检索结果-南通市图书馆

Distributed fixed step-size algorithm for dynamic economic dispatch with power flow limits

Science China(Information Sciences) 2021年第1期64卷 110-122页

作者： Kun WANG Zao FU Qian XU Duxin CHEN Lei WANG Wenwu YU The State Grid Zhejiang economic Research Institute School of Cyber Science and Engineering Southeast University School of Mathematics Southeast University

In this study, a discrete-time distributed algorithm is proposed for solving the dynamic economic dispatch problem with active power flow limits and transmission line loss. To avoid the communication burden and implement the algorithm in a favorably distributed manner, the splitting method is used to bypass the centralized updating of the algorithm’s parameters, which is unavoidable when implementing conventional Lagrangian methods. The use of a fixed step-size and distributed update enhances the applicability of the algorithm. The performance and effectiveness of the proposed distributed algorithm are verified via numerical studies on the IEEE 14-bus system.

关键词： dynamic economic dispatch distributed optimization discrete-time algorithm active power flow limit transmission line loss

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Reserve Constrained dynamic economic dispatch with Valve-point Effect:A Two-stage Mixed Integer Linear Programming Approach

引用

CSEE Journal of Power and Energy Systems 2017年第2期3卷 203-211页

作者： Zhaolong Wu Jianying Ding Q.H.Wu Zhaoxia Jing Jiehui Zheng School of Electric Power Engineering South China University of TechnologyGuangzhou 510641China Power Generation Commercial Division Guangdong Yudean Group Co.LTDGuangzhou 510630China

This paper proposes a deterministic two-stage mixed integer linear programming(TSMILP)approach to solve the reserve constrained dynamic economic dispatch(DED)problem considering valve-point effect(VPE).In stage one,the nonsmooth cost function and the transmission loss are piecewise linearized and consequently the DED problem is formulated as a mixed integer linear programming(MILP)problem,which can be solved by commercial solvers.In stage two,based on the solution obtained in stage one,a range compression technique is proposed to make a further exploitation in the subspace of the whole solution domain.Due to the linear approximation of the transmission loss,the solution obtained in stage two dose not strictly satisfies the power balance constraint.Hence,a forward procedure is employed to eliminate the error.The simulation results on four test systems show that TSMILP makes satisfactory performances,in comparison with the existing methods.

关键词： dynamic economic dispatch mixed integer linear programming valve-point effect spinning reserve transmission loss non-convex optimization

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Combining electricity load forecasting and dynamic economic dispatch by a time fusion framework

Combining electricity load forecasting and dynamic economic ...

引用

第40届中国控制会议

作者： Dexuan Zou Kefeng Xuan Yongzhao Han Xiaozhou Zhou Yu Zhang Yufan Zhu School of Electrical Engineering and Automation Jiangsu Normal University Service Operation Mercedes-Benz AUS

Traditional method carries out electricity load forecasting（ELF） and dynamic economic dispatch（DED） separately and only provides DED with one group of power loads at the end of ELF in each period. In this situation, DED will not schedule the power outputs of conventional units for current period until ELF is finished. In this paper, we propose a time fusion framework（TFF） to improve the comprehensive efficiency of ELF and DED. TFF introduces an overlapping ratio of time to control the overlap between ELF and DED in each period, which enhances the relationship between the two works. Accordingly,ELF can provide DED with more than one group of power loads, and DED can be involved in the calculations on the power outputs of conventional units in advance rather than waiting for the final power loads of ELF passively. One instance is used to investigate and compare the performance of two methods, and experimental results show that the new method with different overlapping ratios have reduced fuel cost to relatively low levels compared to traditional one in thirty independent runs.

关键词： Electricity load forecasting dynamic economic dispatch Power loads Time fusion framework Overlapping ratio of time Fuel cost

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Data-driven Optimal dynamic dispatch for Hydro-PV-PHS Integrated Power Systems Using Deep Reinforcement Learning Approach

引用

CSEE Journal of Power and Energy Systems 2023年第3期9卷 846-858页

作者： Jingxian Yang Jichun Liu Yue Xiang Shuai Zhang Junyong Liu College of Electrical Engineering Sichuan UniversityChengdu 610065China State Grid Sichuan Electric Power Company Chengdu 610065China

To utilize electricity in a clean and integrated manner,a zero-carbon hydro-photovoltaic(PV)-pumped hydro storage(PHS)integrated power system is studied,considering the uncertainties of PV and load demand.It is a challenge for operators to develop a dynamic dispatch mechanism for such a system,and traditional dispatch methods are difficult to adapt to random changes in the actual environment.Therefore,this study proposes a real-time dynamic dispatch strategy considering economic operation and complementary regulatory ability.First,the dynamic dispatch of a hydro-PV-PHS integrated power system is presented as a multi-objective optimization problem and the weight factor between different goals is effectively calculated using information entropy.Afterwards,the dispatch model is converted into the Markov decision process,where the dynamic dispatch decision is formulated as a reinforcement learning framework.Then,a deep deterministic policy gradient(DDPG)is deployed towards the online decision for dispatch in continuous action spaces.Finally,a case study is applied to evaluate the performance of the proposed method based on a real hydroPV-PHS integrated power system in China.Simulations show that the system agent reduces the power volatility of supply by 26.7%after hydropower regulating and further relieves power fluctuation at the point of common coupling(PCC)to the upperlevel grid by 3.28%after PHS participation.The comparison results verify the effectiveness of the proposed method.

关键词： DDPG dynamic economic dispatch hydro-PVPHS integrated power system information entropy uncertainties

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

economic dispatch constrained by central multi-period security for Global Energy Interconnection and its application in the Northeast Asia

引用

Global Energy Interconnection 2018年第2期1卷 108-114页

作者： Haibin Wan Yang Cao Wei Wang Qingrun Yang Dongil Lee Tao Ding Huiming Zhang Global Energy Interconnection Development and Cooperation Organization China Electric Power Research Institute Department of Electrical Engineering Xi’an Jiaotong University Seoul National University Electric Power Research Institute State Grid Yangquan Power Supply Company

In recent years, the global energy interconnection(GEI) has more and more profound influence around the world, which is a highly practical way for humans to handle the energy crisis. In the studies of GEI, the economic dispatch(ED) is a basic and important content. In this paper, a model of dynamic economic dispatch(DED) of GEI is presented, which include the renewable energy generation. The objective function of this model is composed of the operating costs and the renewable energy curtailment. A series of case studies for the transnational energy interconnection in Northeast Asia are given to verify the superiority of GEI and for further analysis.

关键词： Global energy interconnection dynamic economic dispatch Renewable energy resources

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Bee Spices Transition with Rapid Global Optimization Algorithm

Bee Spices Transition with Rapid Global Optimization Algorit...

引用

作者： Xu-ming HAN Lin-lin WANG Li ZHENG Yuan-yuan DANG Li-min WANG School of Computer Science and Engineering Changchun University of Technology School of Management Science and Information Engineering Jilin University Finance and Economics Changchun

Swarm intelligence algorithm is a general term for a class of intelligent groups with self-organized behavior. A novel Artificial Bee Colony algorithm is introduced in this paper, named Bee Spices Transition with Rapid Global Optimization Algorithm（BSTRGOA）. The contribution of BSTRGOA algorithm consists of two parts. First, the evolution strategy of bee species balances the global exploration ability and the local search ability. Second, the fast search mechanism of global optimization is proposed. It reinforces global learning of the colony. The BSTRGOA algorithm is experimented with the CEC 2017 benchmark functions. It shows the BSTRGOA algorithm can effectively improve the convergence speed and optimization accuracy. And the BSTRGOA algorithm has a good performance in solving the problem of multi-dimensional function optimization. In addition, BSTRGOA algorithm is also applicable to dynamic economic scheduling analysis, and the conclusion also shows it can significantly improve the time efficiency.

关键词： Bee spices transition Function optimization Meta heuristic Artificial bee colony dynamic economic dispatch

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：