Flexibility‐based operational management of a microgrid considering interaction with gas grid

Abstract

Power systems have been undergoing significant restructuring as a result of increasing independently operated local resources. Consequently, new entities, i.e. microgrids (MGs), are developed, which facilitate the integration of local resources, specifically renewable energy sources (RESs), into the operation of power systems. Despite many benefits, the integration of RESs could cause severe rampings in the net-load, which would challenge the reliable operation of the system. Therefore, it seems essential that flexible local resources in an MG should be employed to provide flexibility services to the main grid, thus ensuring that ramping in the MG's net-load would meet the ramping capability in the upper-level system. Accordingly, this study aims to develop an energy management framework to schedule local resources in an MG considering system's ramping limits. In this regard, the interaction between electricity and gas grid as a potential future flexible resource for energy systems is considered in the developed scheme. Moreover, the chance-constrained methodology is employed to address the uncertainty associated with the operational management of RESs. Finally, the proposed energy management model is analysed from different perspectives to show the importance of the contribution of flexible local resources to the efficient improvement of the power system flexibility.

Distributed Transactive Framework for Congestion Management of Multiple-Microgrid Distribution Systems

“…Moreover, stochastic programming and CVaR index are utilized to manage the risk of future uncertain parameters. Furthermore, the convex OPF formulation is embraced form [33], [34] to model MG network's operational constraints. Finally, the resource scheduling of MGi for time interval t while taking into account future T time periods is modeled as follows:…”

A Novel Distributed Paradigm for Energy Scheduling of Islanded Multiagent Microgrids

“…In the proposed scheme, it is considered that agents would be able to possess ESSs to enhance their flexibility against high prices in the system. This would also increase the overall flexibility of the system [1]. In this regard, the operational cost of ESSs and their relative constraints could be modeled as ( 15) -( 18) [25].…”

“…Recently, the high integration of independently operated distributed energy resources (DERs) as well as the local systems' concerns regarding the independency from the upstream power grids have resulted in significant transformations in the operation and planning procedures of the local systems; i.e., microgrids (MGs). In this regard, MGs, as entities thriving at a rapid pace, facilitate the integration of the independently operated agents, which may have different types of local resources and consumption parameters, into power systems [1]. Although the expansion of MGs brings lots of advantages for the entire power system; it would result in the complexity in the energy management of local systems, which should be handled in an efficient manner [2].…”

Modeling and Quantification of Power System Resilience to Natural Hazards: A Case of Landslide

“…On the other hand, the increasing trend of integration of distributed energy resources (DERs) [25], as well as the introduction of microgrids, facilitate the islanded operation of the energy systems in case of grid's failure [26]. In other words, the areas which are at high risk of load curtailment in case of landslide happening could be operated as microgrids and reinforced by installation of DERs [27].…”