TECH REF C30 Grid Connect Op

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TECH REF C30 Grid Connect Op ( tech-ref-c30-grid-connect-op )

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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Technical Reference: Grid Connect Operation – Capstone Models C30 and C60/C65 The Load Following mode is used in the following situations: 1) To reduce peak demand charges (where applicable), 2) When power draw from the utility grid is limited by supply equipment capacity, or 3) If installed MicroTurbine capacity exceeds the minimum local load demand and net revenue metering is not allowed by the utility. Parameters are as follows: • Reverse Power Protection enables the system to automatically shutdown if the external power meter registers negative power flow (see Reverse Power Flow Protection). • Utility Power indicates the allowable upper/lower utility power limits as controlled by the external power meter. • Response Time shows required time before the system responds with a new output command based on power meter signals; acts as filter to smooth out transients. • Minimum Power Shutoff assigns an allowable power limit below the utility setpoint (based on kW demand) that the MicroTurbine will operate before shutting down. • Minimum Power Startup assigns a minimum power limit for the turbine to turn on (based on kW demand) if the system load exceeds the utility setpoint. This parameter is intended to maximize system efficiency by allowing the utility grid to continue operation instead of the MicroTurbine at lower power levels. • Meter Constant specifies the number of watt-hours represented by a single pulse signal from the external power meter. Load Following settings are configured as follows: • CRMS: From the menu, select: Settings > Load Management, and then configure the desired parameters. • Display panel: Navigate to the Load Management menu, and configure the parameters. Load Management Menu Parameter Description Parameter Value Default Rev Pwr Protect Utility Pwr Enables the system to automatically shutdown if the power meter registers negative power flow Allowable upper/lower utility power limits as controlled by the external power meter Disable/Enable 0 to 120 seconds -1000 to +1000 kW 0 (Disable) 120 0 Response Time Required time before the system responds with a new output command based on power meter signals; Interval is used to smooth out power transients 1 to 120 seconds 1 Min TPwr Shutoff Power limit below the utility setpoint (based on kW demand) that the turbine will operate before shutting down; Interval is the delay time before turbine shutdown 0to1000kW 0to15min 0 0 Min Pwr Startup Minimum power limit for the turbine to turn on (based on kW demand) if the system load exceeds the utility setpoint; Interval is the delay time before MicroTurbine start up. Parameter is intended to maximize efficiency by limiting turbine operation at lower power levels. 0to1000kW 0to15min 0 Meter Const Power Meter pulse scaling – usually preset at installation and not adjusted 0 to 500.00 Wh/pulse 0.00 Page 15 of 23 410027 Rev F (February 2006) 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.

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