Check patentability & draft patents in minutes with Patsnap Eureka AI!

Energy management method, device and system based on energy storage inverter

An energy storage inverter, energy management technology, applied in the direction of AC network load balancing, reducing/preventing power oscillation, etc.

Active Publication Date: 2018-08-03
SUNGROW POWER SUPPLY CO LTD
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the inventors found that the storage capacity of the energy storage battery is fixed, and the frequency of the power grid has a certain degree of randomness. Therefore, how to provide an energy management method based on an energy storage inverter so that new energy generation can meet It is a major technical problem to be solved urgently by those skilled in the art to meet the frequency regulation requirements on the grid side and to meet the SOC control requirements of the energy storage battery.

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
  • Energy management method, device and system based on energy storage inverter
  • Energy management method, device and system based on energy storage inverter
  • Energy management method, device and system based on energy storage inverter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] See figure 1 , figure 1 It is a schematic flowchart of an energy management method based on an energy storage inverter provided by an embodiment of the present invention, including the steps:

[0050] S11. Obtain the current frequency of the power grid and the current state of charge of the energy storage battery.

[0051] Specifically, obtaining the current frequency of the power grid can be achieved through the following steps:

[0052] Obtaining the three-phase AC grid line voltage of the energy storage inverter;

[0053] Based on the preset phase-locked loop, the current frequency of the power grid is calculated.

[0054] Illustratively, the three-phase AC grid line voltages Uab, Ubc, Uca at the outlet of the inverter are collected, and the current frequency f of the grid is calculated through a phase-locked loop. Among them, such as figure 2 As shown, the calculation method of the phase-locked loop is: transform the line voltage through the rotating coordinate system to ...

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 embodiment of the invention provides an energy management method, device and system based on an energy storage inverter. The method comprises the steps that firstly, the current frequency of a power grid and a current electrical charge state of an energy storage battery are acquired; then, according to the current frequency of the power grid, the frequency modulation power of the energy storage inverter is calculated, and according to the current electrical charge state of the energy storage battery, the adjustment power of the energy storage battery is calculated; based on the frequency modulation power of the energy storage inverter and the adjustment power of the energy storage battery, a power instruction of the energy storage inverter is determined; finally, according to the powerinstruction and a preset formula of the energy storage inverter, a target driving switch signal for driving a power switch tube in the energy storage inverter is determined. In this way, by considering the one-time frequency modulation requirement of the power grid, in combination with the control requirement of an energy storage SOC, the energy conversion efficiency is improved.

Description

Technical field [0001] The invention relates to the technical field of new energy power generation, in particular to an energy management method, device and system based on an energy storage inverter. Background technique [0002] With the rapid development of new energy, the proportion of photovoltaic power generation in the power generation system is also increasing. However, due to the inherent characteristics of new energy such as randomness and volatility, it will affect the stability of the power generation system. In order to reduce the impact of new energy generation on the stability of the power generation system, energy storage batteries are usually used to buffer the electrical energy, and then integrated into the grid through an inverter. [0003] However, the inventor found that the storage capacity of the energy storage battery is fixed, and the grid frequency changes have a certain randomness. Therefore, how to provide an energy management method based on an energy ...

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
IPC IPC(8): H02J3/32H02J3/24
CPCH02J3/24H02J3/32
Inventor 胡超蔡壮曹伟余勇
Owner SUNGROW POWER SUPPLY CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com