This study shows modelling developed during the first year of the SmartNet project. In particular, it presents a mathematical model for aggregation of curtailable generation and sheddable loads. The model determines the quantity and the cost of the flexibility provided by the flexible resources based on their physical and dynamic behaviours. The model also proposes a bidding strategy in order to translate the aggregated behaviour into market bids. 2 Flexibility intervals 2.1 Flexibility of a single device 2.1.1 Curtailable generation: A collection of wind generators, numbered from 1 to n G would be a good example of curtailable 24th International Conference & Exhibition on Electricity Distribution (CIRED)
Active Network Management (ANM) has been developed over the past decade in the UK as a potential solution to facilitate integration of Distributed Generation (DG) in distribution networks. It is used to manage network limits and allows significantly cheaper and faster connections for DGs, compared to the network reinforcement. However, ANM can help with the DG penetration only to a certain extent as new DG connections in constrained networks will result in curtailment. This paper investigates the levels of energy storage and locations of its placement in reducing curtailment of DGs and improving utilisation of distribution networks with ANM solutions. It evaluates and compares energy storage values of energy storage capacity at different locations, and using the real network and wind data provided by SP Energy Networks (SPEN) Accelerating Renewable Connection (ARC) project.
Abstract-With the increasing number of distributed generation connections to distribution networks, the need for better understanding of the distribution network constraints becomes crucial. As distribution networks have not been traditionally designed for two-way power flow, the reverse power flows due to the integration of distributed generation changes voltage profiles and can create significant network management issues related to both thermal and voltage limits. Whilst a large body of theory exists on the management of voltage profiles and the integration of distributed generation into voltage-constrained feeders, there has been limited real world application of these methods to date, in part because network operators are reluctant to undertake significant changes that may affect the reliability of their network. This paper provides a case study of three adjustments to existing management of an 11kV feeder that are simple and feasible to implement and evaluates their impact on connection capacity for distributed generation including the importance of location. These adjustments are: increased operational upper-voltage levels, simple demand-management, and non-firm connections to manage local voltage constraints.
This version is available at https://strathprints.strath.ac.uk/57988/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. Accelerating Renewable Connections through Coupling Demand and Distributed Generation Milana Plecas, Simon Gill and Ivana KockarDepartment of Electronic and Electrical Engineering University of Strathclyde Glasgow, UK milana.plecas; simon.gill; ivana.kockar {@strath.ac.uk} Abstract-The objective of this paper is to investigate the options for using local demand to accelerate the connection of renewable Distributed Generation (DG) capacity. It presents a range of architectures for operating Distributed Energy Systems (DESs) that contain local demand and distributed generation. The concept of a DES is that demand is supplied by local DG either using privately owned distribution assets or a public distribution network owned by a Distribution Network Operator (DNO). Operation of a DES can help manage variability in DG output, reduce curtailment in Active Network Management (ANM) schemes, and assist the DNO in managing network constraints. They also provide a move towards local trading of electricity with potential financial and non-financial benefits to both distributed generators and local demand customers.
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