检索结果-南通市图书馆

A new transient stability margin based on dynamic security region and its applications

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2008年第6期51卷 751-760页

作者： XUE AnCheng1, 2 & mei shengwei1 1 State Key Lab of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China 2 Key Lab of Systems and Control, Institute of Systems Science, Chinese Academy of Sciences, Beijing 100190, China State Key Lab of Power Systems Department of Electrical Engineering Tsinghua University Beijing 100084 China

A new transient stability margin is proposed based on a new expression of dynamic security region (DSR) which is developed from the existing expression of DSR. Applications of the DSR based transient stability margin to contingency ranking and screening are discussed. Simulations in the 10-machine 39-bus New England system are performed to show the effectiveness of the proposed DSR based tran-sient stability margin.

关键词： dynamic security region (DSR) transient stability margin contingency screening

在线全文

学校读者我要写书评

暂无评论

基于自激法的小干扰稳定特征值的分布式算法

电力系统自动化 2007年第13期31卷 12-16页

作者：张旭沈沉梅生伟陈颖清华大学电机系电力系统国家重点实验室北京市100084

由于中国电力系统的运行和管理具有分层分区的特点,传统的集中式的小干扰稳定分析方法很难满足在线计算的要求。文中基于带边界分区的互联电网切分方法,从传统的电力系统小干扰稳定分析的自激法出发,提出了小干扰稳定特征值的分布式算... 详细信息

由于中国电力系统的运行和管理具有分层分区的特点,传统的集中式的小干扰稳定分析方法很难满足在线计算的要求。文中基于带边界分区的互联电网切分方法,从传统的电力系统小干扰稳定分析的自激法出发,提出了小干扰稳定特征值的分布式算法。算法在计算过程中只需要各区域传递边界节点状态量等少量数据,适用于电力系统的分布式环境,具有较好的实用性。对IEEE39节点系统的验算结果证明了算法的合理性和有效性。

关键词：自激法小干扰稳定特征值分布式计算

在线全文

学校读者我要写书评

暂无评论

智能电网环境下主从博弈模型及应用实例

系统科学与数学 2014年第11期34卷 1331-1344页

作者：梅生伟魏韡清华大学电机系电力系统国家重点实验室北京100084

工程博弈论立足于应用博弈论的基本理论、建模与求解方法,并考虑工程实际技术条件解决工程设计与试验中的优化决策问题.智能电网作为一个融合先进电力、通讯、控制和计算机技术的巨维信息-物理系统,其优化设计、规划、调度和控制等问题... 详细信息

工程博弈论立足于应用博弈论的基本理论、建模与求解方法,并考虑工程实际技术条件解决工程设计与试验中的优化决策问题.智能电网作为一个融合先进电力、通讯、控制和计算机技术的巨维信息-物理系统,其优化设计、规划、调度和控制等问题本质上属于复杂系统多主体多目标优化决策理论范畴,而由于各优化目标之间的竞争属性以及决策主体的多元化,使得应用工程博弈论突破智能电网面临的上述关键技术瓶颈成为可能,其中主从博弈问题是工程博弈论的难点和热点之一.有鉴于此,论文从非合作博弈角度出发,梳理总结了智能电网环境下的四类典型主从博弈问题,构建了Nash-Stackelberg-Nash博弈模型,提出了一般性求解方法.针对一个零售市场定价与调度的仿真算例,验证了所提模型与方法的有效性和正确性.论文所提方法对研究工程决策中的其他问题具有重要的借鉴价值,同时也为工程博弈论提供了新的理论增长点.

关键词：智能电网工程博弈论主从博弈零售市场

在线全文

学校读者我要写书评

暂无评论

小干扰稳定特征向量和相关因子的分布式算法

电力系统自动化 2007年第14期31卷 7-11页

作者：张旭沈沉梅生伟陈颖清华大学电机系电力系统国家重点实验室北京市100084

在基于自激法的小干扰稳定特征值的分布式算法的基础上,针对小干扰稳定特征分析法中求解特征向量和相关因子的步骤,提出了基于自激法的分布式计算方法。该方法可由各区域协调计算特征值所对应的特征向量及相关因子,在计算过程中仅需要... 详细信息

在基于自激法的小干扰稳定特征值的分布式算法的基础上,针对小干扰稳定特征分析法中求解特征向量和相关因子的步骤,提出了基于自激法的分布式计算方法。该方法可由各区域协调计算特征值所对应的特征向量及相关因子,在计算过程中仅需要各区域与边界区域交换边界节点向量等少量数据,适合中国电力系统分层分区的管理体制。对IEEE 39节点系统的验算结果证明了该算法的合理性和有效性。

关键词：小干扰稳定分布式计算特征向量相关因子

现代电力系统控制评述——清华大学电力系统国家重点实验室相关科研工作缩影及展望

在线全文

学校读者我要写书评

暂无评论

系统科学与数学 2012年第10期32卷 1207-1225页

作者：卢强梅生伟清华大学电机系电力系统国家重点实验室北京100084

改善与提高电力系统稳定性的最经济和最有效的手段是采用先进的控制理论和方法.自20世纪五六十年代以线性系统和最优控制为代表的现代控制理论问世以来,理论创新与工业应用成果丰硕,特别在电力系统中获得了广泛的应用.主要以清华大学电... 详细信息

改善与提高电力系统稳定性的最经济和最有效的手段是采用先进的控制理论和方法.自20世纪五六十年代以线性系统和最优控制为代表的现代控制理论问世以来,理论创新与工业应用成果丰硕,特别在电力系统中获得了广泛的应用.主要以清华大学电力系统国家重点实验室近四十年来在电力系统控制领域的科研工作为主线,梳理总结其中里程碑式的研究成果并对未来电力系统控制理论和技术的发展做出若干展望.

关键词：电力系统非线性控制鲁棒控制半张量积工程博弈论

Energy Management of a Residential Consumer with Uncertain Renewable Generation: A Robust Dual Dynamic Programming Approach

在线全文

学校读者我要写书评

暂无评论

Energy Management of a Residential Consumer with Uncertain R...

第三十九届中国控制会议

作者： Dangwu Liu Zhongjie Guo Feng Chen Xiaodai Xue shengwei mei State Grid Anhui Electric Power CO. LTD. State Key Lab of Control and Simulation of Power Systems and Generation Equipments Department of Electrical EngineeringTsinghua University

This paper studies the dynamic operation of a residential electric energy system with distributed renewable *** streams among the power grid, local renewable plant, storage unit, and demand are considered;the temporal volatility of renewable generation is described by an uncertainty set, and the optimal operation problem gives rise to a multi-stage robust optimization. To deal with the non-anticipativity issue, the robust model is solved via robust dual dynamic programming（RDDP）approach. The the cost-to-go function is approximated by iteratively updating the upper and lower bounds, which can be obtained from forward-pass and backward pass procedures. Case studies validate the performance and advantage of the proposed method.

关键词： Residential energy management battery energy storage renewable generation uncertainty robust dual dynamic programming

Sizing Shared Energy Storage for the Integration of Renewable Generation: A Coalition Game Based Approach

在线全文

cnki会议

学校读者我要写书评

暂无评论

Sizing Shared Energy Storage for the Integration of Renewabl...

第40届中国控制会议

作者： Chuan Wang Wei Wei Xiaodai Xue Laijun Chen shengwei mei Department of Electrical Engineering Tsinghua University New Energy (Photovoltaic) Industry Research Center Qinghai University

The integration of renewable generation and energy storage in the power system has significant potential to mitigate undesirable characteristics of the power output such as intermittency and variability, as well as to increase total profits. However,since each generation part and the energy storage owner typically optimize the planning capacity based on their individual gains,it’s challenging to get the system’s optimal planning decision. This paper proposes a cooperative game based model to size shared energy storage for centralized wind and solar generation. We define the value of energy coalitions as the additional profits and allocate the profits of each player according to nucleous of the cooperative game. An iterative method is put forward to calculate the optimal robust capacity of each participant when the objection is to find the highest value of Rate of Return（RoR）,considering uncertainty sets of wind speed. Finally, numerical results verify the effectiveness of the proposed method and the optimal robust capacities of the generators and the energy storage in this cooperative game based model are also obtained.

关键词： Cooperative Game Renewable Energy Nucleous Robust Capacity

A Distributionally Robust Approach for Transmission and Energy Storage Capacity Planning in a Remote Photovoltaic Power Plant

在线全文

cnki会议

学校读者我要写书评

暂无评论

A Distributionally Robust Approach for Transmission and Ener...

第三十九届中国控制会议

作者： Baomin Fang Rui Xie Wei Wei Yanhe Li shengwei mei Dispatch Control Center State Grid Qinghai Electric Power Company Department of Electrical Engineering Tsinghua University

Photovoltaic（PV） power plants have developed rapidly in the past decade. In China, solar resources are abundant in the west, which is far away from the load center. The PV power plant there has to be connected to the power grid by a long transmission line. To further reduce the impact of its volatility on the power grid, energy storage can be built inside the PV power plant and the capacity requirement of the transmission line decreases. This paper proposes a method that jointly plans the capacity of the transmission and energy storage for a remote PV power plant. Since the historical data of the solar source may not be accurate enough, the distributionally robust optimization（DRO） technique based on Kullback-Leibler divergence（KL-divergence） is adopted, so that the difference between the empirical distribution and the real distribution is considered. Then a tractable form is derived, which comes down to linear programming. The effectiveness of the proposed method is shown through a test case of a 200 MW PV power plant.

关键词： Power system planning renewable energy distributionally robust optimization

A Game Model for Multi-Energy Transaction in a Gas-Heat-Power Network-Coupled System

在线全文

cnki会议

学校读者我要写书评

暂无评论

A Game Model for Multi-Energy Transaction in a Gas-Heat-Powe...

第36届中国控制会议

作者： Yue Chen Wei Wei Feng Liu shengwei mei Shaowei Huang Dept.of Electrical Engineering the State Key Laboratory of Power SystemBeijingChina

ISBN: (纸本)9781538629185

With the development of multi-energy convertors,different systems are coupled with each other both in power flow and market *** of multi-energy transaction patterns and market equilibrium is one of the heated *** theory provides us a powerful tool to settle such *** paper proposes a game model for transaction in integrated multi-energy networks such as a gas-heat-power *** network modeling and individual interest of each system are included.A general structure of such problems is given and solution methodology is put forward to obtain the Nash *** studies demonstrate the effectiveness of the proposed model and the interplay between these three *** prospects for future researches are also given.

关键词： game model gas-heat-power system decoupled algorithm market equilibrium