Modeling and Control of an Islanded Campus Microgrid with Coordinated CHP and PV Systems

Jimiao Zhang, Jie Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

On-site power generation systems, integrating combined heat and power (CHP) and solar photovoltaics (PVs), could bring significant energy cost savings to the electricity consumers and reduce carbon emissions. This paper presents detailed modeling of an existing gas-turbine-based 5-MVA CHP unit located on a university campus. In addition, integration of a 10-MW solar farm into the campus microgrid is investigated. A virtual synchronous generator (VSG) approach is proposed to control the PV system as a double-stage PV-VSG, which emulates the rotational inertia of a conventional synchronous generator (SG) using only the dc-link capacitor. The coordinated control of the two generation facilities is studied when the microgrid is in islanded mode. The large capacity of the PV farm is leveraged to serve part of the campus baseload demand when sufficient solar power is available, while the CHP is on hot standby. When the grid frequency stabilizes, the CHP will be brought online for load sharing. The underfrequency load shedding (UFLS) is also in place to arrest the potential rapid frequency fall. The simulated campus microgrid system is developed in MATLAB/Simulink to verify the modeling accuracy and control performance.

Original languageEnglish (US)
Title of host publication2021 IEEE Power and Energy Society General Meeting, PESGM 2021
PublisherIEEE Computer Society
ISBN (Electronic)9781665405072
DOIs
StatePublished - 2021
Externally publishedYes
Event2021 IEEE Power and Energy Society General Meeting, PESGM 2021 - Washington, United States
Duration: Jul 26 2021Jul 29 2021

Publication series

NameIEEE Power and Energy Society General Meeting
Volume2021-July
ISSN (Print)1944-9925
ISSN (Electronic)1944-9933

Conference

Conference2021 IEEE Power and Energy Society General Meeting, PESGM 2021
Country/TerritoryUnited States
CityWashington
Period7/26/217/29/21

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering

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