implemented with single-function, electromechanical or static devices and hard-wired relay logic. SCADA functions were centralized and limited to monitoring of circuit loadings, bus voltages, aggregated alarms, control of circuit breakers and tap changers, etc.
Disturbance recording and sequence-of-event data if available was centralized and local to the substation. With the advent of came the opportunity to move more functionality into fewer devices; resulting in simpler designs with reduced wiring.
A modern microprocessor-based IED replaces an entire panel of electro-mechanical relays with external wiring intact, and internal dc wiring replaced by integrated relay logic. Users retained total control over the degree of integration of various functions, while interoperability with the existing environment (instrument transformers, other relays, control switches, etc.) has been maintained using traditional hard-wired connections.
In terms of SCADA integration, the first generation of such systems achieved moderate success especially in cases where the end-user could lock into a solution from a single vendor. Integrating systems made up of IEDs from multiple vendors invariably led to interoperability issues on the SCADA side.
The vision of 61850 is extremely broad. While starting with a next generation SCADA protocol, the concept encourages and facilitates
, to the extent of blending in non-conventional CTs and VTs into the overall scheme by providing for a standardized way of exchanging information digitally between the producers and recipients of this information.
implemented with single-function, electromechanical or static devices and hard-wired relay logic. SCADA functions were centralized and limited to monitoring of circuit loadings, bus voltages, aggregated alarms, control of circuit breakers and tap changers, etc.
Disturbance recording and sequence-of-event data if available was centralized and local to the substation. With the advent of came the opportunity to move more functionality into fewer devices; resulting in simpler designs with reduced wiring.
A modern microprocessor-based IED replaces an entire panel of electro-mechanical relays with external wiring intact, and internal dc wiring replaced by integrated relay logic. Users retained total control over the degree of integration of various functions, while interoperability with the existing environment (instrument transformers, other relays, control switches, etc.) has been maintained using traditional hard-wired connections.
In terms of SCADA integration, the first generation of such systems achieved moderate success especially in cases where the end-user could lock into a solution from a single vendor. Integrating systems made up of IEDs from multiple vendors invariably led to interoperability issues on the SCADA side.
The vision of 61850 is extremely broad. While starting with a next generation SCADA protocol, the concept encourages and facilitates
, to the extent of blending in non-conventional CTs and VTs into the overall scheme by providing for a standardized way of exchanging information digitally between the producers and recipients of this information.
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