NORDIC GRID DISTURBANCE STATISTICS 2012

Transkript

1 NORDIC GRID DISTURBANCE STATISTICS 2012 Utdrag ur rapport utarbetad av DISTAC-gruppen under RGN inom ENTSO-E Sture Holmström

2 2 Korta bakgrundsfakta > utarbetades Riktlinjer för klassificering av driftstörningar inom dåvarande Nordel > Statistiken omfattar spänningsnivåerna kv > DISTAC-gruppen sorterar under System Operations Committee / Regional Group Nordic (inom ENTSO-E) > Sedan 2006 skrivs rapporten på engelska > SvK begär in underlag från regionnäten > Rapporten redigeras av konsult (nu Aalto University)

3 3 Normal arbetsgång: > Januari förfrågan från SvK till regionnätsägarna > April SvK sammanställer Sverige-data som skickas till den konsult som redigerar rapporten > Maj första utkast till rapport från konsulten > Juni Möte med representanter för de nordiska länderna och konsulten > Augusti-September Rapporten publiceras

4 Utdrag från Excelark med data från regionnäten 4

5 5 Rapportens innehåll > Driftstörningar antal, orsaker, fördelning över tid > Störningar med ILE > Felfrekvens för kraftsystemkomponenter > Avbrott antal, tidsutsträckning, per komponent > HVDC-förbindelser

6 Number of disturbances 6 Grid disturbances ) FIGURE 3.1 NUMBER OF GRID DISTURBANCES IN EACH NORDIC COUNTRY DURING THE PERIOD

7 % of disturbances 7 Distribution of grid disturbances according to month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec FIGURE 3.2 PERCENTAGE DISTRIBUTION OF GRID DISTURBANCES ACCORDING TO MONTH IN EACH COUNTRY IN 2012.

8 % of disturbances Distribution of grid disturbances according to cause Lightning Other environmental cause External influence Operation and maintenance Technical equipment Other Unknown FIGURE 3.4 PERCENTAGE DISTRIBUTION OF GRID DISTURBANCES ACCORDING TO CAUSE IN 2012.

9 % of disturbances Average distribution of grid disturbances according to cause Lightning Other environmental cause External influence Operation and maintenance Technical equipment Other Unknown FIGURE 3.5 AVERAGE PERCENTAGE DISTRIBUTION OF GRID DISTURBANCES ACCORDING TO CAUSE DURING THE PERIOD

10 10 Energy not supplied Country ENS Annual average of ENS ENS divided into different voltage levels during the period MWh MWh (%) kv 220 kv 400 kv Other 1) Denmark ) ) 0.0 Finland Iceland Norway Sweden ) 2.0 Nordic TABLE 4.1 ENERGY NOT SUPPLIED (ENS) ACCORDING TO THE VOLTAGE LEVEL OF THE INITIATING FAULT 1) The category other contains energy not supplied from system faults, auxiliary equipment, lower voltage level networks and the connections to foreign countries, etc. 2) The further explanation for the low ENS in Denmark compared with other countries can be found in Appendix 1, which discusses the different calculation methods of ENS. 3) The high values for the 400 kv share of energy not supplied in Denmark and Sweden are the result of a major disturbance in southern Sweden on the 23rd of September in 2003.

11 ENS divided into different voltage levels in Denmark Finland Other 132 kv 220 kv 400 kv Other 132 kv 220 kv 400 kv Iceland Norway Other 132 kv 220 kv 400 kv Other 132 kv 220 kv 400 kv Sweden Nordic Other 132 kv 220 kv 400 kv Other 132 kv 220 kv 400 kv FIGURE 4.1A ENERGY NOT SUPPLIED (ENS) IN TERMS OF THE VOLTAGE LEVEL OF THE INITIATING FAULT IN 2012.

12 12 Country Total consumption ENS ENS / consumption ENS divided according to installation during the period (%) GWh MWh Ppm Ppm Overhea d Sta line Cable tions Other 2012 Denmark Finland ) Iceland Norway Sweden Nordic TABLE 4.2 ENERGY NOT SUPPLIED (ENS) ACCORDING TO TOTAL INSTALLATION

13 % of ENS 13 Distribution of ENS according to month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec FIGURE 4.2 PERCENTAGE DISTRIBUTION OF ENERGY NOT SUPPLIED (ENS) ACCORDING TO MONTH IN 2012.

14 % of ENS Distribution of ENS according to cause Lightning Other environmental cause External influence Operation and maintenance Technical equipment Other Unknown FIGURE 4.3 PERCENTAGE DISTRIBUTION OF ENERGY NOT SUPPLIED (ENS) ACCORDING TO THE CAUSE OF THE PRIMARY FAULT IN 2012.

15 Number of faults per 100 km/year 1,20 Fault trend for kv overhead lines 15 1,00 0,80 0,60 0,40 0,20 0, year period FIGURE 5.7 FAULT TREND FOR OVERHEAD LINES AT VOLTAGE LEVEL KV.

16 Number of faults per 100 km/year 3,50 Fault trend for 132 kv overhead lines 16 3,00 2,50 2,00 1,50 1,00 0,50 0, year period Figure 5.8 Fault trend for overhead lines at voltage level 132 kv.

17 Total length of cables (km) Total length of cables at all voltage levels FIGURE 5.9 TOTAL LENGTH OF CABLES AT ALL VOLTAGE LEVELS DURING THE PERIOD

18 Number of faults per 100 km/year Fault trend for cables 18 2,50 2,00 1) 1,50 1,00 0,50 0, year period FIGURE 5.11 FAULT TREND FOR CABLES AT ALL VOLTAGE LEVEL. 1) The explanation for the increasing fault trend for Sweden is that there were several cable faults in 2008, as seen in Figure 5.10.

19 Number of faults per 100 km/year kv cable 4,50 4,00 3,50 3,00 2,50 2,00 1,50 1,00 0,50 0, FIGURE 5.10 ANNUAL DIVISION OF FAULTS DURING THE PERIOD

20 Number of faults per 100 devices/year 6,00 Fault trend for kv power transformers 20 5,00 4,00 3,00 2,00 1,00 0, year period FIGURE 5.15 FAULT TREND FOR POWER TRANSFORMERS AT VOLTAGE LEVEL KV.

21 Number of faults per 100 devices/year Fault trend for 132 kv power transformers 21 6,00 5,00 4,00 3,00 2,00 1,00 0, year period FIGURE 5.16 FAULT TREND FOR POWER TRANSFORMERS AT VOLTAGE LEVEL 132 KV.

22 Number of faults per 100 devices/year kv power transformer 6,00 5,00 4,00 3,00 2,00 1,00 0, FIGURE 5.14 ANNUAL DIVISION OF FAULTS DURING THE PERIOD

23 % 23 Trend for the percentage of power system units without outages year Line Busbar Transformer Figure 6.5 The yearly percentage of the power system units that had no outages during the period

24 24 Overview of each HVDC link in all categories Unavailable (MWh) Transmission (MWh) Technical capacity not used (MWh) Kontek [DK2 -> DE] 6% 71% 23% Storebaelt [DK1 -> DK2] 6% 46% 48% Fenno-Skan 2 [FI -> SE3] 21% 60% 20% Fenno-Skan 1 [FI -> SE3] 38% 48% 14% Vyborg link [FI -> RU] 14% 32% 54% Estlink 1 [FI -> EE] 4% 61% 35% Skagerrak 3 [NO2 -> DK1] 7% 74% 18% Skagerrak 2 [NO2 -> DK1] 11% 66% 23% Skagerrak 1 [NO2 -> DK1] 12% 65% 23% NorNed [NO2 -> NL] 3% 93% 4% Baltic Cable [SE4 -> DE] 22% 60% 18% SwePol [SE4 -> PL] 0% 54% 46% Konti-Skan 2 [SE3 -> DK1] 4% 57% 39% Konti-Skan 1 [SE3 -> DK1] 6% 57% 36% 0 % 10 % 20 % 30 % 40 % 50 % 60 % 70 % 80 % 90 % 100 %

25 % 90 % 80 % 70 % 60 % 50 % 40 % 30 % 20 % 10 % 0 % Konti-Skan 1 [SE3 -> DK1] Disturbance outage [MWh] Maintenance outage [MWh] Other outages [MWh] Limitations [MWh] Export losses [MWh] Export [MWh] Technical capacity not used [MWh] Import [MWh] Import losses [MWh] Emax 3,25 TWh january february march april may june july august september october november december Annual

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