An approach to Smart Grid metrics

The introduction of Smart Grid technologies in actual distribution grids requires measuring their successes as a prerequisite for a cost/benefit analysis. Basis for the proposed metric is not the degree of technology usage but the degree of target fulfillment. These general targets of grid performance must be clearly distinguished from the measures to achieve them, of which Smart Grid technologies are part of. For metric representation spider diagrams are used. Metric calibration is an essential and demanding task. It shall be done by investigating extreme grids which meet targets best or worst. As an example the calibration process is explained for reliability aspects in this paper. Finally, a brief outlook on next steps is given.