发明名称 Systems, methods, and apparatus for locating faults on an electrical distribution network
摘要 Certain embodiments of the invention include systems, methods, and apparatus for locating faults on an electrical distribution network. According to an example embodiment of the invention, a method is provided for locating faults on an electrical distribution network. The method can include monitoring, by one or more smart meters, a plurality of voltage values associated with the electrical distribution network; and when one or more of the plurality of monitored voltage values are detected to be less than or equal to a predetermined voltage for a specified time: storing at least a portion of monitored line voltage values; indicating a detected fault by transmitting one or more messages from the one or more smart meters or line sensors to a central station receiver, and determining a fault location based at least in part on the one or more messages and a topological and electrical model of the electrical distribution network.
申请公布号 US8810251(B2) 申请公布日期 2014.08.19
申请号 US201113222808 申请日期 2011.08.31
申请人 General Electric Company 发明人 Koliwad Ajay;Adamiak Mark
分类号 G01R31/08 主分类号 G01R31/08
代理机构 Sutherland Asbill & Brennan LLP 代理人 Sutherland Asbill & Brennan LLP
主权项 1. A method for locating faults on an electrical distribution network, the method comprising: monitoring, by one or more smart meters, a plurality of voltage values associated with the electrical distribution network; detecting transient under voltage conditions associated with a power system fault by measuring and computing RMS or phasor magnitude of a fundamental voltage component once every cycle; when one or more of the plurality of monitored voltage values indicate a power system fault: storing at least a portion of monitored line voltage values; formatting a fault voltage profile; indicating a detected fault by transmitting one or more last gasp messages with a fault voltage profile immediately prior to loss of power from the one or more smart meters or line sensors to a central station receiver, wherein the one or more last gasp messages comprise the monitored and stored line voltage values and line current values; receiving transmitted messages at the central station receiver;determining the last gasp messages with the fault voltage profile;sequencing the received last gasp messages with the fault voltage profile in order of electrical connectivity;assigning a node that is closest to a distribution substation as an original root node;inspecting the line voltage values from all the meters that are electrically adjacent to the original root node;determining an electrically adjacent meter that has the lowest line voltage value;promoting the electrically adjacent meter to a new root node;continue promoting, by an iterative process, the meter that has the lowest line voltage value that is electrically adjacent to the new root node until a new root node cannot be found; anddetermining a fault location to be between a last determined root node and a next electrically adjacent meter.
地址 Schenectady NY US