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Medium-voltage direct zone distribution system

A DC area power distribution and low-voltage DC technology, which is applied in the direction of DC network circuit devices, electrical components, circuit devices, etc., can solve problems such as complex structure of AC area power distribution network, high-power equipment fault handling, and difficulty in power scheduling, etc., to achieve Easy to upgrade, enhance maintainability and flexibility, highly integrated effect

Active Publication Date: 2013-12-18
NAVAL UNIV OF ENG PLA
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the AC regional power distribution network structure is a relatively complex network structure, which is a challenge to the planning and safe operation of the ship power system
Equipment failure, start and stop of high-power equipment, misoperation, etc. will make troubleshooting and power scheduling more difficult

Method used

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specific Embodiment 1

[0034] The network structure diagram of specific embodiment 1 is as figure 2 As shown, it consists of DC / DC converter, starboard and starboard DC bus connection screen, DC / AC inverter, DC / DC chopper, DC / AC inverter, input automatic selection module, AC load screen, DC load screen , AC jump screen, DC jump screen and its ancillary equipment. Two DC / DC converters supply power to port or starboard low-voltage DC bus, DC / AC inverter supplies power to daily AC loads, DC / DC chopper supplies power to daily DC loads, DC / AC inverter drives motor , the input automatically selects the module to supply power for low-voltage DC loads. If the network contains more than three (including three) power distribution partitions, only two DC / DC converters in two of the power distribution partitions are started during normal operation to supply power to the port or starboard low-voltage DC bus, and the remaining DC / DC converters are A DC converter acts as a backup power source.

[0035] When th...

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Abstract

The invention belongs to the field of marine electric power systems, and particularly relates to a medium-voltage direct zone distribution system suitable for a marine comprehensive electric power system in the medium voltage direct current mode. The medium-voltage direct zone distribution system comprises a plurality of distribution zones and an energy managing system, a DC / DC current transformer is arranged inside each distribution zone, the output end of each DC / DC current transformer is respectively connected with a left-ship-board low-voltage direct-current bus and a right-ship-board low-voltage direct-current bus through isolation interlock switches, left-ship-board direct-current bus contact screens and right-ship-board direct-current bus contact screens are connected with the left-ship-board low-voltage direct-current bus and the right-ship-board low-voltage direct-current bus respectively, the output end of each left-ship-board direct-current bus contact screen and the output end of each right-ship-board direct-current bus contact screen are respectively connected with the input ends of power electronic devices, and the energy managing system is connected with the power electronic devices in the distribution zones through a communication bus. According to the medium-voltage direct zone distribution system, the use amount of electric cables is effectively reduced, the number and the area of cable cabin-penetrating holes are reduced, the cable laying time is shortened, the size and the weight of the medium-voltage direct zone distribution system are reduced, and the overall cost such as the economy cost, the size cost and the weight cost of the medium-voltage direct zone distribution system is reduced.

Description

technical field [0001] The invention belongs to the field of ship power systems, and in particular relates to a medium-voltage direct current regional power distribution system suitable for a ship integrated power system using medium-voltage direct current. Background technique [0002] After more than 20 years of exploration and practice, the shipbuilding industry has reached a consensus: the development direction of the future ship power system is an integrated power system. The integrated power system mainly includes six modules: power generation, power distribution, power transformation, propulsion, energy storage, and monitoring / management. For power generation modules, due to their advantages in power density, volume weight, electromagnetic compatibility, vibration and noise, etc., medium voltage DC (4-35kV DC) will gradually replace medium-voltage AC (4-13.8kV AC) as the standard form of power generation modules . As one of the important components of the comprehens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J1/00
Inventor 马伟明范学鑫付立军肖飞揭贵生王瑞田谢帧杨国润
Owner NAVAL UNIV OF ENG PLA
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