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Techno-economic assessment of providing control energy reserves with a biogas plant
Ervin Saracevic, David Woess, Franz Theuretzbacher, Anton Friedl, Angela Miltner
《化学科学与工程前沿(英文)》 2018年 第12卷 第4期 页码 763-771 doi: 10.1007/s11705-018-1776-x
Grid stability is being challenged by the increasing integration of power plants with volatile power generation into the energy system. Power supply fluctuations must be compensated by energy system flexibility. The storability of the energy carrier enables biogas plants to generate power flexibly. In this study, the technical and economic effects of providing positive secondary control energy reserves with an Austrian biogas plant were assessed. The plant’s main focus lies in biomethane production with the option of heat and power generation through combined heat and power (CHP) units. A detailed simulation model of the investigated biogas plant was developed, which is presented in this work. Ex-post simulations of one year of flexible plant operation were conducted with this model. The findings show that the installed biogas storage capacity is sufficient to provide control energy reserves while simultaneously producing biomethane. Profitability of providing control energy reserves largely depends on the prices at the control energy market and on CHP unit start-up costs. A cost efficiency analysis demonstrated that investing in a hot water tank with a volume of 5 m3 for short-term heat storage turned out to be economically viable.
关键词: biogas plant process simulation control energy reserves economic assessment gas storage
中国深部地下空间储能的理论和技术挑战 Review
杨春和, 王同涛, 陈海生
《工程(英文)》 2023年 第25卷 第6期 页码 168-181 doi: 10.1016/j.eng.2022.06.021
Deep underground energy storage is the use of deep underground spaces for large-scale energy storage, which is an important way to provide a stable supply of clean energy, enable a strategic petroleum reserve, and promote the peak shaving of natural gas. Rock salt formations are ideal geological media for large-scale energy storage, and China is rich in salt rock resources and has a major shortage of energy storage space. Compared with the salt domes in other countries, the salt rock formations in China are typical lacustrine bedded salt rocks characterized by thin beds, high impurity content, and many interlayers. The development of large-scale energy storage in such salt formations presents scientific and technical challenges, including: ① developing a multiscale progressive failure and characterization method for the rock mass around an energy storage cavern, considering the effects of multifield and multiphase coupling; ② understanding the leakage evolution of large-scale deep underground energy storage caverns; ③ understanding the long-term performance evolution of large-scale deep underground energy storage caverns; ④ developing intelligent construction technologies for the deep underground salt caverns used for energy storage; and ⑤ ensuring the long-term function of deep underground energy storage spaces. The solution to these key scientific and technological problems lies in establishing a theoretical and technical foundation for the development of large-scale deep underground energy storage in China.
关键词: Energy reserves Deep underground energy storage Bedded rock salt Salt cavern Rock mechanics
张进之
《中国工程科学》 2001年 第3卷 第4期 页码 46-55
以最小阻力定律、体积不变条件和秒流量相等条件为内容的经典轧制理论,经试验、演绎形成了较完整的轧制应用技术科学体系,这种体系所反映的是静态规律。在轧制理论发展中引入控制论、信息论、计算机科学等高新技术,对轧制过程进行控制。在轧制理论发展史上,弹跳方程建立之前是以力学为基础建立的经典轧制理论,之后为以力学和控制论为基础建立的基本轧制工艺控制理论。文章提出工艺控制理论概念,是在基本轧制工艺控制理论的基础上建立的新的理论体系,主要内容包括:在连轧张力理论中反映了张力的负反馈,建立了连轧张力理论体系;在厚控过程中,解决扰动的检测问题;在板形理论中,定义了对偶参数,确立了与 厚控理论相似的板形理论体系。
以“功能”储备补足“资源”储备——甲醇战略储备替代1/10~1/5的石油战略储备
金涌,陈丙珍
《中国工程科学》 2008年 第10卷 第11期 页码 4-6
对世界所有大国而言,石油战略储备是十分重要的。为了满足国家安全的需要,世界不同国际组织如联合国、欧盟等都建议设立3个月的石油战略储备。对于中国而言,这就需要战略储备石油3×107~9×107 t,这需要一个长时间段和大量资金注入才能完成。如果基于“功能”储备补足“资源”储备的一个新理念来思考,这一目标可以较容易地完成。即储备一定百分数的甲醇来替代石油,则国家安全也可以得到保障。
Optimal dynamic emergency reserve activation using spinning, hydro and demand-side reserves
S. Surender REDDY,P. R. BIJWE,A. R. ABHYANKAR
《能源前沿(英文)》 2016年 第10卷 第4期 页码 409-423 doi: 10.1007/s11708-016-0431-9
关键词: demand-side reserves dynamic reserve activation approach hydro power units post contingency sequential reserve activation approach spinning reserves
Design and control optimization of energy systems of smart buildings today and in the near future
Shengwei WANG, Wenjie GANG
《工程管理前沿(英文)》 2017年 第4卷 第1期 页码 58-66 doi: 10.15302/J-FEM-2017005
关键词: Design optimization Optimal control Smart building Energy efficiency
QPSO-ILF-ANN-based optimization of TBM control parameters considering tunneling energy efficiency
《结构与土木工程前沿(英文)》 2023年 第17卷 第1期 页码 25-36 doi: 10.1007/s11709-022-0908-z
关键词: tunnel boring machine control parameter optimization quantum particle swarm optimization artificial neural network tunneling energy efficiency
Effect of repeated gonadotropin stimulation on ovarian reserves and proliferation of ovarian surface
Linlin LIANG, Bei XU, Guijin ZHU
《医学前沿(英文)》 2009年 第3卷 第2期 页码 220-226 doi: 10.1007/s11684-009-0037-2
关键词: gonadotropin-releasing hormone ovarian reserve embryo developmental ability ovarian surface epithelium
Dynamic contribution of variable-speed wind energy conversion system in system frequency regulation
Yajvender Pal VERMA, Ashwani KUMAR
《能源前沿(英文)》 2012年 第6卷 第2期 页码 184-192 doi: 10.1007/s11708-012-0185-y
关键词: doubly fed induction generator (DFIG) load frequency control inertial control wind energy conversion system (WECS)
Modeling and control of photovoltaic energy conversion connected to the grid
Rebei NAJET, Ben Ghanem BELGACEM, Hasnaoui OTHMAN
《能源前沿(英文)》 2012年 第6卷 第1期 页码 35-46 doi: 10.1007/s11708-012-0169-y
关键词: photovoltaic generator (PVG) maximum power point tracker grid-connected static converters
Modeling and control of a permanent magnet synchronous generator dedicated to standalone wind energy
Louar FATEH,Ouari AHMED,Omeiri AMAR,Djellad ABDELHAK,Bouras LAKHDAR
《能源前沿(英文)》 2016年 第10卷 第2期 页码 155-163 doi: 10.1007/s11708-016-0410-1
关键词: wind turbine permanent magnet synchronous generator (PMSG) converter proportional-integral (PI) control direct control of the torque (DTC) regulation
Bing XU, Min CHENG
《机械工程前沿(英文)》 2018年 第13卷 第2期 页码 151-166 doi: 10.1007/s11465-018-0470-5
This paper presents a survey of recent advancements and upcoming trends in motion control technologies employed in designing multi-actuator hydraulic systems for mobile machineries. Hydraulic systems have been extensively used in mobile machineries due to their superior power density and robustness. However, motion control technologies of multi-actuator hydraulic systems have faced increasing challenges due to stringent emission regulations. In this study, an overview of the evolution of existing throttling control technologies is presented, including open-center and load sensing controls. Recent advancements in energy-saving hydraulic technologies, such as individual metering, displacement, and hybrid controls, are briefly summarized. The impact of energy-saving hydraulic technologies on dynamic performance and control solutions are also discussed. Then, the advanced operation methods of multi-actuator mobile machineries are reviewed, including coordinated and haptic controls. Finally, challenges and opportunities of advanced motion control technologies are presented by providing an overall consideration of energy efficiency, controllability, cost, reliability, and other aspects.
关键词: motion control electrohydraulic control energy efficiency mobile machineries
Ridha CHEIKH, Arezki MENACER, L. CHRIFI-ALAOUI, Said DRID
《能源前沿(英文)》 2020年 第14卷 第1期 页码 180-191 doi: 10.1007/s11708-018-0537-3
关键词: permanent magnet synchronous generator wind energy conversion system stochastic differential geometric feedback linearization maximum power point tracking Lyapunov robust control
Azzouz TAMAARAT,Abdelhamid BENAKCHA
《能源前沿(英文)》 2014年 第8卷 第3期 页码 371-378 doi: 10.1007/s11708-014-0318-6
关键词: wind power doubly fed induction generator (DFIG) vector control active power reactive power maximum power point tracking (MPPT)
C. K. ARAVIND,G. SARAVANA ILANGO,C. NAGAMANI
《能源前沿(英文)》 2015年 第9卷 第1期 页码 31-42 doi: 10.1007/s11708-015-0347-9
关键词: standalone hybrid power system battery energy storage system (BESS) power conversion
标题 作者 时间 类型 操作
Techno-economic assessment of providing control energy reserves with a biogas plant
Ervin Saracevic, David Woess, Franz Theuretzbacher, Anton Friedl, Angela Miltner
期刊论文
Optimal dynamic emergency reserve activation using spinning, hydro and demand-side reserves
S. Surender REDDY,P. R. BIJWE,A. R. ABHYANKAR
期刊论文
Design and control optimization of energy systems of smart buildings today and in the near future
Shengwei WANG, Wenjie GANG
期刊论文
QPSO-ILF-ANN-based optimization of TBM control parameters considering tunneling energy efficiency
期刊论文
Effect of repeated gonadotropin stimulation on ovarian reserves and proliferation of ovarian surface
Linlin LIANG, Bei XU, Guijin ZHU
期刊论文
Dynamic contribution of variable-speed wind energy conversion system in system frequency regulation
Yajvender Pal VERMA, Ashwani KUMAR
期刊论文
Modeling and control of photovoltaic energy conversion connected to the grid
Rebei NAJET, Ben Ghanem BELGACEM, Hasnaoui OTHMAN
期刊论文
Modeling and control of a permanent magnet synchronous generator dedicated to standalone wind energy
Louar FATEH,Ouari AHMED,Omeiri AMAR,Djellad ABDELHAK,Bouras LAKHDAR
期刊论文
Motion control of multi-actuator hydraulic systems for mobile machineries: Recent advancements and future
Bing XU, Min CHENG
期刊论文
Robust nonlinear control via feedback linearization and Lyapunov theory for permanent magnet synchronousgenerator-based wind energy conversion system
Ridha CHEIKH, Arezki MENACER, L. CHRIFI-ALAOUI, Said DRID
期刊论文
Performance of PI controller for control of active and reactive power in DFIG operating in a grid-connectedvariable speed wind energy conversion system
Azzouz TAMAARAT,Abdelhamid BENAKCHA
期刊论文