Capacity for Customers
This project trials techniques to avoid conventional network reinforcement for the connection of low carbon technologies and general demand growth by using the latent capacity of the high voltage (HV) and extra high voltage (EHV) networks. HV networks have a level of redundancy to ensure security of supply in the event of faults or planned outages. HV circuits are often operated as radial feeders but with Network Open Points (NOPs) which can be closed in the event of outages. These circuits are typically loaded to about half their capacity to meet current engineering recommendations and ensure the required level of supply security.
This project researches a method where the NOP is closed so that the two circuits operate as a closed “ring”. Operating in this configuration, the project proposes to make use of a higher percentage of the available circuit capacity. Trials will be conducted on networks where faults are rare or unusual, and on those where faults are common. The DNO will install additional sensors and activators on the network, as well as a new communications and analytics system. This network automation aims to restore supply more quickly in the event of a network outage.
More information can be found on the Capacity to Customers website.