Reference incidents exempelklausuler

Reference incidents. Imbalances can be caused by contingencies, including faults in a power generating module, a demand facility, a HVDC interconnector or from a tripping of an AC line. These imbalances are different from normal imbalances (which occur constantly) as large power deviations of this kind occur only occasionally and result in an instantaneous (within seconds) power surplus or deficit. An instantaneous power surplus or deficit produces an instantaneous frequency deviation, and may result in a frequency outside the standard frequency range. In these situations, the TSOs shall restore the frequency to the frequency restoration range (± 100 mHz) within time to restore frequency (15 minutes). Article 3(1)(58) of the SO Regulation defines the term reference incident as “the maximum positive or negative power deviation occurring instantaneously between generation and demand in a synchronous area, considered in the FCR dimensioning”. In a Nordic context, this would then be the maximum power deviation resulting from a contingency in the synchronous area that can occur in the time period for which the FRR dimensioning applies. The Nordic synchronous area and LFC block encompass the same bidding zones which means that in the context of reference incident they are interchangeable. 2023-02-13 The Methodology sometimes refer to “reference incident for the LFC area” or “reference incident for the control area”. This should be understood as the maximum positive or negative power deviation occurring instantaneously from generation, demand or an Interconnector in a LFC area or control area respectively. To make the distinction clear to the reader the Methodology always specifies the area which is evaluated for its possible maximum power deviation, even in the case of the synchronous area.