CN204068773U - Adopt the high-tension motor transient state start-up compensation equipment of reactor reduced-voltage starting - Google Patents
Adopt the high-tension motor transient state start-up compensation equipment of reactor reduced-voltage starting Download PDFInfo
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- CN204068773U CN204068773U CN201420460689.1U CN201420460689U CN204068773U CN 204068773 U CN204068773 U CN 204068773U CN 201420460689 U CN201420460689 U CN 201420460689U CN 204068773 U CN204068773 U CN 204068773U
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- tension motor
- controller
- transient state
- relay switch
- reactor
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Abstract
The utility model discloses a kind of high-tension motor transient state start-up compensation equipment adopting reactor reduced-voltage starting, comprise: control system, control system comprises again controller, drive circuit, current detecting protective circuit summation current transformer, the input of current detecting protective circuit is connected with current transformer and output is connected with controller, and drive circuit one end is connected with controller; Reactor, its one end connects power supply by major loop contactless contactor, and the other end is connected to high-tension motor by current transformer; Start compensating circuit, comprise the first relay switch, resistance and the electric capacity of connecting successively, the first relay switch is connected to power supply by major loop contactless contactor; The second relay switch be arranged in parallel with reactor.The utility model can reduce high-tension motor startup and take capacity, improves power factor when starting, reduces starting voltagedrop.High-tension motor starting current also can be made by original 4-5 times rated current, be reduced to 3-3.5 multiple rated current.
Description
Technical field
The utility model relates to a kind of high-tension motor and starts control technology, refers in particular to a kind of high-tension motor transient state start-up compensation equipment adopting reactor reduced-voltage starting.
Background technology
Big-and-middle-sized high-tension motor is when starting, 5-7 starting current doubly can be produced, thus cause the decline of impact to electrical network and line voltage, have a strong impact on the use of grid equipment, and in start-up course, high-tension motor power factor low especially (generally about 0.2 ~ 0.4), causes significant impact to electrical network quality.
At present, for reducing the starting current of high-tension motor, the starting method of general employing has: resistance starting, reactor reduced-voltage starting, star/triangle startup etc., wherein, when big-and-middle-sized high-tension motor adopts reactor reduced-voltage starting mode to start, power factor (PF) is ultralow, starting resistor degradation, still can cause very great adverse effect to electrical network.
Utility model content
The utility model embodiment technical problem to be solved is, a kind of high-tension motor transient state start-up compensation equipment adopting reactor reduced-voltage starting is provided, power factor during to improve electric motor starting, reduce starting current and when high-tension motor starts to the adverse effect that electrical network causes.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme: a kind of high-tension motor transient state start-up compensation equipment adopting reactor reduced-voltage starting, comprising:
Control system, comprise controller, drive circuit, current detecting protective circuit and be connected to detect in real time the Current Transmit of high-tension motor phase current values with high-tension motor, the input of the described current detecting protective circuit output that is connected with Current Transmit is then connected with controller, described drive circuit one end is connected with controller, carrys out according to the instruction of controller each element that drived control is connected with each output of drive circuit;
Reactor L1, its one end connects power supply by major loop contactless contactor K1, and the other end is connected to high-tension motor by Current Transmit;
Start compensating circuit, comprise the first relay switch K2, resistance R1 and the electric capacity C1 that connect successively, described first relay switch K2 is connected to power supply by major loop contactless contactor K1, one end ground connection of described electric capacity C1;
Second relay switch K3, itself and described reactor L1 are arranged in parallel;
The control end of described major loop contactless contactor K1, the first relay switch K2 and the second relay switch K3 is connected to the corresponding output of drive circuit respectively, and under the control of drive circuit break-make.
Further, described compensation arrangement also comprises the input module being connected to arrange and input corresponding operational factor to controller.
Further, described input module is keyboard or touch-screen.
Further, described compensation arrangement comprises being connected with controller and shows the state of compensation arrangement in running and the display module of parameter in real time with the instruction provided according to controller.
Further, described display module is LCD display or CRT monitor.
Further, described compensation arrangement comprises being connected with controller and carries out the alarm module of necessary alarm with the instruction provided according to controller.
Further, described alarm module is sound light alarming circuit.
The beneficial effects of the utility model are: the utility model compensation arrangement can reduce high-tension motor startup and take capacity, improves power factor when high-tension motor starts, reduces starting voltagedrop.And the starting current of high-tension motor can be made by original 4-5 times rated current, be reduced to 3-3.5 multiple rated current, can reduce when high-tension motor starts the adverse effect that electrical network causes.Whole device has that cheap, structure is simple, good reliability, and the features such as compensating circuit utilance is high, and the response time is fast, have larger practical value, mainly can be used for being applied to industrial big-and-middle-sized high-voltage motor and start equipment.
Accompanying drawing explanation
Fig. 1 is the circuit diagram that the utility model adopts the high-tension motor transient state start-up compensation equipment of reactor reduced-voltage starting.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can be combined with each other, and are described in further detail the utility model below in conjunction with the drawings and specific embodiments.
The utility model provides a kind of high-tension motor transient state start-up compensation equipment (hereinafter referred to as compensation arrangement) adopting reactor reduced-voltage starting, as shown in Figure 1, it is connected between power supply 200 and high-tension motor 300, comprising: control system, reactor L1, startup compensating circuit 4, second relay switch K3, input module 5, display module 6 and alarm module 7.
Wherein, control system comprises controller 1, drive circuit 2, current detecting protective circuit 3 and is connected to detect in real time the Current Transmit of high-tension motor 300 phase current values with high-tension motor 300.The input of described current detecting protective circuit 3 output that is connected with Current Transmit is then connected with controller 1; Current Transmit detects the phase current values I1 of high-tension motor 300 in real time and feeds back to current detecting protective circuit 3, then feeds back to controller 1 by current detecting protective circuit 3 and be for further processing.Described drive circuit 2 one end is connected with controller 1, and each output of drive circuit 2 then connects corresponding executive component.Controller 1 as the key control unit of whole compensation arrangement, its according to detected in real time by Current Transmit and the high-tension motor 300 phase current values I1 being supplied to controller 1 by current detecting protective circuit 3 carry out processing and send each executive component that various control command is connected with the output of controlling and driving circuits 2 to drive circuit.
Described reactor L1 one end connects power supply 200 by major loop contactless contactor K1, and the other end is connected to high-tension motor 300 by Current Transmit.Wherein, major loop contactless contactor K1 is for controlling the break-make in whole loop, and reactor L1 plays the effect reducing voltage in the start-up course of high-tension motor 300.The described control end of major loop contactless contactor K1 is connected with the first output of drive circuit 2, can realize path or open circuit under the control of drive circuit 2, and then makes whole compensation arrangement path or open circuit.
Described startup compensating circuit 4 mainly comprises the first relay switch K2, resistance R1 and the electric capacity C1 that connect successively, described first relay switch K2 is connected to outside power supply 200 by major loop contactless contactor K1, and the described control end of the first relay switch K2 is connected with the second output of drive circuit 2, thus controlled the break-make of described first relay switch K2 by drive circuit 2.Start one end ground connection of the electric capacity C1 of compensating circuit 4.
Described second relay switch K3 and described reactor L1 is arranged in parallel, its first end is also connected to outside power supply 200 by major loop contactless contactor K1, second end is connected to the first end of Current Transmit, and control end is connected with the 3rd output of drive circuit 2, thus controlled the break-make of described second relay switch K3 by drive circuit 2.
Described input module 5 is connected with controller 1, is mainly used in some operational factors arranging compensation arrangement, preferably, keyboard can be adopted as input module, certainly, also it is also conceivable to the input module adopting touch-screen etc. common.
Display module 6 is connected with controller 1, and the instruction for providing according to controller 1 shows the state of compensation arrangement in running and parameter in real time.Described display module can preferably LCD display, CRT monitor, certainly, also can adopt other various common displays.
Alarm module 7 is also connected with controller 1, and necessary alarm is carried out in the instruction for providing according to controller 1.Preferred employing can send the sound light alarming circuit of chimes of doom and light simultaneously, thus promotes warning effect.
The utility model compensation arrangement operation principle is as follows:
1, by the start button of high-tension motor start-up circuit device, after controller 1 accepts enabling signal, by drive circuit 2, the the first relay switch K2 controlling major loop contactless contactor K1 and startup compensating circuit 4 closes successively, reactor L1 and startup compensating circuit all enter operating state, and high-tension motor 300 starts to start.
2, in the start-up course of high-tension motor 300, controller 1 detects the phase current values I1 of high-tension motor 300 in real time by Current Transmit, if in the t1 moment, controller 1 detects the phase current I1<1.5(of high-tension motor 300, high-tension motor rated current), the first relay switch K2 that then controller 1 controls to start compensating circuit 4 by drive circuit 2 disconnects, simultaneously, the second relay switch K3 on main circuit closes, at this moment, start compensating circuit 4 namely no longer to work, the startup of high-tension motor 300 completes.
If 3 in high-tension motor 300 start-up course, the real-time phase current values I1>I2 of the high-tension motor 300 that Current Transmit detects, I2 is the starting current alarming value that high-tension motor 300 is preset, then controller 1 is reported to the police by alarm module 7, sends corresponding sound and light alarm signal with alert; Control major loop contactless contactor K1 by drive circuit 2 to disconnect simultaneously, carry out high-tension motor and start overcurrent protection.
4, above starting current alarming value I2 before high-tension motor 300 starts, can carry out optimum configurations and amendment by input module 5.And in the start-up course of high-tension motor 300, the parameters such as the instantaneous value of starting current, the instantaneous value of overcurrent all show on display module 6 in real time by controller 1, check for operating personnel.
The above is embodiment of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection range of the present utility model.
Claims (7)
1. adopt a high-tension motor transient state start-up compensation equipment for reactor reduced-voltage starting, it is characterized in that, described compensation arrangement comprises:
Control system, comprise controller, drive circuit, current detecting protective circuit and be connected to detect in real time the Current Transmit of high-tension motor phase current values with high-tension motor, the input of the described current detecting protective circuit output that is connected with Current Transmit is then connected with controller, described drive circuit one end is connected with controller, carrys out according to the instruction of controller each element that drived control is connected with each output of drive circuit;
Reactor L1, its one end connects power supply by major loop contactless contactor K1, and the other end is connected to high-tension motor by Current Transmit;
Start compensating circuit, comprise the first relay switch K2, resistance R1 and the electric capacity C1 that connect successively, described first relay switch K2 is connected to power supply by major loop contactless contactor K1, one end ground connection of described electric capacity C1;
Second relay switch K3, itself and described reactor L1 are arranged in parallel;
The control end of described major loop contactless contactor K1, the first relay switch K2 and the second relay switch K3 is connected to the corresponding output of drive circuit respectively, and under the control of drive circuit break-make.
2. the high-tension motor transient state start-up compensation equipment of employing reactor reduced-voltage starting according to claim 1, is characterized in that, described compensation arrangement also comprises the input module being connected to arrange and input corresponding operational factor to controller.
3. the high-tension motor transient state start-up compensation equipment of employing reactor reduced-voltage starting according to claim 2, is characterized in that, described input module is keyboard or touch-screen.
4. the high-tension motor transient state start-up compensation equipment of employing reactor reduced-voltage starting according to claim 1, it is characterized in that, described compensation arrangement comprises being connected with controller and shows the state of compensation arrangement in running and the display module of parameter in real time with the instruction provided according to controller.
5. the high-tension motor transient state start-up compensation equipment of employing reactor reduced-voltage starting according to claim 4, is characterized in that, described display module is LCD display or CRT monitor.
6. the high-tension motor transient state start-up compensation equipment of employing reactor reduced-voltage starting according to claim 1, it is characterized in that, described compensation arrangement comprises being connected with controller and carries out the alarm module of necessary alarm with the instruction provided according to controller.
7. the high-tension motor transient state start-up compensation equipment of employing reactor reduced-voltage starting according to claim 6, is characterized in that, described alarm module is sound light alarming circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420460689.1U CN204068773U (en) | 2014-08-14 | 2014-08-14 | Adopt the high-tension motor transient state start-up compensation equipment of reactor reduced-voltage starting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420460689.1U CN204068773U (en) | 2014-08-14 | 2014-08-14 | Adopt the high-tension motor transient state start-up compensation equipment of reactor reduced-voltage starting |
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| CN204068773U true CN204068773U (en) | 2014-12-31 |
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| CN201420460689.1U Expired - Fee Related CN204068773U (en) | 2014-08-14 | 2014-08-14 | Adopt the high-tension motor transient state start-up compensation equipment of reactor reduced-voltage starting |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882895A (en) * | 2015-06-23 | 2015-09-02 | 天津科技大学 | Power factor compensator with safety detection system |
| CN112878413A (en) * | 2020-11-30 | 2021-06-01 | 徐州徐工矿业机械有限公司 | Start-stop control system of electric hydraulic excavator |
| CN113328654A (en) * | 2021-06-07 | 2021-08-31 | 润电能源科学技术有限公司 | Motor starting circuit and parameter determination method, system and device |
-
2014
- 2014-08-14 CN CN201420460689.1U patent/CN204068773U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882895A (en) * | 2015-06-23 | 2015-09-02 | 天津科技大学 | Power factor compensator with safety detection system |
| CN112878413A (en) * | 2020-11-30 | 2021-06-01 | 徐州徐工矿业机械有限公司 | Start-stop control system of electric hydraulic excavator |
| CN113328654A (en) * | 2021-06-07 | 2021-08-31 | 润电能源科学技术有限公司 | Motor starting circuit and parameter determination method, system and device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20180814 |