Coordinated scheduling method and system for wind, fire, storage and direct current systems

Abstract

The invention relates to a coordinated scheduling method and system for a wind, fire, storage and direct current system. The coordinated scheduling method comprises the steps: determining the optimalcharging and discharging power of an energy storage system according to the wind power output of a wind-fire bundling delivery system; determining the actual extra-high voltage direct current transmission power according to the rated extra-high voltage direct current transmission power, and determining the optimal thermal power output of the wind-thermal power bundled delivery system by using theactual extra-high voltage direct current transmission power; controlling the charging and discharging power of the energy storage system to be the optimal charging and discharging power, and controlling the thermal power output of the wind-thermal bundling delivery system to be the optimal thermal power output. According to the technical scheme provided by the invention, the advantages of charging, discharging and power response of the energy storage system are fully utilized, the energy storage system is brought into schedulable peak regulation resources, and the stability of output force ofa wind, fire and storage combined system is ensured; meanwhile, the utilization rate of a direct-current transmission channel and the wind power absorption capacity of a receiving-end power grid are improved.

Description

technical field [0001] The invention belongs to the field of coordinated dispatching of electric power systems, in particular to a method and system for coordinated dispatching of wind, fire, storage and direct current systems. Background technique [0002] With the depletion of fossil energy and the increasing pressure on the environment, the strategic adjustment of the energy structure is particularly important, and clean energy, mainly renewable energy, occupies an important position in the energy development strategies of all regions. [0003] In recent years, wind power has developed rapidly. However, wind power resources and loads are inversely distributed, and the consumption capacity of areas rich in wind power resources tends to be saturated, and wind abandonment is common. The power transmission method is the main means for large-scale wind power transmission and consumption across regions. Wind power output has the characteristics of fluctuation and intermittency...

AI Technical Summary

Problems solved by technology

The wind-fired bundled delivery method requires thermal power to have a certain peak-shaving capability, but in areas rich in wind power resources, the load level is usually relatively low, and the grid framework is weak, so its peak-shaving capability is weak. The construction of supporting large-scale thermal power plants is not in line with the original intention of clean energy development and utilization

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