Results 1 to 10 of about 811 (64)
With the development of modern communication technology and the large number of new controllable loads connected to the power grid, the new controllable loads with flexible regulation characteristics can participate in the emergency frequency stability ...
Lixia Sun +5 more
doaj +1 more source
High-voltage direct current (HVDC) blocking disturbance leads to large power losses in the receiving-end power grid, and the event-driven emergency frequency control (EFC) is an important measure to prevent large frequency deviation.
Jingrun Xue +5 more
doaj +1 more source
Introduction: The urban distribution system plays a crucial role in efficient power distribution within urban areas. The increasing frequency and intensity of extreme events in recent years pose significant challenges to the reliable operation of urban ...
Zeyuan Shen +5 more
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How to Manage Atrial Fibrillation in the Emergency Department: a Critical Appraisal
Atrial fibrillation is the most common cardiac arrhythmia in emergency departments. There is growing evidence that certain patients with acute atrial fibrillation can be safely managed in the emergency room without the need for hospitalization ...
Rafael Thiesen Magliari +1 more
doaj +7 more sources
Natural disasters lead to the uncertain topological structure of the urban distribution network. It is difficult for the communication system to recover quickly, which brings great difficulties to restoring the power supply.
Zhichao Liu +7 more
doaj +1 more source
The frequency stability problem and frequency transient characteristics of the system under the island operation mode formed by AC tie-line N-2 faults are analyzed after the power grid is evolved into an asynchronous interconnection using VSC-HVDC.
CHEN Qi-chao +4 more
doaj +1 more source
With the construction and development of ultra-high voltage (UHV) power grids, large-scale, long-distance power transmission has become common. A failure of the connecting line between the sending-end power grid and the receiving-end power grid will ...
Wentao Huang +5 more
doaj +2 more sources
Design of emergency speed regulation system of coal mine moter
In view of problem that it is difficult to recover normal operation in a short time when frequency converter fails, emergency speed regulation system of coal mine moter was designed.
RUAN Wentao
doaj +1 more source
Introducing a New Optimized Emergency Demand Side Management Method to Restore the Power System Frequency [PDF]
Emergency demand response (EDR) and under frequency load shedding (UFLS) are used as two separate methods for frequency restoration of power system after the usual methods of frequency control are not able to maintain the frequency stability of the ...
Pezhvak Sheikhzadeh-Baboli +1 more
doaj +1 more source
Frequency Stability of Power System with Large Share of Wind Power Under Storm Conditions
The operation of transmission systems with large share of wind power is specially challenging under storm conditions. Under the stormy wind speed conditions, wind turbine protection system is designed to shut down the turbine to avoid excessive ...
Kaushik Das +3 more
doaj +1 more source

