A large-capacity off-grid wind-solar hybrid hydrogen production direct current microgrid and its control method

A DC micro-grid and wind-solar hybrid technology, applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve the problems of large safety risks of the system, large fault influence range, voltage and power influence, etc., to improve operational reliability, Effect of improving power factor and harmonic quality and reducing capacity

Active Publication Date: 2022-07-19
NAVAL UNIV OF ENG PLA
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the randomness of power generation capacity of different new energy stations, it is easy to cause voltage fluctuations and oscillations in different frequency bands on the same AC power grid, which brings greater security risks to the entire system; when a source short circuit occurs in the system, the voltage and The power is affected, and the fault affects a large range

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A large-capacity off-grid wind-solar hybrid hydrogen production direct current microgrid and its control method
  • A large-capacity off-grid wind-solar hybrid hydrogen production direct current microgrid and its control method
  • A large-capacity off-grid wind-solar hybrid hydrogen production direct current microgrid and its control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0040] It is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inside", "outside", etc. indicate t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a large-capacity off-grid wind-solar hybrid hydrogen production direct current microgrid and a control method thereof, including m medium-voltage alternating current sub-grids, medium-voltage direct current distribution boards, k DC / DC hydrogen production power sources, and r DC / AC power sources. Inverter power supply and low-voltage AC network power supply, each medium-voltage AC sub-network includes new energy stations, energy storage devices and medium-voltage AC power distribution boards; the energy storage device adopts voltage rise and constant frequency control, and photovoltaic power plants and wind turbines use Constant power control, DC / DC hydrogen production power supply adopts the operation mode of constant input DC voltage + constant output current control, which can achieve the control goal of "load follows the source", and the system load can be automatically adjusted according to the change of the output of the new energy station , so that the new energy power generation capacity is maximized, and all equipment is based on local control, reducing the dependence of the system collaborative control on the communication system and energy management system.

Description

technical field [0001] The invention relates to the technical field of off-grid wind-solar hybrid hydrogen production power systems, in particular to a large-capacity off-grid wind-solar hybrid hydrogen production direct current microgrid and a control method. Background technique [0002] Hydrogen energy is a clean, carbon-free, flexible and efficient secondary energy with rich application scenarios. It has the characteristics of high energy density, large capacity, long life, easy storage and transmission, etc. It can be used as a large-scale comprehensive green development storage for wind power and photovoltaics. The preferred option to use. The use of wind-solar hybrid hydrogen production can solve the problems of energy storage difficulties and maximize utilization of wind and photovoltaic power generation. In traditional grid-connected hydrogen production systems, electrolyzers generally operate under stable electrical energy conditions and constant hydrogen producti...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/46H02J3/32H02J15/00
CPCH02J3/388H02J3/46H02J3/32H02J15/008H02J2300/24H02J2300/28Y02E70/30
Inventor 肖飞马凡胡祺王瑞田付立军范学鑫肖润龙
Owner NAVAL UNIV OF ENG PLA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap