Journal ArticleDOI
Distribution power flow management utilising an online Optimal Power Flow technique
Michael Dolan,Euan Davidson,Ivana Kockar,Graham Ault,Stephen McArthur +4 more
- Vol. 27, Iss: 2, pp 790-799
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TLDR
In this article, an application of the Optimal Power Flow (OPF) technique for automatic power flow management (PFM) to manage thermal constraints in distribution networks is presented.Abstract:
Summary form only given. This paper describes the current connection regime for distributed generation (DG) in the UK and presents a novel application of the Optimal Power Flow (OPF) technique for automatic power flow management (PFM) to manage thermal constraints in distribution networks. OPF formulations have been used, in an offline mode, as a power system planning tool for several years. The novel implementation of OPF for `corrective' PFM in an online operational mode, for MV distribution networks, is presented and tested in this paper. The authors demonstrate, through simulations conducted on a commercially available substation computer, that such an application of OPF can represent first on, last off generator connection agreements that reflect the current principles of access in the UK. Two case study networks, a 33kV and an 11kV, provide the basis for assessment of the OPF-based PFM algorithm in terms of computation time to arrive at a solution in the event of a network thermal excursion and the level of DG curtailment necessary to meet network thermal limits. Assessments are made and fully discussed of the suitability for an OPF-based approach for distribution network management within an online network control scheme including discussion of the important consideration of control robustness.read more
Citations
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Journal ArticleDOI
A Centralized Energy Management System for Isolated Microgrids
TL;DR: Using the model predictive control technique, the optimal operation of the microgrid is determined using an extended horizon of evaluation and recourse, which allows a proper dispatch of the energy storage units.
Journal ArticleDOI
Dynamic Optimal Power Flow for Active Distribution Networks
TL;DR: In this article, a framework for modeling energy technologies with inter-temporal characteristics in an active network management (ANM) context is presented, which includes the optimization of non-firm connected generation, principles of access for nonfirm generators, energy storage, and flexible demand.
Journal ArticleDOI
Assessing the Potential of Network Reconfiguration to Improve Distributed Generation Hosting Capacity in Active Distribution Systems
TL;DR: This work proposes an algorithm to break-down the large problem size when many periods have to be considered, and the effectiveness of the approach and the significant benefits obtained by static and dynamic reconfiguration options in terms of DG hosting capacity are demonstrated using a modified benchmark distribution system.
Journal ArticleDOI
Model Predictive Control of Voltages in Active Distribution Networks
TL;DR: A centralized control scheme to regulate distribution network voltages in the presence of high penetration of distributed generation using a linear model to predict the behavior of the system and the optimization is solved using quadratic programming.
Journal ArticleDOI
Planning Active Distribution Networks Considering Multi-DG Configurations
TL;DR: In this article, the impact of multiple DG configurations on the potential of active network management (ANM) schemes is firstly investigated, and a multi-configuration multi-period optimal power flow (OPF)-based technique (MMOPF) is proposed to assess the maximum DG capacity under ANM schemes considering variability of demand and generation profiles (multi-period scenarios), and different operational status of DG units (multiconfigurations).
References
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Trade and Industry
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Journal ArticleDOI
Optimal Power Flow Solutions
TL;DR: A practical method is given for solving the power flow problem with control variables such as real and reactive power and transformer ratios automatically adjusted to minimize instantaneous costs or losses by Newton's method, a gradient adjustment algorithm for obtaining the minimum and penalty functions to account for dependent constraints.
Journal ArticleDOI
Distribution Network Capacity Assessment: Variable DG and Active Networks
TL;DR: In this paper, the authors proposed a multi-period AC optimal power flow (OPF)-based technique for evaluating the maximum capacity of new variable distributed generation able to be connected to a distribution network when ANM control strategies are in place.
Journal ArticleDOI
Optimal power flows
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