公开(公告)号：US10083709B2

公开(公告)日：2018-09-25

申请号：US15323407

申请日：2015-01-15

申请人： STATE GRID JIANGSU ELECTRIC POWER COMPANY NANJING POWER SUPPLY COMPANY ,  STATE GRID JIANGSU ELECTRIC POWER COMPANY ,  STATE GRID COMPANY CORPORATION OF CHINA ,  Hohai University

发明人： Ning Jiang ,  Hongzhong Ma ,  Kai Li ,  Honghua Xu ,  Chunning Wang ,  Bingbing Chen ,  Hongyu Jiang

IPC分类号： G10K11/178 ,  G10L21/0232 ,  G06N3/02 ,  H01F27/33 ,  G06F17/11 ,  G06N3/04 ,  G06N3/08 ,  G06N5/04 ,  H04R3/00 ,  H04R3/04

CPC分类号： G10L21/0232 ,  G06F17/11 ,  G06N3/006 ,  G06N3/02 ,  G06N3/04 ,  G06N3/08 ,  G06N3/084 ,  G06N5/04 ,  G06N7/005 ,  G10K11/1785 ,  G10K11/17881 ,  G10K2210/125 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3038 ,  H01F27/33 ,  H04R3/005 ,  H04R3/04 ,  H04R2410/05

摘要： The noise suppression method of individual active noise reduction system comprises the steps that: (1) initial noise digital signals are received and converted to serve as input signals of a BP neural network; (2) the input signals are processed to generate secondary digital signals; (3) the secondary digital signals are output to a loudspeaker and secondary noise is generated; (4) remained noise digital signals obtained by overlapping the initial noise and the secondary noise are received; whether remained noise digital signals is continuously constant for the set times is judged; if yes, the secondary digital signals are kept outputting; (5) if not, BP neural network parameters are optimized and adjusted with the amplitude of the remained noise digital signals being minimum as the optimality principle; remained noise digital signals of previous step are served as new input signals and the step (2) is executed again.

公开(公告)号：US10422715B2

公开(公告)日：2019-09-24

申请号：US15424770

申请日：2017-02-03

申请人： STATE GRID JIANGSU ELECTRIC POWER COMPANY NANJING POWER SUPPLY COMPANY ,  Hohai Univeristy ,  STATE GRID JIANGSU ELECTRIC POWER COMPANY

发明人： Chunning Wang ,  Honghua Xu ,  Hongzhong Ma ,  Kai Li ,  Baowen Liu ,  Yong Li ,  Bingbing Chen ,  Yangliu Cui

IPC分类号： G01M3/24

摘要： The present invention relates to a leak detection method for GIS based on vibration signals and belongs to the technical field of apparatus for detecting or reacting mechanical or electrical troubles. The method is carried out by the following steps: 1) Installing a vibration sensor on each connecting flange of each gas-tight chamber of the GIS; 2) Starting the GIS; 3) Acquiring the vibration signals of sensors when the GIS operation is stable after starting; 4) Doing de-noise processing on the collected vibration signal; 5) Doing 4-layer wavelet packet decomposition of the vibration signal after noise reduction to obtain the energy proportion of the vibration signal in each frequency band; 6) Analyzing the energy proportion of the vibration signal in each frequency band in step 5), Then alarm to notify the relevant personnel. Return to step 3) until the fault has been solved.