Fuel-Minimization-Oriented Power Distribution Strategy of Diesel Power Generation-Energy Storage Parallel Power Supply Architecture

To enhance power supply reliability and reduce customer outage time, Mobile Emergency Power Supply Vehicles (MEPSVs), including Mobile Diesel Generator Vehicles (MDGVs) and Mobile Energy Storage Vehicles (MESVs), have become indispensable sources for grid maintenance and disaster response. However, in practice, relying solely on MESVs is constrained by battery capacity, making it difficult to meet long-duration power demands. Conversely, using only MDGVs often results in low efficiency and high fuel consumption under fluctuating load conditions, posing challenges to achieving economical and efficient power supply. To address these issues, this paper investigates the parallel power supply architecture of MDGV and MESV, and develops control models for diesel generator and energy storage converter. A fuel-minimization-oriented power distribution strategy is proposed for coordinated operation, aiming to minimize fuel consumption while maintaining the energy storage state of charge (SOC) within a reasonable range. Furthermore, a voltage–frequency control strategy is employed for the energy storage converter, while active power control is applied to the diesel generator. Through adaptive operation mode switching, the proposed strategy enables efficient and cost-effective parallel operation of MDGV and MESV, ensuring long-duration power supply across a wide load range. This approach overcomes the limitations of conventional single-source power supply methods and provides an effective control solution for the intelligent and efficient operation of emergency power supply systems. Finally, the feasibility of the proposed strategy is verified through simulation and further demonstrated by experiments on a hardware platform.