CN107994612A - A kind of seamless combination method of ship shore electric - Google Patents
A kind of seamless combination method of ship shore electric Download PDFInfo
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- CN107994612A CN107994612A CN201711397961.0A CN201711397961A CN107994612A CN 107994612 A CN107994612 A CN 107994612A CN 201711397961 A CN201711397961 A CN 201711397961A CN 107994612 A CN107994612 A CN 107994612A
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The present invention relates to a kind of seamless combination method of ship shore electric, comprise the following steps：S1, detection power grid grid-connected conditions, if power grid is in even running state, implement simultaneously network process according to boat-carrying load condition；If power grid is in peak state and carries out limit value to power, boat-carrying progress load control is carried out again grid-connected；S2, complete grid-connected physical connection, and ship-to-shore carries out simultaneous interconnecting by system controller；S3, after stability of grid connection operation after, bank electricity system to onboard power systems send halt instruction, boat-carrying power supply phased out generator after halt instruction is received；S4, after boat-carrying power supply stopping after, shore electric power is unlocked impact load.Compared with prior art, the present invention considers to realize and network process based on the flexible grid-connected method being combined with load control, realizes that ship-to-shore is seamless grid-connected, reduces the influence of simultaneously network process boat-carrying Load on Electric Power Grid.
Description
Technical field
The present invention relates to harbour power supply technique field, more particularly, to a kind of seamless combination method of ship shore electric.
Background technology
Ship shore electric technology, also known as power supply on the bank, marine vessel power alternative system or connection etc. on the bank, refer to by power supply on the bank
Instead of marine auxiliary, a kind of port area Air Pollution Control mode in all electricity consumptions of port lay day is provided for ship.Bank electricity makes
With period, ship should close all subsidiary engines, and lighting apparatus, communication equipment, control device etc. on ship are carried out using power supply on the bank
Power supply, to ensure the normal operation during ship berthing and effective control to ship discharge exhaust gas.
It is external more early for harbour bank electricity technical research, more mature bank electricity system and shore-based power supply pattern are formd,
Many countries have also put into effect some relevant policies transformed in relation to implementing marine shore power system.The domestic research for harbour bank electricity
Start late, at present also in the achievement in technical research, engineering mimoir stage, not yet formation scale application.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of ship shore electric is seamless
Combination method.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of seamless combination method of ship shore electric, comprises the following steps：
S1, detection power grid grid-connected conditions, if power grid is in even running state, implement simultaneously according to boat-carrying load condition
Network process；If power grid is in peak state and carries out limit value to power, boat-carrying progress load control is carried out again grid-connected；
S2, complete grid-connected physical connection, and ship-to-shore carries out simultaneous interconnecting by system controller；
S3, after stability of grid connection operation, bank electricity system sends halt instruction to onboard power systems, and boat-carrying power supply receiving
Phased out generator after halt instruction；
S4, after boat-carrying power supply stopping after, shore electric power is unlocked impact load.
Preferably, it is described that boat-carrying progress load control is specifically included：Interrupt interruptible load and controllable impact load.
Preferably, the boat-carrying power supply during phased out generator after receiving halt instruction, adopt by shore electric power
With sagging tracing control, adjust shore electric power and contribute, incrementally increase power output.
Preferably, the boat-carrying load includes uninterrupted load, controllable impact load and interruptible load.
Preferably, the uninterrupted load includes refrigerator load, the air conditioner load of pleasure boat of container ship.
Preferably, the interruptible load includes the motor that can stop when bringing to.
Compared with prior art, the present invention considers grid-connected to realize based on the flexible grid-connected method being combined with load control
Process, realizes that ship-to-shore is seamless grid-connected, reduces and the influence of network process boat-carrying Load on Electric Power Grid.
Brief description of the drawings
Fig. 1 is the method for the present invention schematic diagram.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to
Following embodiments.
Embodiment
As shown in Figure 1, a kind of seamless combination method of ship shore electric, comprises the following steps：
S1, detection power grid grid-connected conditions, if power grid is in even running state, without special limit value, then according to ship
Carry load condition and implement simultaneously network process；If power grid is in peak state and carries out limit value to power, load tune is carried out to boat-carrying
Control carries out grid-connected again；
S2, complete grid-connected physical connection, and ship-to-shore carries out simultaneous interconnecting by system controller；
S3, after stability of grid connection operation, bank electricity system sends halt instruction to onboard power systems, and boat-carrying power supply receiving
Phased out generator after halt instruction；
S4, after boat-carrying power supply stopping after, shore electric power is unlocked impact load.
Boat-carrying power supply is during phased out generator after receiving halt instruction in step S3, under shore electric power uses
Hang down tracing control, adjusts shore electric power and contributes, incrementally increases power output.
Prepare mainly to include inspection bank electricity system equipment status before connecing electricity, including whether power supply is ready, if there are exception
Deng carrying out physical connection afterwards.After connection, bank electricity system closure switch are initially powered up, and pass through communication in connection procedure
Shipboard information is obtained, is controlled the coordination between order by simulating on ship motor output characteristics, and then progressively reduce ship
Motor output is carried, is progressively transitioned into shore-based power supply, realizes flexible grid-connected and load control.
Boat-carrying load mainly includes uninterrupted load, controllable impact load and can according to grid-connected factor needed to be considered
Interruptible load.Uninterrupted load includes air conditioner load of the refrigerator load of container ship, pleasure boat etc..Controllable impact impact
Load includes boat-carrying water pump etc..Interruptible load includes the loads such as the motor that can stop when bringing to.To boat-carrying in step S1
Load control is carried out to specifically include：Interrupt interruptible load and controllable impact load.
In simultaneously net side, output current is measured using three road CT, is measured using the CT of the mutual electric 1000/5A of letter.CT
Class of accuracy be 0.2S, it is current signal to be sent to plate.In simultaneously net side, surveyed using the PT of the mutual electric 3300/100V of letter
Amount.PT once, secondary side be Y connections, class of accuracy 0.2, it is voltage signal to be sent to plate.
During ship-to-shore is grid-connected, based on ship-to-shore high-speed traffic technology, ship-to-shore both sides operation power parameter is gathered in real time, is subtracted
Few ship and network process impact, realize being reliably connected for ship shore electric and power grid, ensure ship power quality.
Usually configuration reverse-power protection in frequency changing power device, when occurring to be incorporated into the power networks in short-term, marine generator is to harbour
When harbour bank electricity facility side send power, alarm signal, cut-out output are sent.
Claims (6)
1. a kind of seamless combination method of ship shore electric, it is characterised in that comprise the following steps：
S1, detection power grid grid-connected conditions, if power grid is in even running state, implement grid-connected mistake according to boat-carrying load condition
Journey；If power grid is in peak state and carries out limit value to power, boat-carrying progress load control is carried out again grid-connected；
S2, complete grid-connected physical connection, and ship-to-shore carries out simultaneous interconnecting by system controller；
S3, after stability of grid connection operation after, bank electricity system to onboard power systems send halt instruction, boat-carrying power supply receiving shut down
Phased out generator after instruction；
S4, after boat-carrying power supply stopping after, shore electric power is unlocked impact load.
2. the seamless combination method of a kind of ship shore electric according to claim 1, it is characterised in that described to be born to boat-carrying
Lotus regulation and control specifically include：Interrupt interruptible load and controllable impact load.
3. the seamless combination method of a kind of ship shore electric according to claim 1, it is characterised in that the boat-carrying power supply is being received
After to halt instruction during phased out generator, shore electric power uses sagging tracing control, adjusts shore electric power and contributes,
Incrementally increase power output.
4. the seamless combination method of a kind of ship shore electric according to claim 1, it is characterised in that the boat-carrying load includes
Uninterrupted load, controllable impact load and interruptible load.
A kind of 5. seamless combination method of ship shore electric according to claim 4, it is characterised in that the uninterrupted load
Refrigerator load, the air conditioner load of pleasure boat including container ship.
A kind of 6. seamless combination method of ship shore electric according to claim 4, it is characterised in that the interruptible load bag
Include the motor that can stop when bringing to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397961.0A CN107994612A (en) | 2017-12-21 | 2017-12-21 | A kind of seamless combination method of ship shore electric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397961.0A CN107994612A (en) | 2017-12-21 | 2017-12-21 | A kind of seamless combination method of ship shore electric |
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| Publication Number | Publication Date |
|---|---|
| CN107994612A true CN107994612A (en) | 2018-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711397961.0A Pending CN107994612A (en) | 2017-12-21 | 2017-12-21 | A kind of seamless combination method of ship shore electric |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106628096A (en) * | 2016-11-10 | 2017-05-10 | 南京南瑞继保电气有限公司 | Shore power supply system and grid-connection control method thereof |
| CN107394754A (en) * | 2017-07-07 | 2017-11-24 | 国电南瑞科技股份有限公司 | A kind of harbour bank electricity multi-stage combination interlock protection method |
-
2017
- 2017-12-21 CN CN201711397961.0A patent/CN107994612A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106628096A (en) * | 2016-11-10 | 2017-05-10 | 南京南瑞继保电气有限公司 | Shore power supply system and grid-connection control method thereof |
| CN107394754A (en) * | 2017-07-07 | 2017-11-24 | 国电南瑞科技股份有限公司 | A kind of harbour bank electricity multi-stage combination interlock protection method |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180504 |