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Reference Number NIA_SPT_1506
Title Development of a Standard 33kV Damped Harmonic Filter Design
Status Completed
Energy Categories OTHER POWER and STORAGE TECHNOLOGIES(Electricity transmission and distribution) 100%;
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 ENA Smarter Networks
Start Date 01 November 2015
End Date 01 May 2017
Duration 18 months
Total Grant Value £120,000
Industrial Sectors Power
Region Scotland
Programme Network Innovation Allowance
Investigators Principal Investigator Project Contact , SP Energy Networks (100.000%)
Web Site
Objectives Reduce costs by deploying a standardised design Improve the management of harmonic voltage levels on transmission networks Substantially reduce the risk of harmonic non-compliance Provide an increased level of certainty regarding harmonic mitigation requirements to developers Production of Stage I final report Production of Stage II final report - If Stage I suggests that a standard harmonic filter is feasible
Abstract A number of problems related to harmonic voltage compliance (based on Engineering Recommendation G5/4) are frequently encountered by SP Energy Networks (SPEN): An increasing number of generators are being connected via long cable circuits. This type of connection often leads to resonant conditions that result in amplification of existing background voltage harmonics. This effect is often compounded by extensive wind farm cabling. At the time when a connection offer is made, not enough information is available about the cable circuit, the wind farm layout or the characteristics of future adjacent connections to make an assessment of the harmonic performance of the network. Note that the connection offer timescales are also usually insufficient to carry out detailed harmonic studies. When designing harmonic filters, a large number of network outages, demand conditions and possible future changes have to be considered. This makes design of suitable harmonic filters difficult, requiring extensive harmonic studies. To deal with these issues, the development of a standard harmonic filter design is proposed. I.e. a harmonic filter building block that can be widely deployed is envisaged. It is recognised that such a standard filter design will not be optimal for each application. However, it is anticipated that the cost and efficiency penalties associated with this this will be eliminated by the following advantages: Extensive filter design studies and measurement (or estimation) of background harmonics are not required on a site by site basis. A standard filter design can easily be incorporated in a design in transmission connection offer timescales (the approximate cost and space requirements are known). Harmonic filter requirements can be estimated early in a project, reducing the risk of non-compliance to SPEN and developers. It is likely that the requirement for a filter (and the number of filter blocks) can be assessed on the basis of some design rules and/or some simplified studies. The risks and confidentiality problems associated with analysing the harmonic performance of neighbouring or interacting connections are reduced. A good standard filter design would be relatively immune to network outages and network changes, reducing the risk of future non-compliance. Harmonic performance can be improved by installing additional standard filter blocks, if required.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 09/08/18