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Reasonable Rated Voltage of High and Medium Power Adjustable-Speed Drives for Energy Saving

Ma Xiaoliang

Strategic Study of CAE 2001, Volume 3, Issue 11,   Pages 80-84

Abstract: The rated voltage of most of the motors in the power range is 10 kV because the power supply is 10 kVThe adjustable-speed scheme, a 10 kV motor is fed by a 10 kV inverter, is not reasonable because thislot of power electronic devices in series and its cost is high and reliability is poorer than lower voltagevoltage of the motor and inverter is the same as power supply, i. e. a lower rated voltage can be usedThe reasonable rated voltages of motors and inverters with different power grades are investigated and

Keywords： high and medium power     adjustable-speed drives for energy saving     reasonable rated voltage     low voltageinverters     medium voltage inverters     by-pass    

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Parameter identification of interconnected power system frequency after trip-out of high voltage transmission

Xuzhan ZHOU,Shanshan LIU,Mingkun WANG,Yiping DAI,Yaohua TANG

Frontiers in Energy 2014, Volume 8, Issue 3,   Pages 386-393 doi: 10.1007/s11708-014-0323-9

Abstract: Accurate modeling and parameters of high voltage (HV) grid are critical for stability research of system

Keywords： high voltage (HV) grid     frequency stability parameter identification     primary frequency regulation (PFR    

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Recent advances toward high voltage, EC-free electrolytes for graphite-based Li-ion battery

Tong Zhang, Elie Paillard

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 577-591 doi: 10.1007/s11705-018-1758-z

Abstract: In the last years, many alternative electrolytes, aiming at allowing high voltage battery operation,Thus, we review here the high voltage, EC-free alternative electrolytes, focusing on those allowing the

Keywords： lithium-ion     electrolyte     solid electrolyte interphase     additives     high voltage     graphite    

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Analysis and stabilization control of a voltage source controlled wind farm under weak grid conditions

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 943-955 doi: 10.1007/s11708-021-0793-5

Abstract: the wind turbines (WTs) are controlled by a new type of converter control strategy referred to as the voltage

Keywords： weak grids     voltage source (VS) control     wind turbine (WT)     stabilization control     wind farm     inertial    

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Development and advances in modular multilevel converter based HVDC projects in China

Frontiers of Engineering Management   Pages 183-189 doi: 10.1007/s42524-022-0248-7

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Keywords： high voltage direct current     power converter     power systems     renewable energy     ultra-high voltage    

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Cluster voltage control method for “Whole County” distributed photovoltaics based on improved differential

Frontiers in Energy   Pages 782-795 doi: 10.1007/s11708-023-0905-8

Abstract: However, the high penetration rate of DPVs has brought problems such as voltage violation and power qualityTo address the problems, this paper proposes a cluster voltage control method for distributed photovoltaicFirst, it partitions the distribution network into clusters, and different clusters exchange terminal voltageonly greatly improves the operational efficiency of the algorithm but also effectively controls the voltageof the distribution network, and maximizes the consumption capacity of DPVs based on qualified voltage

Keywords： distributed photovoltaics (DPVs)     cluster partitioning     improved differential evolution algorithm     voltage    

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power quality conditioner based on a three-level NPC inverter using fuzzy control techniques for all voltage

Salim CHENNAI,M-T BENCHOUIA

Frontiers in Energy 2014, Volume 8, Issue 2,   Pages 221-239 doi: 10.1007/s11708-014-0317-7

Abstract: The proposed UPQC is capable of mitigating source current harmonics and compensate all voltage disturbancessuch as voltage sags, swells, unbalances and harmonics.The DC voltage is maintained constant using proportional integral voltage controller.performances of the proposed UPQC system are evaluated in terms of power factor correction, mitigation of voltageor current harmonics and all other voltage disturbances compensation using Matlab-Simulink software

Keywords： inverter     unified power quality conditioner (UPQC)     current harmonics mitigation     fuzzy logic controller     voltage    

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Spatial Nonlinear Analysis of the Reasonable Cable Tension for a Thousand-meter Scale Cable-stayed Bridge

Zhang Jianmin,Xiao Rucheng

Strategic Study of CAE 2004, Volume 6, Issue 12,   Pages 37-42

Abstract:

In this paper, a model for spatial nonlinear optimization programming to obtain the prestresses of cables in the cable-stayed bridge is established, in which the bending strain energy of the beams for the bridge and the cable tower is the objective function, and structural stresses and the cable forces are the constraint conditions. In order to determine the prestresses of the cables of the bridge, the first order optimization method is used to solve the program. This method is used to obtain set of optimal cable tensions of a thousand-meter scale cable-stayed bridge under permanent loads, and the result of analysis showed that the method is easy to apply and effective.

Keywords： cable-stayed bridge     first order optimization method     reasonable finished dead state    

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Experimental study of pollution effect on the behavior of high voltage insulators under alternative current

Hani BENGUESMIA, Nassima M’ZIOU, Ahmed BOUBAKEUR

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 213-221 doi: 10.1007/s11708-017-0479-1

Abstract: paper, the impact of the conductivity and the distribution of pollution on the behavior of the high voltagedifferent conductivities for a discontinuous distribution of the pollution on the insulator under an AC voltageFurthermore, the influence of the pollution on the flashover voltage and the leakage current is studied

Keywords： insulator     circular model     artificial pollution     flashover     leakage current     discontinuous pollution     high voltage    

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Aerodynamic challenges in span length of suspension bridges

XIANG Haifan, GE Yaojun

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 153-162 doi: 10.1007/s11709-007-0016-0

Abstract: aerodynamic stability are reviewed, a trial design of a 5 000 m suspension bridge, which is estimated as a reasonable

Keywords： requirement     reasonable limitation     challenge     particular     economical construction    

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Topology-independent end-to-end learning model for improving the voltage profile in microgrids-integrated

Frontiers in Energy 2023, Volume 17, Issue 2,   Pages 211-227 doi: 10.1007/s11708-022-0847-3

Abstract: operation of power distribution networks is challenged by the issues of multiple power flow directions and voltageAccordingly, an efficient voltage control strategy is needed to ensure voltage security against ever-changingIn this paper, we propose a novel data-driven voltage profile improvement model, denoted as system-wideand decision-making optimization in sequence, the proposed end-to-end model determines the optimal voltage

Keywords： end-to-end learning     microgrids     voltage profile improvement     generative adversarial network    

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Experimental investigation and comparative study of inter-turn short-circuits and unbalanced voltage

Fatima BABAA, Abdelmalek KHEZZAR, Mohamed el kamel OUMAAMAR

Frontiers in Energy 2013, Volume 7, Issue 3,   Pages 271-278 doi: 10.1007/s11708-013-0258-6

Abstract: However, small unbalance in the supply voltage and/or in the machine structure that exists in any realIn this case, it is too difficult to distinguish between the current harmonics due to the supply voltageprovide the relationship between the inter-turn short-circuits in the stator winding and the supply voltage

Keywords： induction machines     fault indicator     inter-turn short-circuit fault     unbalance supply voltage    

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Reasonable Scale of Megacity Central Area Based on Multivariate Data and a Traffic Perspective

Lu Huapu, Bai Zhuotong,Wu Zhouhao, Fu Zhihuan

Strategic Study of CAE 2022, Volume 24, Issue 6,   Pages 146-153 doi: 10.15302/J-SSCAE-2022.06.013

Abstract: Addressing the urban malaise in megacities necessitates analyzing and demonstrating the reasonableThis study proposes that commuting time is the core controlling factor determining the reasonable

Keywords： reasonable scale     multivariate data     central urban area     megacity     happiness    

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Possible role of power-to-heat and power-to-gas as flexible loads in German medium voltage networks

Mark KUPRAT, Martin BENDIG, Klaus PFEIFFER

Frontiers in Energy 2017, Volume 11, Issue 2,   Pages 135-145 doi: 10.1007/s11708-017-0472-8

Abstract: Germany’s energy transition triggered a rapid and unilateral growth of renewable energy sources (RES) in the electricity sector. With increasing shares of intermittent RES, overcapacities during periods of strong wind and photovoltaic electricity generation occur. In the face of insufficient transmission capacities, due to an inhibited network extension, the electricity generation has to be curtailed. This curtailment of RES leads to economic losses and could be avoided through flexible loads. As an option to cope with those problems, the technologies of power-to-gas (PtG) and power-to-heat (PtH) are presented in this paper. First, the alkaline electrolyzer (AEL), polymer electrolyte membrane electrolyzer (PEMEL), and solid oxide electrolyzer cell (SOEC) are investigated regarding their operational parameters. Second, the electric boiler, electrode heating boiler, and heat pumps are considered. Ultimately, the network-supporting abilities and the potential to provide ancillary services, such as control power, load sequence operation, cold start and part load capability, are compared among one another.

Keywords： power-to-gas     power-to-heat     flexible loads     ancillary services     coherent energy systems    

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The impact of different voltage application modes on biodegradation of chloramphenicol and shift of microbial

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1576-x

Abstract:

● Presented coupled system enhanced biodegradation of antibiotic chloramphenicol.

Keywords： Electrical stimulation     Biodegradation     Microbial community     Chloramphenicol    

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Title Author Date Type Operation

Reasonable Rated Voltage of High and Medium Power Adjustable-Speed Drives for Energy Saving

Ma Xiaoliang

Journal Article

Parameter identification of interconnected power system frequency after trip-out of high voltage transmission

Xuzhan ZHOU,Shanshan LIU,Mingkun WANG,Yiping DAI,Yaohua TANG

Journal Article

Recent advances toward high voltage, EC-free electrolytes for graphite-based Li-ion battery

Tong Zhang, Elie Paillard

Journal Article

Analysis and stabilization control of a voltage source controlled wind farm under weak grid conditions

Journal Article

Development and advances in modular multilevel converter based HVDC projects in China

Journal Article

Cluster voltage control method for “Whole County” distributed photovoltaics based on improved differential

Journal Article

power quality conditioner based on a three-level NPC inverter using fuzzy control techniques for all voltage

Salim CHENNAI,M-T BENCHOUIA

Journal Article

Spatial Nonlinear Analysis of the Reasonable Cable Tension for a Thousand-meter Scale Cable-stayed Bridge

Zhang Jianmin,Xiao Rucheng

Journal Article

Experimental study of pollution effect on the behavior of high voltage insulators under alternative current

Hani BENGUESMIA, Nassima M’ZIOU, Ahmed BOUBAKEUR

Journal Article

Aerodynamic challenges in span length of suspension bridges

XIANG Haifan, GE Yaojun

Journal Article

Topology-independent end-to-end learning model for improving the voltage profile in microgrids-integrated

Journal Article

Experimental investigation and comparative study of inter-turn short-circuits and unbalanced voltage

Fatima BABAA, Abdelmalek KHEZZAR, Mohamed el kamel OUMAAMAR

Journal Article

Reasonable Scale of Megacity Central Area Based on Multivariate Data and a Traffic Perspective

Lu Huapu, Bai Zhuotong,Wu Zhouhao, Fu Zhihuan

Journal Article

Possible role of power-to-heat and power-to-gas as flexible loads in German medium voltage networks

Mark KUPRAT, Martin BENDIG, Klaus PFEIFFER

Journal Article

The impact of different voltage application modes on biodegradation of chloramphenicol and shift of microbial

Journal Article