Power system with enhanced power safety

A power system comprising:

• a plurality of power units;
• each of said power units having a first terminal and a second terminal, being electrically coupled via at least one of said first terminal or said second terminal to at least one of remaining one(s) of said power units, and including
• a circuit breaker electrically coupled between said first and second terminals, and switchable between an open state and a closed state,
• a local controller electrically coupled to said circuit breaker, and operable to control switching of said circuit breaker, and
• an intelligent electronic device electrically coupled to said local controller, and including a database that stores first position data and second position data, the first position data indicating a position of said circuit breaker, the second position data indicating a position of said circuit breaker of each of said at least one of the remaining one(s) of said power units;
• said intelligent electronic devices of said power units being communicably coupled together via a network;
• in any one of said power units,
• said intelligent electronic device, when detecting that said circuit breaker switches from the closed state to the open state at least a predetermined number of times during a predetermined time period, is configured to determine that said circuit breaker has mechanically failed, and
• said intelligent electronic device, when determining that said circuit breaker has mechanically failed, is configured to output a disconnect message that contains a trip command and the first position data stored in said database via the network to said intelligent electronic device(s) of said power unit(s) other than said any one of said power units, and output a reset control signal that indicates not to reset for receipt by said local controller so that said local controller does not cause said circuit breaker to switch to the closed state;
• in each of said power unit(s) other than said any one of said power units,
• said intelligent electronic device, when deciding that the position indicated by the first position data contained in the disconnect message is identical to one of the position(s) indicated by the second position data stored in said database, is configured to determine that said circuit breaker is a relevant circuit breaker, and
• said intelligent electronic device, when determining that said circuit breaker is a relevant circuit breaker, is configured to output a trip control signal that indicates to trip based on the trip command contained in the disconnect message for receipt by said local controller, so that said local controller causes said circuit breaker to switch to the open state.