The invention provides a load side
energy storage three-level balance
system and a control method thereof, belongs to the technical field of power systems and distributed
energy storage control, and is suitable for traffic energy fusion scenes such as expressways, service areas,
toll stations, tunnels and the like. The invention provides a load side
energy storage three-level balance
system and a control method for solving the problems that
green electricity is difficult to consume on site and the
electric energy quality fluctuates due to the fact that a traditional highway network supplies power in a one-way tree shape and is rigid in operation and energy storage single-point deployment lacks
collaboration. The
system comprises a district-level energy storage unit (in-situ adjustment of
optical storage load), a line-level energy storage coordinator (multi-district energy
complementation), a
transformer substation-level centralized energy storage system (
global energy storage aggregation) and an
energy management platform, and scheduling is performed according to the principle that in-situ balance is dominated, cross-district coordination is assisted, and centralized trailing is performed. Local energy self-balance can be realized, the
green power utilization rate is improved, the system redundancy is reduced, the
power grid interaction capability is enhanced, and the energy storage comprehensive return on investment is improved.