Results 51 to 60 of about 32,780 (214)

The Surface Potential Restoration Algorithm of Electrostatic Capacitance Probe During On‐Line Measurement

High Voltage, EarlyView.
ABSTRACT The surface charge accumulation on insulators is one of the important factors that limit the development of high‐voltage direct current (HVDC) gas insulated transmission line (GIL), and the accurate measurement of surface charge is the basis to explore its physical mechanism.
Lei Zhang, Di Yu, Deyue Tang, Zhousheng Zhang   +3 more
wiley   +1 more source

New Monolithic Modular DC-DC Converter for Constant Current Offshore Interconnection With VSC HVdc Network

IEEE Access
The rapid growth in HVDC (High Voltage Direct Current) grids has shown the falls of point-to-point connections. Several challenges such as the requirement of DC (Direct Current) fault blocking capability, interfacing of different grounding schemes ...
Mohamed Mansour, Mohamed G. Abdel-Moneim, Ayman S. Abdel-Khalik, Shehab Ahmed, Khaled H. Ahmed   +4 more
doaj   +1 more source

R&D and application of voltage sourced converter based high voltage direct current engineering technology in China

Journal of Modern Power Systems and Clean Energy, 2014
As a new generation of direct current (DC) transmission technology, voltage sourced converter (VSC) based high voltage direct current (HVDC) has been widely developed and applied all over the world.
Guangfu Tang, Zhiyuan He, Hui Pang
doaj   +1 more source

Benders Decomposition‐Based Power Network Expansion Planning According to Eco‐Sizing of High‐Voltage Direct‐Current System, Power Transmission Cables and Renewable/Non‐Renewable Generation Units

IET Renewable Power Generation
High‐voltage DC (HVDC) systems are taken into consideration while simultaneous generation and transmission expansion planning in this paper. It is based on the placement and sizing of generating units, AC transmission cables, and HVDC systems.
Kazem Emdadi, S. Pirouzi
semanticscholar   +1 more source

Micro Partial Discharge Characteristics of SF6 Under DC Voltage

High Voltage, EarlyView.
ABSTRACT In gas‐insulated high‐voltage direct current (HVDC) devices, micro partial discharges (PD) caused by micro‐protrusions or surface roughness on conductors or enclosures may not cause immediate insulation system failure due to their weak discharge intensity.
Geng Chen, Jie Wang, Chuanyang Li, Cong Wang, Youping Tu   +4 more
wiley   +1 more source

Construction and Application of Online Vibration Frequency Response Analysis Method for Converter Transformer Winding

High Voltage, EarlyView.
ABSTRACT The harmonic current and vibration of a converter transformer are effective pieces of information for detecting mechanical faults in the winding. In this paper, the ratio of vibration acceleration to the current squared is defined as the vibration frequency response function (VFRF) of the winding, and then, a novel online vibration frequency ...
Shuyu Wu, Fan Zhang, Shengchang Ji
wiley   +1 more source

Nonlinear Control Design of Three-Level Neutral-Point-Clamped-Based High-Voltage Direct Current Systems for Enhanced Availability during AC Faults with Semi-Experimental Validation

Engineering Proceedings, 2023
This research paper addresses the issue of enhancing the operational availability of NPC three-level converter-based high-voltage direct current (HVDC) transport systems during alternating current (AC) grid fault conditions.
Ilyass El Myasse, Aziz Watil, Abdelmounime El Magri, Ambe Harrison   +3 more
doaj   +1 more source

Planning of Grid‐Interactive Flexibility Resources Under Carbon‐Emission Constraints

IET Smart Energy Systems, EarlyView.
High renewable penetration drives the transition of power system planning; this study finds that carbon pricing promotes photovoltaic expansion, whereas deep decarbonisation necessitates diverse technologies and enhanced cross‐regional transmission. ABSTRACT High renewable penetration and stringent decarbonisation targets are reshaping power system ...
Shichang Cui, Jian Qiu, Zhengwei Ren, Renbo Wei, Zhuocheng Feng, Qiang Fan, Qi An   +6 more
wiley   +1 more source

Stability and control of VSC-based HVDC systems: A systematic review

e-Prime: Advances in Electrical Engineering, Electronics and Energy
The technological development in the area of power electronics has paved the way for the construction of High Voltage Direct Current (HVDC) systems. The utilization of HVDC grids alongside conventional High Voltage Alternating Current (HVAC) grids poses ...
Fazel Mohammadi, Neda Azizi, Hassan Moradi CheshmehBeigi, Kumars Rouzbehi   +3 more
doaj   +1 more source

Power Dispatch and Voltage Control in Multiterminal HVDC Systems: A Flexible Approach

IEEE Access, 2017
This paper deals with the power dispatch and direct voltage control in multiterminal high voltage direct current (MT-HVDC) systems. Generalized voltage droop (GVD) control is adopted for voltage source converters (VSC)s of a MT-HVDC system.
Ali Raza, Yuchao Liu, Kumars Rouzbehi, Mohsin Jamil, Syed Omer Gilani, Xu Dianguo, Barry W. Williams   +6 more
doaj   +1 more source