CN102130455B - Shore-based variable frequency power supply system - Google Patents

Shore-based variable frequency power supply system Download PDF

Info

Publication number
CN102130455B
CN102130455B CN2011100623494A CN201110062349A CN102130455B CN 102130455 B CN102130455 B CN 102130455B CN 2011100623494 A CN2011100623494 A CN 2011100623494A CN 201110062349 A CN201110062349 A CN 201110062349A CN 102130455 B CN102130455 B CN 102130455B
Authority
CN
China
Prior art keywords
power supply
variable frequency
phase
output
frequency power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN2011100623494A
Other languages
Chinese (zh)
Other versions
CN102130455A (en
Inventor
何银萍
王�锋
徐颖
卞琛
王发彬
刘方平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WOLONG ELECTRIC GROUP LIAONING RONGXIN ELECTRIC TRANSMISSION Co.,Ltd.
Wolong Electric Drive Group Co Ltd
Original Assignee
Rongxin Power Electronic Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rongxin Power Electronic Co Ltd filed Critical Rongxin Power Electronic Co Ltd
Priority to CN2011100623494A priority Critical patent/CN102130455B/en
Publication of CN102130455A publication Critical patent/CN102130455A/en
Application granted granted Critical
Publication of CN102130455B publication Critical patent/CN102130455B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J4/00Circuit arrangements for mains or distribution networks not specified as ac or dc
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63JAUXILIARIES ON VESSELS
    • B63J3/00Driving of auxiliaries
    • B63J3/04Driving of auxiliaries from power plant other than propulsion power plant
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/40Synchronising a generator for connection to a network or to another generator
    • H02J3/42Synchronising a generator for connection to a network or to another generator with automatic parallel connection when synchronisation is achieved
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63JAUXILIARIES ON VESSELS
    • B63J3/00Driving of auxiliaries
    • B63J3/04Driving of auxiliaries from power plant other than propulsion power plant
    • B63J2003/043Driving of auxiliaries from power plant other than propulsion power plant using shore connectors for electric power supply from shore-borne mains, or other electric energy sources external to the vessel, e.g. for docked, or moored vessels
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40The network being an on-board power network, i.e. within a vehicle
    • H02J2310/42The network being an on-board power network, i.e. within a vehicle for ships or vessels
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483Converters with outputs that each can have more than two voltages levels
    • H02M7/49Combination of the output voltage waveforms of a plurality of converters
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00Maritime or waterways transport
    • Y02T70/50Measures to reduce greenhouse gas emissions related to the propulsion system

Abstract

The invention relates to a shore-based variable frequency power supply system, which comprises a variable frequency power supply, a port high voltage transformer substation, and a marine power system, wherein the input end of the variable frequency power supply is connected with the port high voltage transformer substation; the output end of the variable frequency power supply is connected with the marine power system; and the power supply system can continuously output three-phase alternating current with a voltage adjustment range of 0-6.6 kV or 0-10 kV and a frequency adjustment range of 0-60 Hz. The output side of the variable frequency power supply is connected with a distribution line via a cable drum, the output high voltage directly distributes power for the marine power system via the distribution line, and the output low voltage passes through a step down transformer and distributes power for the marine power system. The shore-based variable frequency power supply system disclosed by the invention has the advantages that: the power used by the power supply system is derived from the port high voltage transformer substation, so environmental pollution and energy consumption caused by taking a marine fuel generator unit as a power source are greatly reduced, and a high-quality and high-reliability power supply is provided for anchor.

Description

Harbour bank base conversion power supply system
Technical field
The present invention relates to a kind of harbour bank base conversion power supply system.
Background technology
Along with the development of international economic and trade, world's maritime shipping trading volume steadily improves just year by year.China means that as one of world shipping big country more shipping boats and ships will stop Chinese Port.Most of boats and ships adopt the fuel electric generator groups as power source, boats and ships reach port berth after, the auxiliary fuel generator remains in operation on the ship, is the power supply of boats and ships load.Fuel oil takes place can produce multiple pernicious gas in the conversion process of energy at it as a kind of chemical fuel, as nitrogen oxide (NOx), and oxysulfide (SOx), fuel combustion particle etc.These emissions can impact people's health and surrounding environment, and particularly the greenhouse gas of Chan Shenging can damage earth's ozone layer.
For reducing the environmental pollution that noxious gas emission causes, when boats and ships pull in to shore, can adopt the shore-based power supply mode to be the power supply of mooring a boat.China's ac power frequency is 50Hz, if boats and ships are designed to use the 60Hz electric energy, equipment on board for part still can use the 50Hz electric energy, as illumination and firing equipment, but to motor-driven equipment such as water pump, winch and crane, if can't be in the operation of its desin speed, will cause the equipment can't operate as normal.Therefore, electric power system design is the boats and ships of 60Hz, and adopting the prerequisite of shore-based power supply is the 50Hz alternating current need be converted to the 60Hz alternating current, satisfies the power reguirements of Ship Design.
Summary of the invention
The purpose of this invention is to provide a kind of harbour bank base conversion power supply system, the harbour high voltage substation is taken from the electricity consumption of this electric power system, environmental pollution and energy resource consumption that the marine fuel oil generating set produces as power source have largely been reduced, this electric power system output voltage adjustable range continuously is that 0~6.6kV or 0~10kV, frequency-tuning range are the three-phase alternating current of 0~60Hz, and the power supply of high-quality, high reliability is provided for mooring a boat.
For achieving the above object, the present invention is achieved through the following technical solutions:
Harbour bank base conversion power supply system comprises that variable frequency power supply, harbour high voltage substation, boats and ships are subjected to electric system, and the input of variable frequency power supply links to each other with the harbour high voltage substation, and the output of variable frequency power supply is linked to each other by electric system with boats and ships; This electric power system output voltage adjustable range continuously is that 0~6.6kV or 0~10kV, frequency-tuning range are the three-phase alternating current of 0~60Hz.
Described variable frequency power supply is connected with the harbour high voltage substation by cable drum and cable connector.
Described variable frequency power supply outlet side is connected with distribution line by cable drum, and high pressure output directly is subjected to the electric system distribution by distribution line to boats and ships, and low pressure output is subjected to the electric system distribution for boats and ships behind step-down transformer.
Described variable frequency power supply is made up of phase-shifting rectifier transformer, a plurality of power cell, the phase-shifting rectifier transformer secondary is made up of a plurality of out of phase groups, each phase-group is divided into 3 windings, the limit delta-connection is prolonged in employing, every group of phase-group is respectively to same group of power cell power supply, and many level structure is formed in same phase power unit overlapped in series successively, and A phase, B phase, the C power cell of all overlapped in series mutually connect with star fashion, output 6.6kV or 10kV line voltage are boats and ships load power supply.
Described power cell input side is provided with the fuse that shields; the rectification side is formed folk prescription by diode D-a, D-b, D-c, D-d, D-e, D-f and is transmitted rectification circuit to energy; capacitance group C constitutes the DC filtering link; capacitance group C is parallel with and all presses resistance R, and the inversion side is formed the output of 3 level voltages by controlled power switching device VT-a, VT-b, VT-c, VT-d.
Compared with prior art, advantage of the present invention is:
1) inserts boats and ships safely, reliably, easily;
2) take all factors into consideration factors such as power supply number of connections, installation site, power supply capacity, cabling;
3) wideer voltage and frequency-tuning range can be realized voltage stabilization and frequency stabilization output;
4) electrical network and boats and ships Intranet do not have the harmonic wave interference effect on the opposite bank;
5) consistency of assurance electricity peculiar to vessel and bank reference power supply phase sequence and line system;
6) possess phase shortage, short circuit, various protections such as chain, reliable and secure power supply;
7) the convenient boats and ships that reach port are connect with bank reference power supply situation accurately measured, settled accounts;
8) adapt to rugged environments such as harbour high temperature, high humidity, highly corrosive;
9) can adopt the mobile container design, convenient installation, carrying; Also can adopt fixed design, the capital equipment in indoor arrangement bank reference power supply system;
10) simple to operate, easy to maintenance.
Description of drawings
Fig. 1 is the system schematic of harbour bank base conversion power supply system;
Fig. 2 is the 6.6kV variable frequency power supply topological diagram of harbour bank base conversion power supply system;
Fig. 3 is the 10kV variable frequency power supply topological diagram of harbour bank base conversion power supply system;
Fig. 4 is harbour bank base conversion power supply system power cellular construction figure.
Embodiment
See Fig. 1, harbour bank base conversion power supply system comprises that harbour high voltage substation A, the input stube cable reel B of system, variable frequency power supply C, variable frequency power supply outlet side ring main unit D, bank side joint electronic box E, output stube cable reel F, distribution line G, boats and ships are subjected to electric system H.
Harbour high voltage substation A is the power supply of a whole set of bank base conversion power supply system; The input stube cable reel B of system comprises cable drum 1 and cable connector 2, and cable drum 1 is realized free retractable cable length, becomes the hinge of bank side general supply and variable frequency power supply.
Variable frequency power supply C links to each other with harbour high voltage substation A by cable drum 1 and cable connector 2; Variable frequency power supply is the core of harbour bank base conversion power supply system, realizes voltage and frequency adjustable joint, the alternating current of 6kV (10kV)/50Hz input can be converted to 0~6.6kV or 0~10kV/0~60Hz alternating current output.Variable frequency power supply comprises input phase-shifting rectifier transformer T, power cell and control system, and variable frequency power supply can be installed in the container or be installed on indoor.
Ring main unit D is arranged at the variable frequency power supply outlet side, realizes the outlet distribution, can provide error protection for circuit, the security of operation of protection electric power system, and ring main unit possesses the function of measuring that three-phase output voltage, electric current, power etc. show.
Bank side joint electronic box E is connected with ring main unit D, and bank side joint electronic box E has the cable connector interface, and by cable connector 3 and output stube cable reel F, variable frequency power supply C is connected with distribution line G.Cable drum F is subjected to equipment between electric system for connecting shore connection and boats and ships, and cable drum can satisfy the requirement of quick connection and storage, be stored in the time of obsolete on the bank or directly be mounted to moor a boat on.
Distribution line G can realize direct high pressure 6.6kV (10kV) distribution, or by step-down transformer T1 6.6kV (10kV) is down to 440V low pressure.Variable frequency power supply C is connected by electric system by distribution line G with boats and ships.
The electric energy of harbour high voltage substation A is realized direct high voltage power distribution through distribution line G after variable frequency power supply C carries out the output of voltage, frequency adjustment, or after by step-down transformer 6.6kV (10kV) being down to 440V low pressure, the input boats and ships are subjected to the current-collecting device of electric system H.
Boats and ships are installed on the ship by the current-collecting device of electric system, also can adopt looped network to switch cabinet, realize the seamless switching of bank base variable frequency power supply and marine generator.
See Fig. 1, the course of work of native system is:
1) after high pressure 6.6kV (10kV) boats and ships pull in to shore, closed ground switch P1, P2, P3 and P5.After low pressure 440V boats and ships pull in to shore, closed ground switch P1, P2, P4, P6.Shipboard and system earth on the bank.
2) after the system earth, all power cables of connected system and control cable.
3) protection system monitoring cable joint link situation, confirms errorless after, disconnect earthed switch P1, P2, P3, P5 or P1, P2, P4, P6, the grounding system disconnection.Closing Switch S3, the high-pressure frequency-conversion power supply is incorporated public electric wire net into.
4) be prepared as high pressure 6.6kV (10kV) power supply of mooring a boat, Closing Switch S4.Be prepared as low pressure 440V boats and ships and powered by electric system, Closing Switch S5.
5) synchronizer detects the synchronous situation of bank base variable frequency power supply and boats and ships auxiliary generator, finish synchronous after, Closing Switch S6 or S7 manually or automatically.Bank base variable frequency power supply is merged in network of ship.
6) bank base variable frequency power supply and boats and ships auxiliary generator load power supply on the ship simultaneously.Cut-off switch S8, S9, high pressure boats and ships auxiliary generator logs off and shuts down.Cut-off switch S10, S11, low pressure boats and ships auxiliary generator logs off and shuts down.
7) protection system is monitored contingent fault constantly in bank base frequency-converting power supply running, as: earth fault or short trouble.
When 8) boats and ships were prepared departure from port, all generators of boats and ships started, and synchronizer detects the synchronous situation of bank base variable frequency power supply and boats and ships auxiliary generator, finish synchronous after, Closing Switch S8, S9 or S10, S11 manually or automatically.The boats and ships auxiliary generator is merged in network of ship.
9) bank base variable frequency power supply and marine generator load power supply on the ship simultaneously, cut-off switch S6 or S7, bank base variable frequency power supply is excised from marine system.Cut-off switch S2, S3, S4, S5, bank base variable frequency power supply and public electric wire net excision.Closed ground switch P1, P2, P3, P5 or P1, P2, P4, P6, whole system ground connection.
10) disconnect bank base variable frequency power supply and boats and ships and be subjected to the power cable between the electric system and control cable, boats and ships can be departed from port.
See Fig. 2, the harbour bank base variable frequency power supply of output 6.6kV/0~60Hz, link to each other with the harbour high voltage substation by dry type phase-shifting rectifier transformer T, transformer T secondary is made up of 6 out of phase groups, each phase-group is divided into 3 windings, the limit delta-connection is prolonged in employing, and every group of phase-group powered to same group of power cell respectively, as: phase-group 1 is simultaneously to unit A1, unit B 1, unit C1 power supply.Same phase unit is connected successively, unit A1, unit A2, unit A3, unit A4, unit A5, unit A6 connect successively, unit B 1, unit B 2, unit B 3, unit B 4, unit B 5, unit B 6 are connected successively, and unit C1, unit C2, unit C3, unit C4, unit C5, unit C6 connect successively.A phase, B phase, C all unit mutually connect with star fashion, directly export 6.6kV line voltage, are boats and ships load power supply.
See Fig. 3, the harbour bank base variable frequency power supply of output 10kV/0~60Hz, link to each other with the harbour high voltage substation by dry type phase-shifting rectifier transformer T, transformer T secondary is made up of 8 out of phase groups, each phase-group is divided into 3 windings, the limit delta-connection is prolonged in employing, and every group of phase-group powered to same group of unit respectively, as: phase-group 1 is simultaneously to unit A1, unit B 1, unit C1 power supply.Same phase unit is connected successively, as: unit A1, unit A2, unit A3, unit A4, unit A5, unit A6, unit A7, unit A8 connect successively.A phase, B phase, C all unit mutually connect with star fashion, directly export 10kV line voltage, are boats and ships load power supply.
See Fig. 4, power cell input side fuse F1, the F2 of described variable frequency power supply realize defencive function.The rectification side is formed folk prescription by diode D-a, D-b, D-c, D-d, D-e, D-f and is transmitted rectification circuit to energy; capacitance group C constitutes the DC filtering link; resistance R realizes that DC side is all pressed and provide discharge channel for capacitance group C after variable frequency power supply is shut down; the operation of indirect protection equipment and personal security, inversion side controlled power switching device VT-a, VT-b, VT-c, VT-d realize the output of 3 level voltages.

Claims (2)

1. harbour bank base conversion power supply system comprises variable frequency power supply, harbour high voltage substation, Ship Electrical Power System, and the input of variable frequency power supply links to each other with the harbour high voltage substation, and the output of variable frequency power supply links to each other with Ship Electrical Power System; This electric power system output voltage adjustable range continuously is that 0~6.6kV or 0~10kV, frequency-tuning range are the three-phase alternating current of 0~60Hz; Described variable frequency power supply is connected with the harbour high voltage substation by input cable drum and cable connector; Described variable frequency power supply outlet side is connected with distribution line by the output cable drum, and high pressure output is directly given the Ship Electrical Power System distribution by distribution line, and low pressure output is the Ship Electrical Power System distribution behind step-down transformer; It is characterized in that, described variable frequency power supply is made up of phase-shifting rectifier transformer, a plurality of power cell, the phase-shifting rectifier transformer secondary is made up of a plurality of out of phase groups, each phase-group is divided into 3 windings, the limit delta-connection is prolonged in employing, every group of phase-group is respectively to same group of power cell power supply, many level structure is formed in same phase power unit overlapped in series successively, A phase, B phase, the C power cell of all overlapped in series mutually connect with star fashion, output 6.6kV or 10kV line voltage are boats and ships load power supply.
2. harbour according to claim 1 bank base conversion power supply system; it is characterized in that; described power cell input side is provided with the fuse that shields; the rectification side is formed folk prescription by diode D-a, D-b, D-c, D-d, D-e, D-f and is transmitted rectification circuit to energy; capacitance group C constitutes the DC filtering link; capacitance group C is parallel with and all presses resistance R, and the inversion side is formed the output of 3 level voltages by controlled power switching device VT-a, VT-b, VT-c, VT-d.
CN2011100623494A 2011-03-15 2011-03-15 Shore-based variable frequency power supply system Active CN102130455B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011100623494A CN102130455B (en) 2011-03-15 2011-03-15 Shore-based variable frequency power supply system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2011100623494A CN102130455B (en) 2011-03-15 2011-03-15 Shore-based variable frequency power supply system
PCT/CN2012/071448 WO2012122873A1 (en) 2011-03-15 2012-02-22 Shore-based variable frequency power supply system in port

Publications (2)

Publication Number Publication Date
CN102130455A CN102130455A (en) 2011-07-20
CN102130455B true CN102130455B (en) 2013-08-28

Family

ID=44268400

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011100623494A Active CN102130455B (en) 2011-03-15 2011-03-15 Shore-based variable frequency power supply system

Country Status (2)

Country Link
CN (1) CN102130455B (en)
WO (1) WO2012122873A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102130455B (en) * 2011-03-15 2013-08-28 荣信电力电子股份有限公司 Shore-based variable frequency power supply system
CN102555838B (en) * 2012-02-28 2014-04-09 徐秀桃 Shoreside moving type marine substation integrated system
CN103248240A (en) * 2013-04-11 2013-08-14 株洲变流技术国家工程研究中心有限公司 Experimental power supply system for high-voltage electric pump
FR3024600B1 (en) * 2014-08-01 2016-09-02 Schneider Electric Ind Sas SAFETY SYSTEM FOR THE ELECTRICAL CONNECTION OF ELECTRICAL EQUIPMENT TO AN ELECTRIC POWER SUPPLY APPARATUS, AND ELECTRICAL INSTALLATION COMPRISING SUCH A SYSTEM
CN105743083B (en) * 2014-12-12 2018-12-04 浙江国华浙能发电有限公司 The method and ECS control system of power transmission are carried out to the ship that pulls in shore
CN108039825A (en) * 2015-06-23 2018-05-15 吴杰 A kind of supply unit based on phase-shifting carrier wave technology
CN105292427B (en) * 2015-08-13 2017-06-23 上海申光菲德宝供电技术有限公司 Public network transshipment oceangoing ship electricity consumption self-adapting frequency conversion bank electricity system
CN105633957A (en) * 2016-02-19 2016-06-01 北京四方继保自动化股份有限公司 Ship shore-based variable frequency power supply system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS592114A (en) * 1982-06-29 1984-01-07 Nishishiba Denki Kk Electric power supply device for ship
DE102005059761B4 (en) * 2005-12-14 2007-12-06 Siemens Ag Drive system for a watercraft
JP2008178228A (en) * 2007-01-19 2008-07-31 Terasaki Electric Co Ltd Method and system for supplying power from land to ship
CN101488720A (en) * 2008-10-24 2009-07-22 青岛经济技术开发区创统科技发展有限公司 Large power ship shore electric power
CN201509059U (en) * 2009-07-22 2010-06-16 上海国际港务(集团)股份有限公司 Device for fast connecting shore-power frequency-conversion power supply system at port with power receiving system of ship in port
CN101951169A (en) * 2010-09-29 2011-01-19 上海海事大学 Output frequency stabilizing device of variable frequency power source
CN201994664U (en) * 2011-03-15 2011-09-28 荣信电力电子股份有限公司 Shorebased frequency conversion power-supply system of port
CN102130455B (en) * 2011-03-15 2013-08-28 荣信电力电子股份有限公司 Shore-based variable frequency power supply system

Also Published As

Publication number Publication date
WO2012122873A1 (en) 2012-09-20
CN102130455A (en) 2011-07-20

Similar Documents

Publication Publication Date Title
CN102130455B (en) Shore-based variable frequency power supply system
CN102497110B (en) Wharf marine shore power system
Kumar et al. Technical design aspects of harbour area grid for shore to ship power: State of the art and future solutions
CN101488720A (en) Large power ship shore electric power
CN106816874A (en) Shipping shore power system and method for supplying power to based on the compound power network of alternating current-direct current
EP2458724A1 (en) Movable shore power variable frequency power supply device
Mindykowski Power quality on ships: Today and tomorrow's challenges
Khersonsky et al. Challenges of connecting shipboard marine systems to medium voltage shoreside electrical power
Yang et al. Shore to ship converter system for energy saving and emission reduction
CN102255517A (en) Shore power supply for ship
Coppola et al. A sustainable electrical interface to mitigate emissions due to power supply in ports
CN201994664U (en) Shorebased frequency conversion power-supply system of port
US20160013732A1 (en) Converter Station With Diode Rectifier
WO2013175061A1 (en) Power connection between shore and ship
CN105978040B (en) Variable-frequency variable-voltage power supply intelligence inverse probability control system and control method
CN201766362U (en) Shipping shore power system
CN201315548Y (en) A high power ship shore power supply
CN201784479U (en) Shore-based marine voltage and frequency-optional power supply device
CN201509059U (en) Device for fast connecting shore-power frequency-conversion power supply system at port with power receiving system of ship in port
CN102555838B (en) Shoreside moving type marine substation integrated system
CN202541349U (en) Shore movable transformer substation integration system for boat
CN201490897U (en) Moveable shore power frequency-changing power supply device
CN105305449A (en) Ship shore power system
CN101917004B (en) Shore power supply system for ships and power supply method thereof
CN205123261U (en) Boats and ships bank electric system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP03 Change of name, title or address

Address after: 114051, Liaoning, Anshan MTR Eastern Science and technology road, No. 108

Patentee after: Monternet Rongxin Technology Group Limited by Share Ltd

Address before: 114051 Anshan high tech Zone, Liaoning province science and technology road, No. 108

Patentee before: Rongxin Power Electronic Co., Ltd.

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20170122

Address after: 114051, Liaoning, Anshan MTR Eastern Science and technology road, No. 108

Patentee after: Wolong electric group Liaoning Rongxin hi tech Electric Co., Ltd.

Address before: 114051, Liaoning, Anshan MTR Eastern Science and technology road, No. 108

Patentee before: Monternet Rongxin Technology Group Limited by Share Ltd

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20180705

Address after: 114051 Anshan City, Liaoning, the East District of science and Technology Road No. 108

Patentee after: Wolong electric group Liaoning Rongxin electric drive Co., Ltd.

Address before: 114051 Anshan City, Liaoning, the East District of science and Technology Road No. 108

Patentee before: Wolong electric group Liaoning Rongxin hi tech Electric Co., Ltd.

TR01 Transfer of patent right

Effective date of registration: 20210326

Address after: 312000 Economic Development Zone, Shangyu District, Shaoxing City, Zhejiang Province

Patentee after: WOLONG ELECTRIC GROUP Co.,Ltd.

Patentee after: WOLONG ELECTRIC GROUP LIAONING RONGXIN ELECTRIC TRANSMISSION Co.,Ltd.

Address before: 114051 Anshan City, Liaoning, the East District of science and Technology Road No. 108

Patentee before: WOLONG ELECTRIC GROUP LIAONING RONGXIN ELECTRIC TRANSMISSION Co.,Ltd.

TR01 Transfer of patent right