Three phase four wire system ship power grid power management system and method

A technology of three-phase four-wire system and grid power, which is applied in the direction of reducing asymmetry of multi-phase network, eliminating/reducing asymmetry of multi-phase network, adjusting AC network voltage, etc., and can solve problems such as three-phase imbalance

Active Publication Date: 2017-05-17
WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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Problems solved by technology

[0005] One of the purposes of the present invention is to overcome the deficiencies of the prior art, aiming at the problems caused by the direct use of a large numb

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  • Three phase four wire system ship power grid power management system and method
  • Three phase four wire system ship power grid power management system and method
  • Three phase four wire system ship power grid power management system and method

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Embodiment Construction

[0060] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0061] refer to figure 1 As shown, the present invention discloses a power management system for a three-phase four-wire ship power grid that needs to use a large number of single-phase loads in the power grid, which can monitor the state of single-phase loads, dynamically adjust the size of the load, and control the input and cut-off of the load , which includes a three-phase four-wire power grid, a generator 3, a main control unit 1, several unit control units 2 connected to the main control unit 1, and a load control unit 7 connected between the main control unit 1 and the power grid, the The load control unit 7 is connected with a single-phase negative 4, and the power grid supplies power to the single-phase load 4 by selecting a certain phase in the U / V / W phase to connect to the neutral line, and the power management system controls the single-phase The...

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Abstract

The invention comprises three phase four wire system ship power grid power management system and method which comprises a three phase four wire system grid, a generator, a main control cell, a plurality of generator set control units connected with the main control cell and a load control unit connected between the main control cell and the power grid, the local control unit connected with a single-phase load, the power grid which supplies power to the single-phase load by taking the phase of U/v/w to connect with neutral wires, the main control cell and the power grid and the generator set control unit and the generator are connected with the current transformer and the voltage transformer respectively, the main control unit is connected with human-computer interface. The invention also discloses management method; the real-time power of the ship equipment and equipment power is adjusted dynamically by automatic intelligent devices, the distribution of three-phase load can be within the threshold rang of the stability requirement of the ship power grid., when the balance occurs the lode is cut, thus the safe use of the ship can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of industrial control, and in particular relates to a three-phase four-wire ship power management system and a method thereof. Background technique [0002] A large number of modern marine equipment has been electrified, but the existing marine power management systems on the market have not yet been popularized, and there is no unified design standard, especially for the power management systems of three-phase four-wire power stations. focus on. [0003] Some ships require a large number of single-phase loads for operation, such as fish luring light loads for fishing boats. At this time, the advantage of using a three-phase four-wire power grid is that a large number of single-phase loads can be used with the neutral line, eliminating the need for power transformers. The manufacturing cost of the ship is saved, the economic benefit is improved, and the structure of the power system is simplified, the failu...

Claims

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Application Information

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IPC IPC(8): H02J3/26H02J3/14
CPCH02J3/14H02J3/26Y02E40/50
Inventor 刘文达柯常国窦晓峰万丛张奇
Owner WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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