Low-voltage distribution network voltage out-of-limit suppression method and device based on control input optimization

• Main Authors: ZHANG ZHIHUA, SHAO MEIYANG, LIU YAO, WANG LUJIN, AKIZAWA KAI, SI WEIBIN, LEI YUHANG, WANG LIRONG, DOU MINNA, LI BIN, ZHANG XIAOQING
• Format: Patent
• Language: Chinese; English
• Published: 09.08.2024
• Subjects: CALCULATING; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; COMPUTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; GENERATION; PHYSICS; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention belongs to the technical field of power system new energy grid connection, and discloses a low-voltage distribution network voltage out-of-limit suppression method and device based on control input optimization. The voltage out-of-limit suppression method for the low-voltage distribution network comprises the following steps: constructing and obtaining a node voltage out-of-limit model, and constructing and obtaining a voltage out-of-limit suppression scheme in which distributed energy storage and distributed power generation are coordinated; based on the voltage out-of-limit suppression scheme, sensitivity analysis of the control input signal is carried out, and a comprehensive influence coefficient index is obtained through calculation; based on the comprehensive influence coefficient index, a two-stage control input signal optimization method including effective control set screening and redundant control signal screening is adopted, and an optimal control input signal is obtained through scr