Failure of transmission towers or their associated components can cause a cascading failure involving a number of adjacent towers along the line. Repair is very costly: it involves replacement of overhead lines and towers affected, and includes other costs associated with power disruption and litigation. Therefore utilities spend a significantly amount of money on inspection and maintenance programmes to prevent failures occurring. Over the RIIO-ED1 period it is anticipated nearly UK DNO’s will spend £1B on this activity alone.
The main failure mechanisms are wear or corrosion related. There is a need for a decision making process that can be adapted in response to known wear and corrosion rates in each particular area, so that towers at risk of failure can be identified more effectively and maintained to avoid unexpected failure.
To develop a model that considers how tower components are affected by corrosion and wear due to particular environmental conditions. This model assesses tower components’ condition estimates their lifetime expectancy at specific sites providing invaluable support to the decision making process
The development of the project at PNDC comprised the following steps:
A hazard model was created and implemented for particular areas of the transmission network. The model helps identifying areas were corrosion process develops faster and estimate remaining life. The model is expected to be integrated in the CBRM tool and complement existent models.
Estimated Inspection & Maintenance spend for UK DNOS over RIIO-ED1
towers data included in study
circuits assessed as part of study
You can engage with us in a number of different ways; either as a member, a direct client, or through a consortium funding arrangement. We will have the plan to suit your needs, simply submit some brief details and we will be in touch.