CN212514978U - Insulation monitoring device calibrator capable of simulating direct current mutual channeling - Google Patents
Insulation monitoring device calibrator capable of simulating direct current mutual channeling Download PDFInfo
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- CN212514978U CN212514978U CN202020510130.0U CN202020510130U CN212514978U CN 212514978 U CN212514978 U CN 212514978U CN 202020510130 U CN202020510130 U CN 202020510130U CN 212514978 U CN212514978 U CN 212514978U
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- 238000009413 insulation Methods 0.000 title claims abstract description 16
- 238000012806 monitoring device Methods 0.000 title claims abstract description 16
- 230000005465 channeling Effects 0.000 title claims description 16
- 238000004088 simulation Methods 0.000 claims abstract description 32
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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Abstract
The utility model relates to a direct current is scurry each other and is simulated technical field, concretely relates to can simulate direct current and scurry each other's insulation monitoring device check gauge, include I section direct current constant voltage power supply and II section direct current constant voltage power supply through balance bridge ground connection respectively, I section direct current constant voltage power supply's positive and negative generating line and II section direct current constant voltage power supply's positive and negative generating line respectively are connected with the direct current through a relay switch and scurry analog module each other, the relay switch all is connected with CPU, provides one kind can realize the direct current and scurry each other's simulation of simulation each other and can simulate the direct current and scurry the insulation monitoring device check gauge each other.
Description
Technical Field
The utility model relates to a direct current is scurry simulation technical field each other, concretely relates to insulation monitoring device check gauge that can simulate direct current and scurry each other.
Background
At present, functional parameters among direct current system insulation monitoring device developers are uneven, measures adopted in the implementation process are different, even products do not meet the industry design specifications, and potential hazards are caused to the safe operation of a direct current system. Aiming at the problems, in order to prevent unqualified device products from flowing into a power grid to operate, a set of direct current system insulation monitoring device inspection system is researched and developed to inspect functions and parameters of an insulation monitoring device entering a network, wherein direct current channeling simulation is an indispensable functional item of an insulation monitoring device calibrator.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, and the insulation monitoring device calibrator capable of simulating direct current mutual channeling capable of realizing direct current mutual channeling simulation is provided.
The utility model discloses a solve the technical scheme that its technical problem adopted and do: the insulation monitoring device calibrator capable of simulating direct current mutual channeling comprises an I-section direct current stabilized power supply and an II-section direct current stabilized power supply which are grounded through a balance bridge respectively, wherein a positive bus of the I-section direct current stabilized power supply and a positive bus of the II-section direct current stabilized power supply are connected with a direct current mutual channeling simulation module through relay switches respectively, and the relay switches are connected with a CPU.
The relay switch comprises a relay S1 corresponding to a positive bus of a section I direct-current stabilized power supply, a relay S2 corresponding to a negative bus of the section I direct-current stabilized power supply, a relay S3 corresponding to a positive bus of a section II direct-current stabilized power supply and a relay S4 corresponding to a negative bus of the section II direct-current stabilized power supply, the CPU is in control connection with the relays S1, S2, S3 and S4, at least two groups of contact switches are arranged on the relays S1, S2, S3 and S4, a first group of normally open contacts of the relay S1 are connected with the direct-current cross simulation module, a second group of normally closed contacts of the relay S1 are connected with the relay S3, a first group of normally open contacts of the relay S2 is connected with the direct-current cross simulation module, a second group of normally open contacts of the relay S2 is connected with the relay S4, the relays S3 and S4 are connected with the direct-current cross simulation module, and a first group of the relay S3 is connected, and a first group of normally open contacts of the relay S4 is connected with a negative bus of a II-stage direct-current stabilized power supply, and coils of the relays S1, S2, S3 and S4 are all connected with the CPU.
The direct current channeling simulation module comprises a relay S5 connected with a positive bus of a section I direct current stabilized power supply and a relay S6 connected with a negative bus of the section I direct current stabilized power supply, the relays S5 and S6 are respectively provided with at least two groups of contact switches, a first group of normally open contacts of the relay S5 are connected with a relay S7 and a relay S9, a first group of normally closed contacts of the relay S6 are connected with a relay S7, a second group of normally closed contacts of the relay S6 are connected with a relay S10, a second group of normally open contacts of the relay S6 are connected with a relay S8, the relays S7, S8, S9 and S10 are respectively provided with at least two groups of contact switches, a first group of normally open contacts of the relay S7 are connected with a relay S10, a first group of normally open contacts of the relay S8 are connected with a relay S9, the relay S9 is connected with the positive bus of the section II direct current stabilized power, the first group of normally closed contacts of the relay S9 is connected with the first group of normally open contacts of the relay S5, the first group of normally closed contacts of the relay S10 is connected with the second group of normally closed contacts of the relay S6, and the coils of the relays S5, S6, S7, S8, S9 and S10 are all connected with the CPU.
The relays S1, S2, S3, S4, S5, S6, S7, S8, S9 and S10 are all double-pole double-throw relay switches.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides an insulation monitoring device check gauge that can simulate direct current and scurry each other has realized the simulation that the system direct current scurry each other, and the direct current is scurry multiple mode each other and is optional to a protection method of analog device when direct current is scurry each other is provided, disconnection and the closed control equipment through the relay realize positive-positive direct current scurry each other, burden-burden direct current scurry each other, positive-negative two-stage direct current is scurry each other and positive-burden direct current each other simultaneously, avoids causing equipment trouble because of wrong wiring or operation.
Drawings
Fig. 1 is a circuit diagram of the present invention.
Fig. 2 is a circuit diagram of the external connection of the dc cross-talk simulation module of the present invention.
Fig. 3 is a circuit diagram of the dc cross-talk simulation module of the present invention.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings:
examples
As shown in fig. 1 to 3, the dc-to-ac converter comprises an I-stage dc-stabilized power supply and an II-stage dc-stabilized power supply which are respectively grounded through a balance bridge, wherein a positive bus of the I-stage dc-stabilized power supply and a positive bus of the II-stage dc-stabilized power supply are respectively connected with a dc cross simulation module through a relay switch, and the relay switches are both connected with a CPU.
The relay switch comprises a relay S1 corresponding to a positive bus of a section I direct-current stabilized power supply, a relay S2 corresponding to a negative bus of the section I direct-current stabilized power supply, a relay S3 corresponding to a positive bus of the section II direct-current stabilized power supply and a relay S4 corresponding to a negative bus of the section II direct-current stabilized power supply, a CPU is controlled and connected with the relays S1, S2, S3 and S4, at least two groups of contact switches are arranged on the relays S1, S2, S3 and S4, a first group of normally open contacts of the relay S1 are connected with the direct-current cross simulation module, a second group of normally closed contacts of the relay S1 are connected with the relay S3, a first group of normally open contacts of the relay S2 are connected with the direct-current cross simulation module, a second group of contacts of the relay S2 are connected with the S4, the relay S3 and the relay S4 are connected with the direct-current cross simulation module, a first group of normally open contacts of the relay S3 are connected with the positive bus of the direct, the coils of the relays S1, S2, S3 and S4 are all connected to the CPU.
The direct current cross simulation module comprises a relay S5 connected with a positive bus of a section I direct current stabilized power supply and a relay S6 connected with a negative bus of the section I direct current stabilized power supply, wherein the relay S5 and the relay S6 are respectively provided with at least two groups of contact switches, a first group of normally open contacts of the relay S5 are connected with a relay S7 and a relay S9, a first group of normally closed contacts of the relay S6 are connected with a relay S7, a second group of normally closed contacts of the relay S6 are connected with a relay S10, a second group of normally open contacts of the relay S6 are connected with a relay S8, the relays S7, S8, S9 and S10 are respectively provided with at least two groups of contact switches, a first group of normally open contacts of the relay S10 is connected with a first group of normally open contacts of the relay S8 is connected with a relay S9, the relay S9 is connected with the positive bus of the section II direct current stabilized power supply, the relay S10 is connected with a negative contact of the section II, the first set of normally closed contacts of the relay S10 is connected with the second set of normally closed contacts of the relay S6, and the coils of the relays S5, S6, S7, S8, S9 and S10 are all connected with the CPU.
Relays S1, S2, S3, S4, S5, S6, S7, S8, S9, and S10 are all double pole, double throw relay switches.
The relays S1 and S2 control the bus of the I-stage direct-current stabilized power supply to be connected with the direct-current cross simulation module, and when the relays S1 and S2 are both closed, the bus of the I-stage direct-current stabilized power supply is connected with the direct-current cross simulation module. The relays S3 and S4 are used for controlling the bus of the II-section direct-current stabilized power supply to be connected with the direct-current cross simulation module, and when the relays S3 and S4 are both closed, the II-section bus is connected with the direct-current cross simulation module.
The relay S1 controls the power control signal of S3 at the same time, S3 cannot be closed when S1 is not closed, the relay S2 controls the power control signal of S4 at the same time, and S4 cannot be closed when S2 is not closed. Namely, when the device is not connected with the direct current cross simulation module, the bus of the II-section direct current stabilized power supply cannot be connected with the direct current cross simulation module. And the bus of the II-section direct-current stabilized power supply can be connected into the direct-current mutual-crossing simulation unit only when direct-current mutual-crossing simulation is carried out and the I-section direct-current stabilized power supply is connected into the direct-current mutual-crossing simulation unit. Influence caused by abnormal access of the II-section bus is avoided.
The relay S5 is connected with the positive bus of the I-section direct-current stabilized power supply, the on-off control signal of the relay S8 is controlled at the same time, and the relay S8 cannot be closed when the relay S5 is closed, so that the situation that when positive-positive direct current is conducted to mutual crossing, the negative bus of the I-section direct-current stabilized power supply cannot be connected with the positive bus of the II-section direct-current stabilized power supply is guaranteed, and the risk of short circuit caused by abnormal or error control of the switch is avoided. The relay S6 is connected with the negative bus of the I-section direct-current stabilized power supply and controls the switch control signal of the S7, and the S7 cannot be closed when the S6 is closed, so that the condition that the positive bus of the I-section direct-current stabilized power supply cannot be connected with the negative bus of the II-section direct-current stabilized power supply when negative-negative direct current flees with each other is ensured, and the risk of short circuit caused by abnormal or wrong control of the switch is avoided.
The control of the relay switch closing based on the CPU belongs to the prior art and is improved, so the detailed description is omitted.
When positive-positive direct current channeling needs to be simulated, the CPU controls the relays S1, S2, S3, S4 and S5 to be closed, the other relay switches are all opened, and the positive bus of the I-section direct current stabilized power supply is directly connected with the positive bus of the II-section direct current stabilized power supply, so that the positive-positive direct current channeling is realized.
When the equipment needs to simulate the negative-negative direct current mutual channeling, the CPU controls the relays S1, S2, S3, S4 and S6 to be closed, other relay switches are all disconnected, and the negative bus of the I-section direct current stabilized power supply is directly connected with the negative bus of the II-section direct current stabilized power supply, so that the negative-negative direct current mutual channeling is realized.
When the equipment needs to simulate the simultaneous direct current channeling of the positive pole and the negative pole, the CPU controls the relays S1, S2, S3, S4, S5 and S6 to be closed, other relay switches are all switched off, the positive bus of the I-section direct current stabilized voltage power supply is directly connected with the positive bus of the II-section direct current stabilized voltage power supply, the negative bus of the I-section direct current stabilized voltage power supply is directly connected with the negative bus of the II-section direct current stabilized voltage power supply, and the simultaneous direct current channeling of the two stages is realized.
When the equipment needs to simulate the direct current cross between the I section positive bus and the II section negative bus, the CPU controls the relays S1, S2, S3, S4, S5, S7 and S10 to be closed, other switches are all opened, and the positive bus of the I section direct current stabilized voltage power supply is directly connected with the negative bus of the II section direct current stabilized voltage power supply, so that the direct current cross between the positive bus of the I section direct current stabilized voltage power supply and the negative bus of the II section direct current stabilized voltage power supply is realized.
When the equipment needs to simulate the direct current cross between the negative bus of the I section and the positive bus of the II section, the CPU controls the relays S1, S2, S3, S4, S6, S8 and S9 to be closed, other switches are all opened, and the negative bus of the I section direct current stabilized voltage power supply is directly connected with the positive bus of the II section direct current stabilized voltage power supply, so that the direct current cross between the negative bus of the I section direct current stabilized voltage power supply and the positive bus of the II section direct current stabilized voltage power supply is realized.
Claims (4)
1. The insulation monitoring device calibrator capable of simulating direct current mutual channeling is characterized by comprising an I-section direct current stabilized power supply and an II-section direct current stabilized power supply which are grounded through a balance bridge respectively, wherein a positive bus of the I-section direct current stabilized power supply and a positive bus of the II-section direct current stabilized power supply are connected with a direct current mutual channeling simulation module through relay switches respectively, and the relay switches are connected with a CPU.
2. The insulation monitoring device calibrator capable of simulating direct current cross-over according to claim 1, wherein the relay switches comprise a relay S1 corresponding to a positive bus of a section I direct current stabilized power supply, a relay S2 corresponding to a negative bus of the section I direct current stabilized power supply, a relay S3 corresponding to the positive bus of the section II direct current stabilized power supply and a relay S4 corresponding to the negative bus of the section II direct current stabilized power supply, the CPU is in control connection with the relays S1, S2, S3 and S4, the relays S1, S2, S3 and S4 are respectively provided with at least two groups of contact switches, a first group of normally open contacts of the relay S1 is connected with the direct current cross-over simulation module, a second group of normally closed contacts of the relay S1 is connected with the relay S3, a first group of normally open contacts of the relay S2 is connected with the direct current cross-over simulation module, a second group of the relay S2 is connected with the relay S4, the relay S3 and the relay S4 are both connected with the direct current cross-over simulation module, a first group of normally open contacts of the relay S3 is connected with a positive bus of a II-section direct current stabilized power supply, a first group of normally open contacts of the relay S4 is connected with a negative bus of the II-section direct current stabilized power supply, and coils of the relays S1, S2, S3 and S4 are all connected with a CPU.
3. The insulation monitoring device calibrator capable of simulating direct current cross-over according to claim 2, wherein the direct current cross-over simulation module comprises a relay S5 connected with a positive bus of a section I direct current stabilized power supply and a relay S6 connected with a negative bus of the section I direct current stabilized power supply, at least two sets of contact switches are arranged on each of the relay S5 and the relay S6, a relay S7 and a relay S9 are connected with a first set of normally open contacts of the relay S5, a relay S7 is connected with a first set of normally closed contacts of the relay S6, a relay S10 is connected with a second set of normally closed contacts of the relay S6, a relay S8 is connected with a second set of contacts of the relay S6, at least two sets of contact switches are arranged on each of the relays S7, S8, S9 and S10, a first set of normally open contacts of the relay S7 is connected with the relay S10, and a first set of normally open contacts of the relay S, the relay S9 is connected with a positive bus of a section II direct-current stabilized power supply, the relay S10 is connected with a negative bus of the section II direct-current stabilized power supply, a first group of normally closed contacts of the relay S9 is connected with a first group of normally open contacts of the relay S5, a first group of normally closed contacts of the relay S10 is connected with a second group of normally closed contacts of the relay S6, and coils of the relays S5, S6, S7, S8, S9 and S10 are all connected with the CPU.
4. The insulation monitoring device calibrator capable of simulating direct current crosstalk according to claim 3, wherein the relays S1, S2, S3, S4, S5, S6, S7, S8, S9 and S10 are all double-pole double-throw relay switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020510130.0U CN212514978U (en) | 2020-04-09 | 2020-04-09 | Insulation monitoring device calibrator capable of simulating direct current mutual channeling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020510130.0U CN212514978U (en) | 2020-04-09 | 2020-04-09 | Insulation monitoring device calibrator capable of simulating direct current mutual channeling |
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| Publication Number | Publication Date |
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| CN212514978U true CN212514978U (en) | 2021-02-09 |
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|---|---|---|---|
| CN202020510130.0U Expired - Fee Related CN212514978U (en) | 2020-04-09 | 2020-04-09 | Insulation monitoring device calibrator capable of simulating direct current mutual channeling |
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| CN (1) | CN212514978U (en) |
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2020
- 2020-04-09 CN CN202020510130.0U patent/CN212514978U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210209 |