Journal ArticleDOI
Inverter-Less Hybrid Voltage/Var Control for Distribution Circuits With Photovoltaic Generators
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TLDR
The proposed hybrid voltage/var control architecture for distribution systems with a high PV penetration can optimize the system operation and is effective in voltage regulation with PV generators.Abstract:
This paper proposes a hybrid voltage/var control (VVC) architecture for distribution systems with a high PV penetration. The architecture consists of two control loops: coordinated normal control loop and uncoordinated transient cloud movement control loop. In the first loop, hourly dispatches are scheduled for on-load tap changer (OLTC), capacitor banks (CBs), and static var compensators (SVCs) based on forecasted load and PV power output so as to minimize power losses and voltage deviations. The second loop is triggered when large variations of PV power output caused by rapid cloud movement happen. All SVCs and CBs become self-controlled based on local voltage measurements with the single control objective to minimize voltage deviations. SVCs will operate firstly to flatten the voltage profile. If SVCs fail, CBs will switch to provide reactive power support. A time-adaptive delay is applied to each CB to avoid overcompensation. Case studies show the proposed method can optimize the system operation and is effective in voltage regulation with PV generators.read more
Citations
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Journal ArticleDOI
Coordinated Energy Management of Networked Microgrids in Distribution Systems
TL;DR: A novel control strategy for coordinated operation of networked microgrids (MGs) in a distribution system considered as a stochastic bi-level problem with the DNO in the upper level and MGs in the lower level to achieve the equilibrium among all entities.
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Robust Optimization Based Optimal DG Placement in Microgrids
TL;DR: Compared with conventional MG planning approaches, the proposed model is more practical in that it fully considers the system uncertainties and only requires a deterministic uncertainty set, rather than a probability distribution of uncertain data which is difficult to obtain.
Journal ArticleDOI
Distribution Locational Marginal Pricing (DLMP) for Congestion Management and Voltage Support
TL;DR: In this paper, a day-ahead market-clearing model for smart distribution systems is proposed, through which the distribution locational marginal pricing (DLMPs) for both active power and reactive power are determined.
Journal ArticleDOI
Multi-Timescale Coordinated Voltage/Var Control of High Renewable-Penetrated Distribution Systems
TL;DR: In this article, a multi-timescale coordinated stochastic voltage/var control method for high renewable-penetrated distribution networks is proposed, which utilizes multiple devices to counteract uncertain voltage fluctuation and deviation.
Journal ArticleDOI
Distributed Generation Hosting Capacity Evaluation for Distribution Systems Considering the Robust Optimal Operation of OLTC and SVC
TL;DR: In this paper, the authors proposed an MHC evaluation method while considering the robust optimal operation of on load tap changers (OLTCs) and static var compensators (SVCs) in the uncertain context of DG power outputs and load consumptions.
References
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Radial distribution test feeders
TL;DR: In this paper, the authors present an updated version of the same test feeders along with a simple system that can be used to test three-phase transformer models, which is a common set of data that could be used by program developers and users to verify the correctness of their solutions.
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Optimal sizing of capacitors placed on a radial distribution system
M.E. Baran,F.F. Wu +1 more
TL;DR: In this paper, a nonlinear programming problem for capacitors placed on a radial distribution system is formulated and a solution algorithm is developed to find the optimal size of capacitors so that the power losses will be minimized for a given load profile while considering the cost of the capacitors.
Journal ArticleDOI
Options for Control of Reactive Power by Distributed Photovoltaic Generators
TL;DR: In this article, the authors discuss and compare via simulation various design options for control systems to manage the reactive power generated by these inverters, and find that local control schemes are able to maintain voltage within acceptable bounds.
Journal ArticleDOI
Impact of increased penetration of photovoltaic generation on power systems
TL;DR: In this paper, the impact of increased penetration of photovoltaic (PV) systems on static performance as well as transient stability of a large power system, in particular the transmission system, is examined.
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Power System Modelling and Scripting
TL;DR: This book is for all students and researchers that are looking for a quick reference on power system models or need some guidelines for starting the challenging adventure of writing their own code.