insulated wire, so that the insulation requirement of a high-voltage test is met.
Furthermore, the connecting wire of the high-voltage output end is a high-voltage insulated wire.
The beneficial effect of adopting the further scheme is that: the connecting wire of the high-voltage output end adopts a high-voltage insulating wire, so that the insulating requirement of a high-voltage test is met.
Further, the control unit includes a programmable logic controller for generating the drive signal.
The beneficial effect of adopting the further scheme is that: the controller sends out a driving signal by programming the controller, and the action unit drives the switching action of the high-voltage relay according to the driving signal to complete the switching actions of the high-voltage relay switch such as closing and opening and complete the building of a voltage withstand test loop.
Further, the control unit is electrically connected with the action unit through a terminal strip.
The beneficial effect of adopting the further scheme is that: the terminal power strip is adopted to transmit and conduct electric signals, and is convenient and energy-saving.
Further, the power supply module is further included and used for providing power.
The beneficial effect of adopting the further scheme is that: the power supply module mainly provides a direct-current working power supply for the high-voltage relay and the programmable logic controller.
The utility model has the advantages that: the utility model provides a high pressure is adjusted winding withstand voltage test's device and is passed through the input unit sends working signal to the control unit, the control unit generates drive signal according to working signal, the action unit is according to drive signal drive the closure of high-pressure relay switch, disconnection to accomplish the withstand voltage test between each winding section, only need once wiring, can accomplish all withstand voltage test between the regulation winding section automatically, practice thrift test time, improve test efficiency, it is showing to mass production effect, effectively reduced tester's intensity of labour, avoid the potential safety hazard that brings because of too much repeatability experiment operation leads to tired out, improve test security, change the current situation that efficiency is low under the withstand voltage test of current section, effectively reduce the number of times of contact of manual operation and product insulating oil, avoid because of sweat stain that the human body produced or the pollution of other impurity to insulating oil, the quality of the product is improved.
Drawings
Fig. 1 is a schematic diagram of the device for the withstand voltage test between the high-voltage regulating windings of the present invention;
fig. 2 is a schematic circuit diagram of the control unit, the input unit and the power supply unit of the device for the withstand voltage test between the high-voltage regulating windings of the present invention;
fig. 3 is a schematic circuit diagram of an action part of the device for the high-voltage regulation inter-winding voltage withstand test of the present invention.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1, the utility model provides a device for withstand voltage test between high voltage regulating windings, which is characterized in that the device comprises,
the input unit is used for sending a working signal to the control unit;
the information input end of the control unit is electrically connected with the input unit, and the control unit is used for generating a driving signal according to the working signal sent by the input unit;
and the information input end of the action unit is connected with the information output end of the control unit, the action unit comprises at least one group of high-voltage relays, and the action unit is used for driving the on-off of the high-voltage relay switch according to the driving signal sent by the control unit.
Preferably, the working signal comprises a start signal and a stop signal, and the start and stop of the device for the high-voltage regulating inter-winding voltage withstand test are realized through the simple start signal and stop signal.
Specifically, the action unit comprises at least one group of high-voltage relays, the high-voltage relays are used for forming different voltage withstanding test circuits, the two groups of high-voltage relays are connected and combined to form a group of high-voltage regulating windings, and the voltage withstanding test circuits of the group of regulating windings for the rest of regulating windings and the ground are formed by closing and opening the starting ends of the high-voltage relays.
Preferably, the action unit comprises at least one group of high-voltage relays, and the number of the high-voltage relays is determined according to the number of the high-voltage regulating windings. The high-voltage relay structure includes 1 high-voltage input end, 1 high-voltage output end to and 2 control ends. The group of high-voltage regulating windings need to be connected with 2 high-voltage relays, the high-voltage output ends of the 2 high-voltage relays are connected in parallel and connected with a regulating winding terminal, and the high-voltage input ends of the 2 high-voltage relays are respectively and correspondingly connected with a high-voltage power supply and the ground; through the on-off of the high-voltage relay switch, a group of voltage withstand test circuits between the regulating windings and the ground can be formed, and the voltage withstand test circuits of different regulating windings can be formed in sequence through the combination of different high-voltage relay switches. The connecting wires of the high-voltage input end and the high-voltage output end adopt high-voltage insulating wires, and the insulating requirements of high-voltage tests are met.
Specifically, the group of high-voltage relays comprises a high-voltage input end, a high-voltage output end and two control ends, the high-voltage input ends of the two high-voltage relays are respectively and correspondingly connected to a high-voltage power supply and the ground, and the high-voltage output ends of the two high-voltage relays are connected in parallel and are connected with the regulating winding terminal.
Preferably, the connecting wire of the high-voltage input end is a high-voltage insulated wire, and the connecting wire of the high-voltage input end is a high-voltage insulated wire, so that the insulation requirement of a high-voltage test is met.
Preferably, the connecting wire of the high-voltage output end is a high-voltage insulated wire, and the connecting wire of the high-voltage output end is a high-voltage insulated wire, so that the insulation requirement of a high-voltage test is met.
As shown in fig. 3, the actuating unit includes 14 high-voltage relays, specifically, K11, K12, K21, K22, K31, K32, K41, K42, K51, K52, K61, K62, K7, and K8, and a group of adjusting windings connects 2 high-voltage relays. The high-voltage relay structure comprises 1 high-voltage input end, 1 high-voltage output end and 2 control ends, and a wire connected with the high-voltage ends is a high-voltage insulating wire. By applying a control signal to the control end, the main switch of the high-voltage relay is closed or disconnected, so that the high-voltage input end and the high-voltage output end are switched on or off.
The high-voltage input ends of the high-voltage relays K11, K21, K31, K41, K51 and K61 are connected together and are connected with a high-voltage test power supply through K7; the high-voltage input ends of the high-voltage relays K12, K22, K32, K42, K52 and K62 are connected together and are connected with the ground through K8. One connecting terminal of the high-voltage regulating winding L1 is connected with the high-voltage output ends of K11 and K12, one connecting terminal of the high-voltage regulating winding L2 is connected with the high-voltage output ends of K21 and K22, and the like.
The control ends of the high-voltage relays K11, K12, K21, K22, K31, K32, K41, K42, K51, K52, K61, K62, K7 and K8 are respectively connected to a terminal row X2, and a terminal row X2 is connected with a terminal row X1 of the control part.
When the switches K11, K7, K8, K22, K32, K42, K52 and K62 are closed and the switches K12, K21, K31, K41, K51 and K61 are opened, a voltage withstand test circuit between the adjusting winding L1 and the rest of windings and the ground is formed. By analogy, the control switch combination can form voltage withstand test circuits of different regulating windings. The control signal of the high-voltage relay is connected with the terminal row X1 of the control part through the terminal row X2, and the combination of different test lines is completed by receiving the control signal sent by the control part.
Each adjusting winding terminal is respectively connected with the high-voltage relay through a wire, and in order to ensure that the connecting wires can bear test voltage, the used connecting wires adopt insulated wires capable of bearing high voltage, so that the insulation requirements of high-voltage tests are met.
Preferably, the input unit comprises keys, and the input unit comprises keys including a start key and a stop key for controlling the start of the test and the end of the test.
Specifically, the control unit comprises a programmable logic controller, the programmable logic controller is used for generating a driving signal, and the action unit drives the switching action of the high-voltage relay according to the driving signal, so as to complete the switching actions of the high-voltage relay such as on and off and complete the establishment of a withstand voltage test loop; and simultaneously, automatically carrying out a voltage withstand test on one group of high-voltage regulating windings, automatically entering the voltage withstand test of the next group of regulating windings after the voltage withstand test of all the regulating windings is completed, and disconnecting the high-voltage test power supply.
Preferably, the control unit adopts an industrial Programmable Logic Controller (PLC) as a controller, a product of Mitsubishi corporation is adopted, the model is FX1S-30MR, a control line of the action unit is connected to the PLC, a signal is sent out through the PLC to drive a switch of a high-voltage relay of an action part, the building of a voltage-withstanding test loop is completed, meanwhile, a voltage-withstanding test is automatically carried out on one group of high-voltage regulating windings for 1min, after the voltage-withstanding test is completed, the voltage-withstanding test of the next group of regulating windings is automatically started until the voltage-withstanding test of all the regulating windings is completed, and a high-voltage power supply is disconnected after the test is completed.
Preferably, the control unit is electrically connected with the action unit through the terminal strip, and the terminal strip is adopted to transmit and conduct electric signals, so that the energy is saved conveniently.
The high-voltage relay and the programmable logic controller are connected with the power supply module through a power supply, and the high-voltage relay and the programmable logic controller are connected with the power supply module through a power supply.
As shown in fig. 2, the power supply unit is a switching power supply, and provides a direct current 24V power supply to respectively supply power to the industrial PLC and the high voltage relay.
The control unit mainly adopts a PLC controller of Mitsubishi FX1S-30 MR. The key signal is connected to the input ends X1 and X3 of the PLC controller. The power supply units are respectively connected to power terminals of the PLC, the positive electrodes of the power supply units are connected to COM 0-COM 4 ends of the output ports, 14 terminals of the output ends Y0-Y7 and Y10-Y15 are connected with No. 1-14 terminals of the terminal row X1, and the negative electrodes of the power supply units are connected to No. 16 terminals of the terminal row X1.
The voltage resistance of the regulation winding L1 will be described as an example. When a key S1 is pressed, after a control circuit receives a starting signal sent by a key S1, a driving signal is sent through output ports Y6, Y4, Y2, Y0, Y14, Y12 and Y10, switches K11, K22, K32, K42, K52, K62 and K8 are closed, switches K12, K21, K31, K41, K51 and K61 are kept in an open state, after the test is completed, the output port Y11 sends a signal to close the switch K7, high voltage is applied to an adjusting winding L1, the test starts to time, after 1min, the output port Y11 sends a signal to open the K7, and the voltage resistance test of the adjusting winding L1 is completed; after 2s of time delay, the controller continues to drive the L2 high-voltage regulating winding voltage-withstand test line switch to perform the L2 high-voltage regulating winding voltage-withstand test until all the regulating winding voltage-withstand tests are completed. If abnormal conditions occur in the test process, a tester can press the test stop button S2, the device automatically turns on the switch K7, the high-voltage power supply is cut off, and the test is ended.
The utility model has the advantages that: the utility model provides a high pressure is adjusted winding withstand voltage test's device and is passed through the input unit sends working signal to the control unit, the control unit generates drive signal according to working signal, the action unit is according to drive signal drive the closure of high-pressure relay switch, disconnection to accomplish the withstand voltage test between each winding section, only need once wiring, can accomplish all withstand voltage test between the regulation winding section automatically, practice thrift test time, improve test efficiency, it is showing to mass production effect, effectively reduced tester's intensity of labour, avoid the potential safety hazard that brings because of too much repeatability experiment operation leads to tired out, improve test security, change the current situation that efficiency is low under the withstand voltage test of current section, effectively reduce the number of times of contact of manual operation and product insulating oil, avoid because of sweat stain that the human body produced or the pollution of other impurity to insulating oil, the quality of the product is improved.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. A device for withstand voltage test among high-voltage regulating windings is characterized by comprising,
the input unit is used for sending a working signal to the control unit;
the information input end of the control unit is electrically connected with the input unit, and the control unit is used for generating a driving signal according to the working signal sent by the input unit;
and the information input end of the action unit is connected with the information output end of the control unit, the action unit comprises at least one group of high-voltage relays, and the action unit is used for driving the on-off of the high-voltage relay switch according to the driving signal sent by the control unit.
2. The apparatus of claim 1, wherein the set of high voltage relays comprises a high voltage input terminal, a high voltage output terminal and two control terminals.
3. The apparatus for testing high voltage regulated inter-winding voltage withstand according to claim 2, wherein the connecting wires of the high voltage input terminals are high voltage insulated wires.
4. The apparatus for testing voltage withstand between high voltage regulating windings according to claim 2 or 3, wherein the connecting wire of the high voltage output terminal is a high voltage insulated wire.
5. The apparatus of claim 1, wherein the control unit comprises a programmable logic controller for generating the driving signal.
6. The apparatus for testing withstand voltage between high voltage regulating windings according to claim 1, wherein said control unit is electrically connected to said action unit through a terminal strip.
7. The apparatus for the inter-high voltage regulation winding withstand voltage test according to claim 1, further comprising a power module for supplying power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920469638.8U CN209946305U (en) | 2019-04-09 | 2019-04-09 | Device for high-voltage withstand voltage test between regulating windings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920469638.8U CN209946305U (en) | 2019-04-09 | 2019-04-09 | Device for high-voltage withstand voltage test between regulating windings |
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| Publication Number | Publication Date |
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| CN209946305U true CN209946305U (en) | 2020-01-14 |
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| CN201920469638.8U Active CN209946305U (en) | 2019-04-09 | 2019-04-09 | Device for high-voltage withstand voltage test between regulating windings |
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