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This project ended in July 2018 and is now closed.Dismiss

Improved Statistical Ratings for Distribution Overhead Lines

Network operators
  • UK Power Networks
  • Northern Powergrid
  • Scottish & Southern Energy Networks
  • Western Power Distribution
  • Electricity North West Limited
  • Scottish and Southern Energy Power Distribution
Funding mechanismNetwork Innovation Allowance
DurationJuly 2015 - July 2018
Project expenditure747,554
Research areaNetwork Operations, Comms & IT

August 2018

All work being undertaken by EA Technology is now complete – the test rig at Stoke has been decommissioned. The collected data has been compiled and analysed, with a final report from EATL having been submitted at the end of June 2018. In addition, a first issue of the rating calculation software was submitted to the Project Champion.

Closedown work is now underway to tie together the EATL work with the “hindcast” data sets provided by the Met Office and Digital Engineering, and to assess the overall impact of ratings calculated in line with the Stoke test rig results compared with those currently in use.

The closedown report will be completed by the end of September 2018 when it will be made available together with EATL’s final report, software package (including source code), and the final dataset derived from the Stoke test rig.


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August 2018

All work being undertaken by EA Technology is now complete – the test rig at Stoke has been decommissioned. The collected data has been compiled and analysed…

Contact: Paul Jewell - Policy Manager; Sven Hoffman - Company Overhead Line Engineer

This project will use the test rig facility to gather 2 years of conductor and weather data. This data will be analysed to validate and update overhead line ratings, update existing tools and methodologies, and produce a software tool that will enable GB DNOs to further optimise regional or line specific ratings.

Objectives:

  • To monitor the weather conditions and co-incident temperatures of various conductors at various current levels in order to provide a new dataset for the assessment of the weather risk element of probabilistic ratings and to derive a methodology for quantifying this risk, in combination with load risks, in order to calculate line ratings.
  • To update ENA ER P27 and ENA ACE 104.
  • To validate the updated CIGRÉ methodology for calculating conductor temperature from load and weather data, allowing the possibility of future “desk top” re-runs of the project to cover different locations and time periods.
  • To update existing software tools, and to provide a new software tool to enable more comprehensive (regional or line specific) rating assessments to be made.
  • To engage with the Met Office to enable rapid provision of appropriate weather data sets.

Expected Benefits:

  • Sufficient data collection to build a robust model of overhead line ratings.
  • Analysis of that data to produce a model that enables more robust rating of overhead lines than the current model.
  • A new software tool to enable more comprehensive (regional or line specific) rating assessments to be made.
  • A robust, accurately informed revision of ENA ACE 104 and ENA ER P27.