CN206302354U - A kind of adjustable soft-start by lowering voltage device of high voltage motor multi-stag reactance - Google Patents
A kind of adjustable soft-start by lowering voltage device of high voltage motor multi-stag reactance Download PDFInfo
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- CN206302354U CN206302354U CN201621220221.0U CN201621220221U CN206302354U CN 206302354 U CN206302354 U CN 206302354U CN 201621220221 U CN201621220221 U CN 201621220221U CN 206302354 U CN206302354 U CN 206302354U
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- voltage
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- circuit breaker
- vacuum circuit
- soft starter
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Abstract
The utility model is related to a kind of adjustable soft-start by lowering voltage device of high voltage motor multi-stag reactance.Including electricity grid substation voltage transformer pt, electricity grid substation equipped circuit Current Transmit, electricity grid substation equipped circuit vacuum circuit breaker QF1, soft starter starts vacuum circuit breaker QF2, bypass vacuum circuit breaker QF3, vacuum contactor KM1, KM2, KM3, multi-tap high voltage reactor L, soft starter builtin voltage transformer VT, intelligent controller PLC.The utility model passes through the parameters such as acquisition testing three-phase power grid voltage, motor current, drives multistage reactor impedance regulation control, realizes high-voltage electric soft-start by lowering voltage.It has starting performance good, and reliability is high, and no-harmonic wave pollution, stability is high, long service life, the advantages of maintenance and repair facilitates.
Description
Technical field
The utility model is related to a kind of adjustable soft-start by lowering voltage device of high voltage motor multi-stag reactance, belongs to high pressure
Technical field of motors.
Background technology
Motor is used widely as a kind of device for converting electrical energy into mechanical energy in all trades and professions.Large-scale electricity
Motivation is preferentially using the motor of 6KV and 10KV voltage class, and in current electric power network finite capacity, plant area's system power network changes
Make dilatation paces relatively slow, and during high-tension motor full-voltage starting, starting current is larger（4-8 times of rated current）.Start
Electric current is big, causes voltage to decline to power network, the normal operation of miscellaneous equipment on influence power network, while starting current generation is electronic
Power heat and danger of burst are larger, influence the service life of motor.
So, the demand to flexible starter for electric motor is more and more urgent, and the electrical equipment soft start that China uses at present has liquid
State soft initiator, auto-transformer soft initiator, solid-state controllable silicon soft initiator etc..Above-mentioned soft starter exists different degrees of
Problem or worn-out end, such as liquid soft starter device power consumption are big, and poor work stability, maintenance workload is big；Solid-state controllable silicon soft initiator
The soft initiator of this similar operation principle, produces substantial amounts of higher hamonic wave in start-up course, greatly pollution is caused to power network,
It is more expensive to manufacture, complex structure, user is difficult in maintenance；Auto-transformer soft initiator application motor power (output) is limited in scope, only
It is used below in 2000KW.
The content of the invention
The technical problem solved required for the utility model is to overcome above-mentioned deficiency, and a kind of high pressure for providing is handed over
The stream adjustable soft-start by lowering voltage device of motor multi-stag reactance.It has starting performance good, and reliability is high, no-harmonic wave pollution, surely
Qualitative height, long service life, the advantages of maintenance and repair facilitates.
The technical solution of the utility model is：A kind of adjustable soft-start by lowering voltage dress of high voltage motor multi-stag reactance
Put, it is characterised in that：Including electricity grid substation voltage transformer pt, electricity grid substation equipped circuit Current Transmit, power network
Transformer station equipped circuit vacuum circuit breaker QF1, soft starter starts vacuum circuit breaker QF2, soft starter bypass vacuum circuit breaker
QF3, soft starter major loop vacuum contactor KM1, multistage reactor Regulation Control vacuum contactor KM2, KM3, multi-tap is high
Pressure reactor L, soft starter builtin voltage transformer VT and intelligent controller PLC；During flexible starter for electric motor, High Level AC Voltage leads to
Electricity grid substation equipped circuit vacuum circuit breaker QF1 is crossed, soft starter starts vacuum circuit breaker QF2, multi-tap high voltage reactor
L, vacuum contactor KM1, KM2, KM3, are connected to high-tension motor M and form soft starting loop；After start completion, when normally running,
By intelligent program control, High Level AC Voltage is connect by equipped circuit vacuum circuit breaker QF1, soft starter bypass breaker QF3
In high-tension motor M, run well；Intelligent controller PLC and electricity grid substation voltage transformer pt, soft starter inside electricity
Pressure transformer VT, electricity grid substation equipped circuit Current Transmit constitutes closed-loop control system.
Multi-tap high voltage reactor L described in the utility model, binding post is drawn from 100%, 85%, 70% winding.
Before normal devoting oneself to work, electricity grid substation equipped circuit vacuum circuit breaker QF1, soft starter rises the utility model
Dynamic vacuum circuit breaker QF2, soft starter bypass vacuum circuit breaker QF3, vacuum contactor KM1, KM2, KM3 in open position,
Electricity grid substation voltage transformer pt, soft starter multi-tap high voltage reactor L, soft starter builtin voltage transformer VT and intelligence
PLC is normal for energy controller.When site operation personnel need to start high-tension motor, starting button, intelligent controller PLC inspections are pressed
Voltage, the phase of line voltage transformer PT are surveyed, Current Transmit electric current and all position of the switch states with placing cabinet are equal
There is a point position, driven by program is closed with placing cabinet QF1 vacuum circuit breakers by SECO, then the vacuum contactor KM1 that closes, then
The soft starter that closes starts vacuum circuit breaker QF2；By the impedance reduced voltage starting of reactor L, high-tension motor rotates.Intelligence
Energy controller PLC detection units detect the voltage transformer pt of electricity grid substation immediately, the Current Transmit electricity with placing cabinet
Stream, soft start voltage transformer VT, by programme-control, carries out stepped impedance change, drives step-down pressure regulation, and vacuum of first closing connects
Tentaculum KM1, close vacuum contactor KM2 again.Then, then by detection unit detect the Current Transmit electric current with placing cabinet
When being dropped in start-up course below 1.5 times of motor rated current, close bypass vacuum circuit breaker QF3, disconnects and starts vacuum
Circuit breaker Q F2, disconnection vacuum contactor KM1, KM2, KM3, are connected by bypass with motor, and motor runs well.
When needing to stop high-tension motor, site operation personnel presses stop button, and intelligent controller PLC drives, and disconnects
Placing cabinet QF1 vacuum circuit breakers and all of vacuum circuit breaker of voltage solid soft starter cabinet, switch of vacuum contactor, motor are matched somebody with somebody by transformer station
Shut down.
Exceed protection setting value when intelligent controller PLC detection units detect the Current Transmit electric current with placing cabinet
Or receive with placing cabinet is comprehensive protect the fault-signal sent when, driver element disconnects transformer station with placing cabinet QF1 vacuum circuit breakers immediately
Device and all of vacuum circuit breaker of voltage solid soft starter cabinet, switch of vacuum contactor, motor failure, malfunction indicator lamp are bright.
The size of the high-voltage electric acc power of user's selection, as long as the region installed according to high-tension motor, by place
The calculating of regional power grid relevant parameter, the requirement of step-down pressure regulation, selection desired characteristic impedance, voltage class, the multi-tap of the class of insulation
High voltage reactor L is solved.
The beneficial effects of the utility model：
1st, it is applied widely；Be can be used in enterprises such as oil plant, chemical plant, steam power plants, it is convenient for installation and maintenance；
2nd, system, control circuit, strong interference immunity, good stability are constituted using intelligent controller PLC；
3rd, compared with the soft starters such as solid-state controllable silicon soft initiator, liquid soft starter device, multi-stag reactor automatically may be used
Downgrading pressure soft starter device has starting performance good, and reliability is high, and no-harmonic wave pollution, stability is high, long service life, safeguards dimension
Repair the advantages of facilitating.
Brief description of the drawings
Fig. 1：The utility model single line schematic diagram；
Fig. 2：Intelligent controller PLC wiring diagrams；
Fig. 3：Intelligent controller PLC program ladder diagram.
In figure：PT:Electricity grid substation voltage transformer；QF1：Electricity grid substation equipped circuit vacuum circuit breaker；QF2：It is soft
Starter starts vacuum circuit breaker；QF3：Soft starter bypasses vacuum circuit breaker；KM1：Soft starter major loop vacuum contactor；
KM2、KM3：Multistage reactor Regulation Control vacuum contactor；L：Multi-tap high voltage reactor；VT：Soft starter builtin voltage is mutual
Sensor；PLC intelligent controllers；CT：Electricity grid substation equipped circuit current transformer；M：High-tension motor.
Specific embodiment：
1st, as shown in figure 1, the utility model includes electricity grid substation voltage transformer pt, electricity grid substation equipped circuit electricity
Current transformer CT, electricity grid substation equipped circuit vacuum circuit breaker QF1, soft starter start vacuum circuit breaker QF2, soft starter
Bypass vacuum circuit breaker QF3, soft starter major loop vacuum contactor KM1, multistage reactor Regulation Control vacuum contactor
KM2, KM3, multi-tap high voltage reactor L, soft starter builtin voltage transformer VT and intelligent controller PLC；Soft of motor
When dynamic, High Level AC Voltage starts vacuum circuit breaker QF2 by electricity grid substation equipped circuit vacuum circuit breaker QF1, soft starter,
Multi-tap high voltage reactor L, vacuum contactor KM1, KM2, KM3, are connected to high-tension motor M and form soft starting loop；Start
Cheng Hou, when normally running, by intelligent program control, High Level AC Voltage is by equipped circuit vacuum circuit breaker QF1, soft starter
Bypass breaker QF3, is connected to high-tension motor M, runs well；Intelligent controller PLC and electricity grid substation voltage transformer
PT, soft starter builtin voltage transformer VT, electricity grid substation equipped circuit Current Transmit constitute closed-loop control system.
2nd, as depicted in figs. 1 and 2, before normally devoting oneself to work, electricity grid substation matches somebody with somebody placing cabinet QF1 vacuum circuit breakers, soft
Dynamic device starts vacuum circuit breaker QF2, bypass vacuum circuit breaker QF3, vacuum contactor KM1, KM2, KM3 in open position, electricity
Net the voltage transformer pt of transformer station, soft starter multi-tap epoxy resins insulation high voltage reactor L, voltage transformer VT and intelligence
PLC is normal for energy controller.When site operation personnel need to start high-tension motor, starting button, intelligent controller PLC inspections are pressed
Voltage, the phase of line voltage transformer PT are surveyed, Current Transmit electric current and all position of the switch states with placing cabinet are equal
Have a point position, driven by program is closed with placing cabinet QF1 vacuum circuit breakers by SECO, then close vacuum contactor KM1 and then
The soft starter that closes starts vacuum circuit breaker QF2；By the impedance reduced voltage starting of reactor L, high-tension motor is applied and turned over.Intelligence
Energy controller PLC detection units detect the voltage transformer pt of electricity grid substation, the Current Transmit electricity with placing cabinet immediately
Stream, soft start voltage transformer VT, by programme-control, carry out stepped impedance change, drive step-down pressure regulation, and vacuum of first closing connects
Tentaculum KM1, close vacuum contactor KM2 again.Then, then by detection unit detect the Current Transmit electric current with placing cabinet
When being dropped in start-up course below 1.5 times of motor rated current, close bypass vacuum circuit breaker QF3, disconnects and starts vacuum
Circuit breaker Q F2, disconnection vacuum contactor KM1, KM2, KM3, are connected by bypass with motor, and motor runs well.
When needing to stop high-tension motor, site operation personnel presses stop button, and intelligent controller PLC drives, and disconnects
Placing cabinet QF1 vacuum circuit breakers and all of vacuum circuit breaker of voltage solid soft starter cabinet, switch of vacuum contactor, motor are matched somebody with somebody by transformer station
Shut down.
Exceed protection setting value when intelligent controller PLC detection units detect the Current Transmit electric current with placing cabinet
Or receive with placing cabinet is comprehensive protect the fault-signal sent when, driver element disconnects transformer station with placing cabinet QF1 vacuum circuit breakers immediately
Device and all of vacuum circuit breaker of voltage solid soft starter cabinet, switch of vacuum contactor, motor failure, malfunction indicator lamp are bright.
The specific embodiment of the simply utility model of foregoing description, various illustrations are not in the essence of utility model
Appearance is construed as limiting, and person of an ordinary skill in the technical field is done after specification has been read to foregoing specific embodiment
Modification or deformation, all without departing from the spirit and scope of utility model.
Claims (2)
1. the adjustable soft-start by lowering voltage device of a kind of high voltage motor multi-stag reactance, it is characterised in that：Including power network power transformation
Stand voltage transformer pt, electricity grid substation equipped circuit Current Transmit, electricity grid substation equipped circuit vacuum circuit breaker
QF1, soft starter starts vacuum circuit breaker QF2, and soft starter bypass vacuum circuit breaker QF3, soft starter major loop vacuum connects
Tentaculum KM1, multistage reactor Regulation Control vacuum contactor KM2, KM3, multi-tap high voltage reactor L, soft starter inside are electric
Pressure transformer VT and intelligent controller PLC；During flexible starter for electric motor, High Level AC Voltage passes through electricity grid substation equipped circuit vacuum
Circuit breaker Q F1, soft starter starts vacuum circuit breaker QF2, multi-tap high voltage reactor L, vacuum contactor KM1, KM2, KM3,
It is connected to high-tension motor M and forms soft starting loop；After start completion, when normally running, by intelligent program control, high-voltage alternating
Electricity is connected to high-tension motor M by equipped circuit vacuum circuit breaker QF1, soft starter bypass breaker QF3, runs well；
Intelligent controller PLC and electricity grid substation voltage transformer pt, soft starter builtin voltage transformer VT, electricity grid substation are allotted
Loop current transformer CT constitutes closed-loop control system.
2. the adjustable soft-start by lowering voltage device of high voltage motor multi-stag reactance according to claim 1, its feature exists
In：Multi-tap high voltage reactor L draws binding post from 100%, 85%, 70% winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621220221.0U CN206302354U (en) | 2016-11-14 | 2016-11-14 | A kind of adjustable soft-start by lowering voltage device of high voltage motor multi-stag reactance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621220221.0U CN206302354U (en) | 2016-11-14 | 2016-11-14 | A kind of adjustable soft-start by lowering voltage device of high voltage motor multi-stag reactance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206302354U true CN206302354U (en) | 2017-07-04 |
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ID=59202747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621220221.0U Expired - Fee Related CN206302354U (en) | 2016-11-14 | 2016-11-14 | A kind of adjustable soft-start by lowering voltage device of high voltage motor multi-stag reactance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206302354U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106571753A (en) * | 2016-11-14 | 2017-04-19 | 岳阳长炼机电工程技术有限公司 | High-voltage alternating-current-motor multistage-reactance adjustable voltage-reduction soft start device |
| CN108448947A (en) * | 2018-05-24 | 2018-08-24 | 浙江智海化工设备工程有限公司 | A kind of Large-scale High-Pressure starting device of motor |
-
2016
- 2016-11-14 CN CN201621220221.0U patent/CN206302354U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106571753A (en) * | 2016-11-14 | 2017-04-19 | 岳阳长炼机电工程技术有限公司 | High-voltage alternating-current-motor multistage-reactance adjustable voltage-reduction soft start device |
| CN108448947A (en) * | 2018-05-24 | 2018-08-24 | 浙江智海化工设备工程有限公司 | A kind of Large-scale High-Pressure starting device of motor |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170704 Termination date: 20211114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |