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Port shore-based alternating current and direct current hybrid power supply and power supply control method

An AC/DC hybrid, power supply technology, applied in AC network circuits, battery circuit devices, electric vehicle charging technology, etc. Insufficient control ability and lack of flexible networking control function of shore power system, to achieve the effect of improving charging efficiency, increasing consumption ratio, and reducing waiting time

Pending Publication Date: 2022-05-13
NARI TECH CO LTD +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, the flexible networking control function of the shore power system is lacking. On the one hand, it is the utilization of clean energy and energy storage; Each is different. The three elements of power supply capacity, power system and frequency constitute the diversity of demand for power supply methods. It is difficult for an independent shore power system to meet the power supply requirements.
The redundant control capability of large-capacity shore power supply is insufficient, and the overall planning and utilization of shore power resources are not fully reflected

Method used

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  • Port shore-based alternating current and direct current hybrid power supply and power supply control method
  • Port shore-based alternating current and direct current hybrid power supply and power supply control method
  • Port shore-based alternating current and direct current hybrid power supply and power supply control method

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Embodiment 1

[0065] There are many ships in inland river basins with different types. The requirements for AC power supply, DC power supply, frequency conversion power supply and power supply capacity vary with different types of ships. Whether the ship power system can be connected to the shore-based power supply system depends largely on the The nature of the base power supply. The electrical topology of the shore-based power supply can determine the power supply capacity and the flexibility of transformation. The control strategy of the shore-based power supply can well determine the power supply mode and the stability of flexible networking. This embodiment uses a single-module converter as the power supply Take this as an example.

[0066] According to the situation of berthing ships, if one module can be installed to meet the power supply demand, it is designed according to the independent control scheme of one module. The control of a single module is relatively simple, and the coor...

Embodiment 2

[0077] This embodiment serves as the further analysis of embodiment 1. Specifically, the single converter of Embodiment 1 is extended to a plurality of converters. According to the statistical data of the actual number of ships stopped at the port, shore-based power supplies with different powers will be constructed. In ports with many calls, high power, and multiple types of ships calling at the same time, build modularized multi-stage parallel power supply facilities. see image 3 , the multi-module converter parallel power supply includes three single-module converter power supplies in Embodiment 1, and adopts the AC and DC side parallel connection mode. Specifically, the power supplies of the three single-module converters are respectively connected to the transformer through switches K1_IN, K2_IN, and K2_IN, and the power grid is powered through the transformer. Each single-module converter power supply includes an AC-DC single-stage rectification module and an AC-DC c...

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Abstract

The invention discloses a port shore-based alternating-current and direct-current hybrid power supply and a power supply control method. The power supply comprises at least one single-module converter. The single-module converter comprises a rectification module, an AC charging interface device, a DC charging interface device, a photovoltaic power generation system, an energy storage system and a controller. According to the invention, single-module operation independent control, multi-module parallel operation master-slave control and multi-energy coordination control can be realized. According to different ship types, multiple control modes such as ship direct-current power supply, ship alternating-current variable-frequency power supply and converter parallel compatibilization are realized. According to the diversified control method compatible with power supply of different ships, the problem that shore power cannot be used when the ships berth due to a single power supply mode is solved.

Description

technical field [0001] The invention relates to a port shore-based AC-DC hybrid power supply and a power supply control method, belonging to the technical field of power system operation and control. Background technique [0002] Shore-based power supply is an important measure for the green development of ports. Under the vigorous promotion of the government, there are more and more shore-based power supply constructions. However, different ships have different power supply requirements, and the power supply differences are obvious. Shore-based power supply cannot meet the requirements of most ships at the same time. , its actual utilization rate is very low, and improving the utilization rate of ship shore-based power supply is an urgent problem to be solved at present. [0003] Shore-based power supply is mainly for fuel ships, which cannot meet the charging needs of pure electric ships. When the fuel oil ship is docked at the berth, the power supply is stopped, and the ...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/02H02J3/32H02J7/35B60L53/10B60L53/51B60L53/80B60L53/53
CPCH02J3/007H02J3/02H02J3/32H02J7/35B60L53/10B60L53/51B60L53/80B60L53/53Y02T10/70Y02T10/72Y02T10/7072Y02T90/12Y02T90/14
Inventor 邓任任吾喻明黄堃何胜利阮文骏刘海峰肖宇华温殿国迟福海王磐任禹丞任家磊张如通郑松松邵阳
Owner NARI TECH CO LTD
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