Design and test of VSC assisted resonant current (VARC) DC circuit breaker

Ängquist, Lennart; Nee, Simon; Modéer, Tomas; Baudoin, Antoine; Norrga, Staffan; Belda, Nadew Adisu

doi:10.1049/cp.2019.0034

Cited by 19 publications

(17 citation statements)

References 3 publications

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“…A variety of current injection breaker, with a different injection circuit was used on the +/-160 kV Nan'ao system in China [7] and Mitsubishi have tested a 16 kA breaker [21]. An active resonant injection circuit has also been proposed, [40], [41], [42], [43]. This principle is shown in Fig.…”

Section: B Mechanical Switch -Current Injectionmentioning

confidence: 99%

HVDC Circuit Breakers–A Review

et al. 2020

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HVDC circuit breakers are of increasing importance, as multi-terminal high voltage DC (HVDC) transmission becomes a commercial reality. Multiple HVDC breaker technologies have been developed, and are starting to appear as proof-of-concept installations on real networks. Information about them is however distributed widely in the literature. This paper describes the underlying challenges, the leading candidate solutions, and discusses the requirements and construction of the component subassemblies. Its goal is to provide a comprehensive overview of the field.

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Section: B Mechanical Switch -Current Injectionmentioning

confidence: 99%

HVDC Circuit Breakers–A Review

et al. 2020

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“…The current withstand capability of all the components in the current injection branch should also match the maximum breaking current. Details about how to design and choose the parameters of the resonant circuit and other components of the VARC dc CB are presented in [24]. The maximum fault current is determined by the LDC in the DC system and the fault current rise time, which consists of the protection relay tripping time and the dc CB operating time.…”

Section: DC Circuit Breaker Modelingmentioning

confidence: 99%

“…It should be noted that the stray resistance in the oscillation branch is neglected. In practice, the oscillation current is slightly lower due to the damping by stray resistance [24].…”

Section: Oscillation Current and Current Slope At Zero-crossingmentioning

confidence: 99%

“…The VSC generates a high frequency oscillation current, the amplitude of which gradually increases every half cycle until a zero-crossing is created in the arc current. In [24], the VARC main circuit design aspects are described and the single module prototype test results are demonstrated. For an HVDC application, several VARC modules need to be connected in series in order to reach a sufficient voltage level for the full-scale circuit breaker.…”

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confidence: 99%

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Modeling, Experimental Validation, and Application of VARC HVDC Circuit Breakers

Liu

Popov

Mirhosseini

et al. 2020

IEEE Trans. Power Delivery

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This paper deals with the modelling, hardware results and model validation by measurements of a VSC assisted resonant current (VARC) dc circuit breaker (CB) and the application within a future network by simulation. The newly emerging VARC dc CB can be used as a solution for the protection of offshore multi-terminal HVDC (MTDC) grids. In this paper, the proposed VARC dc CB is modelled in detail in a PSCAD environment, by taking into account dielectric strength of the vacuum gap, high-frequency current quenching ability and parasitic components. The PSCAD-model is then verified by data from the testing of a 27 kV VARC dc CB prototype with maximum current interruption capability of 10 kA. Additionally, the initial transient interruption voltage and current slope at zero-crossing during the interruption are analyzed. With respect to scaling to a higher voltage level, three types of series connected modules are presented and the performances are compared. The performance of the series connected modules is simulated in a model of a 4-terminal HVDC grid. The obtained results validate the VARC dc CB as a promising solution for the dc fault isolation in MTDC grids. Index Terms-HVDC circuit breaker, VARC, PSCAD, circuit breaker performance, HVDC grid, transient analysis. I. INTRODUCTION HE integration of sustainable and renewable technologies is changing the existing transmission system [1]. Significant progress has been made toward the development of Voltage Source Converters (VSCs) in the last few years, which enable meshed HVDC grid to provide a promising This work has received funding from the European Commission under project 691714-PROMOTioN (Progress on Meshed HVDC Offshore Transmission Networks) through Horizon 2020 program."

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“…Extensive studies have been done on the development of HVDC CBs, and several DC CB topologies have been proposed and realized to deal with the protection matters in MTDC grids [4]- [7]. Based on different operating principles, these HVDC CBs can be divide in two categories: hybrid circuit breakers and mechanical circuit breakers.…”

Section: Introductionmentioning

confidence: 99%