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OPTIMISED REACTIVE POWER DISPATCH TO INCREASE NETWORK'S ELECTRIC VEHICLE HOSTING CAPACITY

The transition towards net zero 2050 has begun. As a result, distribution networks are seeing and expecting an increased amount of low carbon technologies (LCTs) connected within distribution networks. Increasing numbers of LCTs connected in distribution networks results in new constraints on the distribution systems that traditionally would have resulted in the installation of more network infrastructure. This project investigated an alternative approach to optimise the reactive power dispatch of existing generators to increase the network's hosting capacity for new LCT connections. This paper presents a potential flexible reactive power service using an optimisation algorithm to determine the reactive power dispatch to increase load headroom, reduce network losses and manage network constraints. Analysis was undertaken using the optimisation algorithm for a range of operating conditions across 3 different Bulk Supply Point (BSP) networks. The results demonstrate that with optimised reactive power dispatch the networks provided headroom for the equivalent of 10,000 additional Electric Vehicles (EVs) connected across the 3 BSP networks. The flexible use of reactive power within distribution networks has the potential to form a key component of the transition to net zero 2050.