A natural commutation current topology of hybrid HVDC circuit breaker integrated with limiting fault current

Zhang, Xiong; Zhuo, Chaoran; Yang, Xu

doi:10.1049/gtd2.12760

Cited by 4 publications

(4 citation statements)

References 23 publications

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“…The H-DCCB topology provides an overview of the hybrid DC circuit breaker, which can be viewed as an extension of an IGBT-based solid-state topology. The utilization of thyristors in the design enables this topology to be appropriate for HVDC circuit breaker designs, as it can handle large voltage and current levels effectively [38][39][40][41][42][43]. The breaker includes an additional branch with a mechanical low resistance ultra-fast disconnector (UFD) and a load commutation switch (LCS).…”

Section: Circuit Breaker Topologiesmentioning

confidence: 99%

DC Circuit Breaker Evolution, Design, and Analysis

Moradian,

Lie,

Gunawardane

2023

Energies

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While traditional AC mechanical circuit breakers can protect AC circuits, many other DC power distribution technologies, such as DC microgrids (MGs), yield superior disruption performance, e.g., faster and more reliable switching speeds. However, novel DC circuit breaker (DCCB) designs are challenging due to the need to quickly break high currents within milliseconds, caused by the high fault current rise in DC grids compared to AC grids. In DC grids, the circuit breaker must not provide any current crossing and must absorb surges, since the arc is not naturally extinguished by the system. Additionally, the DC breaker must mitigate the magnetic energy stored in the system inductance and withstand residual overvoltages after current interruption. These challenges require a fundamentally different topology for DCCBs, which are typically made using solid-state semiconductor technology, metal oxide varistors (MOVs), and ultra-fast switches. This study aims to provide a comprehensive review of the development, design, and performance of DCCBs and an analysis of internal topology, the energy absorption path, and subcircuits in solid-state (SS)-based DCCBs. The research explores various novel designs that introduce different structures for an energy dissipation solution. The classification of these designs is based on the fundamental principles of surge mitigation and a detailed analysis of the techniques employed in DCCBs. In addition, our framework offers an advantageous reference point for the future evolution of SS circuit breakers in numerous developing power delivery systems.

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Section: Circuit Breaker Topologiesmentioning

confidence: 99%

DC Circuit Breaker Evolution, Design, and Analysis

Moradian,

Lie,

Gunawardane

2023

Energies

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“…The CLCB integrates isolating fault and limiting fault currents into a single device, reducing the cost of SCPE. According to the current limiting mechanism, the published short circuit protection equipment for the MTDC grid can be divided into MOA-type current limiting circuit breaker (CLCB) (Hedayati and Jovcic, 2018;Song et al, 2019), inductance type CLCB (Heidary et al, 2020;Wang et al, 2020) and capacitor type CLCB (Wu et al, 2020;Wu et al, 2022;Zhang et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

A DC fault current fast-computing method of MMC-HVDC grid with short circuit protection equipment

Zhang,

Yang,

Zhuo

2024

Front. Energy Res.

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The multi-terminal modular multi-level converter-based high voltage direct current (MMC-HVDC) grid with short circuit protection equipment (SCPE) is so complex that it is difficult to estimate its fault current and analyze the performance of SCPE by conventional time-domain numerical calculation method, it meets three big obstacles. This paper has made significant progress in overcoming these obstacles. 1). By applying the modern electrical circuit theory, a systematic formulation of the differential equation set for fault current calculation is developed to avoid a lot of complex and cumbersome matrix manual calculations. 2). A novel Y-Delta transformation in the s-domain is proposed to develop an eliminating virtual node approach for a complex MMC-HVDC grid, including the ring, radial, and hybrid topologies. 3). It is difficult to solve the equivalent circuit of MMC-HVDC grid with SCPE since SCPE is a time-variable-nonlinear circuit. A canonical voltage source model of SCPE is established to transform the time-variable-nonlinear circuit into a piecewise linear circuit. Based on the three significant progresses, a DC fault current fast-computing method of MMC-HVDC grid with SCPE is put forward to deal with all kinds of MMC-HVDC grids with several kinds of SCPEs. Then, the performance of several kinds of SCPE is analyzed and compared by this method. Consequently, the proposed DC fault current fast-computing method is a new powerful tool to estimate the fault current of MMC-HVDC grid and analyze the performance of SCPE.

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“…The effect of changing parameters with hybrid circuit breaker topology combining mechanical and solid state switches were investigated in [36]. A natural commutation current topology used for hybrid HVDC was combined with fault current limiter in [37]. The impact of such topology upon fault current rising slope was studied [37].…”

mentioning

confidence: 99%

“…A natural commutation current topology used for hybrid HVDC was combined with fault current limiter in [37]. The impact of such topology upon fault current rising slope was studied [37]. Also, a proposed reactor based hybrid DC circuit breaker had shown to reduce the rising rate and peak of the fault current [39].…”

mentioning

confidence: 99%

Parameterization of Circuit Breakers for HVDC Transmission Line Between Egypt and the Kingdom of Saudi Arabia Toward Restriking Voltage

Eliyan,

Elsisi,

Alghaythi

et al. 2024

IEEE Access

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The high voltage direct current (HVDC) transmission lines represent the prospective way for long-distance transmission between countries, remote areas, and offshore wind farms to decrease power loss. However, the HVDC protection systems have many challenges against any system issue, such as maintenance and short circuits. Thus, the vital role played by high voltage direct current circuit breaker CB has made it the center of attention in HVDC protection systems. The main challenge in HVDC CB is the lack of naturally exiting current zero that allows the breaker to extinguish the arc during the opening process. Thus, a commutation L-C circuit is required to inject an oscillating current and enforce a zero-crossing. Nevertheless, the L-C branch is affected directly by the arcing time, the transient recovery voltage (TRV), and the rate of rise of recovery voltage (RRRV). This paper investigates the parametric uncertainties of L-C and SF6 mechanical interrupters, including cooling power and arc time constant upon TRV and RRRV, based on Mayr's black-box model. Furthermore, a part of 3000 MVA, 500 kV HVDC transmission line between Egypt and the Kingdom of Saudi Arabia is used as a testing system employing ATP/EMTP software package to demonstrate the effect of CB's parameters variations. The results indicate that the capacitance represents the major parameter having a direct impact on TRV and RRRV. In essence, the proper parameterization of the CB is highly required in the design process of HVDC CB to enhance the decision-making and ensure that the L-C is capable of reducing arcing time and TRV simultaneously. INDEX TERMSTransmission lines; HVDC; protection systems; circuit breakers; TRV; RRRV; black-box arc model; arcing time. Nomenclature

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A natural commutation current topology of hybrid HVDC circuit breaker integrated with limiting fault current

Cited by 4 publications

References 23 publications

DC Circuit Breaker Evolution, Design, and Analysis

DC Circuit Breaker Evolution, Design, and Analysis

A DC fault current fast-computing method of MMC-HVDC grid with short circuit protection equipment

Parameterization of Circuit Breakers for HVDC Transmission Line Between Egypt and the Kingdom of Saudi Arabia Toward Restriking Voltage

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