Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Energy storage system configuration method considering power grid frequency support demand

A technology of energy storage system and grid frequency, which is applied in the direction of circuit devices, wind power generation, electrical components, etc.

Active Publication Date: 2021-02-26
NORTHEAST DIANLI UNIVERSITY
View PDF8 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. The configuration of energy storage capacity, especially the inertia, is too dependent on control parameters and simulation experiments, and it is difficult to determine accurately and quantitatively while meeting the system frequency modulation requirements

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 storage system configuration method considering power grid frequency support demand
  • Energy storage system configuration method considering power grid frequency support demand
  • Energy storage system configuration method considering power grid frequency support demand

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] The following is attached Figure 1-4 The present invention will be further described in detail with the specific embodiments, and the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0066] An ESS configuration method considering the frequency response requirements of the power grid, including two parts: the calculation of the maximum power increment of the system and the ESS configuration:

[0067] 1. Calculation of the maximum power increment of the system:

[0068] H is the inertia constant of the synchronous motor, which represents the size of the mechanical inertia of the rotor. If only the inertia of the synchronous unit in the system is considered, then for a power system containing n synchronous units, the equivalent inertia constant H sys for:

[0069]

[0070] Where: H i and S i is the inertia constant and rated capacity of the i-th synchronous machine unit, S sy...

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 the technical field of new energy grid connection, particularly to an energy storage system configuration method considering power grid frequency support requirements. The method is characterized by mainly comprising two parts of system maximum power increment solving and energy storage configuration, and comprises the following steps of: solving a maximum power incrementcapable of being borne by a system by taking a frequency change rate and a frequency deviation as limiting conditions; determining the output power and capacity of the energy storage system accordingto the maximum power increment; and finally carrying out virtual inertia configuration on the basis that the energy storage system grid-connected inverter adopts a three-order active support control strategy. According to the invention, the configuration method can flexibly govern the power flow discharge of the energy storage system, and effectively solves the problem of lack of inertia support and frequency modulation capability in the synchronous power grid under high wind power penetration.

Description

technical field [0001] The invention relates to the technical field of new energy grid connection, in particular to an energy storage system configuration method considering the frequency support requirements of the grid. Background technique [0002] With the expansion of power system scale and the increase of wind power penetration rate, power fluctuations caused by factors such as load switching and wind power output fluctuations and uncertainties become more frequent and severe. In addition, power electronic devices separate the rotating equipment of wind turbines from the frequency of the power grid, resulting in a shortage of system inertia and frequency regulation capacity, and the stable operation of the power grid is facing great challenges. [0003] Compared with the traditional frequency regulation method that reduces the power generation of wind turbines, the energy storage system (ESS) represented by the chemical battery energy storage power station has the char...

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): H02J3/28H02J3/32H02J3/24
CPCH02J3/28H02J3/32H02J3/24H02J3/241H02J2203/10Y02E70/30
Inventor 刘洪波张崇孙同张书钰彭晓宇曲晟岐包津铭陈奇
Owner NORTHEAST DIANLI UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com