Marginal Cost and Benefit Analysis for Distribution System Reliability Based on Consumer-Centric Reliability Assessment

The marginal cost and benefit of distribution system reliability are usually estimated from system-side, using traditional reliability assessment metrics, while neglecting the different power consumption features and reliability requirements from different consumers. To overcome this shortcoming, a new analysis and calculation method for marginal cost and benefit of distribution system reliability based on Consumer-Centric Reliability Assessment (CCRA) is proposed in this paper. Several new CCRA metrics are proposed to assess system's reliability level from consumer-side, and several new metrics are proposed to quantitatively calculate marginal cost and benefit of distribution system reliability sensed from consumers. The marginal cost/benefit curve for CCRA are presented to quantitatively describe the relationship among consumer-centric reliability level and the marginal cost/benefit, considering consumers' different power consumption features and reliability requirements during outage events. The IEEE-RBTS distribution system is studied to illustrate the effectiveness and efficiency of the proposed metrics and calculation methods.