CN201418059Y - Power-saving protection device of generator - Google Patents
Power-saving protection device of generator Download PDFInfo
- Publication number
- CN201418059Y CN201418059Y CN2009200260361U CN200920026036U CN201418059Y CN 201418059 Y CN201418059 Y CN 201418059Y CN 2009200260361 U CN2009200260361 U CN 2009200260361U CN 200920026036 U CN200920026036 U CN 200920026036U CN 201418059 Y CN201418059 Y CN 201418059Y
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- CN
- China
- Prior art keywords
- control system
- motor
- generator
- electrical network
- control
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- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Control Of Ac Motors In General (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The utility model discloses a power-saving protection device of generator, comprising a control system which is connected with a flexible control system through optical fiber. The control system is also connected with a generator detector, a microcomputer protection system, a harmonic elimination device and a dynamic power factor correcting circuit. The control system is connected with an electrical network to acquire parameters of the electrical network. A flexible control device is connected with an intelligent switch which is connected with the electrical network, and the intelligent switchcan be softly controlled by the control system. The flexible control device is connected with a generator to quantitatively control the generator. The generator detector acquires various operationalparameters of the generator, and transmits signals to the control system through a CAN bus, and the control system accurately controls the flexible control device according to the signals. The power-saving protection device of generator satisfies load required by the generator, eliminates phenomenon 'a big horse pulls a small carriage', and achieving energy-saving target for the generator by 15 to50 percent.
Description
Technical field
The utility model relates to a kind of motor power saving and protective device, is applicable to the power supply transmission field.
Background technology
Current, market utilizes capacitor to do reactive power compensation to energy-conservation only the only limiting to of motor to motor, and this power-saving technology at first is that energy-saving effect is not remarkable, during automatic control mode, if motor load alters a great deal, capacitor is switching not, if adopt fixedly switching pattern, not overcompensation, be exactly undercompensation, maximum problem is exactly the problem of humorous little amplification, if harmonic content one regularly in the electrical network, capacitor amplifies harmonic wave, infeeds motor, have a strong impact on the life-span of motor, even burn motor.If it is improper to also have the reactive power compensation design of motor, motor start-up and when stopping, the discharge of capacitor can be incorporated in the stator of motor, because capacitor itself is decayed in time, is difficult to carry out both couplings.
In addition, the greatest problem that exists of motor is that the rotation torsion of its output can't cooperate and starts and the load torsion during operation.During electric motor starting, produce 150% to 200% torsion just often part in second usually, make load increase to normal speed, this can cause Drive Structure to be subjected to great impact moment infringement.Meanwhile motor produces high than usual 4 to 10 times starting current, influences the stability of electric power system.So realize soft start.
When motor was in the half load state for a long time, its copper coil winding produced excessive magnetic flux, caused electric efficiency to descend.This magnetic flux (being commonly referred to induced current) is fixed, and causes motor to waste about electric energy of 30% to 50%.
Summary of the invention
The purpose of this utility model exactly in order to address the above problem, provides a kind of simple in structure, tangible electric motor power saving of electric-saving efficiency and protective device.
For achieving the above object, the utility model is achieved through the following technical solutions:
Motor power saving and protective device comprise a control system, and this control system is connected with flexible control system by optical fiber; Described control system also is connected with motor survey meter, Microcomputer Protection, harmonic elimination apparatus and dynamic power factor correcting circuit by optical fiber; Control system is connected with electrical network, gathers the parameter of letter electrical network.
Described Flexible Control device is connected with intelligent switch, and intelligent switch inserts electrical network, and intelligent switch can be accepted the soft control of control system; The Flexible Control device connects motor, and motor is carried out quantitative control.
Described motor survey meter is gathered the various operational factors of motor, by the CAN bus signal is transferred to control system; Control system is controlled the Flexible Control device exactly according to this signal.
Motor power saving of the present utility model and protective device comprise a control system, and this control system is connected with flexible control system by optical fiber, and forceful electric power and light current are isolated, and have realized safe and reliable control; Described control system also is connected with motor survey meter, Microcomputer Protection, harmonic elimination apparatus and dynamic power factor correcting circuit by optical fiber, realizes control reliably, has strengthened anti-jamming capacity.Control system is by PT, and CT gathers the parameter of letter electrical network, realizes monitoring the purpose of electrical network and protective device.Circuit of power factor correction is a kind of power electronics circuit, is mainly used to improve the whetstone magnetic of motor, eliminates the big electric current of motor in startup or stopping process, and the safe operation that improves motor provides idle to motor on the other hand on the one hand, balances idle.
The Flexible Control device is connected with intelligent switch, inserts electrical network then, and intelligent switch can be accepted the soft control of control system; The Flexible Control device connects motor, and motor is carried out quantitative control; So also realized soft starter for motor.
The motor survey meter is monitored the operation conditions of motor in real time, Monitoring Data is sent to control system, control system is according to the operation conditions of motor, produce control impuls and remove to control the Flexible Control device, the Flexible Control device has been realized the quantitative control of electric current and voltage, gives motor the current delivery that is fit to motor rotation.The effect of harmonic elimination apparatus is the harmonic wave in the filtering electrical network, the security of operation of protection electricity-saving appliance, and be used for the harmonic wave of filtering electricity-saving appliance generation itself.Harmonic elimination apparatus has adopted the optical fiber connection with being connected of control device, has strengthened anti-jamming capacity.
The dynamic power factor correcting circuit mainly is the power factor that is used for improving device, reduces the loss of device inside.Circuit of power factor correction is a senior pulse-width modulation circuit, has adopted non-phased wave chopping technology, not only can realize the reactive power compensation to motor, has also realized the protection to motor, and prevents the pollution of motor to electrical network.
Microcomputer Protection is mainly used to protect motor, harmonic elimination apparatus and dynamic power factor correcting circuit.The principle of Microcomputer Protection circuit is to have adopted a high performance chip, can make a response to the operation conditions of each device fast, sends control signal each device is realized control.By the acquired signal part, the digital-to-analogue conversion part, signal processing, operating part is formed.
The beneficial effects of the utility model are: satisfy the required load of motor, eliminated the phenomenon of " low load with strong power ", realized the energy-conservation of motor, energy-saving effect is between 15%-50%.This device has been realized the Flexible Control to motor, not only can soft start, can also the quick control motor with load variations, in the poor occasion of the quality of power supply, the operation that motor can safety has prolonged useful life of motor greatly.The circuit of power factor correction of device, harmonic elimination apparatus can also can also prevent that locking apparatus pollutes electrical network except protective device itself.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a scheme of installation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described further.
In Fig. 1, motor power saving and protective device comprise a control system, and this control system is connected with flexible control system by optical fiber; Described control system also is connected with motor survey meter, Microcomputer Protection, harmonic elimination apparatus and dynamic power factor correcting circuit by optical fiber; Control system is connected with electrical network, gathers the parameter of letter electrical network.
Described Flexible Control device is connected with intelligent switch, and intelligent switch inserts electrical network, and intelligent switch can be accepted the soft control of control system; The Flexible Control device connects motor, and motor is carried out quantitative control.
Described motor survey meter is gathered the various operational factors of motor, by the CAN bus signal is transferred to control system; Control system is controlled the Flexible Control device exactly according to this signal.
In Fig. 2, motor power saving and protective device can connect two motor operations at most, and motor power saving can be connected by wired or wireless with host computer with protective device, accepts the control of host computer.
Claims (3)
1. motor power saving and protective device, it is characterized in that: comprise a control system, this control system is connected with flexible control system by optical fiber; Described control system also is connected with motor survey meter, Microcomputer Protection, harmonic elimination apparatus and dynamic power factor correcting circuit by optical fiber; Control system is connected with electrical network, gathers the parameter of letter electrical network.
2. motor power saving according to claim 1 and protective device is characterized in that: described Flexible Control device is connected with intelligent switch, and intelligent switch inserts electrical network, and intelligent switch can be accepted the soft control of control system; The Flexible Control device connects motor, and motor is carried out quantitative control.
3. motor power saving according to claim 1 and protective device is characterized in that: described motor survey meter is gathered the various operational factors of motor, by the CAN bus signal is transferred to control system; Control system is controlled the Flexible Control device exactly according to this signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200260361U CN201418059Y (en) | 2009-05-22 | 2009-05-22 | Power-saving protection device of generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200260361U CN201418059Y (en) | 2009-05-22 | 2009-05-22 | Power-saving protection device of generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201418059Y true CN201418059Y (en) | 2010-03-03 |
Family
ID=41794490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200260361U Expired - Fee Related CN201418059Y (en) | 2009-05-22 | 2009-05-22 | Power-saving protection device of generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201418059Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135209A (en) * | 2014-08-15 | 2014-11-05 | 浙江绿达能源科技有限公司 | Intelligent electricity saving system for three-phase asynchronous motor |
-
2009
- 2009-05-22 CN CN2009200260361U patent/CN201418059Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135209A (en) * | 2014-08-15 | 2014-11-05 | 浙江绿达能源科技有限公司 | Intelligent electricity saving system for three-phase asynchronous motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100303 Termination date: 20130522 |