船舶直流电网控制和保护策略的分析与应用

Analysis and Application of Control and Protection Strategy for Marine DC Power Grid

针对直流电网短路电流的特点、不同保护设备的性能及技术现状,归纳出直流电网性能指标、能量控制策略和协调保护措施等与传统交流系统的差异,强调混合式直流断路器是直流系统发展的关键设备。同时,分析当前存在的问题,结合实船案例展示直流系统综合保护方案的有效性,并对直流电网技术未来的研究方向进行展望。

According to the characteristics of short-circuit current in DC power grid,the performance and technology status of different protection equipment,the differences of grid performance index,energy control strategy,system coordination protection measures between DC power grid system and traditional AC system are summarized,the hybrid DC circuit breaker is the key equipment in the development of DC power grid is emphasized.At the same time,the existing problems are analyzed,the effectiveness of the comprehensive protection scheme of DC system is demonstrated combined with real ship cases,and the future research direction of DC power grid technology is prospected.