Research on Development of Lightning Protection Technology for Power Grid Based on Patent Analysis[J]. High voltageapparatus, 2019, 55(9): 78-85. DOI: 10.13296/j.1001-1609.hva.2019.09.011.
Research on Development of Lightning Protection Technology for Power Grid Based on Patent Analysis
Based on the global patent data of lightning protection technology for power grid
the development status and trend of the lightning protection technology for power grid are revealed.The patent information analysis method is used to analyze the patent application situation
the technical life cycle
the technology distribution
the regional layout of technology and the latest technology development trend.The results show that the lightning protection technology for power grid has entered a mature period and the patent application decreased;patent technology mainly focused on emergency protection circuit device responsive to overvoltage
installations of lightning conductors
installation/maintenance/repair/removal methods or equipment for overhead line or cable
means for providing an external arc-discharge path
overvoltage protection resistors/arresters
and other fields;main patent layout areas are China
Japan
Russia
South Korea and the United States
the patent technology in each area has its own emphasis;improving the scope and accuracy of lightning monitoring
improving the structure and performance of the lightning arrester and multi-factor lightning protection evaluation method are the new development direction of the lightning protection technology of power grid.