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Capstone Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Telephone: (818) 734-5300 • Facsimile: (818) 734-5320 • Website: www.microturbine.com Technical Reference Grid Connect Operation – Capstone Model C30 and C60/C65 Introduction This document presents information on operating the Capstone MicroTurbine in Grid Connect mode. Grid Connect mode allows the MicroTurbine to be connected in parallel with the electric utility grid to maximize power efficiency during peak load periods. Grid Connect mode gives the user the capability to reduce the facility power demand by supplementing electric grid power during peak periods. When a grid interruption does occur, the system can start automatically and resume supplying electricity to connected loads once grid power returns. In Grid Connect, the MicroTurbine is a current source only - the MicroTurbine synchronizes to the electric utility for both voltage and frequency reference. The MicroTurbine can be used to provide base load power or shave peak power based on loads or user commands. Features The MicroTurbine in Grid Connect operation allows electric utilities to expand generating capacity in small increments. This optimizes current infrastructure and reduces the need to upgrade specific site capacity and lowers overall costs. Grid Connect capabilities also include programmable peak shaving functions, which automatically configure the MicroTurbine to operate on a timed schedule or to follow local loads, thereby reducing peak demand charges. These special features are described as Time of Use and Load Following dispatch modes. Time of Use supplies variable power levels at selected times to meet user load demand. Load Following tracks local electrical loads to supply power on an as-needed basis. An additional feature, Reverse Power Flow Protection, prevents the MicroTurbine system from backfeeding the grid. Implementation of Load Following mode and Reverse Power Flow Protection requires installation of an external power meter and/or a timer or switch. The external power meter provides information to the MicroTurbine on power flow at a point between the MicroTurbine and the grid power supply. Power Specifications The full-load power output in Grid Connect mode for the Model C30 is 360-528 VAC (45-65 Hz, 3- phase), 46 ARMS per phase and for the Model C60/C65 is 360-528 VAC (45-65 Hz, 3-phase), 100 ARMS per phase. For complete electrical performance ratings, see the Model C30 and Model C60/C65 Electrical Technical Reference (410000 and 410001). For details on electrical interconnection, see the Electrical Interconnection Technical Reference (410009). Other Modes The MicroTurbine can operate in two other modes: Stand Alone, and Dual Mode. Stand Alone operation utilizes a large internal battery, which stores energy for starting the MicroTurbine when disconnected from the electric utility grid. Dual mode combines Stand Alone and Grid Connect modes, so the MicroTurbine is able to maximize power availability utilizing the grid when available, and Stand Alone during a utility outage. Refer to the Stand Alone Technical Reference (410028) and Dual Mode Controller Technical Reference (410039) for details. 410027 Rev F (February 2006) Page 1 of 23 This information is proprietary to Capstone Turbine Corporation. Neither this document nor the information contained herein shall be copied, disclosed to others, or used for any purposes other than the specific purpose for which this document was delivered. Capstone reserves the right to change or modify without notice, the design, the product specifications, and/or the contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction.PDF Image | TECH REF C30 Grid Connect Op
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