面向新型电力系统的高电压计量技术研究进展及展望OA

The new power system incorporates a large number of renewable energy generation systems,thus higher re-quirements on the real-time performance,accuracy,and reliability of measurement technologies are put forward.High-voltage metrology,as a critical underpinning for ensuring the safe and stable operation of power systems,is con-fronted with new development opportunities and challenges.This paper reviews the current state of research in high-voltage metrology and provides an in-depth analysis of the mainstream technical approaches in areas including novel techniques for quantity traceability and dissemination,online metrology in complex electromagnetic environments,and ultra-high-voltage(UHV)testing.Furthermore,specific key techniques are summarized,including precise time synchro-nization,high-voltage remote calibration,integrated calibration platform of analog and digital quantities,ultra-fast transient overvoltage measurement,low power factor loss measurement,and voltage linearity assessment of ul-tra-high-voltage measurement systems.The advantages and disadvantages of existing technologies and their application scopes are analyzed,and future development trends in high-voltage metrology technologies are elucidated,including more efficient online calibration methods,expanded applications of optical instruments in the high-voltage domain,intel-ligent measurement based on new sensors,etc.Finally,recommendations are made for further developments of high-voltage metrology technologies oriented toward the new power system,aiming to provide a reference for the re-search and applications in the related fields.