Fault protection of metallic return circuit of Kii channel HVDC system

Hara, S.; Hirose, Masayuki; Hatano, Masayuki; Kinoshita, Shūichi; Ito, Hidenori; Ibuki, K.

doi:10.1049/cp:20010531

Cited by 13 publications

(2 citation statements)

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“…Normally, inverters are not installed close to the shore; therefore, it is always required to employ a combination of overhead transmission lines and submarine cables for offshore wind farms integration with onshore grids. Kii Channel HVdc system [71], Anan Kihoku HVdc system [72], Hokkaido Hanshu HVdc link, Japan [73] and Basslink HVdc inter-connecter system, Australia [74] are possible examples of power transmission over hybrid medium. Three-line segment model of dc-link is considered to elaborate the behavior of cables and OH line for dc fault location estimation with respect to TWs in the following section.…”

Section: Fault Location In Direct Current (Dc) Grid Having Cable and mentioning

confidence: 99%

MT–HVdc Systems Fault Classification and Location Methods Based on Traveling and Non-Traveling Waves—A Comprehensive Review

et al. 2019

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Estimation of fault classification and location in a multi-terminal high voltage direct current (MT–HVdc) transmission system is a challenging problem and is considered to be a fundamental maneuver of dc grid protection. This research paper critically reviews traveling and non-travelling wave methods of classification and location of dc faults in multi-terminal HVdc transmission systems. Detailed mathematical analysis of MT–HVdc systems composed of high grounding resistance, cable and overhead line segments, and bipolar coupled transmission network under healthy and faulty conditions, are evaluated. The gravity of this research paper addresses benefits and shortcomings of traveling and non-traveling wave methods and futuristic techniques of fault classification and location.

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Section: Fault Location In Direct Current (Dc) Grid Having Cable and mentioning

confidence: 99%

MT–HVdc Systems Fault Classification and Location Methods Based on Traveling and Non-Traveling Waves—A Comprehensive Review

et al. 2019

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“…However, it could be difficult to design High-voltage DC circuit breaker based on this scheme, since the arc voltage induced by air or SF 6 across the contacts of the breaker (several kV at maximum) limits the DC current and creates a current zero. [1], [2], [3] (b) Passive resonant current zero formation scheme This scheme can be often applied to Metallic Return Transfer Breaker (MRTB) which clears the neutral current (up to a few thousand amperes) flowing through a neutral line of a HVDC transmission system. The parallel capacitor and reactor across the circuit breaker form a passive resonant circuit that generates an expanding current oscillation with a frequency range of 1-3 kHz, which eventually leads to a current zero.…”

Section: Introductionmentioning

confidence: 99%

HVDC circuit breakers for HVDC grid applications

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Oukaili

Kamei

et al. 2015

11th IET International Conference on AC and DC Power Transmission

177

119

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High Voltage Direct Current (HVDC) transmission has been expanding due to rapid development of power electronics technology and by the need for connection of offshore/remote wind farms and large hydro power generators. An HVDC grid will be required to operate the healthy lines continuously, even if a voltage collapse occurs at the remote end. Rapid fault clearing is essential for DC Circuit Breaker (DCCB) even though the requirement varies depending on DC transmission system configurations, Voltage Source Converter (VSC) design, transmission capacity, and DC reactor connected in series with the line/cable, etc. In this paper, the requirements for DCCB were analytically evaluated using a four-terminal radial HVDC network model. The results show that DC fault interruption current and fault clearing time are achievable by using a mechanical DCCB with the forced current zero formation scheme. Furthermore, interruption performance of the mechanical DCCB composed of HV vacuum interrupter was evaluated. This DC circuit breaker successfully interrupted a current equivalent of up to 16 kA DC in the laboratory. The prototype adopts forced current zero formation scheme and comprises of a highvoltage AC vacuum circuit breaker at transmission voltages connected to an external capacitor equipped with a triggering gap. A series of interruption tests performed on this breaker verified the clearance of short circuit currents as high as 16 kA DC within a few ms after an opening command.

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