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 |