Thermal modelling for dynamic transformer rating in low-carbon distribution network operation

Dynamic asset rating is one of a number of techniques that could be used to facilitate low-carbon electricity network operation. This presentation focuses on distribution-level transformer dynamic rating under this context. The models available for use with dynamic asset rating are discussed and compared using measured load and weather conditions from a trial network area within Milton Keynes. The most appropriate model is then used to investigate, through simulation, the potential gains in dynamic rating compared to static rating under two transformer cooling methods to understand the potential gain to the network operator.