CN204297042U - There is the driven by power long liner of photovoltaic generating system - Google Patents

Abstract

The utility model relates to a longline fishing boat, in particular to an electrically driven longline fishing boat with a photovoltaic power generation system, which belongs to the technical field of longline fishing boats. An electric-driven longline fishing boat with a photovoltaic power generation system is characterized in that: a solar photovoltaic system is configured, and the solar photovoltaic system supplies power to a main switchboard (MSB) and a DC24V low-voltage charging and discharging board (CHP) at the same time; it is arranged side by side A group of diesel generator sets, each diesel generator is connected to the main switchboard (MSB), and the main switchboard (MSB) is connected to the drive system frequency converter through the propulsion system filter, and the drive system frequency converter is connected to the propulsion system The motor (M1) is connected; the main switchboard (MSB) is also connected to the DC24V low-voltage charging and discharging board (CHP), and the DC 24V low-voltage charging and discharging board (CHP) charges the DC24V battery pack, and simultaneously charges the low-voltage DC Load (LV) power supply.

Description

Electric drive longline fishing boat with photovoltaic power generation system

technical field

The utility model relates to a longline fishing boat, in particular to an electrically driven longline fishing boat with a photovoltaic power generation system, which belongs to the technical field of longline fishing boats.

Background technique

my country is the country with the largest number of fishing boats in the world, and the fuel consumption of fishing boats accounts for more than 50% of the production cost of marine fisheries, accounting for about 13% of the total diesel consumption in the country. At present, the vast majority of fishing boats in my country are facing the status quo of low power efficiency, aging diesel engines, high energy consumption, and serious pollution from inhalable particles, SOx, and NOx emissions.

The existing longline fishing boats in my country are usually powered by a diesel engine through a gearbox to drive the propeller to provide driving force for the fishing boat. Longline fishing boats generally sail and work under relatively complicated conditions. The engine power of longline fishing boats is usually configured according to the maximum sailing speed requirements, but fishing boats have a long time to set and fish in the operating conditions. During this process, the fishing boat usually sails at a relatively low speed, and the forward and reverse operations are frequent, and the output power of the required engine is often only 1/3 of the maximum output power. The engine works under this condition for a long time, and the combustion is not sufficient On the one hand, it will lead to an increase in unit fuel consumption, waste fuel, and increase SOx and NOx emissions; on the other hand, it will cause greater damage to the engine. When the ship is in port for refurbishment, in order to provide daily power supply such as lighting on the ship, the diesel generator set on the ship needs to run, even if the power consumption is small, the diesel generator needs to be started to supply power, causing unnecessary waste.

Contents of the invention

The technical problem to be solved by the utility model is: in the existing longline fishing boat, the propeller is driven by the diesel engine through the gear box to provide driving force for the fishing boat. Due to the slow speed of the longline fishing boat during the fishing and fishing process, the engine Inefficient combustion, waste of fuel, and even damage.

The utility model takes the following technical solutions:

An electric-driven longline fishing boat with a photovoltaic power generation system is equipped with a solar photovoltaic system, and the solar photovoltaic system supplies power to the main switchboard MSB and the DC24V low-voltage charging and discharging board CHP at the same time; a group of diesel generator sets are arranged in parallel, and each diesel generator The generators are respectively connected to the main switchboard MSB, the main switchboard MSB is connected to the drive system frequency converter through the propulsion system filter, and the drive system frequency converter is connected to the propulsion motor M1; the main switchboard MCB is also It is connected with the DC24V low-voltage charging and discharging board CHP, and the DC 24V low-voltage charging and discharging board CHP charges the DC24V battery pack and supplies power to the low-voltage DC load LV at the same time.

Further, the main switchboard MSB is also connected to the main lighting transformer.

Further, the main switchboard MSB is also connected to the AC shore power box.

Further, the main switchboard MSB is also connected to the engine room load M2.

Further, the main switchboard MSB is also connected to AC220V living lighting navigation communication load L1.

Further, the solar photovoltaic system supplies power to the main distribution board MCB through the inverter U1; and supplies power to the low-voltage charging and discharging board CHP through the solar photovoltaic panel controller MPPT.

The beneficial effects of the utility model are:

1) Using solar photovoltaic power generation, energy saving and environmental protection.

2) By setting the main switchboard MSB, multiple parallel generating sets and the power station management system PMS in the main switchboard MSB, the number of generators to be turned on for the longline fishing boat under different working conditions is automatically selected to obtain suitable power generation Power, thereby improving the energy consumption efficiency of generator sets G1-G4.

3) The design is thoughtful, and the design takes into account the main lighting transformer, AC shore power box, engine room load, AC220V living lighting, navigation and communication load and other electrical loads of the longline fishing boat.

4) By setting propulsion system frequency converter FC1-FC2, propulsion system propulsion motor M1, fixed-pitch propeller PRO and propulsion system filter T1-T2, the power control and speed control of longline fishing boats under various working conditions can be realized, and the longline speed can be improved. Maneuverability and reliability of fishing boats.

Description of drawings

Fig. 1 is a diagram of a power supply system of an electrically driven longline fishing boat with a photovoltaic power generation system according to the present invention.

In the figure: G1-G4 are AC diesel generator sets; MSB is the main switchboard; CHP is the DC24V low-voltage charging and discharging board; SC is the AC shore power box; T1-T2 is the propulsion system filter; FC1-FC2 is the frequency conversion of the propulsion system M1 is the propulsion system propulsion motor; PRO is the fixed-pitch propeller; M2 represents the engine room load (refrigeration compressor unit, fan, water pump, oil pump, etc.); M3 represents the electric deck mechanical load (electric rope receiving machine, electric rope throwing machine, and electric winch, etc.); P1 is AC380V AC load distribution box; T3-T4 is the main lighting transformer; L1 is AC220V living lighting navigation communication load; SEP is solar photovoltaic panel; MPPT is solar photovoltaic panel controller; U1 is Inverter; GB1-GB2 are DC24V battery packs; LV is low-voltage DC load; PMS is the power management system of the power station, installed in the main switchboard.

Detailed ways

Below in conjunction with specific embodiment and accompanying drawing, the utility model is further described.

Referring to Figure 1, when the longline fishing boat is under sailing conditions, the G1-G4 generator sets are used as the main power supply of the fishing boat, and the power distribution through the main switchboard MSB is used for the propulsion system frequency converter FC1/FC2, the filter device T1/T2 and The propulsion motor M1 provides working power, and at the same time provides AC380V working power for the refrigeration compressor unit, water pump, oil pump and other cabin loads M2, AC load distribution box P1, etc., and provides AC220V for living lighting, navigation and communication equipment L1 through the main lighting transformer T3/T4 The AC working power supply provides DC24V DC power for the battery pack GB1/GB2 and the low-voltage load LV through the charging and discharging board CHP. The frequency converter FC1/FC2 of the electric propulsion system controls the power and speed of the propulsion motor M1, and drives the propeller PRO to provide power for the fishing boat to sail. The power and speed control of the propulsion motor M1 through the electric propulsion system can realize full-speed sailing or normal cruising operation of the fishing boat. At this time, the power station automatically determines that the G1-G4 generator sets are sailing at full speed and at full speed through the power management system PMS in the main switchboard MSB. The number of grid connections under normal cruising conditions enables the generator load rate of fishing boats to reach the best load rate under sailing conditions and improves the fuel efficiency of generator diesel engines.

When the longline fishing boat is entering and leaving the port and operating conditions, the working conditions of the fishing boat are relatively complicated. At this time, the speed of the fishing boat is low, and the driving and reversing are more frequent. In addition to power supply for communication loads, it is also necessary to supply power to electric deck mechanical loads M3 such as electric rope receiving machines, electric rope throwing machines, and electric winches. At this time, the power station determines the power generation of G1-G4 through the power management system PMS in the main switchboard MSB. The number of grid-connected units under the operating conditions of entering and leaving the port, fishing and setting, and the load is automatically distributed at the same time, so that the load rate of the fishing boat generator is always maintained in the high-efficiency working area of 75%-90%, so that the fishing boat can reach the best It improves the fuel efficiency of generator sets, reduces fuel emission pollution, and prolongs the life of diesel engines at the same time.

When the ship is berthing and berthing, the fishing boat is in the low-load operation state of berthing, and the power grid is switched to the state where the shore power box SC provides the working power for the whole ship, and the generator sets of G1-G4 stop working, thereby reducing fuel consumption.

The electric propulsion system of the longline fishing boat is also equipped with T1 and T2 filtering devices to suppress the harmonics of the power grid, thereby improving the power supply quality of the power grid. In the design of the electric propulsion system, the filtering device T1/T2 and the frequency converter FC1/FC2 are designed in the form of mutual backup, and a manual operation mode is provided to ensure the reliability of the whole ship's propulsion system.

As an independent low-voltage power supply system, the photovoltaic power generation system is independent of the main power supply of the G1-G4 AC generator set and can operate under the entire working condition. Through the solar photovoltaic panel controller MPPT, it can be switched to the fishing boat low-voltage charging and discharging panel CHP , to charge the low-voltage battery packs GB1 and GB2, and at the same time directly supply power to the low-voltage DC load LV, which can also be switched to the inverter U1 and merged into the AC220V power grid in the main switchboard MSB to supply lighting, navigation and communication equipment L1 for fishing boats, etc. Provide AC220V power supply.

When the fishing boat is sailing, entering and leaving the port, operating conditions and berthing conditions, the AC220V power supply of the fishing boat’s living lighting, navigation and communication equipment is generally provided by the G1-G4 generator set or the shore power box SC through the main lighting transformer T3 or T4. When G1- G4 AC generator set, shore power box SC or main lighting transformer stop working, the photovoltaic power generation system can be used as a clean power supply, and the inverter U1 can supply power to loads such as AC AC220V to meet the basic power supply requirements of the entire ship's living lighting and communication equipment. When the G1-G4 AC generator set fails and shuts down, the photovoltaic power generation system can also be used as an emergency power supply to charge the battery pack GB1/GB2 by connecting to the low-voltage charging and discharging board CHP, and at the same time supply power to the DC24V low-voltage equipment, so as to improve the living lighting of fishing boats. While the navigation and communication equipment is safely powered, due to the use of clean energy, the fuel consumption of diesel generator sets can be reduced and the operating cost of fishing boats can be saved.

Electric drive technology is applied to longline fishing boats with complex and changeable working conditions. Compared with traditional longline fishing boats, it can greatly improve the propulsion efficiency of the propulsion system and the flexible design of the propulsion device of the equipment. The general operating area of longline fishing boats is in the north and south tropical and temperate waters of the equator, with extensive solar energy resources. As a clean and renewable resource, solar energy has broad application space for longline fishing boats.

Claims (6)

1. An electrically driven longline fishing boat with a photovoltaic power generation system, characterized in that: A solar photovoltaic system is configured, and the solar photovoltaic system supplies power to the main switchboard (MSB) and the DC24V low-voltage charging and discharging panel (CHP) at the same time; A group of diesel generator sets are arranged side by side, and each diesel generator is connected to the main switchboard (MSB) respectively, and the main switchboard (MSB) is connected to the frequency converter of the drive system through the filter of the propulsion system, and the frequency converter of the drive system Connect with propulsion motor (M1); The main switchboard (MSB) is also connected to the DC24V low-voltage charging and discharging board (CHP), and the DC24V low-voltage charging and discharging board (CHP) charges the DC24V battery pack and supplies power to the low-voltage direct current load (LV) at the same time. 2. The electrically driven longline fishing boat with photovoltaic power generation system according to claim 1, characterized in that the main switchboard (MSB) is also connected to the main lighting transformer. 3. The electrically driven longline fishing boat with a photovoltaic power generation system according to claim 1, characterized in that: the main switchboard (MSB) is also connected to an AC shore power box. 4. The electrically driven longline fishing boat with a photovoltaic power generation system according to claim 1, characterized in that: the main switchboard (MSB) is also connected to the engine room load (M2). 5. The electrically driven longline fishing boat with photovoltaic power generation system according to claim 1, characterized in that: said main switchboard (MSB) is also connected to AC220V living lighting navigation communication load (L1). 6. The electrically driven longline fishing boat with a photovoltaic power generation system as claimed in claim 1, characterized in that: the solar photovoltaic system supplies power to the main switchboard (MSB) through an inverter (U1); The photovoltaic panel controller (MPPT) supplies power to the low-voltage charging and discharging panel (CHP).