29 November 2018
The 14th IET International Conference on AC and DC Power Transmission (ACDC 2018) (ACDC)
28–30 June 2018
power electronics, power transformers, power grids, distribution networks, distributed power generation, load flow, power control, AC-DC power convertors, multiport, multifunction power electronic transformer, hybrid AC/DC power grids, MPMF-PET, mixed AC/DC power grids, distributed energy resource, system power flow calculations, hybrid AC/DC distribution system, AC system, DC system
This study proposes a generalised configuration of the multi-port and multi-function power electronic transformer (MPMF-PET) based mixed AC/DC power grids, and the equivalent circuit and mathematical model of the MPMF-PET are established. To illustrate the benefits of using MPMF-PET to improve the integration and power control ability of a distributed energy resource in an existing distribution network, an iterating evaluation algorithm is proposed for system power flow calculations. Case studies are carried out on a real distribution system modified with MPMF-PET. Results show that the performance of the hybrid AC/DC distribution system is increased by MPMF-PET through proper control and optimal operation, which realised the renewable energy in the AC system to power the DC system and increased the renewable energy acceptance.