CN201766362U - Shipping shore power system - Google Patents

Shipping shore power system Download PDF

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Publication number
CN201766362U
CN201766362U CN2010202913897U CN201020291389U CN201766362U CN 201766362 U CN201766362 U CN 201766362U CN 2010202913897 U CN2010202913897 U CN 2010202913897U CN 201020291389 U CN201020291389 U CN 201020291389U CN 201766362 U CN201766362 U CN 201766362U
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CN
China
Prior art keywords
load
breaker
circuit breaker
land
boats
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.)
Expired - Lifetime
Application number
CN2010202913897U
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Chinese (zh)
Inventor
叶晓松
王金全
吴振飞
邢鸣
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.)
Chinese People's Liberation Army Naval Engineering Design Institute
Original Assignee
Jiangsu Zhenan Power Equipment 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 Jiangsu Zhenan Power Equipment Co Ltd filed Critical Jiangsu Zhenan Power Equipment Co Ltd
Priority to CN2010202913897U priority Critical patent/CN201766362U/en
Application granted granted Critical
Publication of CN201766362U publication Critical patent/CN201766362U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a shipping shore power system comprising a transformer, a landing electric load and a shipping electric load. A transformer low-voltage side is grounded through a grounding circuit breaker and a grounding impedance which are connected in parallel; and the landing electric load is connected in parallel with the shipping electric load and connected with the transformer low-voltage side, wherein a landing loading circuit breaker is arranged between the landing electric load and a transformer; a shipping load circuit breaker is arranged between the shipping electric load and the transformer; the grounding circuit breaker is interlocked with the shipping load circuit breaker; the grounding circuit breaker is switched on when the ships are not in port and the shore power system is used, so that the grounding impedance is in short circuit and the shore power system supplies the electricity for the landing electric load; when the ships are in port in need of electricity, the shipping load circuit breaker is switched on, the grounding circuit breaker is switched off, the shore power system is grounded through the grounding impedance, and the landing electric load and the shipping electric load share the shore power system. The utility model has the advantages of quick conversion of power supply ways, reliable work and all-around means protection, and improves the utilization efficiency of the shore power system and the stability of work security.

Description

A kind of ship shore electric system
Technical field
The utility model belongs to the power technology field, relates to the ship shore electric technology, is a kind of ship shore electric system.
Background technology
The ship shore electric technology is boats and ships used a kind of power supply techniques when pulling in to shore.At present, the ship shore electric technology is generally taked to the boats and ships electricity consumption is provided with the isolated neutral IT system separately, or when pulling in to shore on the naval vessel the land with the load excision, be the method for ship power supply by the land with neutral ground TN system.Though first method is reliable, when boats and ships did not pull in to shore, the bank electric system was in idle state, caused great waste; Though second method is economical, when boats and ships pull in to shore electricity consumption, the land will quit work with the using electricity system of load; and because the bank electric system adopts neutral-point solid ground TN system; in case taking place, the transformer single-phase earthing will cause the protection tripping operation, power failure, and influence is to the continuity of ship power supply.The spot ship ac power supply system all adopts IT system, and in the electrical network of land, common 380/220V power supply grid all adopts three-phase four-wire system.
Therefore, research land electricity consumption and electricity peculiar to vessel are compatible, or compatible in short-term bank power technology, are of great immediate significance and practical value.
Summary of the invention
Problem to be solved in the utility model is: shared when the ship shore electric technology can not realize land electricity consumption and boats and ships electricity consumption at present, bank electric system utilance is low, and the security and stability of bank electric system has much room for improvement.
The technical solution of the utility model is: a kind of ship shore electric system, comprise transformer, land power load and boats and ships power load, step down side is by earthing breaker and impedance ground ground connection in parallel, land power load and the parallel connection of boats and ships power load, be connected with step down side, wherein be provided with land load circuit breaker between land power load and the transformer, be provided with load circuit breaker peculiar to vessel between boats and ships power load and the transformer, described earthing breaker and load circuit breaker peculiar to vessel interlocking, earthing breaker separating brake when load breaker open operation peculiar to vessel when earthing breaker closes a floodgate, load breaker closing peculiar to vessel.
Further, the boats and ships power load is by the direct ground connection of protective earthing line; The land power load is a three-phase four-wire system, is connected earthing breaker and impedance ground ground connection in parallel with the neutral line by the protective earthing line.
The boats and ships power load is provided with insulation monitoring and warning device.
As optimal way, the land also is provided with main breaker with between being connected of load circuit breaker and load circuit breaker peculiar to vessel and step down side in the utility model.The many first class of protection of main breaker effect, as first class of protection, the land uses load circuit breaker and load circuit breaker peculiar to vessel as second class protection.
In the utility model work, the bank electric system is in power supply state, when not having boats and ships to pull in to shore to use the bank electric system, load breaker open operation peculiar to vessel, earthing breaker closes a floodgate, make the impedance ground short circuit, the transformer of bank electric system is the power supply of land power load, bank electric system and the direct ground connection of land power load; When boats and ships pull in to shore electricity consumption, load breaker closing peculiar to vessel, the earthing breaker separating brake, bank electric system neutral point and land power load are by impedance ground ground connection, the shared bank electric system of land power load and boats and ships power load.
In the prior art, the boats and ships ac power supply system all adopts the isolated neutral IT system, and power supply grid all adopts the bank electric system of three-phase four-wire system to adopt neutral-point solid ground TN system in the electrical network of land, because the ground connection difference of electric power system, land power load and boats and ships power load is a shared bank electric system of while directly.The utility model provides a kind of land load and the shared a kind of distribution technique that supplies of load peculiar to vessel.Cooperate the parallel running of impedance circuit breaker and impedance; when having only the land power load; the direct ground connection of the neutral line; for providing the three-phase and four-line of neutral-point solid ground, the land power load adds the power supply of protective wire; when boats and ships pull in to shore electricity consumption; bank electric system neutral point and land power load are by impedance ground ground connection; the boats and ships power load is by the direct ground connection of protective earthing line; realize land power load and the shared bank electric system of boats and ships power load; at the utility model transformer neutral point in the compatible system of impedance earth; even the transformer generation single-phase earthing of bank electric system; the voltage to earth of the neutral point and the neutral line is subjected to the restriction of impedance ground near phase voltage, and earth current is less; protective relaying device conventional on the load peculiar to vessel can not trip, and satisfies the needs of boats and ships continuity power supply.Earthing breaker and the electric interlocking of load circuit breaker peculiar to vessel realize that the steady and continuous when land power load and boats and ships power load insert is used.
The utlity model has following advantage:
1), supply power mode is changed rapidly reliable operation.When not having boats and ships to pull in to shore to use the bank electric system, load breaker open operation peculiar to vessel, earthing breaker closes a floodgate, and the impedance ground short circuit, the transformer of bank electric system can provide the three-phase and four-line of neutral-point solid ground to add the power supply of protective wire for the stationary plant of port and pier; When boats and ships pull in to shore electricity consumption, load breaker closing peculiar to vessel, the earthing breaker separating brake, bank electric system neutral point is by impedance ground ground connection, the shared bank electric system of land power load and boats and ships power load.The setting of the utility model impedance ground; make when boats and ships power load load is arranged; if single-phase earthing does not take place in the bank electric system; impedance ground plays the effect that suppresses neutral point drifting; if bank electric system generation single-phase earthing; can limit the earth current of ground connection phase, avoid cutting off ship'ssupply because of the protective relaying device action.
2), salvo is comprehensive.At the utility model transformer neutral point in the compatible system of impedance earth; if the transformer generation single-phase earthing of bank electric system; the voltage to earth of the neutral point and the neutral line is near phase voltage; be subjected to the restriction of impedance ground; earth current is less; conventional protective relaying device can not trip, though satisfy the needs of boats and ships continuity power supply, there is the danger of maintenance electric shock in the land electric system.For this reason, need that electricity consumption meets special relaying protection system is set to boats and ships at this situation,, and guarantee the continuous power supply of non-grounded circuit so that when single-phase earthing takes place, can excise grounded circuit fast, reliably.The utility model is provided with insulation monitoring and warning device in the boats and ships power load, and insulation monitoring and warning device is sent to control unit to the current parameter of bank electric system different stage power distribution cabinet (case) by acquisition module, and the opposite bank electric system is monitored.When the transformer generation single-phase earthing of bank electric system; differentiate the approximate location of earth point according to the electric current situation of change; and start corresponding protective relaying device and report to the police; according to the artificial selectively excision bank electric system of reporting to the police; guaranteeing to guarantee the reliability of land electricity consumption to greatest extent under the electric reliable premise peculiar to vessel.
Description of drawings
Fig. 1 is the utility model system configuration schematic diagram.
Embodiment
The utility model both can be it when providing a kind of boats and ships to pull in to shore the three-phase three-wire system power supply was provided; the ship shore electric compatible type system schema that can provide three-phase and four-line to add the protective wire system to the land of port and pier electrical installation again; as shown in Figure 1; the utility model ship shore electric system comprises transformer B, is provided with impedance ground Z in parallel and earthing breaker QF between transformer B low-pressure side and the earth point 4, main breaker QF 1, land load circuit breaker Q F 2, load circuit breaker Q F peculiar to vessel 3, neutral line N, protective earthing line PE.Land power load and the parallel connection of boats and ships power load are by main breaker QF 1Be connected with step down side, wherein land power load and main breaker QF 1Between be provided with the land with load circuit breaker Q F 2, boats and ships power load and main breaker QF 1Between be provided with load circuit breaker Q F peculiar to vessel 3, described earthing breaker QF 4With load circuit breaker Q F peculiar to vessel 3Interlocking, earthing breaker QF 4Load circuit breaker Q F peculiar to vessel during combined floodgate 3Separating brake, load circuit breaker Q F peculiar to vessel 3Earthing breaker QF during combined floodgate 4Separating brake.The boats and ships power load is by the direct ground connection of protective earthing line PE; The land power load is a three-phase four-wire system, is connected earthing breaker QF in parallel with the neutral line by protective earthing line PE 4With impedance ground Z ground connection.The boats and ships power load is provided with insulation monitoring and warning device; Schneider Vigilohm insulation monitoring and warning device for example; insulation monitoring and warning device opposite bank electric system is monitored; when the transformer generation single-phase earthing of bank electric system; differentiate the approximate location of earth point according to the electric current situation of change; and start corresponding protective relaying device and report to the police, can artificially selectively cut off being connected of boats and ships power load and bank electric system according to reporting to the police.
The method of supplying power to of ship shore electric of the present utility model system, when main breaker closed a floodgate, the bank electric system was in power supply state, earthing breaker QF 4With the parallel running of impedance Z, when not having boats and ships to pull in to shore to use the bank electric system, earthing breaker QF 4Close a floodgate, then make impedance ground Z short circuit, the direct ground connection of neutral line N, the power supply that provides the three-phase and four-line of neutral-point solid ground to add protective wire for the land power load, when boats and ships pull in to shore electricity consumption, load circuit breaker Q F peculiar to vessel 3Close a floodgate QF 4Separating brake, bank electric system neutral point is by impedance ground Z ground connection, the shared bank electric system of land electricity consumption and electricity peculiar to vessel.The setting of impedance ground; make when boats and ships power load load is arranged; if single-phase earthing does not take place in the bank electric system; impedance ground plays the effect that suppresses neutral point drifting; if bank electric system generation single-phase earthing; can limit the earth current of ground connection phase, avoid cutting off ship'ssupply because of the protective relaying device action.
The shared bank electric system of the utility model land power load and boats and ships power load.Earthing breaker and the electric interlocking of load circuit breaker peculiar to vessel realize that the steady and continuous when land power load and boats and ships power load insert is used.
In concrete the enforcement, transformer B can select oil immersed type for use.
The ship shore electric system of the capacity that varies in size that the utility model enforcement obtains can be used in the occasion of various power supply capacities widely.

Claims (5)

1. ship shore electric system, comprise transformer, land power load and boats and ships power load, it is characterized in that step down side passes through earthing breaker and impedance ground ground connection in parallel, land power load and the parallel connection of boats and ships power load, be connected with step down side, wherein be provided with land load circuit breaker between land power load and the transformer, be provided with load circuit breaker peculiar to vessel between boats and ships power load and the transformer, described earthing breaker and load circuit breaker peculiar to vessel interlocking, earthing breaker separating brake when load breaker open operation peculiar to vessel when earthing breaker closes a floodgate, load breaker closing peculiar to vessel.
2. a kind of ship shore electric according to claim 1 system is characterized in that the boats and ships power load is by the direct ground connection of protective earthing line; The land power load is a three-phase four-wire system, is connected earthing breaker and impedance ground ground connection in parallel with the neutral line by the protective earthing line.
3. a kind of ship shore electric according to claim 1 and 2 system is characterized in that the boats and ships power load is provided with insulation monitoring and warning device.
4. a kind of ship shore electric according to claim 1 and 2 system is characterized in that the land also is provided with main breaker with between being connected of load circuit breaker and load circuit breaker peculiar to vessel and step down side.
5. a kind of ship shore electric according to claim 3 system is characterized in that the land also is provided with main breaker with between being connected of load circuit breaker and load circuit breaker peculiar to vessel and step down side.
CN2010202913897U 2010-08-11 2010-08-11 Shipping shore power system Expired - Lifetime CN201766362U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202913897U CN201766362U (en) 2010-08-11 2010-08-11 Shipping shore power system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202913897U CN201766362U (en) 2010-08-11 2010-08-11 Shipping shore power system

Publications (1)

Publication Number Publication Date
CN201766362U true CN201766362U (en) 2011-03-16

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CN2010202913897U Expired - Lifetime CN201766362U (en) 2010-08-11 2010-08-11 Shipping shore power system

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Country Link
CN (1) CN201766362U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101917004A (en) * 2010-08-11 2010-12-15 江苏镇安电力设备有限公司 Shore power supply system for ships and power supply method thereof
CN102332703A (en) * 2011-07-15 2012-01-25 国电南京自动化股份有限公司 Electric protection method for shore power system
CN102522710A (en) * 2011-11-30 2012-06-27 连云港星火岸电工程有限公司 Ship-borne transformer substation
CN102946060A (en) * 2012-09-27 2013-02-27 天津港电力有限公司 Shore power connection box
CN105322513A (en) * 2014-08-01 2016-02-10 施耐德电器工业公司 Safety system for the electrical connection of electrical equipment to a power supply apparatus, and electrical installation

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101917004A (en) * 2010-08-11 2010-12-15 江苏镇安电力设备有限公司 Shore power supply system for ships and power supply method thereof
CN101917004B (en) * 2010-08-11 2013-04-24 江苏镇安电力设备有限公司 Shore power supply system for ships and power supply method thereof
CN102332703A (en) * 2011-07-15 2012-01-25 国电南京自动化股份有限公司 Electric protection method for shore power system
CN102332703B (en) * 2011-07-15 2013-12-11 国电南京自动化股份有限公司 Electric protection method for shore power system
CN102522710A (en) * 2011-11-30 2012-06-27 连云港星火岸电工程有限公司 Ship-borne transformer substation
CN102522710B (en) * 2011-11-30 2013-07-17 江苏新航电气有限公司 Ship-borne transformer substation
CN102946060A (en) * 2012-09-27 2013-02-27 天津港电力有限公司 Shore power connection box
CN102946060B (en) * 2012-09-27 2016-09-28 天津港电力有限公司 Bank electricity power-on box
CN105322513A (en) * 2014-08-01 2016-02-10 施耐德电器工业公司 Safety system for the electrical connection of electrical equipment to a power supply apparatus, and electrical installation
CN105322513B (en) * 2014-08-01 2019-02-12 施耐德电器工业公司 Electrical equipment is electrically connected to the security system and electric device of electric power supply apparatus

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C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
C53 Correction of patent for invention or patent application
CB03 Change of inventor or designer information

Inventor after: Ye Xiaosong

Inventor after: Wang Jinquan

Inventor after: Wu Zhenfei

Inventor after: Ding Jianxing

Inventor after: Xing Ming

Inventor before: Ye Xiaosong

Inventor before: Wang Jinquan

Inventor before: Wu Zhenfei

Inventor before: Xing Ming

TR01 Transfer of patent right

Effective date of registration: 20130506

Address after: 212028 Zhenjiang Industrial Park, Dantu New District, Jiangsu No. five weft Road, No. 18

Patentee after: Jiangsu Zhen'an Power Equipments Co., Ltd.

Patentee after: Wang Jinquan

Patentee after: Ding Jianxing

Address before: 212028 Zhenjiang Industrial Park, Dantu New District, Jiangsu No. five weft Road, No. 18

Patentee before: Jiangsu Zhen'an Power Equipments Co., Ltd.

Patentee before: Wang Jinquan

COR Change of bibliographic data

Free format text: CORRECT: INVENTOR; FROM: YE XIAOSONG WANG JINQUAN WU ZHENFEI XING MING TO: YE XIAOSONG WANG JINQUAN WU ZHENFEI DING JIANXING XING MING

ASS Succession or assignment of patent right

Owner name: WANG JINQUAN DING JIANXING

Free format text: FORMER OWNER: WANG JINQUAN

Effective date: 20130506

C53 Correction of patent for invention or patent application
C41 Transfer of patent application or patent right or utility model
ASS Succession or assignment of patent right

Owner name: JIANGSU ZHEN'AN POWER EQUIPMENTS CO., LTD. WANG JI

Free format text: FORMER OWNER: WANG JINQUAN DING JIANXING

Effective date: 20141203

Owner name: CHINESE PEOPLE'S LIBERATION ARMY NAVAL ENGINEERING

Free format text: FORMER OWNER: JIANGSU ZHEN'AN POWER EQUIPMENTS CO., LTD.

Effective date: 20141203

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Free format text: CORRECT: ADDRESS; FROM: 212028 ZHENJIANG, JIANGSU PROVINCE TO: 100000 FENGTAI, BEIJING

Free format text: CORRECT: INVENTOR; FROM: YE XIAOSONG WANG JINQUAN WU ZHENFEI DING JIANXING XING MING TO: DING JIANXING YE XIAOSONG WANG JINQUAN WU ZHENFEI XING MING

TR01 Transfer of patent right

Effective date of registration: 20141203

Address after: 100000 general room, No. 6, Fengtai East Road, Beijing, Fengtai District

Patentee after: Chinese People's Liberation Army Naval Engineering Design Institute

Patentee after: Jiangsu Zhen'an Power Equipments Co., Ltd.

Patentee after: Wang Jinquan

Address before: 212028 Zhenjiang Industrial Park, Dantu New District, Jiangsu No. five weft Road, No. 18

Patentee before: Jiangsu Zhen'an Power Equipments Co., Ltd.

Patentee before: Wang Jinquan

Patentee before: Ding Jianxing

CB03 Change of inventor or designer information

Inventor after: Ding Jianxing

Inventor after: Ye Xiaosong

Inventor after: Wang Jinquan

Inventor after: Wu Zhenfei

Inventor after: Xing Ming

Inventor before: Ye Xiaosong

Inventor before: Wang Jinquan

Inventor before: Wu Zhenfei

Inventor before: Ding Jianxing

Inventor before: Xing Ming

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20110316