Networked Microgrids for Improving Economics and Resiliency

Conference · Wed Aug 01 00:00:00 EDT 2018

DOI:https://doi.org/10.1109/PESGM.2018.8585929· OSTI ID:1468238

Liu, Guodong ^[1]; Ollis, Ben ^[1]; Xiao, Bailu ^[1]; Xiaohu, Zhang ^[2]; Tomsovic, Kevin ^[2]

---

1. ORNL
2. University of Tennessee, Knoxville (UTK)

In this paper, we propose networked microgrids to facilitate the integration of variable renewable generation and improve the economics and resiliency of electricity supply in microgrids. A new concept, probability of successful islanding (PSI) is used to quantify the islanding capability of a microgrid considering the uncertainty of renewable energy resources and load as well as exchanged power at PCC. With the goal of minimizing the total operating cost while preserving user specified PSI, a chance-constrained optimization problem is formulated for the optimal scheduling of both individual microgrid and networked microgrids. Numerical simulation results show significant saving in electricity cost can be achieved by proposed networked microgrids without compromising the resiliency. The impact of correlation coefficients among the renewable generation and load of adjacent microgrids has been studied as well.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE; USDOE Office of Electricity Delivery and Energy Reliability (OE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1468238
• Country of Publication: United States
• Language: English