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    • 1. 发明申请
    • Oil filtration system for plural phase power equipment tanks
    • 多相电力设备罐油过滤系统
    • US20050109076A1
    • 2005-05-26
    • US10994658
    • 2004-11-22
    • David ButlerJohnny Clark
    • David ButlerJohnny Clark
    • G01N33/18H01F27/14H01F27/40
    • H01F27/14H01F27/402Y10T137/85978
    • Insulating oil in electric power generation, transmission and distribution equipment such as circuit breakers, regulators, phase shifters, tank diverter switches and capacitor banks for respectively separated phases of a plural phase transmission or distribution line is filtered for removal of accumulated water, carbon particles and other contaminants by filters in oil circuits respective to each phase in the plurality. Each oil circuit respective to each circuit breaker includes a respective filter and circulation pump. However, all pumps in the plural phase power system, for example, are driven by the same motor and drive line whereby a fluid condition or circulation interruption of one oil circuit that requires termination of pump operation in the one oil circuit terminates the pump operation in all oil circuits. Pump motor power is preferably drawn from an energy source that may be independent of that served by the transmission and/or distribution power source.
    • 在多相传输或分配线分别分相的发电,输配电设备如断路器,调压器,移相器,水箱切换开关和电容器组中的绝缘油被过滤以除去积聚的水,碳颗粒和 其它污染物通过油相回路中的过滤器分别相应于各个相。 各断路器的各油路包括各自的过滤器和循环泵。 然而,例如,多相电力系统中的所有泵由相同的电动机和驱动线驱动,由此一个油回路的流体状况或循环中断需要终止在一个油循环中的泵运行终止泵操作 所有油路。 泵电机功率优选地来自可以与传输和/或分配电源所服务的能量独立的能量源。
    • 10. 发明申请
    • Intrusion Detection in Optical Fiber Networks
    • 光纤网络入侵检测
    • US20080018884A1
    • 2008-01-24
    • US11624330
    • 2007-01-18
    • David ButlerScott ThompsonLev Sofman
    • David ButlerScott ThompsonLev Sofman
    • G01N21/00
    • H04B10/85
    • A method for intrusion detection in an optical fiber communication network. The method includes at a first location on an optical fiber segment, receiving a set of multiple optical signals having wavelengths differing from each other, measuring received signal power for each of the received multiple optical signals, and repeating the receiving and the measuring steps. Each optical signal in the repeated steps has same wavelength as corresponding received optical signal in the initial steps. The method further includes computing a signal power loss between each received optical signal in the repeated set and the corresponding optical signal in the initial set, fitting a curve of signal power loss vs. wavelength to the computed signal power losses using a statistical analysis, and if the signal power loss of the curve over a preselected wavelength band is at least as great as a preselected minimum loss level, providing intrusion notification.
    • 一种光纤通信网络入侵检测方法。 该方法包括在光纤段上的第一位置处,接收一组具有彼此不同的波长的多个光信号,测量接收到的多个光信号中的每一个的接收信号功率,并重复接收和测量步骤。 重复步骤中的每个光信号在初始步骤中具有与对应的接收光信号相同的波长。 该方法还包括计算重复集合中每个接收到的光信号与初始集合中对应的光信号之间的信号功率损耗,使用统计分析将信号功率损耗与波长的曲线拟合到计算出的信号功率损耗;以及 如果在预选波长带上的曲线的信号功率损耗至少与预选的最小损耗水平一样大,则提供入侵通知。