Journal ArticleDOI
Impact of widespread photovoltaics generation on distribution systems
Murray Thomson,David Infield +1 more
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In this paper, the authors performed unbalanced three-phase load-flow analysis on an entire feeder within a time-domain simulation framework using load and generation data at 1 minute intervals.Abstract:
Prompted by the need for clean energy sources, increasing numbers of photovoltaic (PV) generators are being connected to electricity distribution systems around the world. There is thus a growing imperative to understand and quantify the technical impact that high penetrations of such generators may have on the operation and performance of electricity distribution systems. Detailed simulations of a very high penetration of PV within a typical UK urban distribution network (11 kV, 400 V and 230 V) are reported. The study performed unbalanced three-phase load-flow analysis on an entire feeder within a time-domain simulation framework using load and generation data at 1 minute intervals. The results indicate that even at very high penetrations of PV, network voltage rises are small and unlikely to cause problems. Effects on network power flows and losses are also quantified and discussedread more
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Grid-connected photovoltaic power systems: Technical and potential problems—A review
TL;DR: In this paper, the importance of grid-connected PV system regarding the intermittent nature of renewable generation, and the characterization of PV generation with regard to grid code compliance is investigated and emphasized.
Journal ArticleDOI
A high-resolution stochastic model of domestic activity patterns and electricity demand
Joakim Widén,Ewa Wäckelgård +1 more
TL;DR: In this article, the authors present a modeling framework for stochastic generation of high-resolution series of such data, which generates both synthetic activity sequences of individual household members, including occupancy states and domestic electricity demand based on these patterns.
Journal ArticleDOI
Impact of High PV Penetration on Voltage Profiles in Residential Neighborhoods
TL;DR: In this paper, a simulation study was performed to investigate potential voltage rise issues in the network up to 11.25% total PV penetration in the feeder and LV transformer capacity penetration up to 75%.
Journal ArticleDOI
Photovoltaic penetration issues and impacts in distribution network - A review
TL;DR: In this article, a comprehensive overview on important issues affecting the distribution system as a result of PV penetration is presented, including voltage fluctuation, voltage rise, voltage balance, and harmonics and their effect on the system.
Journal ArticleDOI
A review of key power system stability challenges for large-scale PV integration
TL;DR: In this article, the authors extensively review the technical challenges associated with the integration of large-scale PV into the power system and discuss the technical solutions to overcome these challenges, and summarize the research findings about the technical solution to overcome power system stability challenges regarding the large scale PV integration into the transmission and subtransmission or medium voltage distribution system.
References
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Journal ArticleDOI
Automatic voltage control relays and embedded generation. I
TL;DR: In this paper, the authors present a review of the use of voltage-control relays typically in the UK today: master-follower line-drop-compensation, true-circulating-current detection and negative-reactance compounding.
Dissertation
Removing barriers to embedded generation : a fine-grained load model to support low voltage network performance analysis
TL;DR: In this paper, a fine-grained domestic load model has been constructed with a three layered approach to provide per-consumer, 1-minute averaged loads on an end-use basis.