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Smoothing ramp events in wind farm based on dynamic programming in energy internet

Jiang LI, Guodong LIU, Shuo ZHANG

Frontiers in Energy 2018, Volume 12, Issue 4,   Pages 550-559 doi: 10.1007/s11708-018-0593-8

Abstract: When wind power is integrated into the main grid, ramp events caused by stochastic wind power fluctuationmay threaten the security of power systems.This paper proposes a dynamic programming method in smoothing ramp events.First, the energy internet model of wind power, pumped storage power station, and gas power station isThe results show that the dynamic programming method proposed is effective for smoothing wind power and

Keywords： energy internet     wind power     ramp events     dynamic programming    

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A unified power electronic controller for wind driven grid connected wound rotor induction generator

D. R. BINU BEN JOSE, N. AMMASAI GOUNDEN, Raavi SRI NAGA RAMESH

Frontiers in Energy 2013, Volume 7, Issue 1,   Pages 39-48 doi: 10.1007/s11708-012-0229-3

Abstract: The implementation of a simple power converter for a wound rotor induction generator employing a threeThe detailed working of the system in power smoothing mode and maximum power point tracking mode is presentedcontrolled (by controlling the firing angle of the line commutated inverter) for controlling the stator powerpole, 1500 r/min wound rotor induction generator and the results obtained with the generator supplying power

Keywords： line commutated inverter     MPPT     power smoothing     wound rotor induction generator    

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A three-dimensional two-level gradient smoothing meshfree method for rainfall induced landslide simulations

Dongdong WANG, Jiarui WANG, Junchao WU, Junjun DENG, Ming SUN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 337-352 doi: 10.1007/s11709-018-0467-5

Abstract: A three-dimensional two-level gradient smoothing meshfree method is presented for rainfall induced landslideThe two-level gradient smoothing for meshfree shape function is elaborated in the three-dimensional LagrangianIt is shown that due to the successive gradient smoothing operation without the requirement of derivativeThe effectiveness of the present three-dimensional two-level gradient smoothing meshfree method is demonstrated

Keywords： meshfree method     landslide     rainfall     three-dimensional two-level gradient smoothing     nodal integration    

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Research of the Exponential Smoothing Technology forForecasting Slope Displacement

Shen Liangfeng

Strategic Study of CAE 2007, Volume 9, Issue 6,   Pages 94-97

Abstract:

Exponential smoothing is an efficient method for forecasting and decision-making The forecasting model of exponential smoothing to forecast the displacement at Observation PointAccording to the characteristics of observation forecast formula with linear trend of the twice exponential smoothing,  appropriate formulae calculating at,  bt and suitable exponential smoothing value are selected

Keywords： exponential smoothing     forecasting slope displacement self-adaptive filtering    

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The smoothed finite element method (S-FEM): A framework for the design of numerical models for desired solutions

Gui-Rong Liu

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 456-477 doi: 10.1007/s11709-019-0519-5

Abstract: It has a family of models carefully designed with innovative types of smoothing domains.

Keywords： computational method     finite element method     smoothed finite element method     strain smoothing technique     smoothing domain     weakened weak form     solid mechanics     softening effect     upper bound solution    

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The shape control over the front-end of excimer laser beam

Zhao Xueqing,Xue Quanxi,Zheng Guoxin,Huang Ke,Xiao Weiwei,Yi Aiping,Liu Jingru

Strategic Study of CAE 2009, Volume 11, Issue 8,   Pages 52-57

Abstract:

In high power excimer laser system, the shape of output laser beam from

Keywords： excimer laser     beam smoothing     uniformity     pulse shaping     high power    

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Adaptive simulation of wave propagation problems including dislocation sources and random media

Hassan YOUSEFI, Jamshid FARJOODI, Iradj MAHMOUDZADEH KANI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1054-1081 doi: 10.1007/s11709-019-0536-4

Abstract: preserve waves of small magnitudes, an adaptive regularization is utilized: using of smaller amount of smoothingThis adaptive smoothing guarantees also solution stability without over smoothing phenomenon in stochastic

Keywords： adaptive wavelet     adaptive smoothing     discontinuous solutions     stochastic media     spurious oscillations     Tikhonov    

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UPFC setting to avoid active power flow loop considering wind power uncertainty

Shenghu LI, Ting WANG

Frontiers in Energy 2023, Volume 17, Issue 1,   Pages 165-175 doi: 10.1007/s11708-020-0686-z

Abstract: The active power loop flow (APLF) may be caused by impropriate network configuration, impropriate parameterThe power flow controllers, e.g., the unified power flow controller (UPFC), may be the reason and theapproaching to the critical existing condition, the integrated power flow needs less iterations andBesides, with wind power fluctuation, the interval power flow (IPF) is introduced into the integratedpower flow, and solved with the affine Krawcyzk iteration to make sure that the range of active power

Keywords： active power loop flow (APLF)     unified power flow controller (UPFC)     wind power uncertainty     interval power    

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Adaptive selective ES-FEM limit analysis of cracked plane-strain structures

H. NGUYEN-XUAN,T. RABCZUK

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 478-490 doi: 10.1007/s11709-015-0317-7

Abstract: Applying a strain smoothing projection to the strain rates on the dual mesh, the incompressibility constraintand the flow rule constraint are imposed over the edge-based smoothing domains and everywhere in the

Keywords： cracked structure     limit analysis     von Mises criterion     edge-based strain smoothing     second-order cone programming    

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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: As an option to cope with those problems, the technologies of power-to-gas (PtG) and power-to-heat (PtH, the network-supporting abilities and the potential to provide ancillary services, such as control power

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

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Evaluation of the power-generation capacity of wearable thermoelectric power generator

Yang YANG, Jing LIU,

Frontiers in Energy 2010, Volume 4, Issue 3,   Pages 346-357 doi: 10.1007/s11708-010-0112-z

Abstract: heat dissipating from the human body through the skin surface is a promising way to supply electronic powerthe temperature difference between the environment and the human body, and complete elimination of power

Keywords： thermal energy harvester     thermoelectric generator     biological heat transfer     power generating capacity    

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Renewable power for China: Past, present, and future

Eric MARTINOT

Frontiers in Energy 2010, Volume 4, Issue 3,   Pages 287-294 doi: 10.1007/s11708-010-0120-z

Abstract: examines the history, status, policy situation, development issues, and prospects for key renewable powerglobal leader in wind turbine and solar photovoltaic (PV) production, and leads the world in total powerexperience and performance, transmission constraints, grid interconnection time lags, resource assessments, powerProspects for biomass power are limited by resource constraints.Other technologies such as concentrating solar thermal power, ocean energy, and electricity storage require

Keywords： renewable energy     wind power     solar power     sustainable energy policy     green industry    

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Carbon emission impact on the operation of virtual power plant with combined heat and power system

Yu-hang XIA,Jun-yong LIU,Zheng-wen HUANG,Xu ZHANG

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 5,   Pages 479-488 doi: 10.1631/FITEE.1500467

Abstract: A virtual power plant (VPP) can realize the aggregation of distributed generation in a certain region, and represent distributed generation to participate in the power market of the main grid.This paper proposes the allocation of an electric boiler to realize wind power directly converted forsupplying heat, which can not only overcome the limitation of heat output from a combined heat and powerThe power output of each unit in the case study is analyzed under four scenarios.

Keywords： Virtual power plant (VPP)     Carbon emissions     Electric boiler     Wind power     Combined heat and power (CHP    

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Strategy of Manufacturing Quality Power

The Research Group for Manufacturing Quality Power Strategy

Strategic Study of CAE 2015, Volume 17, Issue 7,   Pages 24-28

Abstract:

The meaning to implement the Manufacturing Quality Power Strategy was systematically discussed in

Keywords： manufacturing power     quality     strategy    

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Will Germany move into a situation with unsecured power supply?

Harald SCHWARZ

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 551-570 doi: 10.1007/s11708-019-0641-z

Abstract: increasing traffic, CO emissions from this mobility sector increased and CO emission from German powercalled “The German Coal Commission”) to propose a time line: how Germany can move out of coal-fired powermade: ① Until 2022: Due to a former decision of the German Government, the actual remaining nuclear powerplants should be switched off. ③ Until 2038: The final 17 GW of German hard coal or lignite-fired powerCoal Commission” has not investigated the relevant technical parameter to ensure a secured electric power

Keywords： CO2 reduction     mobility sector     renewable generation     coal commission     secured power generationcapacity     reliable power supply     power-to-gas     power-to-heat    

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Title Author Date Type Operation

Smoothing ramp events in wind farm based on dynamic programming in energy internet

Jiang LI, Guodong LIU, Shuo ZHANG

Journal Article

A unified power electronic controller for wind driven grid connected wound rotor induction generator

D. R. BINU BEN JOSE, N. AMMASAI GOUNDEN, Raavi SRI NAGA RAMESH

Journal Article

A three-dimensional two-level gradient smoothing meshfree method for rainfall induced landslide simulations

Dongdong WANG, Jiarui WANG, Junchao WU, Junjun DENG, Ming SUN

Journal Article

Research of the Exponential Smoothing Technology forForecasting Slope Displacement

Shen Liangfeng

Journal Article

The smoothed finite element method (S-FEM): A framework for the design of numerical models for desired solutions

Gui-Rong Liu

Journal Article

The shape control over the front-end of excimer laser beam

Zhao Xueqing,Xue Quanxi,Zheng Guoxin,Huang Ke,Xiao Weiwei,Yi Aiping,Liu Jingru

Journal Article

Adaptive simulation of wave propagation problems including dislocation sources and random media

Hassan YOUSEFI, Jamshid FARJOODI, Iradj MAHMOUDZADEH KANI

Journal Article

UPFC setting to avoid active power flow loop considering wind power uncertainty

Shenghu LI, Ting WANG

Journal Article

Adaptive selective ES-FEM limit analysis of cracked plane-strain structures

H. NGUYEN-XUAN,T. RABCZUK

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

Evaluation of the power-generation capacity of wearable thermoelectric power generator

Yang YANG, Jing LIU,

Journal Article

Renewable power for China: Past, present, and future

Eric MARTINOT

Journal Article

Carbon emission impact on the operation of virtual power plant with combined heat and power system

Yu-hang XIA,Jun-yong LIU,Zheng-wen HUANG,Xu ZHANG

Journal Article

Strategy of Manufacturing Quality Power

The Research Group for Manufacturing Quality Power Strategy

Journal Article

Will Germany move into a situation with unsecured power supply?

Harald SCHWARZ

Journal Article