摘要
为解决超高压电网短路电流水平过高的问题,笔者提出一种基于高可靠性可控多级火花间隙的超高压无源故障电流限制器。与现有超高压电网故障电流限制器相比,这种新型故障电流限制器具有更高的可靠性与动作速度的同时,可以大幅降低造价与运行维护成本,有助于大规模的推广应用。文中介绍了这种新型故障电流限制器的结构与工作原理,通过实验室样机进行的验证实验表明新型限流器能够在25μs内可靠动作;笔者还对这种新型故障电流限制器的控制策略进行了设计并对系统的时序和限流效果进行了分析。
To limit high-level short-circuit current in EHV power grid, a novel passive fault current limiter based on high reliability controllable multi-stage spark gap was developed. Compared with the existing EHV grid fault current limiter, this fault current limiter is higher in reliability and reaction speed, and lower in the costs for manufacture, operation and maintenance. And the design concept and working principle of this device are introduced. Experiment of operation reliability and actuation time on a prototype indicates that reliable actuation of this device can be achieved within 25 microsecond. Furthermore, the control strategy is designed, and the effects of time-series and current limitation of the system is analyzed.
出处
《高压电器》
CAS
CSCD
北大核心
2015年第5期77-82,共6页
High Voltage Apparatus
