Abstract
This paper presents a field-validated load model for the calculation of the energy conservation gains due to conservation voltage reduction (CVR) in highly meshed secondary networks. Several networks in New York City are modeled in detail. A time resolution of one hour is used to compute the energy savings in a year. A total of 8760 power flow runs per year for voltage reductions of 0%, 2.25%, 4%, 6%, and 8% from the normal schedule are computed. An equivalent ZIP model is obtained for the network for active and reactive powers. The most important finding is that voltage reductions of up to 4% can be safely implemented in the majority of the New York City networks, without the need of investments in infrastructure. The networks under analysis show CVR factors between 0.5 and 1 for active power and between 1.2 and 2 for reactive power, leading to the conclusion that the implementation of CVR will provide energy and economic savings for the utility and the customer.
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