Results 31 to 40 of about 22,049 (174)
Zhongguo dianli, 2020 Thyristor electronic board (TE board) of HVDC converter valve is an important equipment of HVDC converter valve. In the process of operation and maintenance, TE board burned out many times, resulting in the shutdown of the converter valve pole, which ...
Zhen WANG, Kun LIU, Wei JU
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The Area Comparison of LCC-HVDC and VSC-HVDC [PDF]
Science Discovery, 2017 With the mature of high power IGBT, VSC-HVDC technique is gradually adopted in principle power grid with higher voltage and capacity. At present, it is generally considered that compared with traditional HVDC technique, VSC-HVDC will save lots of land resources. However, it is not always the case.
openaire +1 more source
Capacitor Energy Variations in MMC Using Harmonics Injection
Power Electronics and Drives, 2020 Modular multilevel converter (MMC) is considered as a good technology for high-voltage direct current (HVDC) transmission systems. It can generate a good quality staircase output voltage waveform due to the cascaded connection of large number of ...
Hafeez Kamran +3 more
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Recent advances in High-Voltage direct-current power transmission systems [PDF]
, 2006 The ever increasing progress of high-voltage high-power fully-controlled semiconductor technology continues to have a significant impact on the development of advanced power electronic apparatus used to support optimised operations and efficient ...
Nikolas Flourentzou +5 more
core +1 more source
A Multi-infeed HVDC System: Assessment of Transient Overvoltages
, 2021 The paper presents an electromagnetic-transient (EMT) analysis of a multi-infeed HVDC cable system in order to assess the transient overvoltages on the cables due to different fault conditions. It is well known that the HVDC-MMC configuration needs surge
S. DAMBONE SESSA +5 more
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Research on coordinated reactive power control strategy of hybrid-HVDC
The Journal of Engineering, 2019 Based on the hybrid HVDC transmission system, which is composed by line-commutated converter (LCC) in parallel with voltage source converter (VSC), a coordinated reactive power control strategy of hybrid-HVDC in both steady and transient states is ...
Ying Huang, Chunhua Li, Tao Liu
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Variance‐Empirical Mode Decomposition Method for Fault Detection in MMC‐HVDC Transmission Lines
Energy Science &Engineering, EarlyView.A variance‐embedded empirical mode decomposition (VEMD) method is proposed for fast and accurate fault detection in MMC‐HVDC transmission lines. By combining variance analysis with EMD, the method reliably detects various faults without communication links and remains robust to noise and non‐fault transients.
Seyed Amir Hosseini, Behrooz Taheri
wiley +1 more source
Optimizing Task Orchestration for Distributed Real-Time Electromagnetic Transient Simulation
IEEE AccessTransient simulation in power engineering is crucial as it models the dynamic behavior of power systems during sudden events like faults or short circuits. Electromagnetic transient simulations involve multiple coordinated tasks.
Qi Guo +8 more
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Heat Transfer Process of HVDC Submarine Cables under Transient Load
Zhongguo dianli, 2020 High-voltage direct current (HVDC) XLPE submarine cable is an important carrier for long-distance and large-capacity power transmission. The HVDC submarine cable load affects temperature distribution, while the temperature has an important influence on ...
Zhengbo LIANG +5 more
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Inertia Compensation Strategy of AC/DC System Tie Line Based on Energy Storage Differential Control
Taiyuan Ligong Daxue xuebao, 2021 A strategy of compensating DC tie line inertia by differential control of energy storage was proposed in this paper. First, through the analysis of AC/DC transmission model and the inertia characteristics of DC tie line, a two zone AC/DC hybrid AGC ...
Xilin ZHAO, Daheng ZHANG, Hang MING
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