CN209608349U - A kind of novel micro-capacitance sensor control device - Google Patents
A kind of novel micro-capacitance sensor control device Download PDFInfo
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- CN209608349U CN209608349U CN201821707385.5U CN201821707385U CN209608349U CN 209608349 U CN209608349 U CN 209608349U CN 201821707385 U CN201821707385 U CN 201821707385U CN 209608349 U CN209608349 U CN 209608349U
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- contactor
- circuit
- switch
- time relay
- auxiliary contact
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- 230000005611 electricity Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000002085 persistent effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
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Abstract
The utility model discloses a kind of novel micro-capacitance sensor control devices, including main circuit and control circuit, main circuit includes and the polyphase ac circuit of transformer electrical connection and soft starting circuit corresponding with multiple every respectively phase alternating current circuits respectively, and access has soft start resistance Rs in soft starting circuit；Access has contactor KM1, contactor KM2, time time relay KT, switch SB1 and switch SB2 in control circuit；Contactor KM1 includes contactor KM1 line packet, the normally opened auxiliary contact of contactor KM1 and multiple contactor KM1 main contacts corresponded in access soft starting circuit respectively.The utility model carries out hardware controls using contactor, the time relay, soft start resistance and switch to realize, has control structure simple, control circuit stability is strong, strong antijamming capability.And soft start on-delay control circuit carries out time setting by the time relay, can flexibly be selected between 1s~99min99s, and it is simple to operate.
Description
Technical field
The utility model belongs to microgrid field, and in particular to a kind of novel micro-capacitance sensor control device.
Background technique
With the development of intelligent micro-grid technology, micro-capacitance sensor application field is constantly widened, and the power supply capacity of micro-capacitance sensor is not
It is disconnected to increase, therefore the necessary configuration isolation transformer at the points of common connection of micro-capacitance sensor and bulk power grid, to guarantee the safety of power grid.
Wherein the capacity of the transformer of micro-capacitance sensor configuration needs to meet the requirement of micro-capacitance sensor internal load and power supply, while must
The requirement of upper level distribution capacity must be taken into account, therefore when transformer is powered, is easy the impact by power network current, influences load
Safety.
Utility model content
To solve the above-mentioned problems, the utility model provides a kind of novel micro-capacitance sensor control device, avoids transformer
By the impact of power network current, guarantee the safety utilization of electric power of load, ensures the safe operation of micro-grid system.
The technical solution of the utility model are as follows: a kind of novel micro-capacitance sensor control device, including main circuit and control circuit,
The main circuit includes and the polyphase ac circuit and corresponding with multiple phase alternating current circuits every respectively respectively of transformer electrical connection
Soft starting circuit, access has soft start resistance Rs in the soft starting circuit；
Access has contactor KM1, contactor KM2, time relay KT, switch SB1 and switch in the control circuit
SB2；
The contactor KM1 include contactor KM1 line packet, the normally opened auxiliary contact of contactor KM1 and multiple difference one by one
Contactor KM1 main contacts in corresponding access soft starting circuit；
The contactor KM2 includes contactor KM2 line packet, the normally opened auxiliary contact of contactor KM2, contactor KM2 first normal
It closes auxiliary contact, the second normally closed auxiliary contact of contactor KM2 and multiple correspond respectively and accesses the every of polyphase ac circuit
Contactor KM2 main contacts in a phase line；
The time relay KT includes time relay KT line packet and the contact time relay KT；
The switch SB1, switch SB2, the first normally closed auxiliary contact of contactor KM2 and time relay KT line packet are successively
Connection forms main road, and one end that the main road is located at switch SB1 is connect with phase line, and the other end is connect with zero curve；
Second normally closed auxiliary contact of contactor KM2 and contactor KM1 line packet are in turn connected to form the first branch, described
The first branch has the section of the first normally closed auxiliary contact of contactor KM2 and time relay KT line packet in parallel with access in main road；
The normally opened auxiliary contact of the contactor KM1, the contact time relay KT and contactor KM2 line packet are sequentially connected shape
At second branch, access has switch SB2, the first normally closed auxiliary contact of contactor KM2 and time in the second branch and main road
The section of relay KT line packet is in parallel, and the normally opened auxiliary contact of contactor KM1 are in parallel with switch SB2；
Access has the route of contactor KM2 main contacts to form third branch, accesses in the third branch and second branch
There is the section of the normally opened auxiliary contact of contactor KM1 and the contact time relay KT in parallel.
In the utility model polyphase ac circuit can be three-phase circuit, switch SB1 can be dynamic circuit breaker button switch,
Switch SB2 can switch for making button, and the starting pinciple process for carrying out soft start to transformer using the utility model is as follows:
(1) closure switch SB1；
(2) closure switch SB2；
(3) since the first normally closed auxiliary contact of contactor KM2 and the second normally closed auxiliary contact of contactor KM2 are closed,
Contactor KM1 and time relay KT is powered, after contactor KM1 is powered, the normally opened auxiliary contact of contactor KM1 and contactor
KM1 main contacts closure, i.e., so that electric current is via soft starting circuit inflow transformer, i.e., three-phase voltage passes through contactor KM1 and soft
Start-up resistor Rs is that transformer carries out being pre-charged soft；
(4) after time relay KT is powered, the contact time relay KT is closed after the delay time set, when
Between relay KT contact closure, therefore the case where the normally opened auxiliary contact of contactor KM1 and the contact time relay KT are closed
Under, contactor KM2 line packet is powered, so that contactor KM2 main contacts and the normally opened auxiliary contact of contactor KM2 are powered, contact
Device KM2 main contacts bypasses contactor KM1 main contacts and soft start resistance, and transformer soft start-up process terminates, and connects tentaculum
KM2 main contacts carries out normal power supply, contactor KM1 auxiliary contact closure, and contactor auxiliary contact KM1 bypasses switch SB2；
(5) after the normally opened auxiliary contact of contactor KM2 are powered, contactor KM2 line packet passes through switch SB1 and contactor KM2
Normally opened auxiliary contact (closed state) carry out continued power, and contactor KM2 main contacts is maintained to be in Operating In Persistent Current Mode state；
(6) contactor KM2 normally closed auxiliary contact (disconnection), contactor KM1 line packet power loss, time time relay KT line packet
Power loss, contactor KM1 main contacts disconnect, and soft starting circuit disconnects, and contactor KM1 auxiliary contact and time relay contact are extensive
Again to original state (normally opened)；
(7) switch SB1, contactor KM2 line packet power loss are disconnected, contactor KM2 main contacts disconnects, and transformer and multiphase are powered
Naturally it disconnects, entire circuit is the state restored to before being powered.
Preferably, further including the by-pass switch K1 of switch SB2 in the control circuit.The utility model can also pass through
By-pass switch K1 carries out remote switching control, i.e., using by-pass switch K1 as the by-pass switch of switch SB2, long-range control bypass is opened
It closes K1 and is closed the start-up course, it can be achieved that soft starting circuit.
Preferably, resistance value >=3U of the soft start resistance Rsn/In, wherein In is that transformer rated operational current is effective
Value, Un is that network voltage is virtual value.
The rated operational current of contactor KM1 and contactor KM2 can there are many selections, preferably, the contactor
The rated operational current of KM2 should be greater than the rated operational current of transformer.
Preferably, the rated current of the contactor KM1 is the 30% of transformer rated current.
Preferably, access has fuse FU in phase line in polyphase ac circuit.
Compared with prior art, the beneficial effects of the utility model are embodied in:
The utility model carries out hardware controls using contactor, the time relay, soft start resistance and switch to realize, has
Have that control structure is simple, control circuit stability is strong, strong antijamming capability, and main circuit parameter is convenient for selection adjusting and adjusts, respectively
The advantages that subassembly selection is more flexible, is easy to design of system integration.And soft start on-delay control circuit by the time after
Electric appliance carries out time setting, can flexibly be selected between 1s~99min99s, simple to operate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of main circuit in the utility model.
Fig. 3 is the structural schematic diagram of control circuit in the utility model.
Specific embodiment
As shown in Figure 1, the utility model includes main circuit and control circuit, wherein as shown in Fig. 2, main in the utility model
Circuit includes and the polyphase ac circuit of transformer electrical connection and corresponding with multiple every respectively phase alternating current circuits respectively soft opens
Circuit is moved, access has soft start resistance Rs in soft starting circuit, and access has fuse FU in the phase line in polyphase ac circuit.
As shown in figure 3, access has contactor KM1, contactor KM2, the time relay in control circuit in the utility model
KT, switch SB1 and switch SB2；
Contactor KM1 includes contactor KM1 line packet, the normally opened auxiliary contact of contactor KM1 and multiple corresponds respectively
Access the contactor KM1 main contacts in soft starting circuit；
Contactor KM2 includes contactor KM2 line packet, the normally opened auxiliary contact of contactor KM2, contactor KM2 first normally closed auxiliary
Help contact, the second normally closed auxiliary contact of contactor KM2 and multiple each phases for corresponding access polyphase ac circuit respectively
Contactor KM2 main contacts in line；
Time relay KT includes time relay KT line packet and the contact time relay KT；
Switch SB1, switch SB2, the first normally closed auxiliary contact of contactor KM2 and time relay KT line packet are sequentially connected shape
At main road, one end that main road is located at switch SB1 is connect with phase line, and the other end is connect with zero curve；
The second normally closed auxiliary contact of contactor KM2 and contactor KM1 line packet are in turn connected to form the first branch, the first branch
There is the section of the first normally closed auxiliary contact of contactor KM2 and time relay KT line packet in parallel with access in main road；
The normally opened auxiliary contact of contactor KM1, the contact time relay KT and contactor KM2 line packet are in turn connected to form
Access has switch SB2, the first normally closed auxiliary contact of contactor KM2 and time relay KT in two branches, second branch and main road
The section of line packet is in parallel, and the normally opened auxiliary contact of contactor KM1 are in parallel with switch SB2；
Access has the route of contactor KM2 main contacts to form third branch, and third branch connects with second branch
The section of the normally opened auxiliary contact of tentaculum KM1 and the contact time relay KT is in parallel.
In the utility model polyphase ac circuit can be three-phase circuit, switch SB1 can be dynamic circuit breaker button switch,
Switch SB2 can switch for making button, and the starting pinciple process for carrying out soft start to transformer using the utility model is as follows:
(1) closure switch SB1；
(2) closure switch SB2；
(3) since the first normally closed auxiliary contact of contactor KM2 and the second normally closed auxiliary contact of contactor KM2 are closed,
Contactor KM1 and time relay KT is powered, after contactor KM1 is powered, the normally opened auxiliary contact of contactor KM1 and contactor
KM1 main contacts closure, i.e., so that electric current is via soft starting circuit inflow transformer, i.e., three-phase voltage passes through contactor KM1 and soft
Start-up resistor Rs is that transformer carries out being pre-charged soft；
(4) after time relay KT is powered, the contact time relay KT is closed after the delay time set, when
Between relay KT contact closure, therefore the case where the normally opened auxiliary contact of contactor KM1 and the contact time relay KT are closed
Under, contactor KM2 line packet is powered, so that contactor KM2 main contacts and the normally opened auxiliary contact of contactor KM2 are powered, contact
Device KM2 main contacts bypasses contactor KM1 main contacts and soft start resistance, and transformer soft start-up process terminates, and connects tentaculum
KM2 main contacts carries out normal power supply, contactor KM1 auxiliary contact closure, and contactor auxiliary contact KM1 bypasses switch SB2；
(5) after the normally opened auxiliary contact of contactor KM2 are powered, contactor KM2 line packet passes through switch SB1 and contactor KM2
Normally opened auxiliary contact (closed state) carry out continued power, and contactor KM2 main contacts is maintained to be in Operating In Persistent Current Mode state；
(6) contactor KM2 normally closed auxiliary contact (disconnection), contactor KM1 line packet power loss, time time relay KT line packet
Power loss, contactor KM1 main contacts disconnect, and soft starting circuit disconnects, and contactor KM1 auxiliary contact and time relay contact are extensive
Again to original state (normally opened)；
(7) switch SB1, contactor KM2 line packet power loss are disconnected, contactor KM2 main contacts disconnects, and transformer and multiphase are powered
Naturally it disconnects, entire circuit is the state restored to before being powered.
Preferably, further including the by-pass switch K1 of switch SB2 in control circuit.The utility model can also pass through bypass
Switch K1 carries out remote switching control, i.e., long-range to control by-pass switch K1 using by-pass switch K1 as the by-pass switch of switch SB2
It is closed the start-up course, it can be achieved that soft starting circuit.
Resistance value >=3U of soft start resistance Rs in the utility modeln/In, wherein In is that transformer rated operational current is effective
Value, Un is that network voltage is virtual value.The rated operational current of contactor KM1 and contactor KM2 can there are many selections, such as
The rated operational current of contactor KM2 should be greater than the rated operational current of transformer, and the rated current of contactor KM1 is transformer
The 30% of rated current.
Claims (7)
1. a kind of novel micro-capacitance sensor control device, which is characterized in that including main circuit and control circuit, the main circuit includes
And the polyphase ac circuit of transformer electrical connection and respectively soft starting circuit corresponding with multiple every respectively phase alternating current circuits, institute
Stating access in soft starting circuit has soft start resistance Rs；
Access has contactor KM1, contactor KM2, time relay KT, switch SB1 and switch SB2 in the control circuit；
The contactor KM1 includes contactor KM1 line packet, the normally opened auxiliary contact of contactor KM1 and multiple corresponds respectively
Access the contactor KM1 main contacts in soft starting circuit；
The contactor KM2 includes contactor KM2 line packet, the normally opened auxiliary contact of contactor KM2, contactor KM2 first normally closed auxiliary
Help contact, the second normally closed auxiliary contact of contactor KM2 and multiple each phases for corresponding access polyphase ac circuit respectively
Contactor KM2 main contacts in line；
The time relay KT includes time relay KT line packet and the contact time relay KT；
The switch SB1, switch SB2, the first normally closed auxiliary contact of contactor KM2 and time relay KT line packet are sequentially connected shape
At main road, one end that the main road is located at switch SB1 is connect with phase line, and the other end is connect with zero curve；
Second normally closed auxiliary contact of contactor KM2 and contactor KM1 line packet are in turn connected to form the first branch, and described first
Branch has the section of the first normally closed auxiliary contact of contactor KM2 and time relay KT line packet in parallel with access in main road；
The normally opened auxiliary contact of the contactor KM1, the contact time relay KT and contactor KM2 line packet are in turn connected to form
Access has switch SB2, the first normally closed auxiliary contact of contactor KM2 and time relay in two branches, the second branch and main road
The section of device KT line packet is in parallel, and the normally opened auxiliary contact of contactor KM1 are in parallel with switch SB2；
Access has the route of contactor KM2 main contacts to form third branch, and the third branch connects with second branch
The section of the normally opened auxiliary contact of tentaculum KM1 and the contact time relay KT is in parallel.
2. novel micro-capacitance sensor control device as described in claim 1, which is characterized in that further include out in the control circuit
Close the by-pass switch K1 of SB2.
3. novel micro-capacitance sensor control device as described in claim 1, which is characterized in that the resistance value of the soft start resistance Rs
≥3Un/In, wherein In is transformer rated operational current virtual value, and Un is that network voltage is virtual value.
4. novel micro-capacitance sensor control device as described in claim 1, which is characterized in that the specified work of the contactor KM2
It should be greater than the rated operational current of transformer as electric current.
5. novel micro-capacitance sensor control device as described in claim 1, which is characterized in that the phase in the polyphase ac circuit
Access has fuse FU on line.
6. novel micro-capacitance sensor control device as described in claim 1, which is characterized in that the polyphase ac circuit is three-phase
Alternating current circuit.
7. novel micro-capacitance sensor control device as described in claim 1, which is characterized in that the specified electricity of the contactor KM1
Stream is the 30% of transformer rated current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821707385.5U CN209608349U (en) | 2018-10-22 | 2018-10-22 | A kind of novel micro-capacitance sensor control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821707385.5U CN209608349U (en) | 2018-10-22 | 2018-10-22 | A kind of novel micro-capacitance sensor control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209608349U true CN209608349U (en) | 2019-11-08 |
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ID=68394627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821707385.5U Withdrawn - After Issue CN209608349U (en) | 2018-10-22 | 2018-10-22 | A kind of novel micro-capacitance sensor control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209608349U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149652A (en) * | 2018-10-22 | 2019-01-04 | 天合光能股份有限公司 | A kind of novel micro-capacitance sensor control of soft device |
| CN113949256A (en) * | 2021-10-15 | 2022-01-18 | 广东电网有限责任公司 | Topological structure for soft start control of converter of flexible direct-current distribution network |
-
2018
- 2018-10-22 CN CN201821707385.5U patent/CN209608349U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149652A (en) * | 2018-10-22 | 2019-01-04 | 天合光能股份有限公司 | A kind of novel micro-capacitance sensor control of soft device |
| CN109149652B (en) * | 2018-10-22 | 2024-01-16 | 天合光能股份有限公司 | Novel micro-grid soft start control device |
| CN113949256A (en) * | 2021-10-15 | 2022-01-18 | 广东电网有限责任公司 | Topological structure for soft start control of converter of flexible direct-current distribution network |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20191108 Effective date of abandoning: 20240116 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20191108 Effective date of abandoning: 20240116 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |