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An Energy Management Method for Electric-Hydrogen Island DC Microgrid

A DC microgrid and energy management technology, which is applied in parallel operation of DC power supply, DC network circuit device, load balancing in DC network, etc. Problems such as poor state, to achieve the effect of improving stability and economy, avoiding abandoned light, and improving energy utilization

Active Publication Date: 2021-09-03
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing methods for the energy management of the microgrid are relatively simple, and multiple indicators of the system are not considered uniformly, resulting in low system efficiency and poor energy storage status.

Method used

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  • An Energy Management Method for Electric-Hydrogen Island DC Microgrid
  • An Energy Management Method for Electric-Hydrogen Island DC Microgrid
  • An Energy Management Method for Electric-Hydrogen Island DC Microgrid

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Embodiment Construction

[0056] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further elaborated below in conjunction with the accompanying drawings.

[0057] In this example, see figure 1 As shown, the present invention proposes an energy management method for an electric-hydrogen island DC microgrid. The electric-hydrogen island DC microgrid includes a photovoltaic power generation system, a fuel cell system, an electrolyzer system, a hydrogen storage tank system, a storage battery system, and a control center , the photovoltaic power generation system, fuel cell system, electrolyzer system and battery system are all connected to the DC bus, the electrolyzer system is connected to the fuel cell system through the hydrogen storage tank system, the control center detects the status of each system, and through the layer control for energy management of each system; the photovoltaic power generation array is the energy sup...

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Abstract

The invention discloses an energy management method of an electric-hydrogen island DC microgrid, which measures the state of the electric-hydrogen island DC microgrid at the current moment; and calculates each energy storage at the current moment based on the measured data based on the system economy and stability through the top layer of the layered control The optimal output power reference value of the system; through the bottom layer of hierarchical control, the output power of each system is adjusted according to the power reference value, and the working mode of the battery system, fuel cell system, electrolyzer system and hydrogen storage tank system is controlled to complete the island DC Energy management in microgrids. On the basis of ensuring the voltage stability and power balance of the microgrid system, the present invention can ensure the minimum system use cost, can ensure that the energy storage state of the energy storage element remains balanced, and improves the stability and economy of the microgrid operation.

Description

technical field [0001] The invention belongs to the technical field of direct current microgrids, and in particular relates to an energy management method for an electric-hydrogen island direct current microgrid. Background technique [0002] With the development of microgrid technology, the energy storage system in microgrid is gradually diversified, and electric energy storage and hydrogen energy storage are closely related to the operation and control of microgrid. With the completion and demonstration of the project, it will promote the development of new energy sources such as distributed energy and energy storage, and will also conduct beneficial explorations on multi-energy complementarity, and promote microgrids to play an important role in energy services. Microgrid power generation has many advantages compared with traditional power generation methods due to its greenness, environmental protection and large power generation. However, due to the strong randomness an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J1/00H02J1/14H02J1/10
CPCH02J1/00H02J1/10H02J1/14
Inventor 李奇蒲雨辰苏波陈维荣
Owner SOUTHWEST JIAOTONG UNIV
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