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Keywords
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Distribution network, Grid security , Networked-microgrids
Resiliency enhancement , Resiliency operation , Uncertainty
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Abstract
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By increasing the penetration of distributed energy resources (DERs) and
developing the microgrids (MGs) due to its implication for the existing circumstance of power system, Networked-Microgrid (NMG) approach is becoming an
important issue in smart distribution grids. On the other hand, low probability but
extreme events like natural disasters or the fuel interruption can threaten the grid
security. For this end resiliency problem is discussed in this paper for the MMG
structure of distribution network. The main objective of this chapter is to globally
reach the minimum cost operation of microgrids in normal condition while meeting
the adequacy in resiliency operation mode. The dispatchable unit status, energy
storage and adjustable loads scheduling and the energy trade status between
microgrids in each hour are evaluated with stochastic modeling of load and
renewable power generations. It is of important because these microgrids have
energy exchange between each other under control of energy management system
(EMS) in addition of energy drawing from main grid. This can prepare an option to
count on DER capacity of other microgrids in resiliency mode of system operation
when the main grid is disconnected.
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