Multi-photovoltaic solar-diesel hybrid system coordination control method based on disturbance observer

A disturbance observer and hybrid system technology, applied in the direction of total factory control, total factory control, electrical program control, etc., can solve problems such as photovoltaic system active power output fluctuations, frequency deviation, etc.

Inactive Publication Date: 2013-04-03
SHANGHAI UNIVERSITY OF ELECTRIC POWER
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The present invention is aimed at the independent operation of multi-photovoltaic hybrid system, in order to reduce the inconsistent output of each photovoltaic system caused by different lighting angles and capacities, so that the active power output of the photovoltaic system fluctuates and generates large fluctuations. In order to solve the problem of frequency deviation, a coordinated

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
  • Multi-photovoltaic solar-diesel hybrid system coordination control method based on disturbance observer
  • Multi-photovoltaic solar-diesel hybrid system coordination control method based on disturbance observer
  • Multi-photovoltaic solar-diesel hybrid system coordination control method based on disturbance observer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0060] In the following, the present invention will be further described from the aspects of model establishment, design principle, design method, and validity verification.

[0061] (1) The mathematical model of the independent operation of the hybrid solar-diesel system considering multi-photovoltaic access:

[0062] The independent photovoltaic and diesel hybrid power system mainly includes photovoltaic power generation system and diesel engine system. The structural block diagram and dynamic model of the system are as follows: figure 1 , figure 2 shown.

[0063] The solar cell module is of great significance to the design of the inverter and control system, and its equivalent circuit is as follows image 3 shown. Conventional I-V characteristics of solar cell modules, saturation current of solar cell modules With the change of temperature, the internal resistance current of the photovoltaic cell can be expressed by the following formula:

[0064]

[0065]

[...

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 multi-photovoltaic solar-diesel hybrid system coordination control method based on a disturbance observer. A solar-diesel hybrid system comprises a diesel power generation system and a multi-photovoltaic system which contains a center reference command and a local reference command, a loading value in the system is estimated by the disturbance observer, changed values of loads in a hybrid power system are applied to setting of output power reference values of various photovoltaic systems, the photovoltaic output power can be timely adjusted according to changes of the loads, and frequency deviation can be reduced. Effects of the method are compared with those of a multi-photovoltaic power supply system with photovoltaic systems which are not coordinated and totally use maximum power to perform tracing control, a simulation result proves that the method can reduce the frequency deviation of the solar-diesel hybrid system, and each photovoltaic system can obtain high power output.

Description

technical field [0001] The invention relates to a control technology of a photovoltaic and diesel hybrid system, in particular to a coordinated control method for a multi-photovoltaic photovoltaic and diesel hybrid system based on an interference observer. Background technique [0002] Photovoltaic new energy has attracted more and more people's attention due to its advantages of no pollution, no noise, inexhaustible supply, etc. [1-2]. The light-diesel hybrid power supply system [3] is an important way to solve the power consumption in remote areas of our country. Because photovoltaic new energy is affected by weather changes, its output power has the characteristics of volatility, randomness, and intermittency, especially when multiple photovoltaic systems and diesel power generation systems are jointly powered, the fluctuation of power output and the continuous change of load in the system It may cause active power imbalance and large frequency deviation of the hybrid po...

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): G05B19/418
CPCY02P90/02
Inventor 米阳符杨赵晋斌韩云昊包晓炜
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