Method for judging that 110kV main transformer does not meet N-1 in consideration of 10kV transfer

• Main Authors: LIU HENGWEI, WU GUOYUE, LIANG YI, LIN ZIHAN, GAO YANNA, CHEN LIPING, DONG HONG, HU LIUJUN, ZHU ZHIFANG, GUO ZIXUAN
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2023
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention relates to the field of power systems, in particular to a method for judging whether a 110kV main transformer does not meet N-1 in consideration of 10kV transfer, which comprises the following steps of: checking whether a 110kV transformer substation meets the requirement of short-time overload capacity of the main transformer after the N-1 of the main transformer, if the 110kV transformer substation meets the requirement of short-time overload capacity of the main transformer after the N-1 of the main transformer, determining that the transformer substation meets N-1, and if the 110kV transformer substation meets the requirement of short-time overload capacity of the main transformer after the N-1 of the main transformer, determining that the transformer substation meets N-1, otherwise, determining that the transformer if the 110kV transformer substation does not meet the requirement of the short-time overload capacity of the main transformer after the main transformer is N-1, checking the 10kV