海上双馈电机开路故障容错性能评估

摘要

Faced with high failure rate and large outage losses,offshore wind farms needed to find operation faults and provided fault-tolerant mechanism as soon as possible doubly-fed wind generators (DFIGs) open-circuit fault-tolerant projects were built based on simon decision theory,which took power quality and wind turbine reliability as typical evaluation standards.The tolerant effect was evaluated combining the example that was doubly-fed wind generators rotor side converter single phase open circuit fault.The results showed that timely and effective fault-tolerant mechanism could raise availability,avoid fault deterioration and reduce economic losses caused by faults in offshore wind farms.%海上风电机组面临故障率高、停运损失大等问题,迫切需要及早发现运行故障、及时提供容错机制.构建基于西蒙决策理论的双馈风力发电机开路故障容错设计方案,选取电能质量和风力发电机组可靠性作为典型评估指标.结合双馈风力发电机组机侧变流器单相开路故障容错案例,给出量化的容错性能指标.结果表明及时有效的故障容错机制能够提高海上风电场的可用率,避免故障恶化,降低故障带来的经济损失.