نوع مقاله : مقاله پژوهشی
نویسندگان
1 مرکز تحقیقات ایمنی دانشگاه شیراز، صندوق پستی: 7193616548، شیراز – ایران
2 دانشکده مهندسی مکانیک، دانشگاه شیراز، صندوق پستی: 7193616548، شیراز – ایران
کلیدواژهها
عنوان مقاله English
نویسندگان English
The reliability of the transmission grid significantly influences the occurrence frequency of Loss of Offsite Power (LOOP), the predominant core damage-inducing event in non-passive nuclear power plants (NPPs). With the increasing integration of wind farms into transmission grids for economic and environmental reasons, grid stability is affected. Therefore, it is imperative to investigate how these changes impact the frequency of Grid-Related LOOP (GR-LOOP). This study examines the effects of varying grid conditions, specifically wind farm penetration levels, on GR-LOOP occurrence frequency. A proposed methodology is applied to grids under different operational scenarios, considering varying percentages of wind farm penetration, different loading conditions, and power flow methods. The frequency of GR-LOOP scenarios is evaluated for grids with 0%, 10%, and 20% wind penetration before a 3-phase short circuit fault occurs on transmission lines. Results show that at the riskiest power plant location, the occurrence frequencies are 3.23E-05, 4.49E-05, and 4.86E-05 per reactor-year for the respective wind penetration levels. Conversely, at the safest location, frequencies are 8.58E-06, 1.55E-05, and 1.52E-05 per reactor-year. These findings underscore the significant impact of wind farm penetration on GR-LOOP frequency in mixed grids. The non-linear and non-proportional changes in frequency with increasing wind penetration highlight the necessity of integrating such considerations into safety assessments for nuclear power plants.
کلیدواژهها English