只有当没有后备路由存在时，才丢弃数据分组，并且向源节点发送一个路由错误信息，这时再由源节点发起一次路由寻找过程。
Package discarding is occurred when no backup routings exist in node cache, and a route error message is send to source node, then a new routing discover process will begin.
对新英格兰10机39节点系统进行了潮流转移的仿真计算，验证了所提出广域后备保护方案的有效性。
Taking New England 10-unit 39-bus system as the case, the power flow transferring is simulated and simulation results show that the proposed wide area backup protection scheme is effective.
对新英格兰10机39节点系统进行了潮流转移的仿真计算，验证了所提出广域后备保护方案的有效性。
Taking New England 10-unit 39-bus system as the case, the power flow transferring is simulated and simulation results show that the proposed wide area backup protection scheme is effective.
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