ISSN 1674-0629
CN 44-1643/TK
CN 44-1643/TK
Research of Hybrid HVDC Circuit Breaker Based on Inductance Coupling Circuit
Tiehan CHENG , Na JIA , Jianying ZHONG , Shutong GAO , Jian FENG , Jingwei LU
›› 2018, Vol. 12 ›› Issue (2) : 64 -69.
Research of Hybrid HVDC Circuit Breaker Based on Inductance Coupling Circuit
With the development of DC transmission and renewable energy technology, it has become a trend to construct a larger scale DC transmission network. At present, with the rapid development of multi-terminal VSC-HVDC transmission technology, the characteristics of DC circuit breaker, the core equipment, directly determine the reliability of DC power grid. Based on the above situation, a hybrid DC circuit breaker based on inductance coupling circuit is proposed, its basic principle is introduced, the mathematical model of inductance coupling circuit and the design method of power electronic components are given. Finally, aiming at the topology of hybrid DC circuit breaker designed in this paper, a simulation model is built in PSCAD/EMTDC. The feasibility of the technical scheme of DC circuit breaker based on inductance coupling circuit and the correctness and validity of the test circuit are verified by the prototype test. The switching-off current of the prototype is more than 9 kA.
hybrid DC circuit breaker / test method / power electronics components / fast mechanical switch / inductance coupling circuit
Science and Technology Project of State Grid Corporation of China(PGKJ2015-068)
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