Reliable power module for improved substation device availability

A power supply module for maintaining electric power delivery system protection during unavailability of control power, comprising:

• a first control power input in communication with a first control power source;
• a second control power input in communication with a second control power source independent of the first control power source;
• a first power conditioning circuit in communication with the first control power input to condition electric power to a direct current conditioned power;
• a second power conditioning circuit in communication with the second power input to condition electric power to the direct current conditioned power, an output of the second power conditioning circuit in electrical communication with an output of the first power conditioning circuit;
• a storage device in electrical communication with the first and second power conditioning circuits for storing power in the presence of the direct current conditioned power from any of the first and second power conditioning circuits, and releasing power upon failure of the direct current conditioned power from both of the first and second power conditioning circuits;
• and,
• a power output in electrical communication with the first power conditioning circuit, the second power conditioning circuit, and the storage device to receive the direct current conditioned power from any of the first power conditioning circuit, the second power conditioning circuit, and the storage device, and provide the direct current conditioned power to an electric power delivery system protective load.