Societal and economic challenges are driving the transition toward a sustainable, resilient, communication-reliant, and decentralized power grid. Microgrids tick all the boxes to become the building blocks of these modern grids. However, there are also increasing concerns about how this transition may ultimately impact the operation and stability. This chapter investigates the impact of grid-connected microgrids on power system dynamics under various scenarios, and evaluates their role in the energy market, and their ability to provide frequency services. The scenarios consider greedy approaches, i.e., microgrids that operate their resources, in particular their energy storage system, to maximize their revenues based on the variation of the electricity price; altruistic approaches, i.e., microgrids that provide frequency control as ancillary service to the grid; and a stochastic control that aims at blending both the greedy and altruistic approaches. Extensive realistic simulations and sensitivity analysis are carried out in a modified IEEE 39-bus transmission grid and show that the biggest impact on the dynamic performance of the system is obtained when the microgrids are freely allowed to operate in the market to greedily maximize their revenues.
Dynamics and control of grid-connected microgrids
Dudkina E.;Crisostomi E.;Ferraro P.;
2024-01-01
Abstract
Societal and economic challenges are driving the transition toward a sustainable, resilient, communication-reliant, and decentralized power grid. Microgrids tick all the boxes to become the building blocks of these modern grids. However, there are also increasing concerns about how this transition may ultimately impact the operation and stability. This chapter investigates the impact of grid-connected microgrids on power system dynamics under various scenarios, and evaluates their role in the energy market, and their ability to provide frequency services. The scenarios consider greedy approaches, i.e., microgrids that operate their resources, in particular their energy storage system, to maximize their revenues based on the variation of the electricity price; altruistic approaches, i.e., microgrids that provide frequency control as ancillary service to the grid; and a stochastic control that aims at blending both the greedy and altruistic approaches. Extensive realistic simulations and sensitivity analysis are carried out in a modified IEEE 39-bus transmission grid and show that the biggest impact on the dynamic performance of the system is obtained when the microgrids are freely allowed to operate in the market to greedily maximize their revenues.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
