A power system is to supply reasonable level of reliable, qualitative electricity supply to its customers in an acceptable price. Reasonable level is one balancing the need for power supply and the cost involved. An effective way to solving this issue is by the use of quantitative assessment of the reliability indices based on the probability of availability and unavailability of supply. The unavailability of supply (an interruption in the supply of electricity) brings in economic impacts for both the customers and the utilities. Customer interruption mean the loss of service due to a forced outage for more than five minutes, for one or more customers, which is the result of one or more failures. Therefore, cost of interruption is evaluated as a basic parameter of economic evaluation in the process of increasing the power system reliability. Reliability of distribution network is an important subject due to increasing demand for more reliable service with less interruption frequency and duration. This paper presents the main cause of power interruption, evaluate the cost of customer interruption by IEEE 1366-2012 guideline distribution reliability indices, and compare the interruption cost of various utility sectors without and with distributed generation (DG).
Economic Impacts, Utility sectors, Customer Interruption Cost
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