The principle of "phase-by-phase compensation" is put forward for the first time, which jumps out of the category of traditional single relay and organically combines the measurement technology of impedance relay with phase selection technology. Firstly, the relationship between resistance change and time during oscillation is deduced, which can distinguish oscillation and short circuit well. Firstly, the "virtual current" technology is proposed, which equates 20 ~ 30 complex currents to two simple currents, which is very beneficial to the discrimination of TA saturation, and can discriminate the extreme saturation of 2 ~ 3 ms, making the complicated calculation and discrimination more simple, effective and reliable.
He won five invention patents, the National Science and Technology Progress Award 1, two provincial and ministerial-level science and technology progress awards, the third prize 1, the first prize for teaching achievements of the Ministry of Electric Power 1, the first prize for scientific and technological progress of the Education Commission of Hebei Province 1, and won the "special government allowance of the State Council" and "Top Ten Outstanding Science and Technology Youth in Hebei Province".
He published a large number of papers in important journals at home and abroad, and co-edited with Academician Yang Qixun the textbook Fundamentals of Microcomputer Relay Protection (second and third editions) in colleges and universities, and was awarded the "Eleventh Five-Year Plan" national textbook and Beijing excellent textbook.
Masterpiece: Fundamentals of Microcomputer Relay Protection (China Electric Power Press)
Power System Fault Analysis (3rd Edition, China Electric Power Press)