Power System Planning and Operation (Video)

This panel session video contains the following presentations:
1. Unit Commitment with Network Topology Optimization Considering Flexibility
It is necessary to introduce a large amount of renewable energy in order to realize a carbon-neutral society. However renewable energy is naturally derived energy so its output is uncertain so it is necessary to improve the flexibility of electric power in order to introduce it into the existing system. The one of methods to make the best use of the existing system, NTO (Network Topology Optimization) is verified but there is no the verification of NTO considering reserve that is important for eliminating the prediction error of renewable energy. In addition, there is a concern that the life of switch will be shortened if it is done every hour by the NTO. Therefore, in this paper we will verify the improved NTO-UC (NTO-Unit Commit) that reduces the frequency of network topology switching in the system considering the reserve. NTO-UC is a model that proposes an hourly generator start / stop operation plan and network topology from the demand forecast and photovoltaic (PV) output forecast of the intraday, and is verified using the modified IEEE 14 bus test system. As a result of the verification, it was confirmed that the effectiveness of NTO-UC was confirmed in the scenario considering the reserve and that the improved NTO-UC reduced the number of the transmission line switching.