Abstract:In order to solve the on-site calibration problem of traveling wave distance measuring equipment (TWDME),This paper discusses the traveling wave distance measuring principle of TWDME, and analyzes the double-ended distance measuring method, studies the characteristics of fault traveling wave signal and the influence of secondary transmission circuit such as current transformer and secondary cable on fault traveling wave transmission, A set of on-site calibration platform and method for TWDME is explored. Testing platform mainly includes fault traveling wave reproducing device based on high-frequency linear current amplifier, electromagnetic transient simulation software and a GPS satellite synchronous device. As a fault traveling wave reproducing device,the high-frequency linear current amplifier can at least simultaneously output multi-channel high frequency current and equip with a GPS satellite synchronization system, as well as a fault simulation system based on electromagnetic transient simulation software considering the secondary transmission loop. The test results verify the feasibility and correctness of site verification the platform and method. The on-site verification of TWDME can effectively discover the technical defects, and detect the accuracy and reliability of TWDME.