Abstract
Distributed Energy Resources, located in the distribution network are becoming a key component of the power networks’ transformation. The proactive management of these resources can influence positively the transition of the energy system, leading to the higher integration of renewable resources. This paper proposes a new methodology to approximate the flexibility of an active distribution grid at the point of interconnection with the transmission system. A geometric approach is proposed to capture both active and reactive power flexibility. The problem is formulated as an AC-optimal power flow to ensure no violation of the constraints in the distribution grid. The benefits of the proposed methodology are demonstrated on a modified 18-bus distribution system.
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