CN107240931A - A kind of high pressure ship shore electric power grid-connected system - Google Patents
A kind of high pressure ship shore electric power grid-connected system Download PDFInfo
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- CN107240931A CN107240931A CN201610187486.3A CN201610187486A CN107240931A CN 107240931 A CN107240931 A CN 107240931A CN 201610187486 A CN201610187486 A CN 201610187486A CN 107240931 A CN107240931 A CN 107240931A
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- high pressure
- electric power
- power supply
- shore electric
- pressure ship
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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
- H02J3/40—Synchronising a generator for connection to a network or to another generator
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention relates to a kind of high pressure ship shore electric power grid-connected system, including high powered cabinet, export high-voltage board, reactor, feed high-voltage board and and the high pressure ship shore electric power supply on same power supply grid, described high powered cabinet end of incoming cables is electrically connected with harbour distribution substation high pressure, the high powered cabinet leading-out terminal is connected with high pressure ship shore electric power supply, described high pressure ship shore electric power supply output end is connected with output high-voltage board, the output high-voltage board is connected with reactor, described reactor is connected with feed high-voltage board, the present invention carries out auto-parallel high pressure ship shore electric power supply according to the actual power consumption of the ship that reaches port, the problem of solving low capacity high pressure ship power supply power supply capacity deficiency of the separate unit to the ship that reaches port.
Description
Technical field
The present invention relates to technical field of electric power, more particularly to a kind of high pressure ship shore electric power grid-connected system.
Background technology
As various countries' Law on Environmental Protection is provided; particularly American-European countries and Asia Countries must stop after being reached port to the ship that reaches port marine auxiliary generate electricity use bank electricity; the Chinese government and each local government have also put into effect relevant laws and regulations and have helped subsidy policy in succession; the encouragement ship that reaches port uses bank electricity; this several years ship shore electric projects have obtained quick booming, and the big haven in the individual whole nation is used ship shore electric successively.But current high pressure ship shore electric power both domestic and external is concentrated mainly on Small And Medium Capacity, power consumption is big during foreign-going ship landing pier, Small And Medium Capacity high pressure ship power supply power supply capacity is difficult to meet large ship need for electricity, energy waste can be caused again to medium and small ship power supply by installing Large Copacity high pressure ship power supply, the high pressure ship power supply that installation size and capacity differs simultaneously can cause the underutilization of resources of port berth again, and cost of investment is big.The conventional power electronic devices that high capacitance high pressure ship power supply is used, price is of a relatively high, and specific components are immature, and the device of low capacity has been mature on the whole.Therefore seek a kind of cost performance height, high pressure ship power supply parallel running can be realized with the high pressure ship power supply grid-connected system of stable operation, increase system output capacity by increasing parallel high voltage ship power supply number, can easily realize power supply redundancy.But the amplitude of high pressure ship power supply auto-parallel Parallel opertation, frequency, phase angle must be consistent, one high pressure ship power supply output of any of which is problematic all to cause grid-connected failure, or even damages high pressure ship power supply.
The content of the invention
In view of deficiencies of the prior art, the present invention provides a kind of high pressure ship shore electric power grid-connected system, the present invention carries out auto-parallel high pressure ship shore electric power supply according to the actual power consumption of the ship that reaches port, the problem of solving low capacity high pressure ship power supply power supply capacity deficiency of the separate unit to the ship that reaches port, the present invention is to use voltage, frequency double-closed-loop control, various parameters collection, regulation are carried out in real time, solve and this problem of parallel running is realized on high pressure ship power supply auto-parallel.
To reach above-mentioned purpose, of the invention adopts the following technical scheme that：
A kind of high pressure ship shore electric power grid-connected system, including high powered cabinet, output high-voltage board, reactor, feed high-voltage board and and high pressure ship shore electric power supply on same power supply grid, described high powered cabinet end of incoming cables is electrically connected with harbour distribution substation high pressure, the high powered cabinet leading-out terminal is connected with high pressure ship shore electric power supply, described high pressure ship shore electric power supply output end is connected with output high-voltage board, the output high-voltage board is connected with reactor, and described reactor is connected with feed high-voltage board.
As the preferred technical solution of the present invention, the reactor is mutual reactor, and the output high-voltage board is that high pressure ship shore electric power exports high-voltage board.
It is used as the preferred technical solution of the present invention, also include high pressure ship frequency conversion/variable-voltage power supply system, automatic paralleling detecting system, combined floodgate conditional logic control system, man-machine interface and loop current suppression system, the combined floodgate conditional logic control system is connected with the high pressure ship frequency conversion/variable-voltage power supply system, automatic paralleling detecting system, man-machine interface and loop current suppression system respectively.
As the preferred technical solution of the present invention, the combined floodgate conditional logic control system is PLC flogic systems.
As the preferred technical solution of the present invention, the man-machine interface is programmable liquid crystal dynamic touch screen.
As the preferred technical solution of the present invention, described high pressure ship frequency conversion/variable-voltage power supply system exports two kinds of electricity 6KV/50Hz, 6.6KV/60Hz processed.
As the preferred technical solution of the present invention, described automatic paralleling detecting system uses closed-loop control, being capable of real-time difference frequency voltage and voltage difference detection automatically.
As the preferred technical solution of the present invention, described PLC flogic systems are controlled with automatic paralleling detecting system real-time frequency, phase, voltage detecting, regulation, catch grid-connected critical point, and PLC sends combined floodgate and car signal, and output high-voltage board closes a floodgate immediately.
It is used as the preferred technical solution of the present invention, described man-machine interface is connected with PLC flogic systems, automatic paralleling detecting system, real-time high pressure ship shore electric power grid-connected system and ship electricity consumption electrical parameter, allow hand over grid-connect mode-automatic/hand grid-connected, auto-parallel automatically adjusts voltage, frequency, phase angle and realizes auto-parallel；Grid-connected manual fine-tuning economize on electricity pressure, frequency are realized grid-connected manually manually.
A kind of high pressure ship shore electric power grid-connected system of the present invention includes high powered cabinet, export high-voltage board, reactor, feed high-voltage board and and the high pressure ship shore electric power supply on same power supply grid, described high powered cabinet end of incoming cables is electrically connected with harbour distribution substation high pressure, the high powered cabinet leading-out terminal is connected with high pressure ship shore electric power supply, described high pressure ship shore electric power supply output end is connected with output high-voltage board, the output high-voltage board is connected with reactor, described reactor is connected with feed high-voltage board, the present invention carries out auto-parallel high pressure ship shore electric power supply according to the actual power consumption of the ship that reaches port, the low capacity high pressure ship power supply power supply capacity that separate unit is solved to the ship that reaches port is not enough, the present invention uses voltage, frequency double-closed-loop control, various parameters collection is carried out in real time, regulation, solve and this problem of parallel running is realized on high pressure ship power supply auto-parallel.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, the required accompanying drawing used in embodiment will be briefly described below, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
Such as Fig. 1 provides a kind of high pressure ship shore electric power grid-connected system for the present invention, and high pressure ship shore electric power and car system include the consistent high pressure ship shore electric power supply of high powered cabinet, specifications parameter, outlet high powered cabinet, mutual reactor, feed high-voltage board.Described high powered cabinet end of incoming cables is electrically connected with harbour distribution substation high pressure, high powered cabinet leading-out terminal is connected with high pressure ship shore electric power supply, described high pressure ship shore electric power supply specifications parameter is consistent, described high pressure ship shore electric power supply output end is connected with output high-voltage board, output high-voltage board connection is connected with reactor, described reactor is connected with feed high-voltage board, and feed high-voltage board is then connected to boat-carrying electrical equipment.
In the present invention, reactor is mutual reactor, and the output high-voltage board is that high pressure ship shore electric power exports high-voltage board.
In the present invention, also include high pressure ship frequency conversion/variable-voltage power supply system, automatic paralleling detecting system, combined floodgate conditional logic control system, man-machine interface and loop current suppression system, the combined floodgate conditional logic control system respectively with the high pressure ship frequency conversion/variable-voltage power supply system, automatic paralleling detecting system, man-machine interface is connected with loop current suppression system, wherein combined floodgate conditional logic control system is PLC flogic systems, man-machine interface is programmable liquid crystal dynamic touch screen, and high pressure ship frequency conversion/variable-voltage power supply system exports two kinds of electricity 6KV/50Hz processed, 6.6KV/60Hz.
In the present invention, automatic paralleling detecting system uses closed-loop control, real-time difference frequency voltage and voltage difference it can detect automatically, and PLC flogic systems and automatic paralleling detecting system real-time frequency, phase, voltage detecting, regulation control, catch grid-connected critical point, PLC sends combined floodgate and car signal, output high-voltage board closes a floodgate immediately, further, man-machine interface and PLC flogic systems, automatic paralleling detecting system is connected, real-time high pressure ship shore electric power grid-connected system and ship electricity consumption electrical parameter, allow hand over grid-connect mode-automatic/hand grid-connected, auto-parallel automatically adjusts voltage, frequency, realize auto-parallel in phase angle；Grid-connected manual fine-tuning economize on electricity pressure, frequency are realized grid-connected manually manually.
In the present embodiment, automatic paralleling system is by controlling cable and communication cable to be connected with input high powered cabinet, output high powered cabinet and high-voltage feedback power cabinet, automatic paralleling system is connected further through communication cable with programmable PLC, automatic paralleling system is connected further through the mode of hard contact with the high powered cabinet of high pressure ship shore electric power output end, real-time beat voltage collection, voltage difference collection；Programmable PLC carries out logic control, voltage, the frequency progress double-closed-loop control gathered with automatic paralleling system, and Chinese herbaceous peony automatic fine tuning high pressure ship shore electric power supply step-up/down, raising frequency/frequency reducing, Automatic-searching meets the synchronous point of simultaneously car, logic control is carried out by the PLC of programming again and sends reclosing command immediately, treats and high pressure ship shore electric power output high powered cabinet closes a floodgate immediately；Real-time voltage/frequency in operation, when any of which one goes wrong or during failure, when can not be solved by itself automatic fine tuning, PLC sends separating brake order immediately, is automatically stopped trouble power and stops power supply；Simultaneously principal and subordinate's high pressure ship shore electric power is set to rated voltage output by car system before operation, and be adjusted and treat and high pressure ship shore electric power further according to real-time voltage detection backfeed loop during car, pass through current detection circuit in operation, two electric power output voltages are finely tuned, closely two output power of power supply is realized and divides equally.When from power failure cisco unity malfunction, main power source will be normally ship load supplying.Also can be normally ship load supplying from power supply when mains power failure cisco unity malfunction.
In the present embodiment, using programmable liquid crystal dynamic touch screen, man-machine interface is more friendly, Chinese and English operation, monitored picture one key switching, manual/auto and car one key switching, parameter modification, service data preservation, failure, alarm inquiry, failure wave-recording, parallel running parameter real time on-line monitoring.
In the present embodiment, the output end of high pressure ship shore electric power supply output high powered cabinet is respectively connecting to mutual reactor input, and the output end of mutual reactor is connected to the input of feeder cabinet, and the output end of feeder cabinet is connected to boat-carrying electrical equipment.When simultaneously Che Shiqi output ends do not have circulation to two high pressure ship shore electric power supplies, because its output separately flows into the different name end of mutual reactor, the magnetic flux that two electric currents are produced is offset, the equivalent inductance value of inductance is zero, pressure drop is not produced to normal output current, does not influence to be output to the voltage of boat-carrying electrical equipment；When there is circulation generation, due to being flowed into from the Same Name of Ends of reactor, the magnetic flux that electric current is produced is strengthened, and at this moment the equivalent inductance value of mutual reactor is very big, has inhibitory action to circulation.
In summary, a kind of high pressure ship shore electric power grid-connected system of the present invention includes high powered cabinet, export high-voltage board, reactor, feed high-voltage board and and the high pressure ship shore electric power supply on same power supply grid, described high powered cabinet end of incoming cables is electrically connected with harbour distribution substation high pressure, the high powered cabinet leading-out terminal is connected with high pressure ship shore electric power supply, described high pressure ship shore electric power supply output end is connected with output high-voltage board, the output high-voltage board is connected with reactor, described reactor is connected with feed high-voltage board, the present invention carries out auto-parallel high pressure ship shore electric power supply according to the actual power consumption of the ship that reaches port, the low capacity high pressure ship power supply power supply capacity that separate unit is solved to the ship that reaches port is not enough, the present invention uses voltage, frequency double-closed-loop control, various parameters collection is carried out in real time, regulation, solve and this problem of parallel running is realized on high pressure ship power supply auto-parallel.
It is described above; only embodiment of the invention, but protection scope of the present invention is not limited thereto, and any those skilled in the art is in technical scope disclosed by the invention; the change or replacement that can be readily occurred in, should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (9)
1. a kind of high pressure ship shore electric power grid-connected system, it is characterized in that, including high powered cabinet, output high-voltage board, reactor, feed high-voltage board and and high pressure ship shore electric power supply on same power supply grid, described high powered cabinet end of incoming cables is electrically connected with harbour distribution substation high pressure, the high powered cabinet leading-out terminal is connected with high pressure ship shore electric power supply, described high pressure ship shore electric power supply output end is connected with output high-voltage board, the output high-voltage board is connected with reactor, and described reactor is connected with feed high-voltage board.
2. a kind of high pressure ship shore electric power grid-connected system according to claim 1, it is characterised in that the reactor is mutual reactor, the output high-voltage board is that high pressure ship shore electric power exports high-voltage board.
3. according to a kind of any described high pressure ship shore electric power grid-connected systems of claim 1-2, it is characterized in that, also include high pressure ship frequency conversion/variable-voltage power supply system, automatic paralleling detecting system, combined floodgate conditional logic control system, man-machine interface and loop current suppression system, the combined floodgate conditional logic control system is connected with the high pressure ship frequency conversion/variable-voltage power supply system, automatic paralleling detecting system, man-machine interface and loop current suppression system respectively.
4. a kind of high pressure ship shore electric power grid-connected system according to claim 3, it is characterised in that the combined floodgate conditional logic control system is PLC flogic systems.
5. a kind of high pressure ship shore electric power grid-connected system according to claim 3, it is characterised in that the man-machine interface is programmable liquid crystal dynamic touch screen.
6. a kind of high pressure ship shore electric power grid-connected system according to claim 3, it is characterised in that described high pressure ship frequency conversion/variable-voltage power supply system exports two kinds of electricity 6KV/50Hz, 6.6KV/60Hz processed.
7. a kind of high pressure ship shore electric power grid-connected system according to claim 3, it is characterised in that described automatic paralleling detecting system uses closed-loop control, being capable of real-time difference frequency voltage and voltage difference detection automatically.
8. a kind of high pressure ship shore electric power grid-connected system according to claim 4, it is characterized in that, described PLC flogic systems are controlled with automatic paralleling detecting system real-time frequency, phase, voltage detecting, regulation, catch grid-connected critical point, PLC flogic systems send combined floodgate and car signal, and output high-voltage board closes a floodgate immediately.
9. a kind of high pressure ship shore electric power grid-connected system according to claim 4, it is characterised in that described man-machine interface is connected with PLC flogic systems and automatic paralleling detecting system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610187486.3A CN107240931A (en) | 2016-03-29 | 2016-03-29 | A kind of high pressure ship shore electric power grid-connected system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610187486.3A CN107240931A (en) | 2016-03-29 | 2016-03-29 | A kind of high pressure ship shore electric power grid-connected system |
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| CN107240931A true CN107240931A (en) | 2017-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610187486.3A Pending CN107240931A (en) | 2016-03-29 | 2016-03-29 | A kind of high pressure ship shore electric power grid-connected system |
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| CN109038682A (en) * | 2018-10-17 | 2018-12-18 | 江苏科技大学 | A kind of device inhibiting shipping shore power system inverse probability |
| CN109459644A (en) * | 2018-12-24 | 2019-03-12 | 广州智光电气技术有限公司 | A kind of bank electricity equipment automatization detection system |
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Cited By (2)
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Application publication date: 20171010 |