Long-Run Network Pricing to Facilitate Users' Different Security Preference

摘要

This paper proposes a new long-run network pricing model that can account for network users' preference for security of supply when assessing their impact on network development costs. The new model firstly classifies load at each node into interruptible and uninterruptible parts according to their different security preference. It then seeks to examine the impact on the network development costs from a marginal increment of the two types of loads at each node. It assumes that interruptible loads can be interrupted under contingencies, whereas both loads should be satisfied under normal conditions. Use-of-system (UoS) charges are then calculated by translating the impact on network development costs into locational long-run network charges. Compared with the existing approach which assumes that consumers at the same locations are subject to the same security levels, the proposed approach acknowledges users' different security preference, respects the reduced requirement on the network development costs from interruptible loads, and prices users' UoS charges accordingly.