A hybrid circuit breaker with fault current limiter circuit in a VSC-HVDC application

Aḥmad, Muḥammad Musḥtaq; Gong, Chunyang; Nadeem, Muhammad; Chen, Hui; Wang, Zhixin

doi:10.1186/s41601-022-00264-9

Cited by 6 publications

(2 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the issue of DC short circuit fault protection poses a significant challenge and acts as a major obstacle to the development and implementation of multi-terminal HVDC grids with overhead lines. When a DC grid experiences a short-circuit fault, it is necessary to insert short circuit protection equipment into the fault path to limit the rising rate and break current of the fault current, as well as isolate the short circuit fault (Ahmad et al, 2022;Zhang et al, 2022). The presence of SCPE within a multi-terminal MMC-HVDC grid adds complexity to the system, making it highly challenging to accurately calculate fault currents and analyze the performance of SCPE within the grid.…”

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.

View full text Add to dashboard Cite

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.

show abstract

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.

View full text Add to dashboard Cite

show abstract

“…And it is difficult to achieve full current range interruption. Moreover, due to the lack of current-limiting components, the devices still withstand significant current stress, which significantly limits the development and application of DCCBs [23,24]. An HCB with full bridge submodules is proposed in reference [25].…”

Section: Introductionmentioning

confidence: 99%

A Cost-Effective Current-Limiting Hybrid DC Circuit Breaker Based on Hybrid Semiconductors

Liu,

Yuan,

Chen

et al. 2024

Electronics

View full text Add to dashboard Cite

DC circuit breakers (DCCBs) are the key equipment to rapidly interrupt the fault current in high-voltage DC power grids and ensure the safe operation of the system. However, most DCCBs do not take current-limiting measures and rely solely on current-limiting reactors in the system to limit the rate of current rise during the interruption process. The extensive use of fully controlled power electronic devices in circuit breakers (CBs) results in high costs. To address the issues above, this paper proposes a DCCB topology with a current-limiting function based on thyristors and diodes, which can reduce the cost of CB while ensuring reliable interruption. The impact of various parameters on CB performance is analyzed using numerical calculations to optimize the parameters. Then, a simulation model of a 500 kV/16 kA DCCB is built in PSCAD/EMTDC, and the performance of the proposed CB topology is compared with the other CB topologies. By comparison, the proposed DCCB topology can reliably isolate fault currents and reduce the amplitude of fault currents and the cost of CBs. Significantly, the energy absorbed by the metal oxide varistor (MOV) during the interruption process decreases by 64.2%, reducing the cost and volume of the MOV. Finally, the feasibility of the CB is further verified in the ±500 kV 4-terminal high-voltage DC power grid simulation model. The results show that the proposed DCCB topology can limit the fault current rise rate, interrupt and isolate the fault reliably, and reduce the cost.

show abstract

A hybrid multi-port HVDC circuit breaker that improves interruption and reset time through shared energy dissipation and fault current regeneration

Arooj,

Taj

2024

Results in Engineering

View full text Add to dashboard Cite

A hybrid circuit breaker with fault current limiter circuit in a VSC-HVDC application

Cited by 6 publications

References 40 publications

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

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

A Cost-Effective Current-Limiting Hybrid DC Circuit Breaker Based on Hybrid Semiconductors

A hybrid multi-port HVDC circuit breaker that improves interruption and reset time through shared energy dissipation and fault current regeneration

Contact Info

Product

Resources

About