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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Technical Reference: Stand Alone Operation–Capstone Models C30 and C65 1. Introduction This document presents information on operating the Capstone MicroTurbine® in Stand Alone mode. Stand Alone mode allows power generation at locations where there is either no electric utility service or where backup power is desired when the electric utility is unavailable. For Stand Alone operation, the voltage and frequency of the microturbine are set to meet load requirements. 1.1. Stand Alone Mode The microturbine in Stand Alone mode utilizes a large on-board battery pack to power connected loads when no electric grid utility is available. The battery provides energy for starting the microturbine, and once idle conditions are reached, it provides an electrical buffer for sudden increases or decreases in load. During operation, the battery also provides energy for supporting power draw while the microturbine increases speed to provide the necessary power. In addition, it serves as a buffer to absorb energy during a loss of load while the microturbine decelerates to produce less power. During microturbine shutdown, the battery may be placed in sleep mode to minimize drain and preserve battery charge. Battery power usage management and state of charge is automatically controlled by software during microturbine operation. 1.2. Other Modes 1.2.1. Grid Connect Mode In Grid Connect Mode the microturbine synchronizes to the electric utility voltage and frequency reference and acts as a current source. Grid Connect mode allows the microturbine to be connected in parallel with the electric utility grid and reduces the facility power demand by base loading thus allowing peak demand to be supplied by the Utility or additional microturbine capacity. Refer to the Grid Connect Technical Reference (410027). 1.2.2. Dual Mode Dual mode combines Grid Connect and Stand Alone modes, so that the microturbine is able to maximize power from the grid when available and operate in Stand Alone during a utility outage. The capability to switch automatically between Grid Connect and Stand Alone modes is provided by the Dual Mode System Controller (DMSC). Refer to the Dual Mode System Controller Technical Reference (410071) for details. 410028 Rev E (June 2013) Page 6 of 42 Capstone reserves the right to change or modify, without notice, the design, specifications, and/or contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction. NOTE: Microturbine configuration can be performed through front panel display or Capstone Remote Monitoring Software (CRMS). Not all parameters can be accessed through the display; therefore it is advised to use CRMS for microturbine configuration. CRMS also has different levels of access depending on your Capstone training qualification. Please contact Capstone or local service provider for further details.PDF Image | Technical Reference Stand Alone Operation – Capstone Model C30 and C65
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