CN208226905U - Large-scale High-Pressure starting device of motor - Google Patents
Large-scale High-Pressure starting device of motor Download PDFInfo
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- CN208226905U CN208226905U CN201820782893.3U CN201820782893U CN208226905U CN 208226905 U CN208226905 U CN 208226905U CN 201820782893 U CN201820782893 U CN 201820782893U CN 208226905 U CN208226905 U CN 208226905U
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Abstract
A kind of Large-scale High-Pressure starting device of motor, the breaker of the integrated capacitors including the anti-device of a dry type point, several integrated capacitors, the power circuit breaker for connecting high-tension motor and power supply and switching and the PLC controller with programming in logic function；The dry reactor reduces the set end voltage of high-tension motor；The integrated capacitors are used to compensate reactive power required when high voltage large-sized motor starting, and excision integrated capacitors are controlled by PLC；The dry reactor is divided into multiple dry tap heads, according to the variation of electrical network capacity, adjusts connect tap, the integrated capacitors are segmented into multiple groups, and can any switching；It has structure simple, easy to maintain, safe and reliable, rationally efficient, and it is suitable for all large-scale high-voltage asynchronous motor and synchronous motor, the starting reliability of Large-scale High-Pressure motor can be effectively improved, ensures the features such as high-tension motor can be realized one push start success.
Description
Technical field
The present invention relates to a kind of Large-scale High-Pressure starting device of motor, and it is in need using reduced voltage starting side to be suitable for institute
The Large-scale High-Pressure motor that formula starts, including asynchronous motor and synchronous motor.
Background technique
With the development of science and technology with the enlargement of air separation unit, the high-tension motor power of various compressors is driven
It is increasing, due to electrical network capacity is limited, sometimes it is difficult to realize using conventional reduced voltage starting and is smoothly started.In order to
To the shock problem of power grid when preferable solution Large-scale High-Pressure motor starting, large high-voltage motor starting difficulty is solved the problems, such as,
Using Large-scale High-Pressure starting device of motor, so that motor can obtain sufficient reactive power, reduction pair in starting process
The influence of power grid, and can guarantee that high-tension motor smoothly starts.
Conventional Large-scale High-Pressure motor voltage reducing starter needs to absorb a large amount of nothing from power grid during starting
Function power, and then lead to the too low operation for influencing other electrical equipments of network voltage, even result in the parking of other electrical equipments.
Summary of the invention
It is an object of the invention to overcome the shortcomings of existing conventional buck starting device, and then provide a kind of structure letter
It is single, easy to maintain, safe and reliable, rationally efficient, and it is suitable for all large-scale high-voltage asynchronous motor and synchronous motor, it can
The starting reliability of Large-scale High-Pressure motor is effectively improved, it is successfully large-scale high to ensure that high-tension motor can be realized one push start
Press starting device of motor.
The object of the present invention is achieved by the following technical solutions: a kind of Large-scale High-Pressure starting device of motor, packet
Include the anti-device of a dry type point, several integrated capacitors, the power circuit breaker for connecting high-tension motor and power supply and throwing
The breaker for the integrated capacitors cut and PLC controller with programming in logic function；
The dry reactor reduces the set end voltage of high-tension motor；
The integrated capacitors are used to compensate reactive power required when high voltage large-sized motor starting, and pass through
PLC controls excision integrated capacitors.
As preferred: the dry reactor is divided into multiple dry tap heads, is connect according to the variation of electrical network capacity, adjustment
Tap, the integrated capacitors are segmented into multiple groups, and can any switching；
The power circuit breaker is used to connect the connection of high-tension motor and power supply, guarantee high-tension motor and with it is integrated
The synchronous investment power grid of formula capacitor；
The electric current of the PLC controller monitoring voltage of power grid, starting device with programming in logic function and to starting device from
Body is protected, moreover it is possible to efficiently control sequence of movement of the starting device in relation to breaker.
The present invention is capable of providing reactive power required when high-tension motor reduced voltage starting, so that the voltage of power grid be enable to control
It makes within the scope range of the fluctuation of voltage that country allows；Dry reactor is mainly responsible for the effect of reduced voltage starting in starting process,
And then guarantee that the set end voltage of Large-scale High-Pressure motor can satisfy the requirement of minimum motor set end voltage.
In actual control process, needs to guarantee high-tension motor and integrated capacitors while putting into operation to power grid (i.e.
Integrated capacitors are first closed by PLC), power grid is put into too early to avoid integrated capacitors, causes the voltage of power grid
It increases, causes the overvoltage of network system.
It is simple, easy to maintain, safe and reliable, rationally efficient that the present invention has structure, and is suitable for all Large-scale High-Pressures
Asynchronous motor and synchronous motor can effectively improve the starting reliability of Large-scale High-Pressure motor, ensure high-voltage electric function
The features such as enough realizing one push start success.
Detailed description of the invention
Fig. 1 is principle schematic diagram of the invention.
Specific embodiment
Below in conjunction with attached drawing, the present invention will be described in detail: shown in Fig. 1, a kind of Large-scale High-Pressure electricity of the present invention
Engine start device, including the anti-device DK of a dry type point, several integrated capacitors, for connecting high-tension motor M and electricity
Circuit breaker Q F1, QF2, QFC1, QFC2, QFCn and band of the integrated capacitors of the power circuit breaker QF and switching of network source
The PLC controller of programming in logic function；
The dry reactor DK reduces the set end voltage of high-tension motor M；
Integrated capacitors C1, C2 ... the Cn is used to compensate idle function required when high voltage large-sized motor M is started
Rate, and excision integrated capacitors are controlled by PLC.
Dry reactor of the present invention is divided into multiple dry tap heads, according to the variation of electrical network capacity, adjusts connect pumping
Head, the integrated capacitors are segmented into multiple groups, and can any switching；
The power circuit breaker is used to connect the connection of high-tension motor and power supply, guarantee high-tension motor and with it is integrated
The synchronous investment power grid of formula capacitor；
The electric current of the PLC controller monitoring voltage of power grid, starting device with programming in logic function and to starting device from
Body is protected, moreover it is possible to efficiently control sequence of movement of the starting device in relation to breaker.
Embodiment: shown in Fig. 1, a kind of starting device of large-size machine, by 1 dry reactor DK, several groups integrated form
Capacitor C1, C2 ... Cn are in parallel, relevant circuit breaker Q F1, QF2, QFC1, QFC2, QFCn, and with programming in logic function
PLC controller composition.
In high-tension motor prestart, the circuit breaker Q F1 of starting device and high-tension motor are carried out by PLC controller
Connection, the QF2 being connected with power supply are temporarily in gate-dividing state, and QFC1, QFC2, QFCn are closed a floodgate by programmable controller PLC, device
Into reduced voltage starting standby mode.
Programmable controller PLC is connected to DCS or after other control system sends starting command, issues and closes to circuit breaker Q F2
Lock instruction, high-tension motor enter starting state.Under the state, dry reactor is mainly responsible for and is depressured in starting process
Dynamic effect guarantees that the set end voltage of Large-scale High-Pressure motor can satisfy the requirement of minimum motor set end voltage, and rises
The a large amount of reactive power absorbed from power grid is needed in dynamic process, is partially provided by integrated capacitors, is guaranteed the electricity of power grid
Range of the pressure fluctuation without departing from permission.Along with the starting process of high-tension motor, at first, the voltage of power grid has one
A obvious decline, the continuous improvement of the revolving speed to high-tension motor start required reactive power and reduce, the electricity of power grid
Pressing off the beginning is gradually increasing, the starting current decline of high-tension motor, until certain phase, issues circuit breaker Q F by PLC controller
Combined floodgate order, it is waiting receive QF combined floodgate instruction after, PLC controller issue circuit breaker Q F1 separating brake order, high-tension motor into
Enter the full-voltage starting stage, PLC controller continues to monitor the voltage of power grid, and starts orderly excision integrated capacitors, makes power grid
Voltage is always ensured that within the scope of one relatively reasonable.
After high-tension motor enters idle running, programmable controller PLC issues order, and circuit breaker Q F2 separating brake is realized high
Being kept completely separate for pressure starting device of motor and power grid and high-tension motor, smoothly completes starting process.
The main function of apparatus of the present invention is to need to absorb a large amount of nothing from power grid in large high-voltage motor starting process
Function power is partially provided by integrated capacitance, prevents network voltage drop excessive, while be depressured by dry reactor
It is dynamic, efficiently solve the problems, such as Large-scale High-Pressure motor starting.
Claims (2)
1. a kind of Large-scale High-Pressure starting device of motor, it is characterised in that: including a dry reactor, several integrated electrics
The breaker and band of the integrated capacitors of container, the power circuit breaker for connecting high-tension motor and power supply and switching are patrolled
Collect the PLC controller of programing function；
The dry reactor reduces the set end voltage of high-tension motor；
The integrated capacitors are used to compensate reactive power required when high voltage large-sized motor starting, and by PLC come
Control excision integrated capacitors.
2. Large-scale High-Pressure starting device of motor according to claim 1, it is characterised in that: the dry reactor point
Connect tap is adjusted, the integrated capacitors are segmented into more according to the variation of electrical network capacity at multiple dry tap heads
Group, and can any switching；
The power circuit breaker is used to connect the connection of high-tension motor and power supply, guarantees high-tension motor and and integrated electric
The synchronous investment power grid of container；
The electric current of the PLC controller monitoring voltage of power grid, starting device with programming in logic function and to starting device itself into
Row protection, moreover it is possible to efficiently control sequence of movement of the starting device in relation to breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820782893.3U CN208226905U (en) | 2018-05-24 | 2018-05-24 | Large-scale High-Pressure starting device of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820782893.3U CN208226905U (en) | 2018-05-24 | 2018-05-24 | Large-scale High-Pressure starting device of motor |
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| Publication Number | Publication Date |
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| CN208226905U true CN208226905U (en) | 2018-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820782893.3U Active CN208226905U (en) | 2018-05-24 | 2018-05-24 | Large-scale High-Pressure starting device of motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112117936A (en) * | 2020-09-19 | 2020-12-22 | 大力电工襄阳股份有限公司 | Starting control method of TCS reduction and compensation solid soft starting device |
-
2018
- 2018-05-24 CN CN201820782893.3U patent/CN208226905U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112117936A (en) * | 2020-09-19 | 2020-12-22 | 大力电工襄阳股份有限公司 | Starting control method of TCS reduction and compensation solid soft starting device |
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