Process for FRR dimensioning exempelklausuler

Process for FRR dimensioning. The FRR dimensioning process shall follow step 1 to 3 of this Article and be conducted at least once a year. The TSOs aim to dimension FRR on a daily basis. 2023-04-12

Process for FRR dimensioning. Based on the rules in the Methodology, the TSOs develop the detailed FRR dimensioning methodology, paragraph 1-3 describes the steps of this methodology. The first step is the collection of input data, all TSOs of the LFC block will contribute with the necessary data, as described in Article 5. 2022-102501-0005 When the input data is available, the upper and lower bounds of the dimensioning of reserve capacity on FRR can be determined. Calculation of the upper bound is described in paragraph 2(a)(i) and calculation of the lower bound is described in paragraph 2(a)(ii). The upper bound for the LFC areas corresponds to the FRR requirement if each LFC area was in itself an LFC block, i.e. calculation of reserve capacity on FRR for reference incident for each LFC area, instead of for each control area, and no imbalance netting when calculating the reserve capacity on FRR for normal imbalances. For the LFC block, the upper bound on reserve capacity on FRR is given by the sum of the upper bounds of the LFC areas. The lower bound is the reserve requirement on FRR if the LFC block only consisted of one LFC area and there were no geographical limitations for the distribution of the reserves within the LFC block. Paragraph 2(b) describes the actual dimensioning. The calculation of reserve capacity on FRR for reference incidents is described in paragraph 2(b)(i) and 2(b)(ii). Paragraph 2(b)(i) corresponds to the first step in the dimensioning of reserve capacity on FRR for reference incident. In the first step the necessary capacity is determined so that each LFC area within a TSOs control area has access to sufficient capacity on FRR for reference incident to cover the LFC area reference incident. This will result in a reserve requirement per LFC area. In the next step the reserve requirement is reduced by sharing of reserves between control areas as described in paragraph 2(b)(ii). The calculation of reserve capacity on FRR for normal imbalances is described in paragraph 2(b)(iii) and 2(b)(iv). Paragraph 2(b)(iii) corresponds to imbalance netting on a control area level (step 1 in section 5.7) and paragraph 2(b)(iv) corresponds to imbalance netting on a LFC block level (step 2 in section 5.7). Figure 3 shows an illustration of the process for calculating reserve capacity on FRR for normal imbalances. It illustrates where the netting fits into the FRR dimensioning methodology. Netting is part of dimensioning FRR for normal imbalances, it is not part of dimensioning ...