Results 11 to 20 of about 15,073,175 (287)
Frontiers in Energy ResearchWith the continuous construction of high-voltage direct-current (HVDC) transmission projects, higher requirements are placed on the frequency security of the regional power systems.
Zheng Shi +7 more
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Research on Emergency Frequency Control in AC/DC Hybrid Power Systems
IEEE AccessHarmonic state estimation is an important tool for power quality management. Current methods mostly rely on idealized real-time and synchronized harmonic data, without considering practical challenges such as non-real-time and asynchronous data, which ...
Wei Xu, Yu Sui, Yabin Chen, Huazhen Cao
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电力工程技术With the access of high proportions of new energy，synchronous generators are gradually phased out. On one hand，system inertia is reduced. On the other hand，during short-circuit faults，the low-voltage ride-through characteristics of new energy may result ...
Shuangshuang WANG +5 more
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Distributed frequency emergency control with coordinated edge intelligence [PDF]
Electric Power Systems Research, 2021 Developing effective strategies to rapidly support grid frequency while minimizing loss in case of severe contingencies is an important requirement in power systems. While distributed responsive load demands are commonly adopted for frequency regulation, it is difficult to achieve both rapid response and global accuracy in a practical and cost ...
Yingmeng Xiang +7 more
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High frequency link Uninterruptible Power Supply (UPS) system [PDF]
, 2013 This thesis was submitted for the degree of Master of Philosophy and awarded by Brunel University.The main aim of this thesis is to propose, design, simulate and build a new UPS system which can be used for compact applications.
Rasool, Emad Abdulrazzaq
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On Power System Frequency Control in Emergency Conditions [PDF]
Journal of Electrical Engineering and Technology, 2008 Frequency regulation in off-normal conditions has been an important problem in electric power system design/operation and is becoming much more significant today due to the increasing size, changing structure and complexity of interconnected power systems.
Bevrani, Hassan +3 more
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Development Of SSP510 Frequency Voltage Emergency Control Device [PDF]
Advances in Engineering Research, 2015 With the construction of UHV grid and smart grid, the structure and scale of China's power grid has been greatly changed. So new requirements for frequency voltage emergency control device are presented. Architectures and features of the device is first introduced, followed by intelligent plug-management device is described, then the front end of ...
Duanzhong Wang +4 more
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Introducing a New Optimized Emergency Demand Side Management Method to Restore the Power System Frequency [PDF]
International Journal of Industrial Electronics, Control and Optimization, 2022 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
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The Journal of Engineering, 2019 In recent years, large-capacity high-voltage direct currents (HVDCs) have been employed to transfer electricity from the west to the east of China. However, the frequent frequency drops due to HVDC blockings seriously threaten the short-term frequency ...
Luping Wang +4 more
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A novel robust frequency-constrained unit commitment model with emergency control of HVDC
Energy Reports, 2022 High-voltage direct current (HVDC) transmission systems are widely employed to transmit energy among systems with renewable energy integrated. However, the reduced system inertia and the risk of HVDC failure pose significant challenges to operators.
Sufan Jiang +6 more
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