HVDC By-pass switch commutation characteristic using gas circult breaker
نویسندگان
چکیده
منابع مشابه
Mitigation of commutation faults in HVDC system
To transfer large amount of direct current power having high amplitude voltage over long distance, high voltage direct current (HVDC) transmission system is used. This system was introduced 60 year ago and now it is widely used all over the world. Some examples of HVDC systems are following; Voltage-SourcedConverter (VSC), current commutated converter (CCC) and line commutated converter (LCC) d...
متن کاملThe Hybrid HVDC Breaker An innovation breakthrough enabling reliable HVDC grids
Existing mechanical HVDC breakers are capable of interrupting HVDC currents within several tens of milliseconds, but this is too slow to fulfill the requirements of a reliable HVDC grid. HVDC breakers based on semiconductors can easily overcome the limitations of operating speed, but generate large transfer losses, typically in the range of 30 percent of the losses of a voltage source converter...
متن کاملDecreasing the Commutation Failure Frequency in HVDC Transmission Systems
In this paper we show how a fairly large proportion of those commutation failures that are due to single-phased short circuits to earth can be avoided. In a control circuit based on a digital signal processor (DSP) it is possible, with instantaneous results, to switch from a normal control strategy with equidistant firing pulses to a strategy that takes into consideration the potentially danger...
متن کاملA Novel Topology of Hybrid HVDC Circuit Breaker for VSC-HVDC Application
Van-Vinh Nguyen 1, Ho-Ik Son 1, Thai-Thanh Nguyen 1 ID , Hak-Man Kim 1,2,* and Chan-Ki Kim 3 1 Department of Electrical Engineering, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Korea; [email protected] (V.-V.N.); [email protected] (H.-I.S.); [email protected] (T.-T.N.) 2 Research Institute for Northeast Asian Super Grid, Incheon National University, 119 Academy-ro, Yeo...
متن کاملNumerical Simulation of an Explosively Driven HVDC Circuit Breaker
High Voltage Direct Current (HVDC) circuit breakers have to suppress high values of currents at high voltages in absence of current-zero points. This makes the arc interruption more severe than the case of conventional AC networks. For circuit breaking in HVDC networks, a capacitor-inductor set has been inserted in parallel with the circuit breaker to inject reverse current to the interruption ...
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ژورنال
عنوان ژورنال: IEEJ Transactions on Power and Energy
سال: 1995
ISSN: 0385-4213,1348-8147
DOI: 10.1541/ieejpes1990.115.11_1373