4 results about "Pollution flashover" patented technology

The invention relates to a method, a system and a device for measuring and calculating the external insulation pollution degree of an electric transmission and transformation device, wherein a spot pollutant accumulation measuring device automatically measures the electrical conductivity of pollutants by utilizing a conduction electrode on the surface of a simulation shed, data is transmitted into a central server for measuring and calculating the pollution degree and is converted into the equivalent salt density, the accumulation amount of external insulation pollutants before and after each rainfall can be measured immediately, and the accumulation amount on the external insulation surface pollutants at a measuring site is predicted according to the pollutant accumulation velocity so as to early warn the pollution flashover risk of the device.

The invention discloses a system and a method for monitoring creepage, pollution flashover and flashover phenomena of an insulator, and the method comprises the following steps: sound collection: collecting a sound signal emitted by the insulator through a pickup device; voiceprint feature extraction and transmission: converting the collected sound signals into voiceprint feature vectors and transmitting the voiceprint feature vectors to a background algorithm server; data research and judgment analysis, wherein the background algorithm server converts the received voiceprint feature vector into a voiceprint feature change curve and carries out research and judgment analysis; and terminal processing: the PC terminal or the mobile terminal receives the research and judgment analysis result of the background algorithm server, and sends out early warning information when judging that creepage, pollution flashover and flashover are abnormal. By adopting the method, the monitored insulator does not need to be contacted, the working state of the insulator is not influenced, the method is not influenced by high voltage and a strong electromagnetic field, whether the insulator has creepage, pollution flashover and flashover abnormities or not can be timely and accurately monitored, and the method has the advantages of good identification performance, high practicability, low false alarm rate and low monitoring cost.