CN217766670U - Integrated calibration device for direct current system of transformer substation - Google Patents
Integrated calibration device for direct current system of transformer substation Download PDFInfo
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- CN217766670U CN217766670U CN202221596734.7U CN202221596734U CN217766670U CN 217766670 U CN217766670 U CN 217766670U CN 202221596734 U CN202221596734 U CN 202221596734U CN 217766670 U CN217766670 U CN 217766670U
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Abstract
The utility model provides a transformer substation direct current system integrated calibration device, belonging to the technical field of transformer substation direct current system integrated calibration devices; the technical problem to be solved is as follows: the improvement of the hardware structure of the integrated calibration device of the direct current system of the transformer substation is provided; the technical scheme for solving the technical problems is as follows: the device comprises four independent test units, namely a direct current grounding test unit, a storage battery replacing unit, a level difference matching test unit and an alternating current channeling direct test unit, wherein the direct current grounding test unit comprises a power resistor, the storage battery replacing unit comprises a diode, the level difference matching test unit comprises an adjustable resistor and a level difference matching test trigger button, the level difference matching test trigger button is connected with the adjustable resistor in series, one end of a transformer of the alternating current channeling direct test unit is connected with an alternating current power supply, and a binding post at the other end of the transformer is connected with the alternating current channeling direct test button in series; the utility model discloses be applied to the check-up of transformer substation's direct current system.
Description
Technical Field
The utility model provides a direct current system of transformer substation integration calibration equipment belongs to direct current system of transformer substation integration calibration equipment technical field.
Background
The direct current system of the transformer substation needs to be checked regularly, different tools need to be prepared for different checking projects in the traditional checking method, the testing steps are complex, multiple persons are needed to cooperate in the checking process, time and labor are consumed after the checking of the whole direct current system is completed, the efficiency is low, meanwhile, errors are easily caused by manual cooperation, the reliability of a checking result is low, and the safe, stable and accurate operation of the direct current system cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome not enough that exist among the prior art, the technical problem that solve is: the improvement of the hardware structure of the integrated checking device of the direct current system of the transformer substation is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: a transformer substation direct current system integrated calibration device comprises a shell, wherein a main switch, a direct current grounding test unit binding post, a storage battery replacement unit binding post, a level difference matching test knob, a level difference matching test trigger button, an alternating current to direct test unit binding post, an alternating current to direct test button and an alternating current to direct test alternating current power supply interface are arranged on the front face of the shell;
the casing is inside to be provided with four independent test units, is direct current ground test unit, battery replacement unit, the poor cooperation test unit of level respectively, hands over and scurries direct test unit, direct current ground test unit includes power resistor, and power resistor's both ends are connecting wire respectively as two direct current ground test unit terminals, battery replacement unit includes the diode, and the both ends of diode are connecting wire respectively as two battery replacement unit terminals, poor cooperation test unit includes adjustable resistance and the experimental trigger button of level difference cooperation, and the experimental trigger button of level difference cooperation is established ties with adjustable resistance, handing over scurries direct test unit and includes the transformer, and the power of interchange input is connected to the one end of transformer, concatenates on the terminal of the transformer other end and hands over and scurries direct test button.
One binding post of the direct current grounding test unit is grounded, the other binding post of the direct current grounding test unit is connected to a standby air switch of the direct current feeder screen through a test line, and the air switch of the direct current feeder screen is connected with the insulation detector.
The level difference is matched with a wiring terminal of the test unit and is connected with an air switch in the last level of the direct current system through a test line.
One binding post of the alternating current-to-direct current test unit is grounded, the other binding post of the alternating current-to-direct current test unit is connected to a standby air switch of the direct current feeder screen through a test line, and the air switch of the direct current feeder screen is connected with the insulation detector.
The positive terminal of the storage battery replacing unit is connected to the negative electrode of the storage battery adjacent to the negative electrode of the battery to be replaced or the fault battery through the test line, and the negative terminal of the storage battery replacing unit is connected to the positive electrode of the storage battery adjacent to the positive electrode of the battery to be replaced or the fault battery through the test line.
The utility model discloses beneficial effect for prior art possesses does:
(1) Integration: 4 secondary loop test items including a direct current system medium-level difference matching test, a direct current system grounding test, an alternating current fleeing test and single storage battery replacement work are integrated, so that the test time is obviously shortened, the number of operating personnel is reduced, and the working efficiency is improved;
(2) Carrying: the complicated situation that different test tools need to be carried in the past to different tests of a direct current system is mainly changed, the work flow is greatly simplified by the development of the device, and meanwhile, the whole device is light and handy in size and convenient to carry, and the working strength of testers is reduced to a certain extent.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the internal test circuit structure of the device of the present invention;
FIG. 3 is a schematic view of the front structure of the housing of the device of the present invention;
FIG. 4 is a schematic block diagram of the level difference coordination test unit of the present invention;
FIG. 5 is a schematic block diagram of the DC grounding test unit of the present invention;
fig. 6 is a schematic block diagram of an alternating current channeling straight test unit of the present invention;
FIG. 7 is a schematic block diagram of a battery replacing unit according to the present invention;
in the figure: the device comprises a direct current grounding test unit 1, a storage battery replacing unit 2, a level difference matching test unit 3, an alternating current-alternating current test unit 4, a master switch 5, a direct current grounding test unit binding post 6, a storage battery replacing unit binding post 7, a level difference matching test unit binding post 8, a level difference matching test knob 9, a level difference matching test trigger button 10, an alternating current-alternating current test unit binding post 11, an alternating current-alternating current test button 12, an alternating current-alternating current power interface 13, an adjustable resistor 14, a power resistor 15, an insulation detector 16 and a fault storage battery 17.
Detailed Description
As shown in fig. 1-7, the utility model relates to a substation direct current system integrated calibration device, including the casing, the casing openly is provided with master switch 5, direct current ground connection test unit terminal 6, battery replacement unit terminal 7, level difference cooperation test unit terminal 8, level difference cooperation test knob 9, level difference cooperation test trigger button 10, friendship to be found straight test unit terminal 11, friendship to be found straight test button 12, friendship to be found straight test alternating current power supply interface 13;
the utility model discloses a direct current test unit, including casing, level difference cooperation test unit 3, direct current test unit 4, level difference cooperation test unit 4, direct current test unit 1, battery are changed to the casing is inside to be provided with four independent test units, is direct current ground test unit 1, battery respectively, and direct current ground test unit 2, level difference cooperation test unit 3, and direct current ground test unit 4 is scurried in the handing over, direct current ground test unit 1 includes power resistor 15, and power resistor 15's both ends are connecting wire respectively as two direct current ground test unit terminals 6, battery change unit 2 includes the diode, and the both ends of diode are connecting wire respectively and are changed unit terminal 7 as two batteries, level difference cooperation test unit 3 includes adjustable resistor 14 and level difference cooperation test trigger button 10, and level difference cooperation test trigger button 10 establishes ties with adjustable resistor 14, it includes the transformer to scurrie direct current test unit 4, and the power of alternating current input is connected to one end of transformer, concatenates on the terminal of the transformer other end and scurries direct current test button 12.
One binding post of the direct current grounding test unit 1 is grounded, the other binding post of the direct current grounding test unit 1 is connected to a standby air switch of the direct current feeder screen through a test line, and the air switch of the direct current feeder screen is connected with the insulation detector.
And the level difference is matched with a binding post of the test unit 3 and is connected with an air switch in the last level of the direct current system through a test wire.
One binding post of the alternating current-direct current test unit 4 is grounded, the other binding post of the alternating current-direct current test unit 4 is connected to a standby air switch of the direct current feeder screen through a test line, and the air switch of the direct current feeder screen is connected with the insulation detector.
The positive terminal of the storage battery replacing unit 2 is connected to the negative electrode of the storage battery adjacent to the negative electrode of the battery to be replaced or the fault battery through a test line, and the negative terminal of the storage battery replacing unit 2 is connected to the positive electrode of the storage battery adjacent to the positive electrode of the battery to be replaced or the fault battery through a test line.
The utility model discloses each test unit carries out experimental process as follows:
step matching test: the direct current system level difference coordination test is also called an air switch level difference coordination test, and refers to protective coordination between the upper level and the lower level of a direct current breaker, whether the coordination of switches of all levels has rejection or override tripping under different currents is checked, the power failure range is prevented from being expanded, and a direct current system accident is important for preventing the power failure of a whole plant or the power failure of a whole station. Adopt the utility model discloses a schematic diagram that the device carries out the difference in level cooperation experiment is shown in figure 4, with the terminal of test wire with difference in level cooperation test unit 3 with the empty connection of opening of last level, like the level four air switch in figure 4, rotatory difference in level cooperation test knob 9 to corresponding position presses the experimental trigger button 10 of difference in level cooperation, will output pulse current, reaches level four air switch action current value, observes each level switch action condition, judges whether the action is correct.
And D, direct current grounding test: connecting one direct-current grounding test unit binding post 6 of the direct-current grounding test unit 1 to a standby air switch of the direct-current feeder screen through a test line, as shown in a direct-current grounding test schematic diagram of fig. 5, grounding the other direct-current grounding test unit binding post 6 of the direct-current grounding test unit 1, closing the air switch, and detecting whether the detection of the grounded insulation detector 16 and the line selection are correct.
Alternating current straight test: connecting one alternating current-to-direct current test unit terminal 11 of the alternating current-to-direct current test unit 4 to a standby air switch of the direct current feeder screen through a test line, as shown in a direct current grounding test schematic diagram of fig. 6, grounding the other alternating current-to-direct current test unit terminal 11 of the alternating current-to-direct current test unit 4, closing the air switch, starting an alternating current-to-direct current test button 12, and detecting whether the detection and line selection of a grounded insulation detector 16 are correct or not.
Replacement of single storage batteries: when the single storage battery is replaced, the storage battery replacing unit terminal 7 marked with "+" of the storage battery replacing unit 2 is connected to the negative electrode of the storage battery adjacent to the negative electrode of the storage battery, the storage battery replacing unit terminal 7 marked with "-" is connected to the positive electrode of the storage battery adjacent to the positive electrode of the storage battery, and after the connection is determined to be reliable, the failed storage battery starts to be replaced or removed as shown in fig. 7.
The utility model discloses the requirement that needs satisfy on handing over the lectotype of scurrying straight test unit's small-size isolation transformer is: the device can not only output alternating current of more than 10V, but also resist the impact of direct current 220V voltage.
The utility model discloses it can to carry out the instrument that the insulating detector 16 that adopts in the experiment adopted the current experimental requirement that accords with.
About the utility model discloses what the concrete structure need explain, the utility model discloses a each part module connection relation each other is definite, realizable, except that the special explanation in the embodiment, its specific connection relation can bring corresponding technological effect to based on do not rely on under the prerequisite of corresponding software program execution, solve the utility model provides a technical problem, the utility model provides a model, the connection mode of parts, module, specific components and parts that appear all belong to the prior art such as the published patent that technical staff can acquire before the application day, published journal paper, or common general knowledge, need not to describe in detail for the technical scheme that the present case provided is clear, complete, realizable, and can be according to this technical means or obtain corresponding entity product.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.
Claims (5)
1. The utility model provides a direct current system of transformer substation integration verifying attachment, includes the casing, its characterized in that: the front side of the shell is provided with a main switch, a direct current grounding test unit binding post, a storage battery replacement unit binding post, a level difference matching test knob, a level difference matching test trigger button, an alternating current to direct test unit binding post, an alternating current to direct test button and an alternating current to direct test alternating current power supply interface;
the utility model discloses a direct current test device, including casing, level difference cooperation test unit, direct current ground test unit, battery, level difference cooperation test unit, direct current ground test unit includes power resistor, and power resistor's both ends connecting wire is as two direct current ground test unit terminals respectively, the battery is changed the unit and is included the diode, and the both ends connecting wire of diode are as two battery change unit terminals respectively, level difference cooperation test unit includes adjustable resistance and the experimental trigger button of level difference cooperation, and the experimental trigger button of level difference cooperation is established ties with adjustable resistance, it includes the transformer to cross direct test unit to hand over, and the power of alternating current input is connected to the one end of transformer, concatenates on the terminal of the transformer other end and hands over and scurries direct test button.
2. The integrated checking device for the direct current system of the transformer substation of claim 1, characterized in that: one binding post of the direct current grounding test unit is grounded, the other binding post of the direct current grounding test unit is connected to a standby air switch of the direct current feeder screen through a test line, and the air switch of the direct current feeder screen is connected with the insulation detector.
3. The integrated checking device for the direct current system of the transformer substation of claim 1, characterized in that: the level difference is matched with a wiring terminal of the test unit and is connected with an air switch in the last level of the direct current system through a test line.
4. The integrated substation direct-current system checking device according to claim 1, characterized in that: one binding post of the alternating current-to-direct current test unit is grounded, the other binding post of the alternating current-to-direct current test unit is connected to a standby air switch of the direct current feeder screen through a test line, and the air switch of the direct current feeder screen is connected with the insulation detector.
5. The integrated checking device for the direct current system of the transformer substation of claim 1, characterized in that: the positive terminal of the storage battery replacing unit is connected to the negative electrode of the storage battery adjacent to the negative electrode of the battery to be replaced or the fault battery through the test line, and the negative terminal of the storage battery replacing unit is connected to the positive electrode of the storage battery adjacent to the positive electrode of the battery to be replaced or the fault battery through the test line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221596734.7U CN217766670U (en) | 2022-06-24 | 2022-06-24 | Integrated calibration device for direct current system of transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221596734.7U CN217766670U (en) | 2022-06-24 | 2022-06-24 | Integrated calibration device for direct current system of transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217766670U true CN217766670U (en) | 2022-11-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221596734.7U Active CN217766670U (en) | 2022-06-24 | 2022-06-24 | Integrated calibration device for direct current system of transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217766670U (en) |
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2022
- 2022-06-24 CN CN202221596734.7U patent/CN217766670U/en active Active
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