未来舰船电力系统保护策略研究

Discussions about the Protection Schemes in a Future Shipboard Power System

针对目前舰船电网保护研究多在辐射型单一简单结构中进行的弱势,在PSCAD/EMTDC软件中仿真未来舰船梯形电网的3种典型工况.采用仿真和按比例缩小物理模型试验,分析了传统舰船保护措施在未来舰船电网中的运行特性.同时建立了多种保护措施的仿真模型,详细归纳了多种保护措施在未来舰船梯形电网中应用的特点,并进行了仿真分析和对比讨论,对未来舰船电网保护措施设计可以提供参考.

At present, shipboard power systems usually have radial topologies and simplex structures, and the protective analysis of SPS often neglects various operating modes. In PSCAD/EMTDC, this paper simulated a notional future shipboard power system （SPS）, which had a special Ladder-Shaped topology with three typical operating modes. The authors applied the traditional SPS protection scheme to this new system in both simulation and experiment, and analyzed its merits and drawbacks. In order to find a suitable protection for this system, other multiple protecting methods were simulated for a contrast analysis. After discus.sing the characteristics of the protections used in this future shipboard power system, a conclusion was obtained. This paper may be regarded as a guide to aid designers in selecting adequate protection schemes for new systems, and in studying new protection schemes to minimize fault damage in the future.