摘要
智能电网要求对被保护的设备能够预警,并保证故障切除后的系统坚强和高安全性。介绍了智能电网条件下继电保护所起作用的发展,提出了将变压器状态检测与主保护跳闸功能一体化的预保护、保护的原理与技术;为防止连锁过载跳闸,给出了将单条线路的过负荷保护发展为输电断面安全性保护的原理与技术;为使有多条线路互联的系统失步解列后的子系统中不平衡功率最小、子系统内不再失步,构建了以解列策略主站协调优化、解列继电器协同动作的失步解列控制系统。
The early warning to protected device and the post-fault system robustness and high secure are required by smart grid. The development of protection functions for smart grid is introduced. The principle and technique of integrated state detection and main protection is presented for transformer. The principle and technique of transmission section security protection based on line overload protection is also presented to avoid the cascaded overload trips. In order to make the unbalanced energy of subsystem smaller after system disconnection to maintain the in-step condition within the subsystem,an islanding control system is constructed,the master station of which is responsible for the coordination and optimization while the islanding relays are responsible for the coordinated actions.
出处
《电力自动化设备》
EI
CSCD
北大核心
2010年第3期1-6,共6页
Electric Power Automation Equipment
基金
国家自然科学基金
教育部博士学科点基金
许继奖教金
南瑞继保公司的研究资助
