摘要：【中文】本发明公开了一种线路保护行波测距方法，包括根据采集的工频数据、行波数据进行故障检测，判断是否进行保护启动和行波启动；响应于保护启动和行波启动，进行保护测距、根据保护选相进行行波波头时刻计算；根据本端行波波头时刻、行波参数和采集的线路对端行波波头时刻，进行行波测距；将所有测距结果进行比较，选择最优的作为最终测距结果。同时也公开了相应的装置。本发明将保护启动和行波启动进行结合，即只有两者都启动，才进行后续的测距，有效防止启动频繁触发数据存储造成有效数据覆盖；同时本发明基于保护选相进行行波测距，降低了行波测距的复杂度，提高了稳定性。 【EN】The invention discloses a line protection traveling wave distance measurement method which comprises the steps of carrying out fault detection according to collected power frequency data and traveling wave data, and judging whether protection starting and traveling wave starting are carried out or not; responding to protection starting and traveling wave starting, performing protection ranging, and performing traveling wave head moment calculation according to protection phase selection; performing traveling wave ranging according to the wave head time of the traveling wave at the home terminal, the traveling wave parameters and the collected wave head time of the traveling wave at the opposite terminal of the line; and comparing all the ranging results, and selecting the optimal ranging result as the final ranging result. A corresponding apparatus is also disclosed. According to the invention, protection starting and traveling wave starting are combined, namely, subsequent ranging is carried out only when both are started, so that effective data coverage caused by frequently triggering data storage during starting is effectively prevented; meanwhile, the traveling wave ranging is carried out based on protection phase selection, so that the complexity of the traveling wave ranging is reduced, and the stability is improved.

摘要：【中文】本发明公开了一种柔性直流配电网故障定位方法，在直流配电网中设置直流母线保护区、直流线路保护区，在直流母线保护区、直流线路保护区中的开关均设置保护装置，所有保护装置均通过高速通信网相连接；当差动保护正常时，采用差动保护进行故障定位，当差动保护退出时，采用基于多点方向的综合故障定位方法进行故障定位。本发明解决了直流配电网应用的网络化保护动作延时较长问题；解决了差动保护异常无法工作时，直流配电网失去后备保护的问题；解决了直流配电网过电流启动灵敏性和整定配合简易性不能同时兼备的问题。 【EN】The invention discloses a fault positioning method for a flexible direct-current power distribution network, wherein a direct-current bus protection area and a direct-current line protection area are arranged in the direct-current power distribution network, switches in the direct-current bus protection area and the direct-current line protection area are provided with protection devices, and all the protection devices are connected through a high-speed communication network; when the differential protection is normal, the differential protection is adopted for fault location, and when the differential protection exits, a comprehensive fault location method based on multipoint directions is adopted for fault location. The invention solves the problem of longer delay of networked protection action of the application of the direct current distribution network; the problem that the backup protection of the direct-current power distribution network is lost when the differential protection is abnormal and cannot work is solved; the problem that the over-current starting sensitivity and the setting matching simplicity of the direct-current power distribution network cannot be simultaneously achieved is solved.