This is a requirement!! All generators connected to the grid and installed before February 2018 with a G59 Protection Relay must have them updated by September 2022.
The main purpose for these changes is to ensure the reduction of unnecessary tripping by lowering the sensitivity of the RoCoF, resulting in additional stability to the grid. All owners of generation that have been installed and connected to the network before February 2018 must comply with the new setting requirements.
The National Grid Electricity System Operator (NGESO), Distribution Network Operators (DNOs) and Independent Distribution Network Operators (IDNOs) have set up a funding scheme – Accelerated Loss of Mains Change Programme, (ALoMCP). It is designed to incentivise the commitment to ensure action is taken quickly. Although the changes have a deadline of September 2022, the funding is highly likely to run out long before that date. The grants are awarded on a first come, first serve basis and the grant windows are currently worked out on a quarterly basis and there is no guarantee your submission will be accepted on the first attempt, but will then be automatically re-entered into the next quarterly window.
Industrial Power Systems is an approved contractor to carry out this essential work and apply for the funding on your behalf, time is of the essence to get your application process started.
Make contact with us today and we can take care of the whole process for you.
All generators that are connected to the distribution networks in Great Britain have loss of mains protection (LoM), one of the many protection requirements on the electricity system. This applies to generating plant within the scope of EREC G59, regardless of the type of generator e.g. wind or gas. LoM is designed to check if a generator is still connected to the main network. If a power line disconnects for a few seconds, the generator at the end of the line is temporarily disconnected from the wider network. This can be unsafe and lead to damage to the generator or anything the generator is powering, such as industrial equipment and even domestic appliances. Loss of Mains (LoM) protection is there to make sure generators shut down safely in these circumstances.
Updated Distribution Code requirements, which will make LoM less sensitive, must be implemented by generation owners by summer 2022. Where LoM is provided by vector shift, it must be removed and/or replaced with rate of change of frequency protection (RoCoF). The RoCoF setting requirement has been changed from 0.125 Hz/s to 1 Hz/s and now with a definite time delay of 500 milliseconds. It will mean NGESO will be able to operate the grid more efficiently.
Most of the costs incurred in managing the LoM risk on the electricity transmission system is to limit the RoCoF to below 0.125Hz/s. RoCoF is the rate at which frequency changes and is used to detect the absence of the connection to the system and disconnects the site if that RoCoF exceeds a specific value. Currently NGESO is limiting the RoCoF to below 0.125Hz/s so that generators with RoCoF protection are not inadvertently tripped. The costs are significant and are paid for by all of us through our electricity bills.
These costs could be reduced if RoCoF above 0.125Hz/s was allowed. To achieve this, we need to change the RoCoF settings at all sites where RoCoF protection has an existing setting of 0.2Hz/s or less.
Industrial Power Systems can take care of everything and update your equipment at no cost to yourself – we simply charge our services directly to your local DNO – this means your system can be upgraded with minimum disruption to your day-to-day activities.
If you would like Industrial Power Systems to manage your G59 ALoMCP upgrade, please send us an enquiry then we will get in touch.