Exploitation of Microgrid Flexibility in Distribution System Hosting Prosumers

Abstract

Increasing the penetration of renewables in prosumers' side brings about operational challenges in the distribution grid due to their variable and uncertain behavior. In fact, these resources have increased the distribution grid net load fluctuation during recent years. In this paper, the flexibilityoriented stochastic scheduling of a microgrid is suggested to capture the net load variability at the distribution grid level. In this scheduling, the flexibility limits are set to manage the net load fluctuation at a desirable level for the main grid operator. The uncertainties of load and renewables are considered, and their uncertainties are under control by the risk-averse strategy. Moreover, multi-period islanding constraints are added to the problem, preparing the microgrid for a resilient response to disturbances. The model is examined on a typical distribution feeder consisting of prosumers and a microgrid. The numerical results are compared for both flexibility-oriented and traditional scheduling of a microgrid in the distribution level. The proposed model reduces the net load ramping of the distribution grid using an efficient dispatch of resources in the microgrid. A sensitivity analysis is also carried out to show the effectiveness of the model.

Adaptation of High Spatio-Temporal Resolution Weather/Load Forecast in Real-World Distributed Energy-System Operation

“…ABM can be useful in studying various aspects of policy-making procedures. Numerous policies within the energy sector focus on finding ways to encourage investment in low-carbon technologies and flexibility options at minimal costs [109]. However, when these policies are made and put into practice, it is essential to take the perspective of actors into account for evaluating the effectiveness and efficiency of them [110,111].…”

Scenario-Based Stochastic Optimization for Energy and Flexibility Dispatch of a Microgrid

“…The impact of FSs in the economic energy scheduling of MGs was considered in [1], [6], [10], [11]. The concept of the flexibility envelopes is used in [6] to consider the feasibility region of the real-time operational flexibility of a MG in its optimal power dispatch, which is solved in receding (rolling) horizon (RH).…”

“…The power exchange with the main grid is assumed to be known per time step, thus the BES flexibility dispatch satisfies the MG needs to avoid the cost of dispatching diesel generators or curtailing load. A scenario-based stochastic optimization (SO) problem is solved for a grid-connected MG in [10], [11], where the problem integrates flexibility limits. In [10] these limits are time-varying and depend on the net consumption of the rest of customers connected to the same distribution feeder as the MG.…”

“…A scenario-based stochastic optimization (SO) problem is solved for a grid-connected MG in [10], [11], where the problem integrates flexibility limits. In [10] these limits are time-varying and depend on the net consumption of the rest of customers connected to the same distribution feeder as the MG. In [11], these limits are set by the DSO to minimize deviations from the approved power exchange schedule, which is treated as a baseline power profile.…”

Metodologia para despacho econômico de sistemas de energia offshore híbridos e isolados.

“…Additionally, by offering ancillary services like voltage and frequency support, microgrids contribute to the overall stability of the power system [120]. Microgrids can adapt swiftly to small disturbances, modify their operation to maintain stability, and even help the main grid recover after significant outages due to the employment of cutting-edge control and communication systems [120,121]. The integration of several DERs and microgrids, however, might also pose new difficulties for the stability and optimization of the power system [100,118].…”