The physical point(s) at which the upstream Bulk Power SystemThe large-scale Generation Plant and other Energy Resources ... / Transmission System and a downstream Distribution System interconnect, typically at one or several major substations.
In a conventional, highly bifurcated Power SystemA critical societal System that, in the case of GW-scale gri..., these were traditionally known as the Supply-side and Demand-side respectively.
Power System that host growing volumes of Variable Renewable Energy (VRE)A generic term for Generation Plant that are powered by rene... and Consumer Energy Resources (CER/DER)A diverse range of small to medium scale energy resources th... are experiencing growing levels of VolatilityThe propensity of rapid and/or unpredictable change, especia... which can propagate upstream and downstream in a somewhat ‘tidal’ manner.
In this more dynamic context, simultaneously ensuring Resource AdequacyThe ability of the Power System to supply the total aggregat..., System SecurityThe ability to continue operating the Power System within de... and Reliability will require a much greater level of inter-dependence across the Transmission-Distribution Interface (TDI) than in the past.
Refer also to Operational CoordinationThe systematic operational alignment of Utility assets and n... and Transmission-Distribution Interoperability Mechanisms (TDIM)The current and emerging functions and protocols that need t...