System and method for clean energy planned microgrid seamless transitions

A plant configured to supply power to one or more customer loads and to supply the power to or receive the power from a grid that is operated by a utility, the plant comprising:

• at least one microgrid configured to supply the power to the one or more customer loads;
• communication functionality configured to communicate with the utility;
• and
• at least one controller configured to:
• control the power supplied by the at least one microgrid to the one or more customer loads;
• responsive to an indication to transition the plant between grid-tied and islanded:
• perform one or more checks prior to the transition, the one or more checks comprising:
• for the transition from grid-tied to islanded:
• determining an amount of power provided to the grid and an amount of power provided to the one or more customers of the plant;
• or
• for the transition from islanded to grid-tied:
• determining, by the plant, whether sensed frequency, sensed voltage and sensed phase angle on both sides of the at least one islanding breaker is within a predetermined tolerance;
• responsive to performing the one or more checks prior to the transition, determine whether to perform one or more actions, the one or more actions comprising:
• for the transition from grid-tied to islanded:
• responsive to determining the amount of power provided to the grid and the amount of power provided to the one or more customers of the plant, modifying power output of the plant to be the amount of power provided to the one or more customers loads of the at least one microgrid;
• or
• for the transition from islanded to grid-tied:
• responsive to determining by the plant that the sensed frequency, the sensed voltage, and the sensed phase angle on both sides of the at least one islanding breaker are not within the predetermined tolerance, performing at least one action so that the sensed frequency, the sensed voltage, and the sensed phase angle on both sides of the at least one islanding breaker are within the predetermined tolerance;
• and
• after determining whether to perform the one or more actions and perform the one or more actions, cause the at least one islanding breaker to change its state thereby transitioning the plant between grid-tied and islanded.