Results 11 to 20 of about 389 (201)
A Dynamic Nonlinear VDCOL Control Strategy Based on the Taylor Expansion of DC Voltages for Suppressing the Subsequent Commutation Failure in HVDC Transmission [PDF]
Energies, 2023 Subsequent commutation failure in high-voltage DC transmission systems seriously emphasizes the safe and stable operation of power systems. Via analyzing the mechanism of commutation failure and the principle of voltage-dependent current order limiter ...
Hongzheng Li +5 more
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International Journal of Electrical Power & Energy SystemsThe hybrid cascaded high-voltage direct current (HC-HVDC) system integrates the benefits of both LCC and MMC technologies. However, the inverter LCC is prone to suffer subsequent commutation failure (SCF) when an AC fault occurs. Therefore, a coordinated
He Wang +4 more
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Adaptive firing angle compensation control for mitigating DC subsequent commutation failure
电力工程技术, 2022 Subsequent commutation failure of the high voltage direct current (HVDC) transmission system has a seriously negative impact on the stable operation of the AC-DC hybrid power grid.
YANG Chengxiang +5 more
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Suppression strategy for subsequent commutation failure of DC system based on improved VDCOL
电力工程技术, 2022 Aiming at the problem of subsequent commutation failure during the fault recovery period after the first commutation failure of high voltage direct current system,the recovery process is divided into the first commutation failure (stage 1),the beginning ...
CHEN Ruikang +3 more
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Research on Dynamic Reactive Power Compensation Scheme for Inhibiting Subsequent Commutation Failure of MIDC [PDF]
Sustainability, 2021 Commutation failure at the inverter side of an MIDC (multi-infeed HVDC) is usually caused by AC system faults. Suppose the converter bus voltage cannot recover to the normal operation level in time: in that case, the commutation failure will then develop into more severe subsequent commutation failures or even DC blocking, which will severely threaten ...
Yifan Zhang +5 more
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International Journal of Electrical Power & Energy Systems, 2022 Abstract Commutation failure is one of the most common faults in high voltage direct current (HVDC) transmission system. Subsequent commutation failures (SCFs) caused by commutation failure will cause large voltage and current swing. Several SCFs may cause DC transmission power interruption, which seriously threatens the safe and stable operation of ...
Hongyu Zhou +5 more
exaly +4 more sources
Subsequent commutation failure suppression strategy of hybrid cascaded HVDC system based on coordinated control of CEC and VDCOL [PDF]
IET Energy Systems IntegrationThe inverter side of hybrid cascaded HVDC adopts the structure of Modular Multilevel Converter (MMC) in series with Line Commutated Converter (LCC). The complete system amalgamates the advantages of LCC with MMC, but it also makes the interaction process
He Wang +4 more
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A Novel Recovery Strategy to Suppress Subsequent Commutation Failure in an LCC-Based HVDC [PDF]
Protection and Control of Modern Power SystemsChangsheng Su +3 more
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International Journal of Electrical Power & Energy Systems, 2020 Abstract With the wide construction of the line-commuted converter-based high-voltage direct current (LCC-HVDC), a large-scale AC/DC hybrid grid pattern has gradually formed. LCC-HVDC is prone to subsequent commutation failure (SCF) during the recovery process of first commutation failure (FCF).
Jinxin Ouyang +4 more
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Shanghai Jiaotong Daxue xuebao, 2022 In order to suppress subsequent commutation failures of high voltage direct current (HVDC), the dynamic process of electrical and control quantities during system recovery is studied, and the main reason for subsequent commutation failures is proposed in
CONG Xinpeng, ZHENG Xiaodong, CAO Yaqian, TAI Nengling, MIAO Yuancheng, LI Ke
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