Hadamard-product-based method and device for generating branch on-off short circuit standard exceeding suppression strategy

• Main Authors: CHEN YONG, YANG XUETAO, FENG JING, XU PENGFEI, SONG DUNWEN, XIE JIAZHENG, LIU KAIXIN, YANG HONGYING, LIU DAOWEI, MA SHIYING, ZHAO GAOSHANG, DU SAN'EN
• Format: Patent
• Language: Chinese; English
• Published: 09.08.2022
• Subjects: CALCULATING; COMPUTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; PHYSICS

The invention discloses a method and a device for generating a branch breaking short circuit standard exceeding suppression strategy based on hadamard-product. The method comprises the following steps: determining a node admittance matrix of short circuit current; when equipment is adopted for switching on or switching off, a switching-off branch set for short circuit suppression is obtained; performing branch supplementation and limitation on the cut-off branch set to form an effective cut-off dominant control branch set; in the node admittance matrix, a class II column admittance matrix is extracted; constructing a branch on-off control participation matrix according to the class-II column admittance matrix, and performing hadamard-product on the participation matrix and the class-II column admittance matrix to generate a class-II short circuit suppression admittance substitution matrix; replacing admittance values in the node admittance matrix with element values of a replacement matrix to form a power gri