Utility-scale renewable peaker plant, tightly coupled solar PV and energy storage

A power system, comprising:

• a DC power bus;
• a photovoltaic system connected to the DC power bus;
• an energy storage system connected to the DC power bus and configured to store energy injected to the DC power bus by the photovoltaic system;
• a power inverter connected to the DC power bus, the power inverter configured to convert a DC power from the DC power bus to an AC power for an AC connected load;
• a control system configured to:
• receive power system data from one or more of the photovoltaic system, the energy storage system, or other device connected to the DC power bus;
• and
• control, in real-time, one or more of the power inverter and the energy storage system based on the received power system data, wherein the energy storage system comprises a first control circuit and a first bi-directional converter and the photovoltaic system comprises a second control circuit and a second converter, and wherein the first bi-directional converter and the second converter have a common voltage for the DC power bus;
• and
• one or more sensors connected to the DC power bus and the AC connected load, wherein the control circuits of the energy storage system and the photovoltaic system are configured to receive input signals from the one or sensors connected to the DC power bus and command signals from the control system, analyze the received input and/or command signals, and control an operating mode of the photovoltaic system and the energy storage system, respectively, based on the analysis.

A power system, comprising:

• a DC power bus;
• a photovoltaic system connected to the DC power bus;
• an energy storage system connected to the DC power bus and configured to store energy injected to the DC power bus by the photovoltaic system;
• a power inverter connected to the DC power bus, the power inverter configured to convert a DC power from the DC power bus to an AC power for an AC connected load;
• and
• a control system configured to:
• receive power system data from one or more of the photovoltaic system, the energy storage system, or other device connected to the DC power bus;
• and
• control, in real-time, one or more of the power inverter and the energy storage system based on the received power system data,
• wherein the control system is configured to, in real-time, increase or decrease real power injected to the AC connected load in response to a change in frequency on the AC connected load, and
• 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).