A surge suppression system of a power distribution system of a power grid which receives three phase power from a power source, transmits said three phase power at high and medium voltages and converts and supplies said three phase power at a low voltage, comprising:
- a plurality of three phase system transformers of said power distribution system which either step said power up to or step said power down from one of said medium voltage or said high voltage, each of said system transformers having a primary side which receives three phase power from a power source through a first set of power distribution lines, which each transmit a respective phase of said three phase power, and a secondary side, which supplies three phase power downstream through a second set of power distribution lines which each transmit a respective one of said phases of said three phase power, said primary and secondary sides including respective primary and secondary side coils to transform said three phase power from a primary side voltage on said primary side to a secondary side voltage on said secondary side different from said primary side voltage, said power distribution system further including at least one step down transformer stepping said secondary side voltage supplied by an upstream one of said system transformers down to said low voltage for use by low voltage power consumers;
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- a plurality of surge suppressor units connected in parallel to said second set of power distribution lines on said secondary side of a respective system transformer via respective direct electrical connections, each said surge suppressor unit comprising a plurality of transformer banks which correct at least one of voltage imbalances and phase imbalances in respective phases carried by said power distribution system resulting from one or more disruptions caused by an external disturbance to said power distribution system from at least one of conduction associated with an electrical disturbance and induction associated with an electromagnetic disturbance through said second set of power distribution lines, each of said plurality of transformer banks including (i) a respective primary coil which connects to and receives the respective phase of three phase power received from said power distribution system and (ii) a respective secondary coil which connects in series together with a secondary coil of each other of said plurality of transformer banks and has a resistor connected in series therewith to harmlessly drain energy from disruptions caused by an external disturbance to said power distribution system from at least one of conduction associated with an electrical disturbance and induction associated with an electromagnetic disturbance, wherein said plurality of transformer banks transform said three phase power from said secondary side voltage of said system transformers to three phase power at a third voltage wherein a voltage imbalance or a phase imbalance in any one of said three phases on said secondary coils is counterbalanced by the remaining phases on said secondary coils which counterbalances voltage imbalances or phase imbalances on said secondary side of said system transformers of said power distribution system.