System and method of power control for an energy storage charging station

A system comprising:

• plural charging stations electrically coupled to receive electrical power from a power distribution grid and configured to selectively charge plural energy storage devices that are configured to be detachably electrically coupled to the charging stations, the energy storage devices being disposed in respective electric mine vehicles for providing on-board electrical power at least for vehicle propulsion;
• and
• a control unit comprising a processor and a communication interface operably coupled to the processor, wherein the communication interface is configured to communicate with the charging stations;
• wherein the processor of the control unit is configured to generate transfer control signals for communication by the communication interface to the charging stations to control transfer of at least one of reactive power or active power from the charging stations to the power distribution grid based at least in part on first information in a load cycle profile of mining equipment other than the mine vehicles and that are electrically coupled to the power distribution grid;
• wherein the processor is further configured to generate charge control signals, based at least in part on second information in the load cycle profile, for communication by the communication interface to the charging stations to control the charging stations to charge the mining equipment with electrical power drawn from the power distribution grid;
• wherein the mining equipment are discrete electric machines other than the charging stations;
• wherein each of the magnitudes of the electrical power to be drawn by the mining equipment from the power distribution grid at the first times and each of the magnitudes of the electrical power to be transferred back to the power distribution grid by the mining equipment at the second times is at least one megawatt.

A system comprising:

• a control unit comprising a processor and a communication interface operably coupled to the processor, wherein the communication interface is configured to communicate with one or more charging stations electrically coupled to receive electrical power from a power distribution grid and configured to selectively charge one or more energy storage devices connected to the one or more charging stations,
• wherein the processor of the control unit is configured to generate transfer control signals for communication by the communication interface to the one or more charging stations to control transfer of at least one of reactive power or active power from the one or more charging stations to the power distribution grid based at least in part on a load cycle profile of one or more electric machines electrically coupled to the power distribution grid, the load cycle profile including one or more scheduled draw times at which the one or more electric machines are scheduled to draw electrical power from the power distribution grid and one or more designated draw magnitudes of the electrical power scheduled to be drawn by the one or more electric machines from the power distribution grid at the one or more scheduled draw times,
• wherein the processor of the control unit is configured to select one or more active power controls and to generate the transfer control signals for the one or more charging stations to implement the one or more active power controls that are selected, the one or more active power controls including load ramp regulation, frequency regulation, generator ramp regulation, supplemental reserve power, and emergency power.