Evaluation of Customer-oriented Power Supply Risk with Distributed PV-Storage Energy Systems

Abstract

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Disaggregation of Reported Reliability Performance Metrics in Power Distribution Networks

“…This section details the application of 2 combinations (hence network scenarios) of the 3 smart grid technologies proposed in this study -1) an uncontrolled photovoltaic (PV) system combined with a technique for demand side response (DSR) designed for reliability improvement, and 2) local energy storage (ES) controlled by an energy management system (EMS), also combined with DSR [9,12]. 1) PV+DSR: While PV does not directly reduce the peak demand, it shortens the duration of the load peak, which is useful for current-carrying PCs [13].…”

“…without smart grid technologies). The indices provided are all standard indices aside from CAMIFI, which is defined in [12] and represents a measure of the frequency of SI to only affected customers. Indices for the AGG network are also presented in Table III, which effectively represent a weighted mean of the indices from all 3 networks (as usually presented by DNOs when reporting on their network reliability performance).…”

“…A good example is that for all networks assessed, ACCI (measuring curtailed energy per customer interrupted only) is at least 5 times greater than the associated ENS. This highlights one of the major drawbacks of system-oriented reliability indices, which is that they include customers who enjoy uninterrupted power supply for substantially long periods, thereby concealing some of the shortcomings of network performance, especially to WSC [12]. Therefore, customer-oriented indices can complement system ones to present a more accurate picture of the customer-view of network performance and thus aid DNOs in managing customer expectations and thus WTP.…”