Predicting the technical impacts of high levels of small-scale embedded generators on low-voltage networks
- 1 December 2008
- journal article
- research article
- Published by Institution of Engineering and Technology (IET) in IET Renewable Power Generation
- Vol. 2 (4), 249-262
- https://doi.org/10.1049/iet-rpg:20080012
Abstract
The anticipated high penetrations of small-scale embedded generators (SSEGs) on public low-voltage (LV) distribution networks are likely to present distribution network operators (DNOs) with a number of technical impacts relating to power quality, distribution system efficiency and potential equipment overloads. Impact studies need to be performed using suitable case study networks in order to evaluate the effects of SSEGs on LV distribution networks and quantify allowable SSEG penetration levels. The aim is to propose a methodology for predicting the technical impacts of SSEGs on LV networks without the need for developing a detailed computer-based model of the power system and simulating a range of operating scenarios. This methodology is drawn from an analysis of the key electrical characteristics that determine the response of LV networks to the addition of SSEGs, focusing on the following technical aspects: (i) voltage regulation, (ii) voltage rise, (iii) voltage unbalance, (iv) cable and transformer thermal limits and (v) network losses. The analysis is carried out on a UK generic and a European generic LV network and simulation results for both networks are presented and discussed. The proposed methodology is then applied to an existing public UK LV network operated by E.ON UK Central Networks, indicating a good agreement between predicted and simulation results.Keywords
This publication has 9 references indexed in Scilit:
- Distributed control approach for small-scale energy zonesProceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 2008
- Network Power-Flow Analysis for a High Penetration of Distributed GenerationIEEE Transactions on Power Systems, 2007
- Investigation of the reverse power flow requirements of high penetrations of small-scale embedded generationIET Renewable Power Generation, 2007
- Operation of a Multiagent System for Microgrid ControlIEEE Transactions on Power Systems, 2005
- An Agent Concept for Managing Electrical Distribution NetworksIEEE Transactions on Power Delivery, 2005
- Integration of dispersed generation on distribution networks-impact studiesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Small-scale embedded generation effect on voltage profile: an analytical methodIEE Proceedings - Generation, Transmission and Distribution, 2003
- Dispersed generation impact on distribution networksIEEE Computer Applications in Power, 1999
- Benefits of performing unbalanced voltage calculationsIEEE Transactions on Industry Applications, 1988