Abstract
The practicality of any particular distributed generation installation depends upon its ability to reduce overall energy costs. A simple yet effective economic dispatch strategy with the goal to use distributed generation to minimize the cost of building energy is developed in this work. The strategy is designed to reduce the individual utility, operations and maintenance charges that increase the cost of energy. Various electric rate structures are modeled in detail and applied with the economic dispatch strategy to simulate meeting various measured building demand dynamics for heat and power. Using the economic dispatch strategy, various modes of operation, such as electric or thermal load following, peak shaving, peak shifting, or base-load operation are simulated. The economic dispatch strategy is compared to more traditional dispatch strategies to demonstrate its effectiveness in reducing total energy costs.
Highlights
Distributed generation (DG) technologies that use natural gas are commercially available today, including small gas turbine (GT) systems, microturbine generators (MTG), and fuel cells (FC) [1]
Electrical and thermal demand load following dispatch strategies have been compared for a combined cooling, heating, and power (CCHP) system, showing that the desirable dispatch strategy is dependent upon the specific energy load profile and DG equipment used [16]
Common components of standby service are supplemental service, backup or standby service, scheduled maintenance service, and economic replacement power [24]
Summary
Distributed generation (DG) technologies that use natural gas are commercially available today, including small gas turbine (GT) systems, microturbine generators (MTG), and fuel cells (FC) [1] Most of these systems produce electricity and high grade heat for combined heat and power (CHP) applications [2,3,4]. Electrical and thermal demand load following dispatch strategies have been compared for a combined cooling, heating, and power (CCHP) system, showing that the desirable dispatch strategy is dependent upon the specific energy load profile and DG equipment used [16]. The dispatch strategy is developed, described and justified with limited application using four building dynamic demand profiles as examples This dispatch strategy is used to help determine when investment in DG technology makes economic sense elsewhere [27]
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