Research Progress of Electromagnetic Field and Electromagnetic Compatibility of UHVDC Converter Valves

Electromagnetic field and electromagnetic compatibility are key technical problems for the development of the ultra high voltage direct current(UHVDC) converter valve.Domestic and foreign scholars have carried out systematic study in this regard.China electric power research institute(CEPRI) has successfully developed China's first ±800kV/4750A UHVDC converter valve with independent intellectual property rights and passed the type test.Through theoretical analysis,numerical calculation and measurement in tests,problems such as electromagnetic compatibility and transient electromagnetic interference have been solved by means of the three dimension electric field boundary element method.All these researches strongly support engineering application.Achievements in the above-mentioned areas are summarized.Meanwhile,some suggestions and ideas are proposed for future researches on solutions of UHVDC valve electromagnetic field.