عنوان

Communication-based Distributed Control in Microgrids and Networked Microgrids

Number

TL50871

.Language of Text, Soundtrack etc

انگلیسی

Title Proper

Communication-based Distributed Control in Microgrids and Networked Microgrids

General Material Designation

[Thesis]

First Statement of Responsibility

Zhou, Quan

Subsequent Statement of Responsibility

Shahidehpour, Mohammad

Name of Publisher, Distributor, etc.

Illinois Institute of Technology

Date of Publication, Distribution, etc.

2019

Text of Note

156 p.

Dissertation or thesis details and type of degree

Ph.D.

Body granting the degree

Illinois Institute of Technology

Text preceding or following the note

2019

Text of Note

Microgrids representing localized small-scale power systems are capable of operating as self-controlled entities, which cluster and manage distributed energy resources (DERs) and other smart devices within a defined electrical boundary. By utilizing locally available resources, microgrids reduce their dependencies on the utility grid, which provide more reliable, resilient, and economic power services to local customers. Geographically close microgrids can be connected for forming a networked microgrid system, which provides additional operational flexibility and further enhances the system reliability and resilience by sharing available DERs. Considering variable and controllable characteristics of DERs, locally available DERs need to be appropriately coordinated and controlled to respond to changing loads. The proliferation of microgrids will make it inevitable to rely on communication systems among microgrids for realizing the coordinated control of participating DERs in networked microgrid systems. The networked microgrid system is considered as a cyber-physical system (CPS) which requires sophisticated network technologies to cope with the massive adaption of communication, computation and control devices. Conventionally, a networked system has been managed by a centralized master controller, which processes the data collected from participating DERs and sends operational set points to each participant. Compared with the centralized control strategies, distributed control is more advantageous for connecting participating DERs. The connectivity of distributed control system (i.e., meshed network) is higher than that of a centralized structure (i.e., star network), in particular when critical circumstances are encountered in which some of the network connections are lost. Also, the distributed control system enables parallel data processing and control, which speeds up the networked system response to variable DERs and loads and promote economic merits. The communication-based distributed control strategies have proven to demonstrate higher reliability, resilience, and scalability while possessing lower implementation costs as compared with centralized control strategies. We have proposed several communication-based distributed control strategies for realizing the coordinated operation of participating microgrids and DERs, which can be applied to achieve various operational objectives, including proportional active power sharing, DER plug-and-play capability, seamless microgrid islanding, and resynchronization operations, and optimal economic operations. The benefits and challenges of communication-based distributed control strategies in networked microgrid systems are discussed and addressed in our work. Extensive case studies have been conducted in this thesis to validate the effectiveness of the proposed communication-based distributed controller design.

Subject Term

Electrical engineering

Subject Term

Electromagnetics

Zhou, Quan

Shahidehpour, Mohammad

Illinois Institute of Technology

Electronic name

p

[Thesis]

276903

a

Y