邱方驰,李基民.基于快速检测和速断控制的智能断路器毫秒级保护方案[J].电测与仪表,2023,60(4):144-149. QIU Fangchi,LI Jiming.Msec protection scheme of intelligent circuit breaker based on fast detection and quick break control[J].Electrical Measurement & Instrumentation,2023,60(4):144-149.
基于快速检测和速断控制的智能断路器毫秒级保护方案
Msec protection scheme of intelligent circuit breaker based on fast detection and quick break control
In low-voltage distribution system, the accuracy and real-time of protection directly affect the safety and vital interests of power department and users. The intelligent circuit breaker uses the fast tracking and detection technology to monitor short circuits in real time and respond to faults quickly. Through singularity detection and analysis of short-circuit mutation information, the accuracy and reliability of protection are improved. Quick break control method based on the fast track detection technology in low voltage circuit breaker can to protect lines or nodes need to quickly provide rapid and reliable protection, can be used together with the traditional monitoring system, realizes the low pressure area protection function upgrade, also may carry on the construction according to the requirement of the area of intelligent control, realize the goal of low pressure area intelligent fast protection. Through the practical application in the field, the fast protection response to the high-current short-circuit fault can be completed within 18mS, which achieves the expected effect and verifies the feasibility and practicability of the scheme.
