DISTRIBUTED GENERATION EFFECTS ON PROTECTIVE RELAYING APPLICATIONS

INNOVATIVE PROTECTION FEATURES Microprocessor Based Programmable Protection Systems  Inputs, Outputs and Operator Controls  Digital relay-relay communications  Disturbance data capturing and sequential event reporting

INPUTS AND OUTPUTS Inputs Provide Protection System and Equipment Status Outputs Provide Interconnection Functionality  Trip and close control  Inadvertent utility energization interlocks

PROGRAMMABLE OPERATOR CONTROLS Interconnection Control Functionality can be Easily Changed via Operator Control Programming

DIGITAL RELAY-RELAY COMMUNICATIONS Enables Advanced Feeder/Distributed Generation Control  Direct transfer trip initiated from feeder recloser  Distributed generation control based on feeder recloser loading  Distributed generation status provided to feeder recloser

SEL M IRRORED B ITS Communications

Transmit “Mirrored” to Receive

Recloser to DG Unit MIRRORED BIT Communication

CONCLUSIONS Programmable Protection Systems will Provide Flexibility for Future Distributed Generation Control Digital Relay-Relay Communications will Enable Feeder Control of Distributed Generation Programmable Operator Controls will Allow Routine Functionality Changes via Front Panel Push Button Control Interconnection System Enhanced by Programmable Output