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© 2019 MOELLER & POELLER ENGINEERING LTD

G5/4, P28, P29 studies

Grid owners may request power quality studies prior to allowing connection of new generation or loads to their network. In the UK, these studies are known by the Engineering Recommendation standards G5/4 (harmonics), G5/5 (new harmonic standard) , P28 (rapid voltage change and flicker) and P29 (voltage unbalance).
MPE has substantial expertise in this area — we have completed numerous power quality studies, for sites that are only a few megawatts through to a 2 GW generating plant connected at 400 kV. Our services include:

harmonic studies as per G5/4, G5/5, IEC 61000 and IEEE 519
assessment of flicker and rapid voltage changes in accordance to ER P28, IEC 61000 and IEEE 1789
assessment of voltage unbalance as per ER P29

let's talk

If you have a question about our services, or would like to talk about how we can help with one of your projects then please use the form below, or use the email addresses on our say hello page. Both methods send your query to the same location, where we will find the right person to respond to you as soon as possible: