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Low-Carbon Dispatching for Virtual Power Plant with Aggregated Distributed Energy Storage Considering Spatiotemporal Distribution of Cleanness Value

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Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 346-358页

作者： Hongchao Gao Tai Jin Guanxiong Wang Qixin Chen chongqing Kang Jingkai Zhu State Key Laboratory of Power System Operation and Control Department of Electrical EngineeringTsinghua UniversityBeijing 100084China Sichuan Energy Internet Research Institute Tsinghua university Chengdu 200016China Power Dispatching and Control Center of Shanghai Municipal Electric Power Company Shanghai 200122China IEEE

The scale of distributed energy resources is increasing,but imperfect business models and value transmission mechanisms lead to low utilization ratio and poor *** address this issue,the concept of cleanness value of distributed energy storage(DES)is proposed,and the spatiotemporal distribution mechanism is discussed from the perspectives of electrical energy and *** on this,an evaluation system for the environmental benefits of DES is constructed to balance the interests between the aggregator and the power system ***,an optimal low-carbon dispatching for a virtual power plant(VPP)with aggregated DES is constructed,where-in energy value and cleanness value are both *** achieve the goal,a green attribute labeling method is used to establish a correlation constraint between the nodal carbon potential of the distribution network(DN)and DES behavior,but as a cost,it brings multiple nonlinear ***,a solution method based on the convex envelope(CE)linear re-construction method is proposed for the multivariate nonlinear programming problem,thereby improving solution efficiency and ***,the simulation verification based on the IEEE 33-bus DN is *** simulation results show that the multidimensional value recognition of DES motivates the willingness of resource users to ***,resolving the impact of DES on the nodal carbon potential can effectively alleviate overcompensation of the cleanness value.

关键词： Distributed energy storage virtual power plant(VPP) spatiotemporal distribution low-carbon dispatching

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Communication Resources Allocation for Time Delay Reduction of Frequency Regulation Service in High Renewable Penetrated Power System

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CSEE Journal of Power and Energy Systems 2024年第2期10卷 468-480页

作者： Hongjie He Ning Zhang chongqing Kang Song Ci Fei Teng Goran Strbac State Key Laboratory of Power Systems Department of Electrical EngineeringTsinghua UniversityBeijing 100084China department of Electrical and Electronic Engineering Imperial College LondonSW72BULondonU.K

The high renewable penetrated power system has severe frequency regulation *** resources can provide frequency regulation services but are limited by com-munication time *** paper proposes a communication resources allocation model to reduce communication time delay in frequency regulation *** device resources and wireless spectrum resources are allocated to distributed resources when they participate in frequency *** reveal impact of communication resources allocation on time delay reduction and frequency regulation ***,we study communication resources allocation solution in high renewable energy penetrated power *** provide a case study based on the HRP-38 *** show communication time delay decreases distributed resources'ability to provide frequency regulation *** the other hand,allocating more communication resources to distributed resources'communica-tion services improves their frequency regulation *** power systems with renewable energy penetration above 70%,required communications resources are about five times as many as 30%renewable energy penetrated power systems to keep frequency performance the *** Terms-Communication resources allocation,commun-ication time delay,distributed resource,frequency regulation,high renewable energy penetrated power system.

关键词： Communication resources allocation communication time delay distributed resource frequency regulation high renewable energy penetrated power system

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Optimal Virtual Battery Model for Aggregating Storage-Like Resources with Network Constraints

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CSEE Journal of Power and Energy Systems 2024年第4期10卷 1843-1847页

作者： Zhenfei Tan Ao Yu Haiwang Zhong Xianfeng Zhang Qing Xia chongqing Kang department of Electrical Engineering and Sichuan Energy Internet Research Institute Tsinghua UniversityBeijing 100084China Science and Technology Institute of China Three Gorges Corporation Hubei 430010China

A virtual battery(VB)provides a succinct interface for aggregating distributed storage-like resources(SLR)to interact with a utility-level *** overcome the drawbacks of existing VB models,including conservatism and neglecting network constraints,this paper optimizes the power and energy parameters of VB to enlarge its flexibility *** optimal VB is identified by a robust optimization problem with decision-dependent *** algorithm based on the Benders decomposition is developed to solve this *** proposed method yields the largest VB satisfying constraints of both network and *** studies verify the superiority of the optimal VB in terms of security guarantee and less conservatism.

关键词： Aggregation decision-dependent uncertainty flexibility robust optimization virtual battery

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A Distributed Computing Algorithm for Electricity Carbon Emission Flow and Carbon Emission Intensity

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Protection and Control of Modern Power Systems 2024年第2期9卷 138-146页

作者： Xingping Wu Wei Yang Ning Zhang Chunlei Zhou Jinwei Song chongqing Kang Big Data Center of China Network Chinese Society of Electrical Engineering State Network Big Data Center department of Electrical Engineering Tsinghua UniversityBeijingChina 不详 Big Data Center State Grid Corporation of ChinaBeijing 100052China department of Electrical Engi-neering Tsinghua UniversityBeijingChina

The calculation of the indirect carbon emis-sion is essential for power system policy making,carbon market development,and power grid *** em-bedded carbon emissions of the electricity system are commonly calculated by carbon emission flow ***,the calculation procedure is time-consuming,especially for a country with 500-1000 thousand nodes,making it challenging to obtain nationwide carbon emis-sions intensity ***,the calculation procedure requires to gather all the grid data with high classified levels from different power grid companies,which can prevent data sharing and cooperation among different *** paper proposes a distributed computing algorithm for indirect carbon emission that can reduce the time consumption and provide privacy *** core idea is to utilize the sparsity of the nodes’flow matrix of the nationwide grid to partition the computing procedure into parallel sub-procedures exe-cuted in multiple *** flow and structure data of the regional grid are transformed irreversibly for pri-vacy protection,when transmitted between terminals.A 1-master-and-N-slave layout is adopted to verify the *** algorithm is suitable for large grid compa-nies with headquarter and branches in provinces,such as the State Grid Corporation of China.

关键词： Carbon emission flow cooperative computing carbon emission intensity matrix block par-tition power flow tracing parallel computing privacy protection

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袁家军胡衡华王炯程丽华会见出席2.2.重庆国际友好城市合作大会重要嘉宾

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重庆与世界 2024年第5期 16-19页

作者： chongqing Daily 重庆日报

5月2.日上午，市委书记袁家军，市委副书记、市长胡衡华，市人大常委会主任王炯，市政协主席程丽华会见了来渝出席2.2.重庆国际友好城市合作大会的31个国家48个城市的重要嘉宾。老挝占巴塞省省委书记兼省长阿伦赛·顺那拉，白俄罗斯明...

5月2.日上午，市委书记袁家军，市委副书记、市长胡衡华，市人大常委会主任王炯，市政协主席程丽华会见了来渝出席2.2.重庆国际友好城市合作大会的31个国家48个城市的重要嘉宾。老挝占巴塞省省委书记兼省长阿伦赛·顺那拉，白俄罗斯明斯克州执行委员会主席图尔钦·亚历山大，

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Optimal value functions of generalized semi-infinite min-max programming on a noncompact set

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Science China mathematics 2005年第2期48卷 261-276页

作者： WANG Changyu, YANG Xiaoqi & YANG Xinmin Institute oi Operations Research, Qufu normal university, Qufu 2.3165, China {2. of Applied mathematics, Dalian university of Technology, Dalian 11602., China {2. of Applied mathematics, The Hong Kong Polytechnic university, Hong Kong, China department of mathematics, chongqing normal university, chongqing 400047, China Institute of Operations Research Qufu Normal University Qufu China department of Applied mathematics Dalian University of Technology Dalian China department of Applied mathematics The Hong Kong Polytechnic University Hong Kong China department of mathematics Chongqing Normal University Chongqing China

In this paper, we study optimal value functions of generalized semi-infinite min-max programming problems on a noncompact set. Directional derivatives and subdifferential characterizations of optimal value functions are given. Using these properties,we establish first order optimality conditions for unconstrained generalized semi-infinite programming problems.

关键词： optimal value function, directional derivative, subdifferential, semi-infinite programming, first order optimality condition.

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A note on the crossed product R(A, α) associated with PSL_2.R)

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Science China mathematics 2008年第11期51卷 2081-2088页

作者： WU WenMing 1 School of Mathematical and Computer Science, chongqing normal university, chongqing 400047, China 2.{2. of Mathematical Science, Tsinghua university, Beijing 100084, China School of Mathematical and Computer Science Chongqing Normal University Chongqing China department of Mathematical Science Tsinghua University Beijing China

Given the hyperbolic measure dxdy/y2.on the upper half plane H, the rational actions of PSL2.R) on H induces a continuous unitary representation α of this group on the Hilbert space L2.H, dxdy/y2.. Supposing that A = {Mf : f ∈ L∞(H, dxdy/y2.}, we show that the crossed product R(A,α) is of type I. In fact, the crossed product R(A,α) is *-isomorphic to the von Neumann algebra B(L2.P,ν))■LK, where LK is the abelian group von Neumann algebra generated by the left regular representation of K.

关键词： crossed product rational actions PSL2.R) von Neumann algebras

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Maxima with random indexes

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Chinese Science Bulletin 1997年第21期42卷 1767-1771页

作者： XIE Shengrongdepartment of mathematics, Southwest China normal {2., chongqing 630715, China department of mathematics Southwest China Normal University Chongqing China

LET {ξi} be a sequence of random variables and Mn = =V ξi, which connect asymptoticallysome regularly varying functions. Let {Nn} be a sequence of nonnegative integer-valued ran-dom variables. In this note the limit... 详细信息

关键词： regularly varying function maximum random index.

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SYMMETRIC DUALITY FOR A CLASS OF MULTIOBJECTIVE FRACTIONAL PROGRAMMING

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Systems Science and Mathematical Sciences 1997年第1期10卷 66-74页

作者： YANG Xinmin (department of mathematics, chongqing normal university, {2. 630047, China) 重庆师范学院数学系重庆

A pair of symmetric duals for a class of nondifferentiable multiobjective fractional programmings is formulated, and appropriate duality theorems are established.

关键词： Symmetric duality proper efficient solution multiobjective fractional programming generalized invexity nondifferentiable

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Some Duality Theorems in Nonsmooth Generalized Convex Programming

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Systems Science and Systems Engineering 1998年第3期8卷 64-72页

作者： ZENG Renying department of mathematics, chongqing Teachers College,chongqing 400047

In this paper, we use the concepts of (F, ρ) invexity, (F, ρ) quasiinvexity and (F,ρ) pseudoinvexity etc. to discuss the generalized convex programming min f(x) s.t. g i(x)  0 (i=1,…,m) g j(x)=0 (j=1,…, n), x ∈ Xand obtain various duality theorems. Where X is a Frechet space. f,g i(i=1,…, m) and h j(j=1, …, n) are functions from X to R 1.

关键词： frechet space (F ρ) invexity mathematical programming duality theorem

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