CN105720679B - A kind of mixed type bank electricity variable-frequency power sources electric power system - Google Patents
A kind of mixed type bank electricity variable-frequency power sources electric power system Download PDFInfo
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- CN105720679B CN105720679B CN201610218796.7A CN201610218796A CN105720679B CN 105720679 B CN105720679 B CN 105720679B CN 201610218796 A CN201610218796 A CN 201610218796A CN 105720679 B CN105720679 B CN 105720679B
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- 230000005611 electricity Effects 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000010248 power generation Methods 0.000 claims description 5
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 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
- 230000005284 excitation 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
-
- 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 kind of mixed type bank electricity variable-frequency power sources electric power system, the system includes including variable-frequency power sources device, double-fed generator, stator switch, the first by-pass switch, the second by-pass switch and on-load switch peculiar to vessel；The input side of wherein variable-frequency power sources is connected with power network, and the outlet side of variable-frequency power sources and the rotor of double-fed generator connect, and the stator of double-fed generator is switched by stator to be connected with on-load switch one end peculiar to vessel；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 power 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.The invention also discloses the control method of the system.The system can realize multiple functions, be embodied as 60HZ/50HZ ship power supplies, additionally it is possible to low to power network feedback electric energy, energy-conserving and environment-protective, cost.
Description
Technical field
The present invention relates to a kind of mixed type bank electricity variable-frequency power sources electric power system, it is related to field of new energy generation.
Background technology
Bank electricity technology, during referring to that ship reaches port, the generator on ship is stopped using, and use land power supply power supply instead.
The power that harbour provides bank electricity should ensure that and meet necessary whole electric power facility power demands after vessel berth, including：It is raw
Produce equipment (such as：Hatch board drive device, ballast pump etc.) and living facilities, safety means and miscellaneous equipment.Due to peculiar to vessel
Load includes two kinds of different frequency 50HZ and 60HZ, and domestic mains frequency is 50HZ, therefore realizes bank to ship power supply needs
Frequency conversion is carried out, the scheme that bank electricity variable-frequency power sources electric power system mainly uses at present is, by the 50HZ plant-grid connection variable-frequency electrics of distal end
The input side of source device, outlet side connect load peculiar to vessel, frequency conversion are realized by ac-dc-ac transform.The subject matter of the program be by
Network system needs to carry out powerful long distance power transmission to variable-frequency power sources input side on the bank, and line loss is larger.And variable-frequency power sources device
It is made up of power semiconductor, overload capacity is poor, is directly connected with load peculiar to vessel, and capacity of short circuit is small, and is impacted on ship negative
Lotus is more, frequently results in frequency converter chaser, power failure.
The content of the invention
In order to solve the above problems, the present invention proposes a kind of mixed type bank electricity variable-frequency power sources electric power system, and the system can be real
Existing multiple functions, are embodied as 60HZ/50HZ ship power supplies, additionally it is possible to low to power network feedback electric energy, energy-conserving and environment-protective, cost.
In order to reach above-mentioned purpose, the solution that the present invention uses is：
The present invention proposes a kind of mixed type bank electricity variable-frequency power sources electric power system, and the system is included comprising variable-frequency power sources device, is
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 become
The input side of frequency power is connected with power network, and the outlet side of variable-frequency power sources and the rotor of double-fed generator connect, double-fed generator
Stator is switched by stator and is connected with on-load switch one end peculiar to vessel；First by-pass switch one end connects with double-fed generator rotor-side
Connect, the other end is connected with on-load switch one end peculiar to vessel；Second by-pass switch one end is connected with power network, and the other end is opened with load peculiar to vessel
One end connection is closed, 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, outlet side frequency-adjustable section.
Stator switch therein is set with the first by-pass switch to be interlocked, and does not allow to be closed at.
A kind of control method of the bank electricity variable-frequency power sources electric power system, including：
One) when system operation is when wind-power electricity generation pattern is ship power supply：Stator switch is closed, separates the first by-pass switch
With the second by-pass switch, on-load switch peculiar to vessel is closed, variable-frequency power sources device starts, and controls double-fed generator rotor-side voltage x current,
Motor stator side voltage, frequency is set to meet the needs of load peculiar to vessel；
Two) when system operation is when bypass mode is ship power supply：Stator switch is separated, the first by-pass switch is separated, closes
The second by-pass switch is closed, closes on-load switch peculiar to vessel, variable-frequency power sources device is out of service；
Three) when system operation is when conversion power supply pattern is ship power supply：Stator switch is separated, the bypass of closure first is opened
Close, separate the second by-pass switch, close on-load switch peculiar to vessel, variable-frequency power sources device starts, regulation variable-frequency power sources device output voltage, frequency
Rate meets the needs of load peculiar to vessel；
Four) when system operation is in wind power-generating grid-connected power generation mode：Stator switch is closed, separates the first by-pass switch,
The second by-pass switch is closed, separates on-load switch peculiar to vessel, variable-frequency power sources device starts, regulation variable-frequency power sources device output voltage, frequency
It is consistent with power network, control wind power generating set power output after grid-connected.
Compared with prior art, beneficial effects of the present invention：
- technical scheme provided by the present invention, which passes through, switches switch, and multiple functions can be achieved：When wind-power electricity generation resource is filled
When sufficient, electric energy can be provided with wind power generation unit for dock vessels；When no bank electricity demand, electric energy that wind-power electricity generation is sent
Can be with feedback to regional power grid；When wind-power electricity generation inadequate resource, the variable-frequency power sources device of wind power generator rotor side can be utilized
Conversion power supply is provided to ship, frequency-adjustable section, also can provide 50HZ without variable-frequency power sources device for ship by bypass mode
Power supply；Do not increase extra cost and multiple functions can be achieved, it is cost-effective.
In-technical scheme provided by the present invention using wind power generation unit for ship power supply pattern compared to tradition
Bank electricity scheme has the advantage that：Wind-powered electricity generation belongs to regenerative resource, low, green using regenerative resource power supply cost；Wind-force
The overload capacity of generator is much stronger than power semiconductor, suitable for the more application scenario of bank electricity impact load.
Brief description of the drawings
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；
Embodiment
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Mixed type bank electricity variable-frequency power sources electric power system topological structure provided by the invention is as shown in figure 1, the system includes bag
Device containing variable-frequency power sources (5), system also include double-fed generator (6), stator switch (1), the first by-pass switch (2), the second bypass
Switch (3) and on-load switch peculiar to vessel (4)；The input side of wherein variable-frequency power sources is connected with power network, the outlet side of variable-frequency power sources with
The rotor connection of double-fed generator, the stator of double-fed generator is switched by stator to be connected with on-load switch one end peculiar to vessel；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 power 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, outlet side frequency-adjustable section.In bank electricity application, needed for ship
The frequency wanted is usually 50HZ or 60HZ, and the input side frequency of variable-frequency power sources is usually 50HZ, it is necessary to which variable-frequency power sources device realizes frequency
Rate is adjusted.
Stator switch therein is set with the first by-pass switch to be interlocked, and does not allow to be closed at.
Present invention also offers the control method of the bank electricity variable-frequency power sources electric power system, including：
One) in the case of wind-power electricity generation resource abundance, system can run on wind-power electricity generation pattern when being ship power supply：Closure
Stator switchs, and separates the first by-pass switch and the second by-pass switch, closes on-load switch peculiar to vessel, as shown in Figure 2；Under the 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
Rate meets the needs of load peculiar to vessel；
Two) when ship load needs 50HZ power supplies and wind resource deficiency, it is ship that system, which can run on bypass mode,
During power supply：Stator switch is separated, separates the first by-pass switch, the second by-pass switch is closed, closes on-load switch peculiar to vessel, is such as schemed
Shown in 3.Now variable-frequency power sources device is out of service, and the second by-pass switch bypasses whole system, and ship straight gets access to grid in succession, to electricity
Net power taking.
Three) when ship load needs 60HZ power supplies and wind resource deficiency, system can run on conversion power supply pattern and be
During ship power supply：Stator switch is separated, closes the first by-pass switch, the second by-pass switch is separated, closes on-load switch peculiar to vessel, such as
Shown in Fig. 4.Now wind-driven generator is bypassed, and variable-frequency power sources device starts, and regulation variable-frequency power sources device output 60HZ, is met peculiar to vessel negative
The demand of lotus；
Four) when no ship needs power supply, when system can run on wind power-generating grid-connected power generation mode：Closure stator is opened
Close, separate the first by-pass switch, close the second by-pass switch, separate on-load switch peculiar to vessel, as shown in Figure 5.Now variable-frequency power sources
Device starts, and regulation variable-frequency power sources device output voltage, frequency are consistent with power network, and wind power generating set power output is controlled after grid-connected.
The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, although those skilled in the art
After reading the application, with reference to above-described embodiment, this present invention carries out various modifications or change, but these modifications or change are in Shen
Please pending right application of the invention it is claimed within the scope of.
Claims (3)
1. a kind of 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 device is connected with power network, and the outlet side of variable-frequency power sources device and the rotor of double-fed generator connect
Connect, the stator of double-fed generator is switched by stator to be connected with on-load switch one end peculiar to vessel；
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 power network, and the other end is connected with on-load switch one end peculiar to vessel, and on-load switch peculiar to vessel is another
End is connected with load peculiar to vessel；
The control method of the system includes：
One) when system operation is when wind-power electricity generation pattern is ship power supply：Stator switch is closed, separates the first by-pass switch and the
Two by-pass switches, on-load switch peculiar to vessel is closed, variable-frequency power sources device starts, and controls double-fed generator rotor-side voltage x current, makes double
Feedback generator unit stator side voltage, frequency meet the needs of load peculiar to vessel；
Two) when system operation is when bypass mode is ship power supply：Stator switch is separated, separates the first by-pass switch, closure the
Two by-pass switches, close on-load switch peculiar to vessel, and variable-frequency power sources device is out of service；
Three) when system operation is when conversion power supply pattern is ship power supply：Stator switch is separated, closes the first by-pass switch, point
The second by-pass switch is opened, closes on-load switch peculiar to vessel, variable-frequency power sources device starts, and regulation variable-frequency power sources device output voltage, frequency are full
The demand of foot load peculiar to vessel；
Four) when system operation is in wind power-generating grid-connected power generation mode：Stator switch is closed, separates the first by-pass switch, closure
Second by-pass switch, on-load switch peculiar to vessel is separated, variable-frequency power sources device starts, regulation variable-frequency power sources device output voltage, frequency and electricity
Net is consistent, and double-fed wind generator power output is controlled after grid-connected.
A kind of 2. mixed type bank electricity variable-frequency power sources electric power system as claimed in claim 1, it is characterised in that：The variable-frequency power sources
Device input side frequency is fixed, outlet side frequency-adjustable section.
A kind of 3. mixed type bank electricity variable-frequency power sources electric power system as claimed in claim 1, it is characterised in that the stator switch
Set and interlock with the first by-pass switch, do not allow to be closed at.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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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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| CN105720679B true CN105720679B (en) | 2017-12-15 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130072B (en) * | 2016-07-28 | 2018-08-28 | 青岛创统科技发展有限公司 | A kind of composite power source with bank electricity and energy feedback function |
| 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 |
| 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 |
| 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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| CN101941519A (en) * | 2010-10-08 | 2011-01-12 | 庞志森 | Wind-light energy and shore-electricity charged storage-battery electric ship and control method thereof |
| CN102518545A (en) * | 2011-12-14 | 2012-06-27 | 庞志森 | Pontoon and water flow power generation combined power station |
| CN104158445A (en) * | 2014-09-03 | 2014-11-19 | 中船重工（武汉）船舶与海洋工程装备设计有限公司 | Frequency-conversion soft starter |
| CN104852596A (en) * | 2015-04-17 | 2015-08-19 | 江苏省电力公司张家港市供电公司 | Shore power source system |
| CN105262208A (en) * | 2015-11-09 | 2016-01-20 | 江苏省镇江船厂（集团）有限公司 | Ship shore power automatic conversion device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8085002B2 (en) * | 2006-12-29 | 2011-12-27 | Cummins Power Generation Ip, Inc. | Shore power transfer switch |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941519A (en) * | 2010-10-08 | 2011-01-12 | 庞志森 | Wind-light energy and shore-electricity charged storage-battery electric ship and control method thereof |
| CN102518545A (en) * | 2011-12-14 | 2012-06-27 | 庞志森 | Pontoon and water flow power generation combined power station |
| CN104158445A (en) * | 2014-09-03 | 2014-11-19 | 中船重工（武汉）船舶与海洋工程装备设计有限公司 | Frequency-conversion soft starter |
| CN104852596A (en) * | 2015-04-17 | 2015-08-19 | 江苏省电力公司张家港市供电公司 | Shore power source system |
| CN105262208A (en) * | 2015-11-09 | 2016-01-20 | 江苏省镇江船厂（集团）有限公司 | Ship shore power automatic conversion device |
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