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    • 3. 发明申请
    • ROTATING MACHINE SHAFT SIGNAL MONITORING METHOD AND SYSTEM
    • 旋转机轴信号监测方法与系统
    • WO2010070465A1
    • 2010-06-24
    • PCT/IB2009/054040
    • 2009-09-16
    • ESKOM HOLDINGS (PTY) LTDHIGGINS, Simon
    • HIGGINS, Simon
    • G01R31/34
    • G01R31/343
    • This invention relates to a method of and system for monitoring shaft signals associated with a shaft of a rotating machine. The method comprising receiving voltage signals associated with the shaft; receiving current signals associated with the shaft; determining, from the received voltage and current signals, voltage and current data relating to the machine; presenting at least some of the determined voltage and current data to a user; trending at least the determined voltage data to at least determine voltage data trends associated with the machine; and determining from the voltage and current data if a fault condition has occurred and generating an alarm signal or condition in response thereto.
    • 本发明涉及一种用于监测与旋转机器的轴相关联的轴信号的方法和系统。 所述方法包括接收与所述轴相关联的电压信号; 接收与轴相关的电流信号; 从接收到的电压和电流信号确定与机器有关的电压和电流数据; 向用户呈现所确定的电压和当前数据中的至少一些; 至少确定所确定的电压数据以至少确定与所述机器相关联的电压数据趋势; 并且根据电压和电流数据确定是否发生了故障状况并响应于此产生报警信号或状况。
    • 5. 发明申请
    • PARTIAL DISCHARGE MONITOR
    • 部分排放监测
    • WO2010023570A1
    • 2010-03-04
    • PCT/IB2009/053176
    • 2009-07-22
    • ESKOM HOLDINGS (PTY) LTDHIGGINS, Simon
    • HIGGINS, Simon
    • G01R31/12
    • G01R31/1272
    • This invention relates to high voltage electrical or power systems and in particular to a method and device for monitoring partial discharges in high voltage electrical or power systems. The method comprises defining a low trigger level and a high trigger level electrical pulse amplitude levels, monitoring at least one phase of the electrical system for an occurrence of a pulse within a defined minor time frame; detecting a peak amplitude of a pulse occurring in the electrical system within the minor time frame; determining if the detected peak amplitude of the pulse exceeds the lower and higher trigger levels; assigning a pulse number to the pulse if the peak amplitude of the pulse exceeds the trigger levels; capturing the pulse if the pulse number associated with the pulse is less than a predetermined pulse number threshold in the minor time frame; and storing the captured pulses in a memory.
    • 本发明涉及高压电力或电力系统,特别涉及用于监测高压电力或电力系统中的局部放电的方法和装置。 该方法包括定义低触发电平和高触发电平电脉冲幅度电平,监测电气系统的至少一个相位,用于在限定的次要时间帧内发生脉冲; 检测在该次要时间帧内在电气系统中出现的脉冲的峰值幅度; 确定检测到的脉冲峰值幅度是否超过较低和较高的触发电平; 如果脉冲的峰值幅度超过触发电平,则为脉冲分配脉冲数; 如果与该脉冲相关联的脉冲数在小时间帧内小于预定的脉冲数阈值则捕获该脉冲; 并将所捕获的脉冲存储在存储器中。
    • 6. 发明申请
    • TIME DOMAIN ELECTROMAGNETIC INTERFERENCE MONITORING METHOD AND SYSTEM
    • 时域电磁干扰监测方法与系统
    • WO2010103354A1
    • 2010-09-16
    • PCT/IB2009/054089
    • 2009-09-18
    • ESKOM HOLDINGS (PTY) LTDHIGGINS, Simon
    • HIGGINS, Simon
    • G01R29/08G01R31/00G01R27/28G01R23/16
    • G01R29/0892G01R23/16G01R29/0814
    • This invention relates to a method of, and a system for, monitoring electromagnetic interference. The method comprising capturing a plurality of time domain waveforms, and a plurality of scatter plots; receiving the plurality of captured time domain waveforms and scatter plots; applying a fast fourier transform (FFT) to each of the received time domain waveforms as it is received thereby to receive FFT outputs; storing the FFT outputs in a database; generating a statistically representative spectrograph or spectrogram in the frequency domain based on at least the stored FFT outputs and scatter plots or data associated with the scatter plots, combining constituent FFTs of the statistically representative spectrograph or spectrogram in such a manner as to emulate the result that would be produced by an EMI (Electromagnetic Interference) receiver or spectrum analyser; and combining resultant outputs from a number of iterations of this process to produce a final result (EMI spectrum).
    • 本发明涉及一种用于监测电磁干扰的方法和系统。 该方法包括捕获多个时域波形和多个散点图; 接收多个捕获的时域波形和散点图; 对接收的时域波形中的每一个应用快速傅立叶变换(FFT),从而接收FFT输出; 将FFT输出存储在数据库中; 至少基于所存储的FFT输出和散点图或与散点图相关联的数据,在频域中产生统计学上代表性的光谱仪或频谱图,以统计代表性的光谱仪或光谱图的组合FFT组合,以模拟结果 将由EMI(电磁干扰)接收机或频谱分析仪产生; 并且将来自该过程的多次迭代的结果输出组合以产生最终结果(EMI频谱)。