CN211859156U - Floating dock distribution board suitable for 3-phase 4-wire grounding system - Google Patents

Floating dock distribution board suitable for 3-phase 4-wire grounding system Download PDF

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Publication number
CN211859156U
CN211859156U CN201922197848.9U CN201922197848U CN211859156U CN 211859156 U CN211859156 U CN 211859156U CN 201922197848 U CN201922197848 U CN 201922197848U CN 211859156 U CN211859156 U CN 211859156U
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generator
load
phase
bus bar
switch
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CN201922197848.9U
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刘志勇
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Zhenjiang Saiernico Automation Co ltd
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Zhenjiang Saiernico Automation Co ltd
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Abstract

The utility model is suitable for a3 looks 4 line ground connection system's floating dock switch board, compare with conventional IT insulation system to ground, N looks busbar has been increased, N looks busbar is connected and is realized system's ground connection with the PE row of ground connection a bit in the low pressure switch board, set up the protection to generator and various types of consumer, and the accessible is simple and convenient to be operated and is carried out insulation detection to the system, guarantee the steady operation and the personal safety of boats and ships equipment, satisfy the operation requirement of boats and ships power supply continuity and security, can satisfy the power supply continuity of boats and ships three-phase four-wire system neutral point ground connection power supply system, equipment protection, operation requirements such as human protection, moreover, the steam generator is simple in structure, and convenient for operation, and is stable and reliable.

Description

Floating dock distribution board suitable for 3-phase 4-wire grounding system
Technical Field
The utility model relates to a be applicable to 3 looks 4 line ground connection system's floating dock switch board in boats and ships power station equipment technique of distribution system.
Background
In the conventional technology, a three-phase three-wire system neutral point ungrounded power supply system is generally adopted for ship equipment manufactured in a shipyard, but in special ship equipment such as a floating dock, a three-phase four-wire system neutral point grounded power supply system is also used, the three-phase four-wire system neutral point grounded power supply system is different from the three-phase three-wire system neutral point ungrounded power supply system in nature, requirements on equipment protection, grounding system design, power supply continuity, electric fire protection, human body protection and the like are different, a distribution board which can be directly applied to the three-phase four-wire system neutral point grounded power supply system of the ship equipment is not provided in the prior art, a unified design standard is not provided, the design is basically carried out by comparing a land distribution board standard, the use requirement of the ship equipment cannot be met, and the stability and the reliability of the ship power supply system are influenced.
Disclosure of Invention
The utility model aims to solve the technical problem that a can satisfy operation requirements such as boats and ships three-phase four-wire system neutral point grounding power supply system power supply continuity, equipment protection, human protection, simple structure, convenient operation, reliable and stable is applicable to 3 looks 4 line ground connection system's floating dock switch board.
The utility model is suitable for a3 4 line ground system's of looks 4 floating dock switch boards, its characterized in that: the three generator inlet screens, the one bus-bar connection screen and the two load screens are mutually communicated through a main bus bar and a PE bus bar, the main bus bar comprises R, S, T, N four-phase main bus bars arranged along the horizontal direction, and the N-phase main bus bars are connected to the PE bus bar; the three generator inlet screens are respectively provided with an inlet circuit breaker and a zero line disconnecting switch, each generator inlet screen is respectively provided with a R, S, T generator branch busbar connected to R, S, T main busbar and an N-phase generator branch busbar connected to N-phase main busbar, R, S, T generator branch busbar is connected to a generator through a generator inlet circuit breaker, the N-phase generator branch busbar is connected to the generator through the zero line disconnecting switch, and an interlocking mechanism is arranged between the zero line disconnecting switch and the generator inlet circuit breaker; r, S, T the main bus bar is connected to the load switches in the two load panels through R, S, T load branch bus bars respectively, and the N-phase main bus bar is also connected to the load switches in the two load panels through the N-phase load branch bus bars respectively; a main bus bar connecting switch connected in series on the R, S, T main bus bar is arranged in the bus bar screen;
a R, S, T generator branch busbar of each generator inlet panel is respectively provided with a generator current sampling current transformer, each generator inlet panel is respectively provided with a generator power supply ammeter V, a generator power factor meter PF, a generator operation hour meter HR, a generator active power meter KW, a generator and busbar voltmeter V, a generator and busbar frequency meter F, a generator parallel operation and protection module PPU, an ammeter change-over switch AS1, a voltage frequency meter change-over switch, a generator closing sh21 and separating brake with lamp button sh22, a generator starting button s23 and stopping button s24, a generator standby vehicle indicator lamp h8 and operation indicator lamp h7, and a generator space heater selection switch sk 2;
the bus-bar screen is provided with a double voltmeter V/V, a double frequency meter F/F, a synchronous meter SYN, a synchronous indicator lamp SYN-L, a touch screen HMI, a buzzer BZ, a manual synchronous selection switch SW1 and a power station management mode selection switch SW 2;
the two load screens are respectively a 440V load screen and a 220V load screen, the 440V load screen is used for feeding 440V and 220V power supplies, providing power supplies for ship pump and fan loads and providing overload and short-circuit protection; the 220V load screen is used for feeding a 220V power supply, providing a power supply for ship lighting and communication navigation loads, and providing overload and short-circuit protection;
the 440V load screen is provided with a3 phi 440V load feed switch QF11, a 440V power distribution box load feed switch QF12, a R, S, T main bus bar is respectively connected to the 3 phi 440V load feed switch QF11 and the 440V power distribution box load feed switch QF12 through a R, S, T vertical bus bar, and an N-phase main bus bar is connected to the 440V power distribution box load feed switch QF12 through an N-phase vertical bus bar;
the 220V load screen is provided with three single-phase terminal load feed switches QF21/QF22/QF23, a 220V lighting distribution box load QF24, shore power switches QF25 and R, S, T main bus bars are connected to the three single-phase terminal load feed switches QF21/QF22/QF23, the 220V lighting distribution box load QF24 and the shore power switch QF25 through R, S, T three-phase bus bars, and the N-phase main bus bar is also connected to the three single-phase terminal load feed switches QF21/QF22/QF23, the 220V lighting distribution box load QF24 and the shore power switch QF25 through an N-phase vertical bus bar; the 220V load screen is also provided with a 220V ammeter A2, an ammeter change-over switch AS2,220V current transformer CT2, a shore power ammeter A3, an ammeter change-over switch AS3, a shore power voltmeter V3, a voltmeter change-over switch VS3, a shore power supply current transformer CT5, a shore power supply effective indicator light h11 and a shore power supply indicator light h 12;
the grounding point of the PE bus bar is arranged in the 440V load screen, and the N-phase main bus bar is connected to the PE bus bar in the 440V load screen through the N-phase vertical bus bar.
The utility model is suitable for a3 looks 4 line ground connection system's floating dock switch board, compare with conventional IT insulation system to ground, N looks busbar has been increased, N looks busbar is connected and is realized system's ground connection with the PE row of ground connection a bit in the low pressure switch board, set up the protection to generator and various types of consumer, and the accessible is simple and convenient to be operated and is carried out insulation detection to the system, guarantee the steady operation and the personal safety of boats and ships equipment, satisfy the operation requirement of boats and ships power supply continuity and security, can satisfy the power supply continuity of boats and ships three-phase four-wire system neutral point ground connection power supply system, equipment protection, operation requirements such as human protection, moreover, the steam generator is simple in structure, and convenient for operation, and is stable and reliable.
Drawings
Fig. 1 is a single line diagram of a floating dock distribution board suitable for a 3-phase 4-wire grounding system according to an embodiment of the present invention.
Detailed Description
As shown in the figure, the floating dock distribution board suitable for the 3-phase 4-wire grounding system is provided with a 1 # generator incoming screen, a2 # generator incoming screen and a3 # generator incoming screen, and further comprises a bus coupler screen, a 440V load screen and a 220V load screen. The three generator inlet screens, the bus-bar screen and the two load screens are mutually communicated through a main bus bar and a PE bus bar, the main bus bar comprises R, S, T, N four-phase main bus bars arranged along the horizontal direction, and the N-phase main bus bar is connected to the PE bus bar;
the three generator inlet screens are respectively provided with an inlet circuit breaker and a zero line disconnecting switch, each generator inlet screen is respectively provided with a R, S, T generator branch busbar connected to R, S, T main busbar and an N-phase generator branch busbar connected to N-phase main busbar, R, S, T generator branch busbar is connected to a generator through a generator inlet circuit breaker, the N-phase generator branch busbar is connected to the generator through the zero line disconnecting switch, and an interlocking mechanism is arranged between the zero line disconnecting switch and the generator inlet circuit breaker; r, S, T the main bus bar is connected to the load switches in the two load panels through R, S, T load branch bus bars respectively, and the N-phase main bus bar is also connected to the load switches in the two load panels through the N-phase load branch bus bars respectively; a main bus bar connecting switch connected in series with the R, S, T main bus bar is arranged in the bus bar screen.
The utility model is suitable for a3 looks 4 line ground connection system's floating dock switch board, compare with conventional IT insulation system to ground, N looks busbar has been increased, N looks busbar is connected and is realized system's ground connection with the PE row of ground connection a bit in the low pressure switch board, set up the protection to generator and various types of consumer, and the accessible is simple and convenient to be operated and is carried out insulation detection to the system, guarantee the steady operation and the personal safety of boats and ships equipment, satisfy the operation requirement of boats and ships power supply continuity and security, can satisfy the power supply continuity of boats and ships three-phase four-wire system neutral point ground connection power supply system, equipment protection, operation requirements such as human protection, moreover, the steam generator is simple in structure, and convenient for operation, and is stable and reliable.
In particular, the amount of the solvent to be used,
the utility model relates to a boats and ships distribution system especially relates to a3 floating dock switch board scheme design of 4 line ground connection systems mutually, belongs to boats and ships power station equipment technical field.
An object of the utility model is to provide a3 looks 4 line system neutral point ground connection floating dock switch board design, satisfy requirements such as power supply system's power supply continuity, equipment protection, human protection.
The utility model discloses will realize through following technical scheme:
the design scheme of the 3-phase 4-wire neutral point grounding floating dock distribution board comprises a No. 1-3 generator inlet screen, a bus coupler screen, a 440V load screen and a 220V load screen. The three generator screens are responsible for connecting a ship auxiliary generator, providing a ship power distribution power supply, long delay protection, short delay protection and instantaneous tripping protection of the generator, and monitoring the power supply of the generator; the bus-bar screen is provided with a main bus bar connection switch for switching a fault main bus bar, increasing the redundancy of system power supply, and a power station management system is arranged for monitoring and managing a distribution board power grid system; the 440V load screen is used for feeding 440V and 220V power supplies, providing power supplies for loads such as pumps and fans for ships, and providing overload and short-circuit protection; the 220V load screen is used for feeding 220V power supply, providing power supply for loads such as ship lighting, communication navigation and the like, and providing overload and short-circuit protection.
1. No. 1 ~ No. 3 generator inlet wire screen contains: the system comprises a generator R, S, T, N phase busbar, a generator incoming line breaker QF1/QF2/QF3, a generator zero line isolating switch QF1-N/QF2-N/QF3-N, a generator current sampling current transformer CT1/CT2/CT3, a generator power supply ammeter V, a generator power factor meter PF, a generator operation hour meter HR, a generator active power meter KW, a generator and busbar voltmeter V, a generator and busbar frequency meter F, a generator parallel operation and protection module PPU, an ammeter conversion switch AS1, a voltage frequency meter conversion switch, a generator sh closing 21 and separating brake strip lamp button sh22, a generator starting button s23 and stopping button s24, a generator standby indicator lamp h8 and operation indicator lamp h7, and a generator space heater selection switch sk 2. Through this generator screen, can be so that generator power supply safety supplies power to the panel main bus bar. The generator N phase isolating switch QF-N and the generator protection switch QF are interlocked to ensure the system safety, and the R, S and T three-phase bus bars can be grounded and disconnected through the separating brake isolating switch, the generator protection switch and the load switch, so that the distribution board is subjected to regular insulation detection, the safe operation of the system is ensured, and the faults are reduced. The generator parallel operation and the protection device PPU can provide comprehensive protection for the generator and prevent system abnormity.
2. The bus-linked screen comprises: the three-phase main bus bar of R, S and T is connected with a switch 1QS, a double voltmeter V/V, a double frequency meter F/F, a synchronous meter SYN, a synchronous indicator lamp SYN-L, a touch screen HMI, a buzzer BZ, a manual synchronous selection switch SW1 and a power station management mode selection switch SW 2. The interconnection switch 1QS can break the fault bus bar, thereby improving the redundancy of the power supply system of the distribution panel and preventing the power loss of the whole ship. The bus-bar screen is provided with a synchronous meter, manual parallel operation of the generators can be performed, a PMS management system is arranged, and automatic management of a power grid can be achieved.
3. 440V load screen: r, S, T, N phase bus, panel bus ground point, 3 Φ 440V load feed switch QF11,440V power distribution box load feed switch QF 12. The switch QF11 can supply power for 3 phi 440V load, such as cabin fan, sea water pump and other power loads, and provide short circuit and overload protection. The load of QF12 adopts 4-core cables, wherein R, S, T three-phase cables are connected to R, S, T main bus bar through QF12 switch, N phase cable is directly connected to N phase bus bar of distribution board, can provide power for 440V/220V power distribution box, and provide overload and short-circuit protection, guarantee the safe operation of subordinate' S equipment. And the N-phase bus bar in the distribution board is connected with the grounded PE bar to realize system grounding.
4. 220V load screen: r, S, T, N phase bus bar, 220V ammeter A2, ammeter change-over switch AS2,220V current transformer CT2, single-phase terminal load feed switch QF21/QF22/QF23,220V lighting distribution box load QF24, shore power supply switch QF25, shore power ammeter A3 and ammeter change-over switch AS3, shore power voltmeter V3 and voltmeter change-over switch VS3, shore power supply current transformer CT5, shore power supply effective indicator light h11 and shore power supply indicator light h 12. The switch QF21/QF22/QF23 is a 2-pole switch, and is sequentially connected with R, S and T three-phase busbars to ensure three-phase current balance. The load of QF24 adopts 4 core cables, wherein R, S, T three-phase cables are connected to R, S, T main busbar through the switch, N looks cable direct connection is to the N looks busbar of panel, can provide the power for 220V electric power distribution box to provide overload and short-circuit protection, guarantee the safe operation of subordinate' S equipment. The shore power supply provides clean energy for boats and ships to interlock with the marine generator, shore power switch is 3 utmost point switches, connects the R of shore power cable, S, T three-phase cable, and installs current transformer for the test shore power current, shore power N looks cable lug connection to N looks busbar.
Compared with a conventional IT ground insulation system, the scheme has the advantages that the distribution board is additionally provided with the N-phase bus bar, one point in the low-voltage distribution board is connected with the grounding PE bar to realize system grounding, the protection is set for the generator and various types of electric equipment, the system can be subjected to insulation detection through simple and convenient operation, the stable operation and the personal safety of ship equipment are guaranteed, and the use requirements of the ship power supply continuity and the safety are met.
In addition to the above embodiments, the present invention can also have other embodiments, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
The three generator inlet screens are respectively provided with an inlet circuit breaker and a zero line disconnecting switch, each generator inlet screen is respectively provided with a R, S, T generator branch busbar connected to R, S, T main busbar and an N-phase generator branch busbar connected to N-phase main busbar, R, S, T generator branch busbar is connected to a generator through a generator inlet circuit breaker, the N-phase generator branch busbar is connected to the generator through the zero line disconnecting switch, and an interlocking mechanism is arranged between the zero line disconnecting switch and the generator inlet circuit breaker; r, S, T the main bus bar is connected to the load switches in the two load panels through R, S, T load branch bus bars respectively, and the N-phase main bus bar is also connected to the load switches in the two load panels through the N-phase load branch bus bars respectively; a main bus bar connecting switch connected in series on the R, S, T main bus bar is arranged in the bus bar screen;
a R, S, T generator branch busbar of each generator inlet panel is respectively provided with a generator current sampling current transformer, each generator inlet panel is respectively provided with a generator power supply ammeter V, a generator power factor meter PF, a generator operation hour meter HR, a generator active power meter KW, a generator and busbar voltmeter V, a generator and busbar frequency meter F, a generator parallel operation and protection module PPU, an ammeter change-over switch AS1, a voltage frequency meter change-over switch, a generator closing sh21 and separating brake with lamp button sh22, a generator starting button s23 and stopping button s24, a generator standby vehicle indicator lamp h8 and operation indicator lamp h7, and a generator space heater selection switch sk 2;
the bus-bar screen is provided with a double voltmeter V/V, a double frequency meter F/F, a synchronous meter SYN, a synchronous indicator lamp SYN-L, a touch screen HMI, a buzzer BZ, a manual synchronous selection switch SW1 and a power station management mode selection switch SW 2;
the two load screens are respectively a 440V load screen and a 220V load screen, the 440V load screen is used for feeding 440V and 220V power supplies, providing power supplies for loads such as pumps, fans and the like for ships, and providing overload and short-circuit protection; the 440V load panel is provided with a3 phi 440V load feed switch QF11, a 440V power distribution box load feed switch QF12, a R, S, T main bus bar is respectively connected to a3 phi 440V load feed switch QF11 and a 40V power distribution box load feed switch QF12 through a R, S, T vertical bus bar, and an N-phase main bus bar is connected to a 440V power distribution box load feed switch QF12 through an N-phase vertical bus bar;
the 0V load screen is provided with three single-phase terminal load feed switches QF21/QF22/QF23, a 220V lighting distribution box load QF24, shore power switches QF25 and R, S, T main busbars are connected to the three single-phase terminal load feed switches QF21/QF22/QF23, the 220V lighting distribution box load QF24 and the shore power switch QF25 through R, S, T three-phase busbars, and the N-phase main busbars are also connected to the three single-phase terminal load feed switches QF21/QF22/QF23, the 220V lighting distribution box load QF24 and the shore power switch QF25 through N-phase vertical busbars; the 220V load screen is also provided with a 220V ammeter A2, an ammeter change-over switch AS2,220V current transformer CT2, a shore power ammeter A3, an ammeter change-over switch AS3, a shore power voltmeter V3, a voltmeter change-over switch VS3, a shore power supply current transformer CT5, a shore power supply effective indicator light h11 and a shore power supply indicator light h 12;
the grounding point of the PE bus bar is arranged in the 440V load screen, and the N-phase main bus bar is connected to the PE bus bar in the 440V load screen through the N-phase vertical bus bar.

Claims (6)

1. A floating dock panelboard for use with a 3-phase 4-wire grounding system, comprising: the three generator inlet screens, the one bus-bar connection screen and the two load screens are mutually communicated through a main bus bar and a PE bus bar, the main bus bar comprises R, S, T, N four-phase main bus bars arranged along the horizontal direction, and the N-phase main bus bars are connected to the PE bus bar; the three generator inlet screens are respectively provided with an inlet circuit breaker and a zero line disconnecting switch, each generator inlet screen is respectively provided with a R, S, T generator branch busbar connected to R, S, T main busbar and an N-phase generator branch busbar connected to N-phase main busbar, R, S, T generator branch busbar is connected to a generator through a generator inlet circuit breaker, the N-phase generator branch busbar is connected to the generator through the zero line disconnecting switch, and an interlocking mechanism is arranged between the zero line disconnecting switch and the generator inlet circuit breaker; r, S, T the main bus bar is connected to the load switches in the two load panels through R, S, T load branch bus bars respectively, and the N-phase main bus bar is also connected to the load switches in the two load panels through the N-phase load branch bus bars respectively; a main bus bar connecting switch connected in series with the R, S, T main bus bar is arranged in the bus bar screen.
2. A floating dock panelboard for use with a 3-phase 4-wire grounding system according to claim 1 wherein: the power generator system is characterized in that a generator current sampling current transformer is respectively arranged on R, S, T generator branch busbars of each generator inlet panel, a generator power supply ammeter V is respectively arranged on each generator inlet panel, a generator power factor meter PF, a generator operation hour meter HR, a generator active power meter KW, a generator and busbar voltmeter V, a generator and busbar frequency meter F, a generator parallel operation and protection module PPU, an ammeter change-over switch AS1, a voltage frequency meter change-over switch, a generator closing sh21 and a brake separating lamp button sh22, a generator starting button s23 and a stopping button s24, a generator standby vehicle indicator lamp h8 and an operation indicator lamp h7, and a generator space heater selection switch sk 2.
3. A floating dock panelboard for use with a 3-phase 4-wire grounding system according to claim 2 wherein: the bus-bar screen is provided with a double voltmeter V/V, a double frequency meter F/F, a synchronous meter SYN, a synchronous indicator lamp SYN-L, a touch screen HMI, a buzzer BZ, a manual synchronous selection switch SW1 and a power station management mode selection switch SW 2.
4. A floating dock panelboard for use with a 3-phase 4-wire grounding system according to claim 3 wherein: the two load screens are respectively a 440V load screen and a 220V load screen, the 440V load screen is used for feeding 440V and 220V power supplies, providing power supplies for ship pump and fan loads and providing overload and short-circuit protection; the 220V load screen is used for feeding 220V power supply, providing power supply for ship lighting and communication navigation loads, and providing overload and short-circuit protection.
5. A floating dock panelboard for use with a 3-phase 4-wire grounding system according to claim 4 wherein: the 440V load screen is provided with a3 phi 440V load feed switch QF11, a 440V power distribution box load feed switch QF12, a R, S, T main bus bar is respectively connected to the 3 phi 440V load feed switch QF11 and the 440V power distribution box load feed switch QF12 through a R, S, T vertical bus bar, and an N-phase main bus bar is connected to the 440V power distribution box load feed switch QF12 through an N-phase vertical bus bar;
the 220V load screen is provided with three single-phase terminal load feed switches QF21/QF22/QF23, a 220V lighting distribution box load QF24, shore power switches QF25 and R, S, T main bus bars are connected to the three single-phase terminal load feed switches QF21/QF22/QF23, the 220V lighting distribution box load QF24 and the shore power switch QF25 through R, S, T three-phase bus bars, and the N-phase main bus bar is also connected to the three single-phase terminal load feed switches QF21/QF22/QF23, the 220V lighting distribution box load QF24 and the shore power switch QF25 through an N-phase vertical bus bar; the 220V load screen is further provided with a 220V ammeter A2, an ammeter change-over switch AS2,220V current transformer CT2, a shore power ammeter A3, an ammeter change-over switch AS3, a shore power voltmeter V3, a voltmeter change-over switch VS3, a shore power supply current transformer CT5, a shore power supply effective indicator light h11 and a shore power supply indicator light h 12.
6. A floating dock panelboard for use with a 3-phase 4-wire grounding system according to claim 5 wherein: the grounding point of the PE bus bar is arranged in the 440V load screen, and the N-phase main bus bar is connected to the PE bus bar in the 440V load screen through the N-phase vertical bus bar.
CN201922197848.9U 2019-12-10 2019-12-10 Floating dock distribution board suitable for 3-phase 4-wire grounding system Active CN211859156U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922197848.9U CN211859156U (en) 2019-12-10 2019-12-10 Floating dock distribution board suitable for 3-phase 4-wire grounding system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922197848.9U CN211859156U (en) 2019-12-10 2019-12-10 Floating dock distribution board suitable for 3-phase 4-wire grounding system

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Publication Number Publication Date
CN211859156U true CN211859156U (en) 2020-11-03

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Application Number Title Priority Date Filing Date
CN201922197848.9U Active CN211859156U (en) 2019-12-10 2019-12-10 Floating dock distribution board suitable for 3-phase 4-wire grounding system

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