go to top scroll for more


Projects: Projects for Investigator
Reference Number NIA_SPT_1610
Title Innovative Approach for Transmission Harmonics Issues
Status Completed
Energy Categories Renewable Energy Sources(Wind Energy) 50%;
Other Power and Storage Technologies(Electricity transmission and distribution) 50%;
Research Types Applied Research and Development 100%
Science and Technology Fields ENGINEERING AND TECHNOLOGY (Electrical and Electronic Engineering) 100%
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Project Contact
No email address given
SP Energy Networks
Award Type Network Innovation Allowance
Funding Source Ofgem
Start Date 01 January 2017
End Date 01 January 2018
Duration 12 months
Total Grant Value £95,000
Industrial Sectors Power
Region Scotland
Programme Network Innovation Allowance
Investigators Principal Investigator Project Contact , SP Energy Networks (100.000%)
Web Site http://www.smarternetworks.org/project/NIA_SPT_1610
Objectives WP1: Develop Grid Model A model of the Grid, incorporating aggregated wind farm models, and a report detailing the assumptions of this model. WP2: Harmonic Impedance Scans Technical report to be generated detailing Frequency scan results, and filter solutions. WP3: Developing Harmonic Limits Technical report detailing the results of frequency scans per wind farm. WP4: Detailed Harmonic Filter Designs Technical report detailing the specification for each harmonic filter. WP5: Performance Review Final report collecting all progress to date, critical assessment of simulation accuracy with regard to measurements, and final conclusions on the project. The delivery of the above objectives, within budget and within agreed timelines, as is reasonable depending on the knowledge at this stage of the development phase. The project will be managed within SPEN applying due diligence and best practices where appropriate. The staged outcomes will include reports and specifications available for other licensees.
Abstract This is the second stage of a project looking at harmonic filters on the transmission network. This follows on from a feasibility study (NIA_SPT_1506) which looked at the optimisation of the location and size of harmonic filters across a section of the network in a co-ordinated manner. Harmonic Filtering has been previously looked after by individual developers, and this project will make good contribution so that customers can made reduced investment to safeguard the quality and standards of electricity supply. SPEN is currently developing an extensive network in South West Scotland for the connection of a number of windfarms. The harmonic performance of this network has to be evaluated with the aim of: a) Developing a coordinated, efficient and cost-effective harmonic filtering solution. b) Setting harmonic emission limits for each windfarm. c) Substantially reducing the risk of harmonic non-compliance for both SPEN and windfarm developers. The extensive use of cables in the transmission and windfarm networks indicates a risk of lower-order harmonic resonances in the network. It is expected that the high resulting voltage gain factors will dictate the installation of a number of harmonic filters, even if the background harmonics in the existing network are within acceptable limits and the harmonic emissions from the windfarms are low. An optimised harmonic filtering solution may require installation of filters on the transmission network and/or the windfarm connection points. It must be pointed out that some uncertainties around the final configuration of the network exist: Some generators may not go ahead with their connections or change the total power output of their windfarms. Further, the extent of the windfarm cabling on the various windfarms is unknown. SPEN will undertake a Harmonic study, which will lead to the development of a Harmonic filtering solution. This solution will be reviewed and refined, if necessary. Each windfarm to be connected will be assessed and have a harmonic specification prepared, and the existing background harmonic measurements will be assessed. Finally, a technical specification for the harmonic filters will be prepared. While this project is carried out in the trial area (South-west Scotland), the outcome and specification will have direct impact on transmission reinforcement and planning.Note : Project Documents may be available via the ENA Smarter Networks Portal using the Website link above
Publications (none)
Final Report (none)
Added to Database 20/08/18