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Topology-based Bus Voltage Differential Protection Blocking Project
Author(s): 
Pages: 38-41
Year: Issue:  5
Journal: HYDROPOWER AUTOMATION AND DAM MONITORING

Keyword:  拓扑原理母线差动保护开入量闭锁;
Abstract: 基于拓扑原理的数字式母线差动保护是将开关、刀闸、电流互感器等辅助信号输送给保护的中央控制单元,形成母线保护映像.由于一次系统倒闸操作及二次回路设备运行状况所限,不可避免会造成二进制输入状态的多种不确定性.针对参与形成母线保护映像的各个拓扑项,分析了影响母线保护逻辑判断的诸多因素,并对隔离刀闸告警、母线差流告警等进行约定,较好地解决了母线差动保护闭锁方案.运行实践和应用结果表明,该保护拓扑原理的应用达到了预期的效果.
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