Utility-scale renewable peaker plant, tightly coupled solar pv and energy storage
AssigneeFluence Energy, LLC
InventorsSamuel Ley, Felipe Cantero
Life of this patent
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Abstract
An exemplary power system includes a DC power bus and a photovoltaic system connected to the DC power bus. An energy storage system is connected to the DC power bus and stores energy injected to the DC power bus by the photovoltaic system. A power inverter is connected to the DC power bus and converts power between the DC power bus and an AC connected load. The power system also includes a control system that receives power system data from one or more sub-systems and devices connected to the DC power bus, and controls, in real-time, one or more of the power inverter and the energy storage system to act as a load on the DC power bus based on the received power system data.
Claims3
A control system for a power system having a renewable energy source and an energy storage system, the control system comprising:
- a control circuit configured to receive power system data from one or more sub-systems and devices of the power system connected to a common DC power bus;
- and
- control, in real-time, one or more of a power inverter and the energy storage system of the power system to act as a load on the DC power bus based on the received power system data,
- wherein the control system is configured to, in real-time, increase or decrease real power injected to an AC connected load in response to a change in frequency on the AC connected load, wherein the control system is configured to, in real-time, increase or decrease reactive power injected to the AC connected load in response to a change in voltage on the AC connected load,
- wherein the control system is configured to, in real-time, increase or decrease real power injected to the AC connected load based on a state of the energy storage system by controlling current setpoints of the power inverter and energy storage system,
- wherein the control system is configured to, in real-time, restrict a rate of increase or decrease in power injected to the AC connected load to a specified percent per second (%/s),
- wherein the control system is configured to balance a state of charge of one or more energy storage systems in an energy storage facility, and
- wherein the control system is configured to control the power inverter to remain connected to the AC connected load during one or more fault events on the AC connected load.
Dependencies are inferred from the claim text.