Research and experiment of a current‐limiting HVDC circuit breaker

Autor: Kangli Xiang, Yi Du, Hongyang Lin, Junpeng Deng, Huan Zheng, Yu Shen
Rok vydání: 2018
Předmět:
Computer science
power transmission reliability
Energy Engineering and Power Technology
Series and parallel circuits
HVDC power convertors
operating speed
power transmission control
buffer circuit
parallel connection
short-circuit faults
Circuit breaker
stored energy circuit
current-limiting HVDC circuit breaker
switching convertors
business.industry
hybrid HVDC CB
instantaneous trigger solid-state switch
General Engineering
Buffer amplifier
Electrical engineering
breaking speed
HVDC power transmission
electronic switching devices
fault pretreatment
mechanical HVDC circuit breakers
power grids
short-circuit currents
series connection
reliable HVDC grid
Current limiting
fault current limiters
HVDC currents
control strategy
equalising circuit
lcsh:TA1-2040
circuit breakers
lcsh:Engineering (General). Civil engineering (General)
Operating speed
business
Software
Zdroj: The Journal of Engineering (2019)
ISSN: 2051-3305
DOI: 10.1049/joe.2018.8724
Popis: Existing mechanical HVDC circuit breakers (CB) are capable of interrupting HVDC currents within several tens of milliseconds, but this is too slow to satisfy the requirements of a reliable HVDC grid. HVDC CB based on semiconductors can easily overcome the limitations of operating speed, but need large number of the series (parallel) connection of electronic switching devices. To overcome these shortcomings, this paper introduces a topology of hybrid CB; this paper first describes the principle of hybrid CB; then a control strategy of fault pre-treatment is also proposed, that is, the ‘pre-action and action (or recovery)’ of the switches, in order to improve the breaking speed of the hybrid CB and the equalising circuit of its solid-state switch has been designed. The proposed topology and control strategy do not produce loss in the normal operation of CB, and instantaneous trigger solid-state switch with quickly cutting short-circuit current during short-circuit faults; at last the simulation and experiment of the hybrid HVDC CB have also been done. The results turn out when a short circuit occurs, the hybrid HVDC CB can quickly break the short-circuit current; the buffer circuit can be provided for the release of the stored energy circuit.
Databáze: OpenAIRE
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