CN218335345U

CN218335345U - Power generation set auxiliary power distribution system of dynamic positioning ship

Info

Publication number: CN218335345U
Application number: CN202222804124.8U
Authority: CN
Inventors: 张建平; 赵姬峰; 卞邦亮; 唐杰; 陈晓宇; 李皓; 胡继良
Original assignee: Shanghai Zpmc Electric Co ltd; Shanghai Zhenghua Heavy Industries Co Ltd
Current assignee: Shanghai Zpmc Electric Co ltd; Shanghai Zhenghua Heavy Industries Co Ltd
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2023-01-17
Anticipated expiration: 2032-10-24

Abstract

The utility model discloses a generator set auxiliary power distribution system of a dynamic positioning ship, which comprises a first DP subarea formed between a left engine room and a left distribution board and a second DP subarea formed between a right engine room and a right distribution board; the first DP partition is arranged the same as the second DP partition; a generator set, a 440V auxiliary power supply board and a partition 230V power supply board which correspond to the generator set are arranged in the left engine room; a 440V main distribution board, a 230V main distribution board and a 24VDC UPS power board are arranged in the left distribution board; 2 paths of power supplies on the 440V auxiliary power panel respectively correspond to 440V main distribution panels and 440V main distribution panels in the right distribution panel; the 2-path power supply on the 24VDC UPS power panel corresponds to the 230V main distribution panel and the 230V main distribution panel in the right distribution panel respectively. The utility model discloses DP2, DP3 operating mode generating set auxiliary power distribution system's fault probability has been reduced by a wide margin.

Description

Power generation set auxiliary power distribution system of dynamic positioning ship

Technical Field

The utility model relates to a generating set auxiliary system's distribution technique on boats and ships, more specifically say, relate to a generating set auxiliary distribution system of dynamic positioning boats and ships.

Background

The Dynamic Positioning (DP) ship can maintain the heading and the position of the ship in an instantaneously changeable marine environment, improves the reliability of various marine engineering operations, enlarges an operation window period, improves the flexibility of ship application, and is more and more widely applied in the field of marine engineering. The DP2 and DP3 operation modes are different in single-point fault, when a ship can select the DP2 or DP3 operation mode according to operation requirements and can form a closed-loop busbar or a straight busbar operation, different generator set auxiliary power distribution systems can greatly influence the fault occurrence probability and single-point fault consequences.

The single point of failure in the DP2 mode of operation does not include loss of the nacelle, and thus the gensets are typically located in the same nacelle and the main panel is typically located between the same panelboards. The auxiliary power distribution power supply of the generator set is correspondingly arranged according to the number of the sections of the main distribution board bus bar. For example, when the main distribution board bus bar is divided into two sections, the auxiliary distribution power supplies of the generator sets are also divided into two groups, the two sections of the bus bar respectively provide the auxiliary power supplies for the generator sets on the respective sections, and the maximum single-point fault cannot exceed the result caused by loss of one bus bar section; the single point failure of the DP3 operation mode comprises loss of one cabin due to fire or water ingress, and therefore the generator set is disposed in two or more cabins, the main distribution boards are separately disposed between the corresponding distribution boards to form DP zones, the power supply of the auxiliary system of the generator set is supplied by the main distribution boards of the respective DP zones, and the maximum single point failure is failure of the DP zone due to loss of one cabin; for a closed-loop busbar or a linear busbar system, namely a system for switching on and operating a busbar sectional contact switch in a DP mode, in order to reduce mutual influence of faults to the maximum extent, each generator set or a plurality of generator sets in each DP redundancy group and auxiliary systems such as a corresponding generator set cooling water system, a compressed air system, a fuel oil system, a lubricating system and the like form regional autonomy and are mutually independent so as to improve the availability of the generator sets in local faults, and a power distribution power supply of the auxiliary systems comes from the busbar connected with the corresponding generator sets so as to ensure the independence of each generator set, thereby realizing the fuel economy of ships under different operating conditions.

A multifunctional engineering ship such as a pipe-laying crane ship is provided with a plurality of engine rooms and distribution boards according to DP3, but can work in a DP2 mode or a DP3 mode according to actual working requirements. When the ship is in a DP3 mode, the busbar interconnection switch is switched off to form independent DP partition operation; and when in the DP2 mode, the busbar contact switch is switched on to form a linear busbar system. If the DP zone distribution board supplies power to the generator set auxiliary system of the corresponding cabin, no matter in DP3 mode or DP2 mode, when the zone distribution board fails, all generator sets related to the zone distribution board fail, which is equivalent to loss of one cabin, so that the failure consequence of DP2 mode is equivalent to DP3, and the failure consequence is enlarged; if the generator set and the respective auxiliary systems are configured according to the regional autonomy according to the operation requirement of the linear busbar, and the busbar corresponding to the generator set supplies power to the respective auxiliary systems of the generator set, more auxiliary transformers need to be configured according to the sectional number of the busbar of the generator set, so that the cost and the spatial arrangement are greatly influenced, and once equipment such as the transformers in an auxiliary power supply loop breaks down, the generator set is stopped by failure, so that the flexibility is poor.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned defect that exists among the prior art, the utility model aims at providing a generating set auxiliary power distribution system of dynamic positioning boats and ships has reduced DP2, DP3 operating mode generating set auxiliary power distribution system's fault probability by a wide margin, has alleviateed the trouble consequence, has guaranteed system operation sustainability.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a generator set auxiliary power distribution system of a dynamic positioning ship comprises a first DP subarea formed by a left engine room and a left power distribution board and a second DP subarea formed by a right engine room and a right power distribution board;

the first DP partition is arranged the same as the second DP partition;

a generator set, a 440V auxiliary power supply board and a partition 230V power supply board which correspond to the generator set are arranged in the left engine room;

a 440V main distribution board, a 230V main distribution board and a 24VDC UPS power board are arranged in the left distribution board;

2 paths of power supplies on the 440V auxiliary power supply board respectively correspond to the 440V main distribution board and the 440V main distribution board in the right distribution board;

2 paths of power supplies on the 24VDC UPS power panel respectively correspond to the 230V main distribution panel and the 230V main distribution panel in the right distribution panel;

auxiliary power distribution of the generator set in the left engine room and the right engine room is correspondingly arranged between the left distribution board and the right distribution board.

Preferably, the 440V main distribution board is connected with the 11kV medium voltage main distribution board through an 11kV/440V transformer.

Preferably, the 440V main distribution board is connected with the 230V main distribution board through a 440V/230V transformer.

Preferably, the power of the 440V auxiliary power panel is provided by a 24VDC/230VAC low-power inverter.

Preferably, the 24VDC/230VAC low-power inverter is arranged in an inverter box.

Preferably, the bulkheads between the left cabin and the left distribution board and between the right cabin and the right distribution board are watertight and fireproof A60 bulkheads.

The utility model provides a generating set auxiliary power distribution system of dynamic positioning boats and ships has following several beneficial effect:

1) The independent 440V power panel, the 24VDC UPS power panel and the 230V power supply are configured corresponding to each generator set, and two paths of power supplies are used for supplying power, so that regional autonomy of the generator sets and respective auxiliary systems required by operation of a DP2 mode I-shaped busbar system is realized, the flexibility and the redundancy of the system are ensured, the system can still normally operate through power switching when the main distribution board busbar subsection or

DP subareas

440V and 230V distribution boards fail, the auxiliary power transformers and switches with corresponding quantity are prevented from being configured according to the quantity of the busbar subsection of the generator sets, the overall configuration cost is greatly reduced, and the economical efficiency of the system is improved; in addition, the faults of the auxiliary power distribution system of the generator set in the DP2 and DP3 modes can be limited to one generator set to the maximum extent, so that the fault result cannot be enlarged, and the reliability of ships and operation is ensured;

2) By utilizing the UPS in the 24VDC UPS panel, the 24VDC power supply has an uninterrupted power supply function, and the 230V power supply for supplying DP critical loads and the control power supply of the 440V auxiliary power panel have the uninterrupted power supply function by configuring a 24VDC/230VAC low-power inverter, so that the additional distribution of the 230V UPS is avoided, and the system cost is reduced.

Drawings

Fig. 1 is a schematic diagram of an embodiment of the power distribution system for assisting a generator set of the present invention.

Detailed Description

In order to better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the accompanying drawings and embodiments.

With reference to fig. 1, the present invention provides a power positioning vessel auxiliary power distribution system for a generator set, which includes a first DP partition formed by a left engine room 101 and a left distribution board 102, and a second DP partition formed by a right engine room 201 and a right distribution board 202.

The first DP partition is arranged the same as the second DP partition.

The generator set, a 440V auxiliary power panel and a partition 230V power panel are arranged in the left cabin 101.

A 440V main panel, a 230V main panel, and a 24VDC UPS power panel are disposed within the left panel 102.

The 2-path power supply on the 440V auxiliary power panel corresponds to the 440V main distribution panel and the 440V main distribution panel in the right distribution panel 202 respectively.

The 2-path power supply on the 24VDC UPS power panel corresponds to the 230V main distribution panel and the 230V main distribution panel in the right distribution panel 202 respectively.

Auxiliary power distribution of generator sets in the left and

right engine rooms

101 and 201 is correspondingly arranged in the left and right

power distribution boards

102 and 202.

The 440V main distribution board is connected with the 11kV medium-voltage main distribution board through an 11kV/440V transformer.

The 440V main switchboard is connected with the 230V main switchboard through a 440V/230V transformer.

The power for the 440V auxiliary power board is provided by a 24VDC/230VAC low power inverter.

The 24VDC/230VAC low-power inverter is arranged in the inverter box.

The bulkheads between the left cabin 101 and the left distribution board 102 and between the right cabin 201 and the right distribution board 202 are watertight and fireproof A60 bulkheads, so that adjacent cabins cannot be affected when a single cabin is lost in the DP3 operation mode under the condition of single-point failure.

The utility model discloses generating set auxiliary power distribution system combines dynamic positioning boats and ships generating set quantity, the grouping of generating set and main distribution board, physics arranges, the dynamic positioning subregion, the auxiliary power source kind, according to both satisfying the DP3 mode, the operation operating mode of the female system of arranging of "one" font when satisfying the DP2 mode again, independent 440V auxiliary power panel is disposed respectively to every generating set, 24VDC UPS power panel, 230V's DP key load is converted into 230V power supply through respective 24VDC UPS power panel through power inverter, ordinary 230V non-DP load is according to generating set grouping by the 230V power panel power supply of respective subregion. The 440V auxiliary power panel and the 24VDC UPS power panel are powered by two paths of power supplies and respectively come from 440V main distribution panels and 230V main distribution panels of different power positioning subareas. Because the 230V control power supply of the 440V auxiliary power panel is also from the 230V power supply converted by the power inverter of the 24VDC UPS power panel, when two power supplies are switched, the UPS ensures that the running states of loads such as 440VAC, 24VDC, 230VAC and the like cannot be changed, when the main distribution panel of one power positioning subarea loses power, the load switching of 440VAC, 24VDC, 230VAC and the like of the auxiliary power distribution system of the generating set is completed instantly, and the system still runs as before.

The utility model discloses generating set auxiliary power distribution system is through setting up the independent 440V auxiliary power supply board, 24VDC UPS power supply board corresponding to generating set to and supply power by 24VDC UPS power supply board, through the independent 230V power of power inverter conversion, the consequence that the generating set auxiliary power distribution trouble leads to is restricted to this generating set, when having satisfied DP2 mode "a" font is female the operation operating mode of arranging the system, each other does not influence between the generating set; by switching power supply of two paths of power supplies of the 440V auxiliary power panel and the 24VDC UPS power panel, when the main distribution board bus section or the DP subarea 440V distribution board and the DP subarea 230V distribution board have faults, the power supply can be automatically switched and supplied by other bus section or DP subarea distribution boards, so that the flexibility and the usability of the system are improved, and the possibility of limited system operation caused by single-point faults is reduced; the 230V critical load is powered through a 24VDC/230VAC low power inverter, with the UPS in the 24VDC UPS power strip, avoiding the additional configuration of 230V UPS. The whole system greatly reduces the fault probability of the DP2 and DP3 working condition generator set auxiliary power distribution system, reduces fault consequences, guarantees system operation sustainability, simultaneously utilizes the UPS in the system, and has economy and novelty.

Examples

The auxiliary power distribution of the generator set mainly comprises: the 440V power supply provides a three-phase power supply for the auxiliary oil-water pump of the generator set; a 24VDC power supply which provides a 24VDC control power supply for a control system of the generating set; the 230V power supply of the DP key load provides a DP related control power supply and a single-phase power supply for the auxiliary system of the generator set; the common 230V power supply of the non-DP load provides common single-phase power supply such as an anti-condensation heater, screen cabinet lighting and the like for the auxiliary system of the generator set.

With continued reference to fig. 1, the auxiliary power distribution system of the generator set of the present embodiment includes 6 generator sets, the

generator sets

1, 2, and 3 are located in the left nacelle 101, and the

generator sets

4, 5, and 6 are located in the right nacelle 201; 11kV middle voltage distribution boards 7, 11kV/

440V transformers

9, 440V

main distribution boards

11, 440V/

230V transformers

13 and 230V main distribution boards 15 are arranged between the left distribution boards 102, and 11kV middle voltage distribution boards 8, 11kV/

440V transformers

10, 440V

main distribution boards

12, 440V/

230V transformers

14 and 230V main distribution boards 16 are arranged between the right distribution boards 202. The left cabin 101 and the left distribution board 102 form one DP subarea, the right cabin 201 and the right distribution board 202 form the other DP subarea, and the auxiliary power distribution of the

generator sets

1, 2, 3, 4, 5 and 6 positioned in the left cabin 101 and the right cabin 201 is correspondingly from the left distribution board 102 and the right distribution board 202.

In order to realize the regional autonomy of the generator sets and respective auxiliary systems required by the operation of a DP2 mode I-shaped busbar system, each generator set is provided with an independent 440V power panel, a 24VDC UPS power panel and a 24VDC/230VAC low-power inverter, and provides independent 440V power, a 24VDC power and a 230V power corresponding to each generator set, so that all the generator sets of a DP subarea are stopped when a main distribution board busbar section, a 440V main distribution board and a 230V main distribution board fail, and the 440V power panel and the 24VDC UPS power panel of each generator set are provided with two power supplies which are taken from different DP subareas. The UPS of the 24VDC UPS power panel is used for keeping the load operation loop state during power supply switching.

Corresponding to the

generator sets

1, 2 and 3 of the

left cabin

101,

440V power panels

37, 38 and 39 are arranged in the left cabin 101 nearby, and taking the 440V power panel 37 as an example, 2 paths of power supplies are respectively taken from a 440V main distribution panel 11 (normally closed line switch 33) of the left distribution panel 102 and a 440V main distribution panel 12 (normally open line switch 34) of the right distribution panel 202; corresponding to the

generator sets

4, 5, 6 of the

right cabin

201,

440V power panels

40, 41, 42 are provided in the right cabin 201, and taking 440V power panel 42 as an example, 2 power sources thereof are respectively taken from 440V main distribution panel 12 (normally closed incoming switch 35) of the

right distribution panel

202 and 440V main distribution panel 11 (normally open incoming switch 36) of the left distribution panel 102. Once the main distribution board bus segment of the DP subarea, the 440V main distribution board fails or the distribution board of the DP subarea is lost, the incoming line power supply is automatically switched to the healthy DP subarea, and the related generator sets are still available. The control power of the

440V power panels

37, 38, 39, 40, 41 and 42 is provided by the respective 24VDC/230VAC low-

power inverters

27, 28, 29, 30, 31 and 32, and since 24VDC is an uninterrupted power supply, the state of a load operation loop can be kept unchanged when the incoming line power of the 440V power panels is switched, and the control power is matched with power switching.

24VDC/230VAC

low power inverters

27, 28, 29 are mounted in inverter box 45, and 24VDC/230VAC

low power inverters

30, 31, 32 are mounted in inverter box 46.

Corresponding to the

generator sets

1, 2 and 3 of the left engine room 101, 24VDC

UPS power panels

21, 22 and 23 are arranged nearby the

left distribution board

102, and 2 power supplies of the 24VDC UPS power panel 21 are respectively taken from a 230V main distribution panel 15 (normally closed incoming switch 17) of the left distribution board 102 and a 230V main distribution panel 16 (normally open incoming switch 18) of the right distribution board 202; corresponding to the

generator sets

4, 5, 6 of the right cabin 201,

24VDC UPS panels

24, 25, 26 are disposed nearby the

right panel

202, and 2 power sources of the 24VDC UPS panel 26 are taken from the 230V main panel 16 (normally closed line switch 19) of the right panel 202 and the 230V main panel 15 (normally open line switch 20) of the left panel 102, respectively. Once the 230V main distribution board of the DP zone is failed or upstream equipment and a switch are failed, the incoming line power supply is automatically switched to the healthy DP zone, a 24VDC control power supply of the generator set and a 230V power supply of a DP key load can be maintained normal, the related generator set is guaranteed to be still usable, and a whole ship power source is guaranteed. The 24VDC is an uninterrupted power supply, and the switching of the incoming line power supply does not have any influence on the load loop.

To DP key load's 230V power, the utility model discloses make full use of the 24VDC UPS power strip that corresponds with generating set, synchronous miniwatt power inverter 27 has been set up, 28, 29, 30, 31, 32, convert 24VDC uninterrupted power into 230VAC, as respective 440V power strip control source, the 230V power that is used as DP key load among the generating set auxiliary system simultaneously, both simplified UPS uninterrupted power's setting, do not need repeated UPS that sets up, the switching return circuit has also been simplified simultaneously, the 230V power of DP key load has also been switched simultaneously in the switching of 24VDC UPS power strip inlet wire power.

For a common 230V power supply of non-DP loads, the power is supplied by respective partitions

230V power boards

43, 44 in genset groups and is arranged in left and right nacelles where most loads are located. Because the common 230V power supply corresponds to a non-DP load, the normal operation of a DP system cannot be influenced even if the power supply fails, and therefore two paths of power supply input are not needed. Ordinary 230V power and the 230V power of DP key load of non-DP load part, the uninterrupted power source's in the reduction 24VDC UPS power strip that can be very big power, only DP key load just via 24VDC UPS power strip power supply promptly, has reduced power inverter lectotype power simultaneously, has reduced system cost, makes the utility model discloses generating set auxiliary power distribution system's novelty, economy further can realize.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims

1. The utility model provides a generating set auxiliary power distribution system of dynamic positioning boats and ships which characterized in that: the device comprises a first DP subarea formed by a left cabin and a left distribution board and a second DP subarea formed by a right cabin and a right distribution board;

the first DP partition is arranged the same as the second DP partition;

2. The genset auxiliary power distribution system of the dynamically positioned vessel of claim 1 wherein: the 440V main distribution board is connected with an 11kV medium-voltage main distribution board through an 11kV/440V transformer.

3. The genset auxiliary power distribution system of the dynamically positioned vessel of claim 1 wherein: the 440V main distribution board is connected with the 230V main distribution board through a 440V/230V transformer.

4. The genset auxiliary power distribution system of the dynamically positioned vessel of claim 1 wherein: the power of the 440V auxiliary power panel is provided by a 24VDC/230VAC low-power inverter.

5. The genset auxiliary power distribution system of claim 4 wherein: the 24VDC/230VAC low-power inverter is arranged in an inverter box.

6. The genset auxiliary power distribution system of the dynamically positioned vessel of claim 1 wherein: bulkheads between the left cabin and the left distribution board and between the right cabin and the right distribution board are watertight and fireproof A60 bulkheads.