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In the distribution management system (DMS), an essential application for the energy efficiency improvement is loss reduction. Loss reduction often involves the control of reactive power (var) resources to optimize the var flow in the network. Traditionally, most available var resources in the distribution network have been switchable shunt capacitor banks. Today distributed energy resources (DER)...
Over the last thirty years, Conservation Voltage Reduction (CVR) has been proven to reduce energy consumption and lower demand by 3–5 percent. While these savings have typically been achieved through the application of complex power-flow models, this approach is not well suited to the modern grid (e.g. distributed energy resources, etc.). New technology has been introduced to the market that allows...
The EPRI Green Circuits project was a collaborative effort of 22 utilities with the main objective of evaluating ways to improve distribution efficiency. For this evaluation, 66 circuit case studies were used. Each circuit was modeled in detail from the substation to each customer's meter. Nearly all of the circuit models were augmented with historical circuit-measurement data that allowed for hourly-resolution...
The concept of reducing distribution system energy losses is not new; however, advancements in data availability and tools for distribution system analysis have made it more practical to accurately compute distribution system energy savings. Distribution system losses are relatively low compared to the total load demand and there are uncertainties in system parameters that might be included in the...
Based on the principle and the launch profile of high speed long primary double-sided linear induction motor (DSLIM), the simulation model of the motor is constructed by using the moverpsilas field oriented control (FOC) method. The dynamic performance of the motor are simulated, and the rules of voltage, current, ratio of voltage to frequency, power factor, power efficiency and energy efficiency...
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