Primary Frequency Control Provision by Distributed Energy Resources in Active Distribution Networks
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Date
2021
Publication Type
Conference Paper
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yes
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Abstract
The rising share of renewable energy sources in electricity grids has strongly impacted the operation of both transmission and distribution systems. With the decommissioning of synchronous generators, the transmission systems are becoming less resilient to disturbances, while the proliferation of Distributed Energy Resources (DERs) in distribution networks has opened new possibilities for distribution system operators, enabling them to support the transmission system by offering ancillary services. This paper proposes a centralized controller for provision of Primary Frequency Control (PFC) by aggregations of DERs in active distribution networks. The controller aims to find optimal setpoint adjustments for DERs to regulate the power flow at the transmission system interconnection according to PFC provision requirements. At the heart of the proposed method lies a multi-period optimal power flow formulation, which accommodates different timescale dynamics of the employed DERs, as well as the network constraints. The active power required for provision of PFC is calculated using a recently developed frequency prediction model. Simulation results obtained from a dynamic model of the IEEE 33-bus system demonstrate the effectiveness of the proposed scheme.
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Publication status
published
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Book title
2021 IEEE Madrid PowerTech
Journal / series
Volume
Pages / Article No.
9494764
Publisher
IEEE
Event
14th IEEE PowerTech Conference (PowerTech 2021)
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Methods
Software
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Subject
Active distribution networks; Distributed energy resources; Primary frequency control; Low-inertia systems
Organisational unit
09481 - Hug, Gabriela / Hug, Gabriela