|Title:||Flexible battery storage system for smart grid|
|Advisors:||Xu, Zhao (EE)|
|Subject:||Smart power grids.|
Hong Kong Polytechnic University -- Dissertations
|Department:||Department of Electrical Engineering|
|Pages:||v, 53 pages : illustrations (some color)|
|Abstract:||As the energy and environmental problems become increasingly prominent nowadays, the distributed generation (DG) is undergoing a significant development all around the world. Microgrid is introduced in order to coordinate the contradiction between the large grid and distributed generators and to fully exploit the value and benefit that distributed generators bring to the grid and users. The grid-connected inverter plays a very important role between the grid and distributed generations, and has a critic influence in the interconnection performance of the distributed generations. This thesis concentrates on a control strategy and operation characteristics of an inverter-interfaced microgrid. The principles of P-f and Q-V droop control strategy were analyzed, the model structure designs and UI multiple feedback loop controller were given, and the models were established in Matlab/Simulink. The selection and design of model parameters were studied. With the implementation of the UI multiple feedback loop controller, the microgrid can export high-quality power under both grid-connected mode and isolated mode. When the utility fault occurs, the microgrid runs from grid-connected mode to islanding mode, and the designed controller will regulate the active and reactive power flow and enable power sharing between the paralleled micro sources in the microgrid. Also, the controller can make the conversion between different modes seamless. The simulation results show the validity of the proposed scheme.|
|Rights:||All rights reserved|
Files in This Item:
|b28183058.pdf||For All Users (off-campus access for PolyU Staff & Students only)||2.1 MB||Adobe PDF||View/Open|
As a bona fide Library user, I declare that:
- I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
- I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
- I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.
Please use this identifier to cite or link to this item: