Frequency Requirements Clause Samples
Frequency Requirements. The Facility shall be fitted with a fast-acting proportional active power control system or equivalent control device to provide frequency response. The frequency or speed control device(s) may be on the Facility control station. The Facility shall be able to provide at least the Active Power output response to frequency changes displayed in Figure 4. The active power output shall be only allowed to increase again as soon as the frequency is only 50.05 Hz. Above 52 Hz and below 47 Hz, the Facility shall be disconnected from the CEB System.
Frequency Requirements. Nominal system frequency is 60 Hz. Frequency will normally be controlled by the EMS. Company shall have the right to utilize the Facility to regulate frequency on the Company System consistent with this Attachment B (Facility Owned by Seller). The electrical frequency of electric energy delivered to Company by Seller shall not cause a variation of more than 0.05 Hertz from 60.00 Hertz.
Frequency Requirements. (a) Nominal system frequency is 60 Hz.
Frequency Requirements. Table 2 of the RfG for the Synchronous Area Continental Europe willshall be replaced by table A below: Table A: Minimum time periods for which a power generating modulean Offshore PPM has to be capable of operating on different frequencies, deviating from the nominal value, without disconnecting from the networkOffshore Transmission System. Synchronous area Frequency range Time period for operation Continental Europe 47.5 Hz – 48.5 Hz 30 minutes 48.5 Hz – 49.0 Hz 30 minutes 49.0 Hz – 51.0 Hz Unlimited 51.0 Hz – 51.5 Hz 30 minutes Table 10 of the RfG for the Synchronous Area Continental Europe shall be replaced by table B below: ▇▇▇▇▇▇ ▇▇▇ B.V. DATE October 8, 2015 PAGE 15 of 28 Table B: The table shows the minimum period during which an AC-connected oOffshore power park modulePPM must be capable of operating over different voltage ranges deviating from a nominal value without disconnecting. Synchronous area Voltage range Time period for operation Continental Europe 0.85 pu – 0.90 pu 60 minutes 1.118 pu – 1.15 pu 60 minutes Signed for approval: ▇▇▇▇▇▇ ▇▇▇ B.V. DATE November 4, 2015 PAGE 17 of 41 The requirements of Article 20.(2)(b) RfG are further detailed to:
i. Additional reactive current injection shall be activated in the event of a voltage deviation of more than 10% of the effective value at the Connection Point of the Power Park ModuleOffshore PPM. This 10% voltage deviation is called the dead band. The voltage control shall ensure the supply of additional reactive current, originating from the Power Park ModuleOffshore PPM, of minimum 2% and maximum 10% of the rated current per percent of the voltage deviation, see Figure a. The full required reactive current must be available after tp = 40 ms after the fault inception into the Networkgrid, with a rise time (tr) less than 30 ms, see Figure b.
ii. Additional reactive current injection shall be supplied up to a voltage limit of minimal 120% rated Power Park ModuleOffshore PPM voltage.
iii. After fault clearance stable operation must be pursued. Reactive Current DIB /IN Generating Unit voltage limit Reactive current injection in case of underexcited operation Reactive current injection in case of overexcited operation Deadband X = 0 , 1 - 1 ,0 Voltage Drop / Rise (U-U0)/UN ▇▇▇▇▇▇ ▇▇▇ B.V. DATE October 8, 2015 PAGE 16 of 28 UN: rated Voltage IN: rated current DIB: additional reactive current during fault, DIB = IB - IB0 IB: reactive current during fault IB0: pre-fault reactive current U0: pre-fault Volt...
Frequency Requirements. Active Power Output (as a % of available Active Power) Each Inverter of the Facility shall be able to provide frequency response as displayed in the above figure. Under normal system frequency ranges, the Facility shall be operated with an active power output as set in the above figure.
Frequency Requirements. Nominal system frequency is 60 Hz. · Droop Characteristic