Fault Current Limiters and Impacts on the System Protection Behavior
Fault Current Limiters and Impacts on the System Protection Behavior作者机构:Electrical Power System Friedrich-A lexander- University Erlangen-Nuremberg Erlangen 91058 Germany
出 版 物:《Journal of Energy and Power Engineering》 (能源与动力工程(美国大卫英文))
年 卷 期:2010年第4卷第10期
页 面:54-57页
学科分类:0810[工学-信息与通信工程] 080802[工学-电力系统及其自动化] 0808[工学-电气工程] 08[工学] 081001[工学-通信与信息系统]
主 题:Fault current limiter first cycle behavior follow current protection system pick-up processing selectivity coordination.
摘 要:A deregulated power market is making short-circuit currents likely to exceed the thermal or mechanical permissible limits of switchgear. Consequently fault current limiters (FCL) become more necessary in power systems. The use of FCLs has an impact on the protection schemes and functions in power systems. Thus, before FCLs can be applied in the network, the impacts on existing protection system must be understood. Depending on the current limiting technique used, today's protection concepts may have to be adapted or revised to ensure proper network protection selectivity. A relationship between fault current limiters and protection schemes should be established by taking into account both protection and network specific issues, such as the impact of different FCL technologies, existing and new protection concepts, selectivity and innovative network. This paper is presenting a frame work for accomplishing this task.