Experimental validation and comparison of IEEE and CIGRE dynamic line models

In Northern Ireland, wind generation is mainly located in the west of the country, being connected to the major loads in the east through the transmission and distribution network. With the expansion of wind generation in the west it is envisaged that during wind intensive periods power flow through the limited network capacity, in times of contingency outages and low demand, will see overhead lines breaching their thermal limits. On the Northern Ireland Electricity (NIE) network, dynamic line ratings (i.e. ratings which are dependent on actual weather conditions, as opposed to static line ratings which are based on assumed weather conditions) of overhead lines are being investigated as an interim measure to accommodate distributed generation, as network reinforcement is commissioned. This paper presents analysis from two physical models based on the IEEE and CIGRE standards. Comparison of the modelling techniques is made, with both models used to predict conductor temperatures utilising data gathered from the NIE network and laboratory data from wind tunnel tests.