Load frequency control method of wind-diesel hybrid power system based on sliding mode control

A hybrid power system, load frequency control technology, applied in wind power generation, reducing/preventing power oscillation, single grid parallel feeding arrangement, etc., can solve problems such as reducing wind power penetration rate and not fully utilizing new energy

Inactive Publication Date: 2015-09-30
SHANGHAI UNIVERSITY OF ELECTRIC POWER
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The document "Atsushi Yona, Hideomi Sekine, Chul-Hwan Kim, Output power control for large wind power penetration in small power system, Renewable Energy, 2009" aimed at the single-domain wind-diesel hybrid power system, through the fuzzy control method to realize the wind power output power frequency adjustment, but this must reduce the penetration rate of wind power. Although the method is feasible, it does not make full use of new energy

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
  • Load frequency control method of wind-diesel hybrid power system based on sliding mode control
  • Load frequency control method of wind-diesel hybrid power system based on sliding mode control
  • Load frequency control method of wind-diesel hybrid power system based on sliding mode control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0067] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0068] (1) Mathematical model of wind-fired hybrid small power system

[0069] Establish a mathematical model of the wind power generation subsystem:

[0070] C p (λ,β)=c 1 (β)λ 2 +c 2 (β)λ 3 +c 3 (β)λ 4

[0071] c 1 ( β ) = c 10 + c 11 β ...

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 wind power and diesel hybrid electric power system load frequency control method based on sliding-mode control. The method comprises the following steps: (1) output power of a wind power generation subsystem serves as control input of a diesel engine subsystem, meanwhile, output power of the diesel engine subsystem is controlled by means of a sliding-mode control method based on a BP neural network observer, a system state equation is established, and the control input u (t) of the diesel engine subsystem in a hybrid electric power system is calculated through a sliding-mode controller; (2) the control input u2 obtained by means of calculation through the sliding-mode controller in the step (1) is used as a control instruction of the wind power generation subsystem, a PID variable pitch control method is adopted for controlling output power of a wind driven generator according to the control instruction, and frequency deviation of the whole hybrid electric power system is reduced. Compared with the prior art, the wind power and diesel hybrid electric power system load frequency control method based on sliding-mode control has the advantages of being high in control accuracy, capable of effectively reducing electric power system load frequency deviation, and the like.

Description

technical field [0001] The invention relates to a method for controlling the load frequency of a power system, in particular to a method for controlling the load frequency of a wind-fired diesel hybrid power system based on sliding mode control. Background technique [0002] In recent years, the pollution of the environment by traditional power generation forms such as thermal power has become increasingly serious, and in the context of the rapid depletion of traditional energy sources, new energy sources such as wind energy and solar energy have attracted more and more attention and research. However, areas rich in new energy resources are generally relatively remote, such as wind resources in islands and solar resources in Xinjiang are very rich. Due to the inconvenient transportation in remote areas and isolated islands, the large power grid cannot provide continuous power supply to them. In this way, these areas will be more equipped to vigorously develop and utilize ne...

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): H02J3/24H02J3/38
CPCY02E10/76
Inventor 米阳韩云昊包晓炜
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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