A Novel Active Mechanical HVDC Breaker With Consecutive Interruption Capability for Fault Clearances in MMC-HVDC Systems

Sima, Wenxia; Fu, Zhengzheng; Yang, Ming; Yuan, Tao; Sun, Potao; Han, Xue; Si, Yan

doi:10.1109/tie.2018.2878115

Cited by 57 publications

(24 citation statements)

References 28 publications

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“…Then the resistor dissipates the residual energy. According to (9) and (10), the smaller the capacitance, the shorter the charging time and the faster the DCCB recovers. However, the maximum voltage across the capacitor increases accordingly.…”

Section: Analysis Of Stage IVmentioning

confidence: 99%

“…According to (9), the value of CETP and the pre-charge voltage ucETP,pre will affect the capacitor discharge time ΔtOFF, the current-limiting inductor current decay time Δtatt, the thyristor maximum voltage UTdmax, the current-limiting inductor current iL, and the capacitor voltage uc. In order to visually show the influence of the two parameters, firstly, CETP is set as 500μF.…”

Section: Parameter Design and Economic Analysismentioning

confidence: 99%

“…In order to visually show the influence of the two parameters, firstly, CETP is set as 500μF. Based on (9) and (13), the variations of each item under different values of ucETP,pre is shown in Fig. 8.…”

Section: Parameter Design and Economic Analysismentioning

confidence: 99%

“…At time t7, the inductor current drops to 0, D1 turns off, and the voltage of CETP rises to the maximum value. Substituting the parameters into (9) and (13), the maximum current of the energy transfer path is 5.83 kA and the maximum voltage is 165.3 kV.…”

Section: Parameter Design and Economic Analysismentioning

confidence: 99%

“…Hence, DCCBs may have a broad prospect in HVDC grids. Hybrid circuit breakers (HCBs) have lower on-state losses than solidstate DCCBs and faster fault current interrupting speed than mechanical DCCBs [8]- [9]. One of the classical configurations is ABB's HCB which consists of two paths: the nominal current path (NCP) and main breaker path (MBP) [10].…”

mentioning

confidence: 99%

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A Multi-Port Current-Limiting Hybrid DC Circuit Breaker

Bingqian²,

Liu

et al. 2021

IEEE Trans. Power Delivery

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Recently the hybrid multi-port DC circuit breaker (MP-DCCB) is becoming popular in protecting HVDC grids, thanks to their reduction of power electronics devices. In this paper, an enhanced multi-port current-limiting DCCB (MP-CLCB) for multiple line protection is proposed. The integrated fault current limiter (FCL) inside the MP-CLCB can clear the fault faster with slightly increased costs. To reduce the energy dissipation requirement for the surge arresters caused by the newly added current-limiting path, an energy transfer path which provides a loop with the inductors during the current decay stage is designed. The theoretical analysis of the precharging, current-limiting, fault interruption and energy dissipation of the MP-CLCB is carried out. Moreover, the design principles of the energy dissipation and the key parameters of the MP-CLCB are provided. The proposed approaches are verified through simulations in PSCAD/EMTDC. The results show that the MP-CLCB can replace multiple DCCBs, accelerate the fault current interruption and reduce the energy dissipation requirement for the surge arresters.

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Section: Analysis Of Stage IVmentioning

confidence: 99%

Section: Parameter Design and Economic Analysismentioning

confidence: 99%