CN105720679A - Hybrid shore power variable frequency power supply system - Google Patents
Hybrid shore power variable frequency power supply system Download PDFInfo
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- CN105720679A CN105720679A CN201610218796.7A CN201610218796A CN105720679A CN 105720679 A CN105720679 A CN 105720679A CN 201610218796 A CN201610218796 A CN 201610218796A CN 105720679 A CN105720679 A CN 105720679A
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- 238000000034 method Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000010248 power generation Methods 0.000 claims description 5
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
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- H02J3/386—
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a hybrid shore power variable frequency power supply system. The system comprises a variable frequency power supply, a doubly-fed generator, a stator switch, a first bypass switch, a second bypass switch and a marine load switch, wherein the input side of the variable frequency power supply is connected with a power grid, the output side of the variable frequency power supply is connected with a rotor of the doubly-fed generator, and a stator of the doubly-fed generator is connected with one end of the marine load switch through the stator switch; one end of the first bypass switch is connected with the rotor side of the doubly-fed generator, and the other end of the first bypass switch is connected with one end of the marine load switch; one end of the second bypass switch is connected with the power grid, the other end of the second bypass switch is connected with one end of the marine load switch, and the other end of the marine load switch is connected with a marine load. The invention further discloses a control method of the system. The system can realize various functions, realizes power supply for 60HZ/50HZ ships, and can also feed back electric energy to the power grid, so that the system is energy-saving, environmentally-friendly and low in cost.
Description
Technical field
The present invention relates to a kind of mixed type bank electricity variable-frequency power sources electric power system, relate to field of new energy generation.
Background technology
Bank power technology, refers to that boats and ships reach port period, stops using the electromotor on boats and ships, and use land power supply instead and power.The power that harbour provides bank electric should ensure that necessary all electric power facility needs for electricity after meeting vessel berth, including: production equipment (as: hatch board driving device, ballast pump etc.) and living facilities, safety equipment and miscellaneous equipment.Owing to load peculiar to vessel includes frequency 50HZ and 60HZ two kinds different, and domestic mains frequency is 50HZ, therefore realize bank to power to ship and need to carry out frequency conversion, the scheme that current bank electricity variable-frequency power sources electric power system mainly adopts is, input side by the 50HZ plant-grid connection variable-frequency power sources device of far-end, outlet side connected boat load, realizes frequency conversion by ac-dc-ac transform.The subject matter of the program is to be needed to carry out powerful long distance power transmission by network system on the bank to variable-frequency power sources input side, and line loss is bigger.And variable-frequency power sources device is made up of power semiconductor, overload capacity is poor, is directly connected with load peculiar to vessel, and capacity of short circuit is little, and on ship, impact load is more, frequently results in converter chaser, power failure.
Summary of the invention
In order to solve the problems referred to above, the present invention proposes a kind of mixed type bank electricity variable-frequency power sources electric power system, and native system can realize several functions, it is achieved for 60HZ/50HZ ship power supply, additionally it is possible to electrical network feedback electric energy, energy-conserving and environment-protective, cost is low.
In order to reach above-mentioned purpose, the solution that the present invention adopts is:
The present invention proposes a kind of mixed type bank electricity variable-frequency power sources electric power system, and this system includes comprising variable-frequency power sources device, and system also includes double-fed generator, stator switch, the first by-pass switch, the second by-pass switch and on-load switch peculiar to vessel；Wherein the input side of variable-frequency power sources is connected with electrical network, and the outlet side of variable-frequency power sources is connected with the rotor of double-fed generator, and the stator of double-fed generator is connected with on-load switch one end peculiar to vessel by stator switch；First by-pass switch one end is connected with double-fed generator rotor-side, and the other end is connected with on-load switch one end peculiar to vessel；Second by-pass switch one end is connected with electrical network, and the other end is connected with on-load switch one end peculiar to vessel, and the on-load switch other end peculiar to vessel is connected with load peculiar to vessel.
Variable-frequency power sources device input side frequency therein is fixed, and outlet side frequency-adjustable saves.
Stator therein switch arranges interlocking with the first by-pass switch, does not allow to be closed at.
A kind of control method of described bank electricity variable-frequency power sources electric power system, including:
One) when system run on wind-power electricity generation pattern be ship power supply time: Guan Bi stator switch, separately the first by-pass switch and the second by-pass switch, close on-load switch peculiar to vessel, variable-frequency power sources device starts, control double-fed generator rotor-side voltage x current, make motor stator side voltage, frequency meet the demand of load peculiar to vessel；
Two) when system run on bypass mode be ship power supply time: separately stator switch, separately the first by-pass switch, closes the second by-pass switch, closes on-load switch peculiar to vessel, and variable-frequency power sources device is out of service；
Three) when system run on conversion power supply pattern be ship power supply time: separately stator switch, closing the first by-pass switch, separately the second by-pass switch, closes on-load switch peculiar to vessel, variable-frequency power sources device starts, and adjustment variable-frequency power sources device output voltage, frequency meet the demand of load peculiar to vessel；
Four) when system runs on wind power-generating grid-connected power generation mode: Guan Bi stator switch, separately the first by-pass switch, close the second by-pass switch, separately on-load switch peculiar to vessel, variable-frequency power sources device starts, adjustment variable-frequency power sources device output voltage, frequency are consistent with electrical network, control wind power generating set output after grid-connected.
Compared with prior art, beneficial effects of the present invention:
-technical scheme provided by the present invention is by switching switch, it may be achieved several functions: when wind-power electricity generation resource abundance, it is possible to provide electric energy with wind power generation unit for dock vessels；When there is no bank electricity demand, the electric energy that wind-power electricity generation sends can feedback to regional power grid；When wind-power electricity generation inadequate resource, it is possible to use the variable-frequency power sources device of wind power generator rotor side provides conversion power supply to boats and ships, frequency-adjustable saves, it is possible to provide 50HZ power supply without variable-frequency power sources device for boats and ships by bypass mode；Not increasing extra cost and can realize several functions, cost performance is high.
Compared to tradition bank electricity scheme, the pattern using wind power generation unit to be ship power supply in-technical scheme provided by the present invention has the advantage that wind-powered electricity generation belongs to regenerative resource, utilize that regenerative resource power supply cost is low, environmental protection；The overload capacity of wind-driven generator is much stronger than power semiconductor, it is adaptable to the application scenario that bank surge load is more.
Accompanying drawing explanation
Fig. 1 is mixed type bank electricity variable-frequency power sources electric power system topology diagram provided by the invention；
Fig. 2 is the first mode of operation of mixed type bank electricity variable-frequency power sources electric power system provided by the invention；
Fig. 3 is the second mode of operation of mixed type bank electricity variable-frequency power sources electric power system provided by the invention；
Fig. 4 is the 3rd mode of operation of mixed type bank electricity variable-frequency power sources electric power system provided by the invention；
Fig. 5 is the 4th mode of operation of mixed type bank electricity variable-frequency power sources electric power system provided by the invention；
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Mixed type bank electricity variable-frequency power sources electric power system topological structure provided by the invention is as shown in Figure 1, this system includes comprising variable-frequency power sources device (5), and system also includes double-fed generator (6), stator switch (1), the first by-pass switch (2), the second by-pass switch (3) and on-load switch peculiar to vessel (4)；Wherein the input side of variable-frequency power sources is connected with electrical network, and the outlet side of variable-frequency power sources is connected with the rotor of double-fed generator, and the stator of double-fed generator is connected with on-load switch one end peculiar to vessel by stator switch；First by-pass switch one end is connected with double-fed generator rotor-side, and the other end is connected with on-load switch one end peculiar to vessel；Second by-pass switch one end is connected with electrical network, and the other end is connected with on-load switch one end peculiar to vessel, and the on-load switch other end peculiar to vessel is connected with load peculiar to vessel.
Variable-frequency power sources device input side frequency therein is fixed, and outlet side frequency-adjustable saves.In bank electricity is applied, the frequency required for boats and ships is generally 50HZ or 60HZ, and the input side frequency of variable-frequency power sources is generally 50HZ, it is necessary to variable-frequency power sources device realizes frequency and regulates.
Stator therein switch arranges interlocking with the first by-pass switch, does not allow to be closed at.
Present invention also offers the control method of described bank electricity variable-frequency power sources electric power system, including:
One) when in wind-power electricity generation resource abundance situation, system can run on wind-power electricity generation pattern when being ship power supply: Guan Bi stator switch, separately the first by-pass switch and the second by-pass switch, close on-load switch peculiar to vessel, as shown in Figure 2；Under this pattern, variable-frequency power sources device provides excitation for rotor, by controlling double-fed generator rotor-side voltage x current, makes motor stator side voltage, frequency meet the demand of load peculiar to vessel；
Two) when boats and ships load needs 50HZ to power and during wind resource deficiency, system can run on bypass mode when being ship power supply: separately stator switch, separately the first by-pass switch, closes the second by-pass switch, close on-load switch peculiar to vessel, as shown in Figure 3.Now variable-frequency power sources device is out of service, and whole system is bypassed by the second by-pass switch, and ship straight gets access to grid in succession, to electrical network power taking.
Three) when boats and ships load needs 60HZ to power and during wind resource deficiency, system can run on conversion power supply pattern when being ship power supply: separately stator switch, closes the first by-pass switch, and separately the second by-pass switch, closes on-load switch peculiar to vessel, as shown in Figure 4.Now wind-driven generator is bypassed, and variable-frequency power sources device starts, and regulates variable-frequency power sources device output 60HZ, meets the demand of load peculiar to vessel；
Four) when not having boats and ships to need to power, when system can run on wind power-generating grid-connected power generation mode: Guan Bi stator switch, separately the first by-pass switch, closes the second by-pass switch, separately on-load switch peculiar to vessel, as shown in Figure 5.Now variable-frequency power sources device starts, and adjustment variable-frequency power sources device output voltage, frequency are consistent with electrical network, controls wind power generating set output after grid-connected.
Above example is only in order to illustrate that technical scheme is not intended to limit; although after those skilled in the art reads the application; carry out various modifications or change with reference to this present invention of above-described embodiment, but these amendments or change all application await the reply the present invention the claimed scope of right application within.
Claims (4)
1. a mixed type bank electricity variable-frequency power sources electric power system, system includes variable-frequency power sources device, it is characterised in that: system also includes double-fed generator, stator switch, the first by-pass switch, the second by-pass switch and on-load switch peculiar to vessel；
Wherein, the input side of variable-frequency power sources is connected with electrical network, and the outlet side of variable-frequency power sources is connected with the rotor of double-fed generator, and the stator of double-fed generator is connected with on-load switch one end peculiar to vessel by stator switch；
First by-pass switch one end is connected with double-fed generator rotor-side, and the other end is connected with on-load switch one end peculiar to vessel；
Second by-pass switch one end is connected with electrical network, and the other end is connected with on-load switch one end peculiar to vessel, and the on-load switch other end peculiar to vessel is connected with load peculiar to vessel.
2. a kind of mixed type bank electricity variable-frequency power sources electric power system as claimed in claim 1, it is characterised in that: described variable-frequency power sources device input side frequency is fixed, and outlet side frequency-adjustable saves.
3. a kind of mixed type bank electricity variable-frequency power sources electric power system as claimed in claim 1, it is characterised in that described stator switch arranges interlocking with the first by-pass switch, does not allow to be closed at.
4. the control method of a mixed type bank electricity variable-frequency power sources electric power system as claimed in claim 1, it is characterised in that concrete steps include:
One) when system run on wind-power electricity generation pattern be ship power supply time: Guan Bi stator switch, separately the first by-pass switch and the second by-pass switch, close on-load switch peculiar to vessel, variable-frequency power sources device starts, control double-fed generator rotor-side voltage x current, make motor stator side voltage, frequency meet the demand of load peculiar to vessel；
Two) when system run on bypass mode be ship power supply time: separately stator switch, separately the first by-pass switch, closes the second by-pass switch, closes on-load switch peculiar to vessel, and variable-frequency power sources device is out of service；
Three) when system run on conversion power supply pattern be ship power supply time: separately stator switch, closing the first by-pass switch, separately the second by-pass switch, closes on-load switch peculiar to vessel, variable-frequency power sources device starts, and adjustment variable-frequency power sources device output voltage, frequency meet the demand of load peculiar to vessel；
Four) when system runs on wind power-generating grid-connected power generation mode: Guan Bi stator switch, separately the first by-pass switch, close the second by-pass switch, separately on-load switch peculiar to vessel, variable-frequency power sources device starts, adjustment variable-frequency power sources device output voltage, frequency are consistent with electrical network, control wind power generating set output after grid-connected.
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| CN201610218796.7A CN105720679B (en) | 2016-04-08 | 2016-04-08 | A kind of mixed type bank electricity variable-frequency power sources electric power system |
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| CN201610218796.7A CN105720679B (en) | 2016-04-08 | 2016-04-08 | A kind of mixed type bank electricity variable-frequency power sources electric power system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130072A (en) * | 2016-07-28 | 2016-11-16 | 青岛创统科技发展有限公司 | A kind of have bank electricity and the composite power source of energy feedback function |
| CN108896843A (en) * | 2018-04-23 | 2018-11-27 | 深圳市禾望电气股份有限公司 | Power power station load test relevant apparatus peculiar to vessel and method |
| CN111072096A (en) * | 2020-01-13 | 2020-04-28 | 武汉理工大学 | Closed water area water quality improving device based on photocatalysis |
| CN111525682A (en) * | 2020-06-03 | 2020-08-11 | 深圳迈格瑞能技术有限公司 | High-efficiency shore power supply device with uninterrupted power supply |
| CN111711341A (en) * | 2020-06-29 | 2020-09-25 | 江南大学 | Power converter control method based on P-D feedback |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130072A (en) * | 2016-07-28 | 2016-11-16 | 青岛创统科技发展有限公司 | A kind of have bank electricity and the composite power source of energy feedback function |
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| CN108896843A (en) * | 2018-04-23 | 2018-11-27 | 深圳市禾望电气股份有限公司 | Power power station load test relevant apparatus peculiar to vessel and method |
| CN108896843B (en) * | 2018-04-23 | 2020-10-30 | 深圳市禾望电气股份有限公司 | Marine power station load test related device and method |
| CN111072096A (en) * | 2020-01-13 | 2020-04-28 | 武汉理工大学 | Closed water area water quality improving device based on photocatalysis |
| CN111072096B (en) * | 2020-01-13 | 2020-12-18 | 武汉理工大学 | Closed water area water quality improving device based on photocatalysis |
| CN111525682A (en) * | 2020-06-03 | 2020-08-11 | 深圳迈格瑞能技术有限公司 | High-efficiency shore power supply device with uninterrupted power supply |
| CN111711341A (en) * | 2020-06-29 | 2020-09-25 | 江南大学 | Power converter control method based on P-D feedback |
| CN111711341B (en) * | 2020-06-29 | 2021-07-27 | 江南大学 | Power converter control method based on P-D feedback |
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