CN102332703B - Electric protection method for shore power system - Google Patents
Electric protection method for shore power system Download PDFInfo
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- CN102332703B CN102332703B CN2011101974322A CN201110197432A CN102332703B CN 102332703 B CN102332703 B CN 102332703B CN 2011101974322 A CN2011101974322 A CN 2011101974322A CN 201110197432 A CN201110197432 A CN 201110197432A CN 102332703 B CN102332703 B CN 102332703B
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Abstract
本发明公开了一种岸电系统的电气保护方法，包含以下步骤：（1）在岸电系统中，岸电控制电源正极端、负极端之间设置与船电系统连接并联动的保护电路；（2）在船电系统中，船电控制电源正极端、负极端之间设置与岸电系统连接并联动的保护电路；（3）岸电系统与船电系统通过插头和插座插接连通，构成闭合、联动的系统保护电路。本发明的方法可实现岸电系统和船电系统保护联动，达到岸电系统电气保护快速性的要求，保证岸电系统供电的高安全性和高可靠性，使靠岸船舶采用陆地电源为船舶供电，即增加对岸电系统的使用，达到节能、减排、降噪、提高经济效益的效果，具有广阔的应用前景。
The invention discloses an electrical protection method for a shore power system, which includes the following steps: (1) In the shore power system, a protection circuit connected and linked to the ship power system is provided between the positive terminal and the negative terminal of the shore power control power supply; (2) In the ship power system, a protective circuit connected and linked with the shore power system is set between the positive terminal and the negative terminal of the ship power control power supply; (3) The shore power system and the ship power system are connected through plugs and sockets, Constitute a closed, linkage system protection circuit. The method of the present invention can realize the protection linkage between the shore power system and the ship power system, meet the requirements of the rapidity of the electrical protection of the shore power system, ensure the high safety and high reliability of the power supply of the shore power system, and make the ships berthed to use land power as the ship power supply. Power supply, that is, increasing the use of the shore power system, achieves the effects of energy saving, emission reduction, noise reduction, and improvement of economic benefits, and has broad application prospects.
Description
Technical Field
The invention relates to an electrical element of a shore power system and a protection method of the system, and belongs to the technical field of electricity.
Background
With the increasing of the electrical automation degree of modern ships, the dependence of the ships on power supply is larger and larger, and a ship power system with high safety and high reliability becomes one of indispensable important systems of the modern ships, and can ensure that power supply with higher quality is provided for the ships under the working conditions of complex changes.
In order to ensure the safety and reliability of power supply when a common ship is in a port, fuel products (mostly heavy oil and diesel oil) are used for generating power to meet the power demand of the ship. Heavy oil and diesel oil produce a large amount of sulfides and nitrogen oxides in the combustion process, which pollute the surrounding environment. The noise generated by the diesel generating set used by the ship can also cause pollution to the environment. The shore-approaching ship adopts a land power supply to supply power to the ship, and the power supply system is called as a shore-approaching ship power supply system (shore power system for short). The shore power system can achieve the effects of saving energy, reducing emission, reducing noise and improving economic benefits.
Although the shore power system can achieve the effects of saving energy, reducing emission, reducing noise and improving economic benefits, the ship power system is a high-safety and high-reliability power system, if shore power is used for replacing ship power, the high safety and the high reliability of power supply of the shore power system must be guaranteed, and particularly the safety of ship power equipment and shore power system equipment is guaranteed under the sudden abnormal condition.
At present, a shore power system and a ship power system are connected only through connection of a power cable, when an emergency abnormal condition occurs, a shore power system protection device only protects shore power system equipment, and a ship power system protection device only protects ship power equipment. The mode does not fully consider the mutual influence of the shore power system and the ship power system, and the conditions of fault delay processing and fault range expansion are possibly caused when sudden abnormal conditions occur, so that the rapidity of electrical protection is influenced.
Disclosure of Invention
The invention aims to solve the problem that the existing shore power system and the ship power system are only connected by a power cable, and mutual influence between the shore power system and the ship power system is not fully considered, so that the rapidity of electrical protection is influenced, and provides an electrical protection method of the shore power system to meet the requirement of the rapidity of electrical protection of the shore power system.
The technical scheme adopted by the invention is as follows:
an electrical protection method of a shore power system is characterized by comprising the following steps:
(1) in the shore power system, a protection circuit connected and linked with the ship power system is arranged between the positive terminal and the negative terminal of the shore power control power supply;
(2) in the ship electric system, a protection circuit connected and linked with the shore electric system is arranged between the positive pole end and the negative pole end of a ship electric control power supply;
(3) the shore power system and the ship power system are connected through the plug and the socket in a plugging mode to form a closed and linked system protection circuit.
The protection circuit in the shore power system comprises two groups of linked shore power system protection tripping normally closed contacts, shore power system emergency control tripping normally closed contacts and shore power system emergency manual tripping normally closed contacts.
The protection circuit in the ship electrical system comprises two groups of ship electrical system protection tripping normally closed contacts, a ship electrical system emergency control tripping normally closed contact and a ship electrical system emergency manual tripping normally closed contact which are linked.
The closed series circuit formed between the positive end and the negative end of the shore power control power supply comprises a shore power system protection tripping normally closed contact, a shore power system emergency control tripping normally closed contact, a shore power system emergency manual tripping normally closed contact, a ship power system protection tripping normally closed contact, a ship power system emergency control tripping normally closed contact and a ship power system emergency manual tripping normally closed contact which are connected in series, and further comprises at least two pairs of plugs and sockets which are arranged in the series circuit.
The closed series circuit formed between the positive end and the negative end of the ship electric control power supply comprises a ship electric system protection tripping normally closed contact, a ship electric system emergency control tripping normally closed contact, a ship electric system emergency manual tripping normally closed contact, a shore electric system protection tripping normally closed contact, a shore electric system emergency control tripping normally closed contact and a shore electric system emergency manual tripping normally closed contact which are connected in series, and further comprises at least two pairs of plugs and sockets which are arranged in the series circuit.
The protection circuit in the shore power system further comprises a shore power system output breaker closing control loop, a shore power system output breaker decompression tripping control loop and a shore power system grounding breaker tripping control loop, and the shore power system output breaker closing control loop, the shore power system output breaker decompression tripping control loop and the shore power system grounding breaker tripping control loop are connected in parallel to form a shore power parallel circuit.
The shore power parallel circuit is connected in series in a closed series circuit formed between the positive end and the negative end of the shore power control power supply.
The protection circuit in the ship electrical system further comprises a ship electrical system input breaker closing control loop, a ship electrical system input breaker no-voltage tripping control loop and a ship electrical system grounding breaker tripping control loop, wherein the ship electrical system input breaker closing control loop, the ship electrical system input breaker no-voltage tripping control loop and the ship electrical system grounding breaker tripping control loop are connected in parallel to form a ship electrical parallel circuit.
The ship electricity parallel circuit is connected in series in a closed series circuit formed between the positive pole end and the negative pole end of the ship electricity control power supply.
At least three pairs of the plug and the socket are correspondingly arranged, and the plug and the socket can be shared in different protection circuits.
The technical scheme of the invention has the beneficial effects that:
the invention provides an electrical protection method of a shore power system, which integrates various land power grid electrical protection technologies and ship power grid electrical protection technologies, and meets the requirement of rapidity of electrical protection of the shore power system through circuit design connection. According to the invention, the mutual influence between the shore power system and the ship power system is fully considered, the traditional mode that the shore power system and the ship power system are connected only by virtue of a power cable is changed, and the shore power system and the ship power system are protected and linked by designing and connecting an electric protection device circuit; the electrical protection device circuit meets the requirement of electrical protection rapidity of the shore power system, ensures high safety and high reliability of power supply of the shore power system, can promote popularization and use of the shore power system, promotes energy conservation and emission reduction of ports, and has wide application prospect.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the application of the method of the present invention.
Wherein,
shore power system section 1
Shore power control power supply positive terminal V1+
Shore power control power supply negative electrode end V1-
Closing control loop 11 of shore power system output circuit breaker
Voltage-loss tripping control loop 12 of shore power system output circuit breaker
Shore power system grounding circuit breaker tripping control loop 13
Protection tripping normally closed contact KA1 of shore power system
Normally closed contact KA2 for emergency control trip of shore power system
Emergency manual tripping normally-closed contact KA3 of shore power system
First socket XS1
Second socket XS2
Third socket XS3
Marine electrical system part 2
Ship electric control power supply positive terminal V2+
Negative pole end V2 of ship power control power supply
Ship electric system input circuit breaker closing control loop 21
Ship electric system input breaker no-voltage tripping control loop 22
Ship electric system ground circuit breaker trip control loop 23
Normally closed contact KB1 for protection trip of ship electric system
Normally closed contact KB2 for emergency control tripping of ship electric system
Normally closed contact KB3 for emergency manual tripping of ship electric system
First plug XP1
Second plug XP2
A third plug XP 3.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, the electrical protection device for establishing a shore power system according to the electrical protection method of the present invention mainly includes a shore power system 1 and a ship power system 2, the shore power system 1 and the ship power system 2 can be formed by 3 sets of plugs and sockets which are inserted into each other to form a circuit which is communicated and linked, and when a ship needs to adopt a land power supply to supply power to the ship when the ship is in shore, the electrical protection device for establishing the shore power system of the present invention can be started only by inserting 3 plugs included in the ship power system 2 into 3 sockets included in the shore power system 1.
The protection circuit in the shore power system 1 comprises a shore power system output breaker closing control loop 11, a shore power system output breaker no-voltage tripping control loop 12, a shore power system grounding breaker tripping control loop 13, a shore power system protection tripping normally closed contact KA1, a shore power system emergency control tripping normally closed contact KA2 and a shore power system emergency manual tripping normally closed contact KA3, and the shore power system 1 further comprises 3 sockets which are respectively a first socket XS1, a second socket XS2 and a third socket XS 3.
The protection circuit in the ship electrical system 2 comprises a ship electrical system input breaker closing control loop 21, a ship electrical system input breaker no-voltage tripping control loop 22, a ship electrical system grounding breaker tripping control loop 23, a ship electrical system protection tripping normally closed contact KB1, a ship electrical system emergency control tripping normally closed contact KB2 and a ship electrical system emergency manual tripping normally closed contact KB3, and the ship electrical system 2 further comprises 3 plugs which are respectively a first plug XP1, a second plug XP2 and a third plug XP 3.
In another embodiment, the socket may be provided in the ship power system, and the plug corresponding to the socket may be provided in the shore power system.
The shore power system protection tripping normally closed contact KA1, the shore power system emergency control tripping normally closed contact KA2, the shore power system emergency manual tripping normally closed contact KA3, the ship power system protection tripping normally closed contact KB1, the ship power system emergency control tripping normally closed contact KB2 and the ship power system emergency manual tripping normally closed contact KB3 respectively comprise two groups of linked normally closed contacts. The first shore power system emergency control tripping normally closed contact KA2-1, the first shore power system emergency manual tripping normally closed contact KA3-1 are connected in series to form a first shore power series circuit; the second group of shore power system protection tripping normally closed contacts KA1-2, the second group of shore power system emergency control tripping normally closed contacts KA2-2 and the second group of shore power system emergency manual tripping normally closed contacts KA3-2 are connected in series to form a second shore power series circuit. The first group of ship electrical system protection tripping normally closed contacts KB1-1, the first group of ship electrical system emergency control tripping normally closed contacts KB2-1 and the first group of ship electrical system emergency manual tripping normally closed contacts KB3-1 are connected in series to form a first ship electrical series circuit; the second group of ship electric system protection tripping normally closed contacts KB1-2, the second group of ship electric system emergency control tripping normally closed contacts KB2-2 and the second group of ship electric system emergency manual tripping normally closed contacts KB3-2 are connected in series to form a second ship electric series circuit.
The positive ends of a shore power system output breaker closing control loop 11, a shore power system output breaker voltage-loss tripping control loop 12 and a shore power system grounding breaker tripping control loop 13 are connected together to be connected with a positive end V1+ of a shore power control power supply, the negative ends of the shore power system output breaker closing control loop 11, the shore power system output breaker voltage-loss tripping control loop 12 and the shore power system grounding breaker tripping control loop 13 are connected together to be connected with the positive end of a first group of shore power system protection tripping normally closed contacts KA1-1, the negative end of the first group of shore power system protection tripping normally closed contacts KA1-1 is connected with the positive end of a first group of shore power system emergency control tripping normally closed contacts KA2-1, the negative end of the first group of shore power system emergency control tripping normally closed contacts KA2-1 is connected with the positive end of a first group of shore power system emergency manual tripping normally closed contacts KA3-1, the negative electrode of the first group of shore power system emergency manual tripping normally closed contacts KA3-1 is connected with a first socket XS 1. The first socket XS1 can be plugged with a first plug XP1, the first plug XP1 is connected with the positive end of a second group of ship electrical system protection tripping normally closed contacts KB1-2, the negative end of a second group of ship electrical system protection tripping normally closed contacts KB1-2 is connected with the positive end of a second group of ship electrical system emergency control tripping normally closed contacts KB2-2, the negative end of a second group of ship electrical system emergency control tripping normally closed contacts KB2-2 is connected with the positive end of a second group of ship electrical system emergency manual tripping normally closed contacts KB3-2, the negative end of a second group of ship electrical system emergency manual tripping normally closed contacts KB3-2 is connected with a second plug XP2, the second plug XP2 can be plugged into a second socket XS2, and the second socket XS2 is connected with a shore electrical control power supply negative end V1.
No matter the first group of shore power system protection tripping normally closed contacts KA1-1, the first group of shore power system emergency control tripping normally closed contacts KA2-1 and the first group of shore power system emergency manual tripping normally closed contacts KA3-1 in the shore power system 1, or the second group of ship power system protection tripping normally closed contacts KB1-2, the second group of ship power system emergency control tripping normally closed contacts KB2-2 and the second group of ship power system emergency manual tripping normally closed contacts KB3-2 in the ship power system 2, as long as one of the normally closed contacts acts, the control power supplies of the shore power system 1 and the ship power system 2 are simultaneously disconnected in a linkage mode, and the shore power system and the ship power system are protected and linked.
The ship electrical system input breaker closing control circuit 21, the ship electrical system input breaker no-voltage tripping control circuit 22 and the ship electrical system grounding breaker tripping control circuit 23 are connected together at the positive terminal thereof to be connected with the positive terminal V2+ of the ship electrical control power supply, the ship electrical system input breaker closing control circuit 21, the ship electrical system input breaker no-voltage tripping control circuit 22 and the ship electrical system grounding breaker tripping control circuit 23 are connected together at the negative terminal thereof to be connected with the positive terminal of a first group of ship electrical system protection tripping normally closed contacts KB1-1, the first group of ship electrical system protection normally closed tripping contacts KB1-1 is connected with the positive terminal of a first group of ship electrical system emergency control tripping normally closed contacts KB2-1, the first group of ship electrical system emergency control tripping contacts KB2-1 is connected with the negative terminal of a first group of ship electrical system emergency manual tripping normally closed contacts KB3-1, the negative electrode of a first group of marine power system emergency manual tripping normally-closed contacts KB3-1 is connected with a third plug XP3, the third plug XP3 can be connected with a third socket XS3 in a plugging mode, the third socket XS3 is connected with the positive electrode end of a second group of shore power system protection tripping normally-closed contacts KA1-2, the negative electrode of the second group of shore power system protection tripping normally-closed contacts KA1-2 is connected with the positive electrode end of a second group of shore power system emergency control tripping normally-closed contacts KA2-2, the negative electrode of the second group of shore power system emergency control tripping normally-closed contacts KA2-2 is connected with the positive electrode end of a second group of shore power system emergency manual tripping normally-closed contacts KA3-2, the negative electrode of the second group of shore power system emergency manual tripping normally-closed contacts KA3-2 is connected with a second socket XS2 in a plugging mode, a second plug 2 can be connected with the second socket XS 2.
No matter the first group of ship power system protection tripping normally closed contacts KB1-1, the first group of ship power system emergency control tripping normally closed contacts KB2-1 and the first group of ship power system emergency manual tripping normally closed contacts KB3-1 in the ship power system 2, or the second group of shore power system protection tripping normally closed contacts KA1-2, the second group of shore power system emergency control tripping normally closed contacts KA2-2 and the second group of shore power system emergency manual tripping normally closed contacts KA3-2 in the shore power system 1, as long as one of the normally closed contacts acts, the control power supplies of the shore power system 1 and the ship power system 2 are simultaneously disconnected in a linkage mode, and the shore power system and the ship power system are protected and linked.
In conclusion, the shore power system and the ship power system are connected through circuit design, protection linkage of the shore power system and the ship power system is achieved, the requirement of rapidity of electrical protection of the shore power system is met, and high safety and high reliability of power supply of the shore power system are guaranteed.
By adopting the method, the problem that the electrical protection rapidity is influenced due to the fact that the shore power system and the ship power system are not fully considered because the existing shore power system and the ship power system are only connected by the power cable can be solved, and the using requirement of the shore power system is met. The invention can promote the popularization and the application of the shore power system, promote the energy conservation and emission reduction work of the port and has very wide application prospect.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and decorations made on the above embodiment according to the technical spirit of the present invention still fall within the technical scope of the present invention.
Claims (9)
1. An electrical protection method of a shore power system is characterized by comprising the following steps:
(1) in the shore power system, a protection circuit connected and linked with the ship power system is arranged between the positive terminal and the negative terminal of the shore power control power supply;
(2) in the ship electric system, a protection circuit connected and linked with the shore electric system is arranged between the positive pole end and the negative pole end of a ship electric control power supply;
(3) the shore power system and the ship power system are connected through a plug and a socket in a plugging mode to form a closed and linked system protection circuit;
the protection circuit in the shore power system comprises two groups of linked shore power system protection tripping normally closed contacts, shore power system emergency control tripping normally closed contacts and shore power system emergency manual tripping normally closed contacts.
2. The electrical protection method for the shore power system as claimed in claim 1, wherein the protection circuit in the marine power system comprises two sets of the linked marine power system protection trip normally closed contact, the marine power system emergency control trip normally closed contact and the marine power system emergency manual trip normally closed contact.
3. The electrical protection method for the shore power system according to claim 2, wherein the closed series circuit formed between the positive terminal and the negative terminal of the shore power control power supply comprises a shore power system protection trip normally closed contact, a shore power system emergency control trip normally closed contact, a shore power system emergency manual trip normally closed contact, a ship power system protection trip normally closed contact, a ship power system emergency control trip normally closed contact, a ship power system emergency manual trip normally closed contact, and at least two pairs of plugs and sockets arranged in the closed series circuit.
4. The electrical protection method for the shore power system according to claim 2, wherein the closed series circuit formed between the positive terminal and the negative terminal of the ship power control power supply comprises a ship power system protection trip normally closed contact, a ship power system emergency control trip normally closed contact, a ship power system emergency manual trip normally closed contact, a shore power system protection trip normally closed contact, a shore power system emergency control trip normally closed contact, a shore power system emergency manual trip normally closed contact, and at least two pairs of plugs and sockets arranged in the closed series circuit.
5. The electrical protection method of the shore power system as claimed in claim 3, wherein the protection circuit in the shore power system further comprises a shore power system output circuit breaker closing control circuit, a shore power system output circuit breaker voltage loss tripping control circuit, and a shore power system ground circuit breaker tripping control circuit, and the shore power system output circuit breaker closing control circuit, the shore power system output circuit breaker voltage loss tripping control circuit, and the shore power system ground circuit breaker tripping control circuit are connected in parallel to form a shore power parallel circuit.
6. The electrical protection method for the shore power system, according to claim 5, wherein said shore power parallel circuit is connected in series in a closed series circuit formed between the positive terminal and the negative terminal of said shore power control power source.
7. The electrical protection method of the shore power system as claimed in claim 4, wherein the protection circuit in the marine power system further comprises a ship power system input breaker closing control loop, a ship power system input breaker voltage loss tripping control loop and a ship power system grounding breaker tripping control loop, and the ship power system input breaker closing control loop, the ship power system input breaker voltage loss tripping control loop and the ship power system grounding breaker tripping control loop are connected in parallel to form a ship power parallel circuit.
8. The electrical protection method for the shore power system, according to claim 7, wherein said ship electrical parallel circuit is connected in series in a closed series circuit formed between the positive terminal and the negative terminal of said ship electrical control power source.
9. The electrical protection method for the shore power system as claimed in claim 1, wherein at least three pairs of said plug and said socket are provided for said system protection circuit, and said plug and said socket are shared by different protection circuits.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101974322A CN102332703B (en) | 2011-07-15 | 2011-07-15 | Electric protection method for shore power system |
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| CN2011101974322A CN102332703B (en) | 2011-07-15 | 2011-07-15 | Electric protection method for shore power system |
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| CN102332703B true CN102332703B (en) | 2013-12-11 |
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| CN108448531B (en) * | 2018-05-02 | 2024-04-09 | 江苏省镇江船厂（集团）有限公司 | Safety protection device for pontoon three-phase four-wire system power distribution system |
| CN109309378B (en) * | 2018-11-28 | 2024-02-13 | 温州正泰船岸电气有限公司 | Anti-electrification disconnecting device |
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| US7408273B2 (en) * | 2004-10-12 | 2008-08-05 | Slocum Kim M | Shore power access system |
| CN201766362U (en) * | 2010-08-11 | 2011-03-16 | 江苏镇安电力设备有限公司 | Shipping shore power system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2010120952A2 (en) * | 2009-04-14 | 2010-10-21 | Cochran, Inc. | Automated shore power system |
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| CN2609260Y (en) * | 2003-03-19 | 2004-03-31 | 朱明� | Shore-ship power transmission device |
| US7408273B2 (en) * | 2004-10-12 | 2008-08-05 | Slocum Kim M | Shore power access system |
| CN201766362U (en) * | 2010-08-11 | 2011-03-16 | 江苏镇安电力设备有限公司 | Shipping shore power system |
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