Pre-fabricated Cabin Shore Power Supply System

Prefabricated cabin shore power supply system: Using land-based power supply to meet the power demand of berthing vessels. In order to reduce the fuel and harmful gases emitted during the operation of auxiliary engines when ships dock, in line with the national strategy of energy conservation and emission reduction. Using high-voltage rectification, sinusoidal inverter output, microprocessor bus control of dedicated variable frequency power supply technology, high-voltage junction boxes, mobile substations and high-voltage cables with safety quick connection devices, power is transmitted to the ship with a 95-square-meter high-voltage cable. Easy to wire, convenient to use, less wiring intensity and less wiring time for ships to dock, and improved work efficiency.

The energy storage prefabricated cabin contains a variety of devices. Here are the main devices and how they work:

1. Battery pack

Equipment: Composed of multiple battery cells connected in series and parallel, such as lithium-ion batteries, lithium iron phosphate batteries, etc.

Principle: Based on electrochemical REDOX reactions, when charged, electrical energy is converted into chemical energy and stored in the battery; When discharging, the chemical energy is converted into electrical energy and released to power an external load.

2. Battery Management System (BMS)

Equipment: including master control unit, slave control unit, voltage, current and temperature sensors, etc.

Principle: By collecting parameters such as voltage, current and temperature of the battery pack in real time through sensors, the main control unit analyzes and calculates based on these data to achieve functions such as charge and discharge control, balance management and safety protection of the battery pack, so as to extend the battery life and ensure the safe and stable operation of the battery pack.

3. Energy Storage Converter (PCS)

Equipment: mainly consisting of power conversion circuits, controllers, filters, etc.

Principle: When charging, convert alternating current from the power grid to direct current to charge the battery pack; When discharging, convert the direct current from the battery pack to alternating current and connect it to the grid or supply power to the local load. At the same time, power quality can be regulated, such as by controlling the output voltage, frequency, phase, etc., to meet grid access requirements.

4. Energy Management System (EMS)

Equipment: Consisting of monitoring hosts, servers, communication equipment, etc.

Principle: Collect the operation data of the energy storage system and the related power grid. Based on the preset strategies and algorithms, optimize the charging and discharging of the energy storage system, coordinate the interaction between the energy storage system and the power grid, and achieve the efficient operation of the energy storage system and the reasonable distribution of energy.

5. Air conditioning system

Equipment: Air-cooled or water-cooled air conditioning units are typically used.

Principle: By using the refrigeration cycle, the heat inside the battery compartment is transferred to the external environment, keeping the temperature inside the compartment within an appropriate working range for the battery, while regulating the humidity inside the compartment to prevent performance degradation or safety hazards due to overheating of the battery.

6. Fire protection system

Equipment: Including fire detectors, fire controllers, fire extinguishing devices, etc.

Principle: Fire detectors monitor fire signals such as smoke and temperature in the cabin in real time. When an anomaly is detected, the signal is sent to the fire controller, which issues instructions to activate the fire extinguishing device, release the fire extinguishing agent, quickly extinguish the fire, and prevent the fire from spreading.

1) Compact modular: The interior includes switch cabinets, transformers, variable frequency power supplies, and integrated control cabinets.

2) Equipment integration: Features such as flexible combination, easy transportation, quick installation and short construction period.

3) Factory prefabrication: It can be produced in the factory, or the overall commissioning of the shore power can be completed in the factory, and the user can complete the overall acceptance in the factory.

4) Simplified installation: After the user has completed the acceptance in the factory, only cable connection work is done on-site, greatly reducing the on-site installation workload.

5) Investment savings: Due to its high integration, small floor area, convenient site selection, flexible transportation mode, convenient construction, it can effectively shorten the construction period, save human and material resources, and reduce land area.

1) The construction and renovation of old wharf shore power can be customized and specialized according to the conditions of the wharf front.

2) In cases where the space of the wharf is limited, it can reduce the land area and shorten the construction period.

3) In situations where mobile power supply is required, it is convenient for transportation and has high utilization efficiency.

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