Analysis for magnetic field disturbance of hybrid DC circuit breaker during breaking

Wu, Sihang; Shen, Hong; Qi, Lei; Zhang, Bei; Cui, Xiang; Zhang, Xiangyu; Wei, Xiaoguang; Chen, Longlong

doi:10.1049/hve2.12166

Cited by 7 publications

(7 citation statements)

References 19 publications

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“…However, the waveforms in the tests show some uneven and jitter shapes, resulting in no overlap between the two kinds of waveforms. The reason for the error may be (1) The greater the pre-inflated pressure, the stronger the stress on the switch during the opening, bringing about a certain influence on the gas flow field during the opening process.…”

Section: Influence Of Gas Pressures In the Arc Extinguishing Chamber ...mentioning

confidence: 99%

Research of simulation and experiment on arc characteristics of gas mechanical switch

Jiang,

Qu,

et al. 2024

High Voltage

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An arc is the high‐temperature discharge plasma produced in the opening process of mechanical switches, which directly affects the breaking capability of a hybrid DC circuit breaker. According to the physical mechanism of an electric arc, the construction of an arc model for simulation analysis is an important technical means in the electrical field. In this study, based on the theory of magneto hydrodynamics (MHD), a gas mechanical switch model of a natural commutation DC circuit breaker with a compound gap is established. The arc motion process under different conditions is simulated and calculated. The influence of different initial pressures, different opening speeds, and different striking currents on the arc voltage characteristics is analysed. The results show that the larger the gas pressure, the smaller the arc volume and the higher the arc voltage. The faster the opening speed, the longer the arc and the higher the arc voltage; with the increase of the current, the arc voltage increases rapidly at a low current, while the arc voltage increases slowly at a high current.

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Section: Influence Of Gas Pressures In the Arc Extinguishing Chamber ...mentioning

confidence: 99%

Research of simulation and experiment on arc characteristics of gas mechanical switch

Jiang,

Qu,

et al. 2024

High Voltage

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“…It is found that by integrating the SFCL with the solid-state DC circuit breaker, a high voltage is induced across the high inductance SFCL during current interruption tests. The commutation switches of main breaker utilizing IGBTs to commute and break fault current will increase the cost of power electronic components and HDCCBs 24 , 25 . Integrated-gate-commutated-thyristors (IGCTs) have the advantages of high rated current, fast commutation speed, high interference immunity, low cost, and high reliability, and thus have been widely used in DC power grids 26 .…”

Section: Introductionmentioning

confidence: 99%

A novel controllable capacitor commutation based superconducting hybrid direct current breaker

Xu,

Junaid,

et al. 2024

Sci Rep

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Featuring low power loss and high reliability, voltage source converter medium voltage direct current (VSC-MVDC) systems have been widely employed for grid-tied renewable energy applications. To maintain high operational safety, circuit breakers are needed to isolate faulted powerlines by comprehensively considering response speed and installation cost. Research efforts have been put to realizing DC fault isolation by coordinating resistive type superconducting fault current limiter (R-SFCL) and integrated-gate-commutated-thyristor (IGCT) based hybrid DC circuit breaker. In this paper, a controllable current commutation based superconducting DC circuit breaker (CCCB-SDCCB) is proposed. By integrating R-SFCL with IGCT based hybrid DC circuit breakers, the current interrupting capacity can be greatly enlarged with the advantage of low cost and fast speed, and hence the overall cost for suppress large fault currents can be greatly reduced for MVDC systems. In addition, a new current injection circuit branch using H-bridge structure is designed to recycle the residual capacitor voltage from the previous fault stage to trigger the IGCTs without the capacitor pre-charging process. Simulation results show that the fault current can be successfully suppressed from 24.2 to 2.1 kA and fully interrupted within 4.11 ms by the proposed CCCB-SDCCB.

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“…However, in the topology, both the line commutation switch and the main circuit breaker use the mirrored pair configuration of insulated gate bipolar transistors (IGBTs) to commutate and interrupt the fault current. This significantly increases the cost of power electronic components and hybrid circuit breakers [17,18]. The integrated gate commutated thyristor (IGCT) has a high inrush current and low cost.…”

Section: Introductionmentioning

confidence: 99%

Simulation study of integrated‐gate‐commutated‐thyristor based superconducting hybrid direct current circuit breaker

et al. 2023

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With the development of a distributed generation, direct current (DC) load and energy‐storage equipment, voltage‐source‐converter‐based medium‐voltage DC systems (VSC‐MVDC) have attracted more attention due to its low power consumption, high reliability, independent power control and so on. However, VSC‐MVDC has the problem of DC fault isolation, which requires the fast‐acting DC circuit‐breakers to isolate faulty lines and ensure low cost. This problem can be solved by coordinating resistive type superconducting‐fault‐current‐limiter (R‐SFCL) and integrated‐gate‐commutated‐thyristor (IGCT) based hybrid circuit breaker. Based on this, IGCT based superconducting DC circuit breaker (SDCCB) is proposed and analysed. Combining R‐SFCL with IGCT could realise large current limiting and interruption and ensure low cost. In addition, the IGCT based hybrid DC circuit breaker (IGCT‐HDCCB) is compared with the traditional insulated gate bipolar transistor (IGBT) based hybrid DC circuit breaker (IGBT‐HDCCB) to evaluate which circuit breaker is more suitable for VSC‐MVDC. The results show that, coordination based on R‐SFCL and SDCCB, the fault current is successfully limited from 17.6 to 2.1 kA, and then interrupted within 3.8 ms. In addition, IGCT‐HDCCB overcomes the disadvantage that IGCT has less interrupting capacity than IGBT, retains the advantage of low cost of IGCT and is more suitable for MVDC system.

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Analysis for magnetic field disturbance of hybrid DC circuit breaker during breaking

Cited by 7 publications

References 19 publications

Research of simulation and experiment on arc characteristics of gas mechanical switch

Research of simulation and experiment on arc characteristics of gas mechanical switch

A novel controllable capacitor commutation based superconducting hybrid direct current breaker

Simulation study of integrated‐gate‐commutated‐thyristor based superconducting hybrid direct current circuit breaker

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