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基于碳卫星与电力排放数据的碳计量

电力系统自动化 2024年第1期48卷 2-9页

作者：章政文顾津锦赵俊华黄建伟吴海峰文福拴香港中文大学(深圳)理工学院广东省深圳市518100 悉尼大学电气与信息工程学院澳大利亚悉尼2006 香港中文大学(深圳)高等金融研究院广东省深圳市518100 浙江大学电气工程学院浙江省杭州市310027

目前,基于温室气体卫星遥感探测技术的碳感知正逐步成为新一代碳计量方法的重要组成部分。然而,从碳卫星数据中准确提取由人类活动产生的碳排放数据是一项至关重要且极具挑战性的任务。文中结合碳卫星与电力排放数据,提出一种新的人工... 详细信息

目前,基于温室气体卫星遥感探测技术的碳感知正逐步成为新一代碳计量方法的重要组成部分。然而,从碳卫星数据中准确提取由人类活动产生的碳排放数据是一项至关重要且极具挑战性的任务。文中结合碳卫星与电力排放数据,提出一种新的人工智能算法,以实现准确的碳排放计量。首先,介绍了所使用的包括碳卫星和电力数据在内的多模态数据源,并设计了相应的数据筛选方法。然后,提出了考虑此多模态数据特性的深度学习方法,构建反映碳卫星数据、发电量数据与碳源碳排放量之间函数关系的数据驱动模型。最后,基于美国OCO-2碳卫星的碳浓度遥感数据及美国1304家火力发电厂的连续烟气监测系统数据验证了所提方法在发电厂碳排放量计量问题上的有效性。

关键词：碳卫星电力人工智能深度学习碳排放碳计量

Evaluation index system of shared energy storage market towards renewable energy accommodation scenario:A China’s Qinghai province context

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Global Energy Interconnection 2022年第1期5卷 77-95页

作者： Baomin Fang Weiqiang Qiu Maochun Wang Wei Zhou Zhenzhi Lin fushuan wen State Grid Qinghai Electric Power Company Xining 810008P.R.China College of Electrical Engineering Zhejiang UniversityHangzhou 310027P.R.China

With the ever-increased installed capacity of renewable energy generation units in a power system,the so-called shared energy storage(SES),a novel business model under the umbrella of the shared economy principle,has the potential to play an essential role in the accommodation of renewable energy ***,unified evaluation standards and methods,which can help decision-makers analyze the performance of the SES market,are still not *** this paper,an evaluation index system of the SES market is designed based on the trading rules of China’s Qinghai province and the structure-conduct-performance(SCP)analytical ***,the definition and characteristics of the indices,which can show the performance of the SES market from different perspectives,are ***,the ideal cases are presented as the evaluation benchmark based on the development expectation of the SES market,and the analytic hierarchy process(AHP)and the technique for order preference by similarity to an ideal solution(TOPSIS)are applied to evaluate the SES market ***,a case study based on actual data of the SES trading pilot project in Qinghai shows that the evaluation index system can reflect the operation status,existing problems and influencing factors of the SES market.

关键词： Shared energy storage(SES) Renewable energy accommodation scenario Evaluation index system Ancillary service market

基于时间序列神经分层插值模型的光伏功率超短期多步预测

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智慧电力 2024年第4期52卷 69-77页

作者：李楠刘佳佳赖心怡杨志远王泽亮文福拴国网湖北荆门供电公司湖北荆门448000 浙江大学海南研究院海南三亚572025

针对光伏功率预测准确性受数据质量和外部变量影响的问题,提出一种结合外生变量分析、数据质量控制以及时间序列神经分层插值(N-HiTS)模型的光伏功率超短期多步预测方法。首先,提出用于筛选外生变量的综合相关性度量(ICM)指标,并采用K近... 详细信息

针对光伏功率预测准确性受数据质量和外部变量影响的问题,提出一种结合外生变量分析、数据质量控制以及时间序列神经分层插值(N-HiTS)模型的光伏功率超短期多步预测方法。首先,提出用于筛选外生变量的综合相关性度量(ICM)指标,并采用K近邻(KNN)算法与线性插值策略处理数据缺失问题。然后,引入N-HiTS长时间序列预测模型,通过多尺度信号采样和分层插值提高模型对长时间序列数据的处理能力。最后,通过算例对所提方法与传统光伏功率预测方法进行对比分析,验证了所提方法的预测准确性。

关键词：光伏功率预测时间序列神经分层插值模型(N-HiTS) 综合相关性度量(ICM) K近邻(KNN) 线性插值

Data-driven Two-step Day-ahead Electricity Price Forecasting Considering Price Spikes

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Journal of Modern Power Systems and Clean Energy 2023年第2期11卷 523-533页

作者： Shengyuan Liu Yicheng Jiang Zhenzhi Lin fushuan wen Yi Ding Li Yang School of Electrical Engineering Zhejiang UniversityHangzhou 310027China School of Electrical Engineering Shandong UniversityJinan 250061China State Grid Zhejiang Electric Power Corporation Hangzhou 310007ChinaHangzhou 310027China

In the electricity market environment,electricity price forecasting plays an essential role in the decision-making process of a power generation company,especially in developing the optimal bidding strategy for maximizing ***,it is necessary for a power generation company to develop an accurate electricity price forecasting *** this background,this paper proposes a two-step day-ahead electricity price forecasting algorithm based on the weighted Knearest neighborhood(WKNN)method and the Gaussian process regression(GPR)*** the first step,several predictors,i.e.,operation indicators,are presented and the WKNN method is employed to detect the day-ahead price spike based on these *** the second step,the outputs of the first step are regarded as a new predictor,and it is utilized together with the operation indicators to accurately forecast the electricity price based on the GPR *** proposed algorithm is verified by actual market data in Pennsylvania-New JerseyMaryland Interconnection(PJM),and comparisons between this algorithm and existing ones are also made to demonstrate the effectiveness of the proposed *** results show that the proposed algorithm can attain accurate price forecasting results even with several price spikes in historical electricity price data.

关键词： Electricity market electricity price forecasting price spike weighted K-nearest neighborhood(WKNN) Gaussian process regression(GPR).

Optimal Pricing Strategy for Data Center Considering Demand Response and Renewable Energy Source Accommodation

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Journal of Modern Power Systems and Clean Energy 2023年第1期11卷 345-354页

作者： Chenwei Jiang Chung-Li Tseng Yizheng Wang Zhou Lan fushuan wen Fei Chen Liang Liang School of Electrical Engineering Zhejiang UniversityHangzhou 310027China Economic and Technology Research Institute State Grid Zhejiang Electric Power Co.Ltd.Hangzhou 310000China UNSW Business School The University of New South WalesSydneyAustralia Department of Electrical Power Engineering and Mechatronics Tallinn University of TechnologyEstonia Jiaxing Power Supply Company State Grid Zhejiang Electric Power Co.Ltd.Jiaxing 314000China IEEE

With the continuous development of information technology,data centers(DCs)consume significant and evergrowing amounts of electrical *** energy sources(RESs)can act as clean solutions to meet this requirement without polluting the *** DC serves numerous users for their data service demands,which are regarded as flexible *** this paper,the willingness to pay and time sensitivities of DC users are firstly explored,and the user-side demand response is then devised to improve the overall benefits of DC ***,a Stackelberg game between a DC and its users is *** upper-level model aims to maximize the profit of the DC,in which the time-varying pricing of data services is optimized,and the lower-level model addresses user’s optimal decisions for using data services while balancing their time and cost *** original bi-level optimization problem is then transformed into a single-level problem using the Karush-Kuhn-Tucker optimality conditions and strong duality theory,which enables the problem to be solved ***,case studies are conducted to demonstrate the feasibility and effectiveness of the proposed method,as well as the effects of the time-varying data service price mechanism on the RES accommodation.

关键词： Data center(DC) demand response(DR) pricing strategy renewable energy source(RES) Stackelberg game

Power-to-gas technology in energy systems:current status and prospects of potential operation strategies

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Journal of Modern Power Systems and Clean Energy 2017年第3期5卷 439-450页

作者： Weijia LIU fushuan wen Yusheng XUE College of Electrical Engineering Zhejiang UniversityHangzhou 310027China Department of Electrical and Electronic Engineering Universiti Teknologi BruneiBandar Seri Begawan BE1410Negara Brunei Darussalam State Grid Electric Power Research Institute Nanjing 210003China

Regarded as a long-term, large capacity energy storage solution, commercialized power-to-gas(PtG) technology has attracted much research attention in recent *** plants and natural gas-fired power plants can form a close loop between an electric power system and a natural gas network. An interconnected multi-energy system is believed to be a solution to the future efficient and environmental friendly energy systems. However, some crucial issues require in-depth analysis before PtG plants can be economically implemented. This paper discusses current development status and potential application of PtG plants in the future interconnected multi-energy systems, and further analyzes the costs and benefits of PtG plants in different application scenarios. In general, the PtG plants are not economical efficient based on current technologies and costs. But the situation is likely to change with the development of PtG technologies and interconnected operation of gas-electricity energy system.

关键词： Power to gas Energy storage Power system economics Electricity market Renewable energy Multienergy system

“新型电力系统数字化关键技术综述”专辑评述

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电力系统自动化 2024年第6期48卷 1-12页

作者：李鹏刘念胡秦然周全李知艺于浩孙冰严正文福拴薛禹胜智能电网教育部重点实验室(天津大学) 天津市300072 新能源电力系统国家重点实验室(华北电力大学) 北京市102206 东南大学电气工程学院江苏省南京市210096 湖南大学电气与信息工程学院湖南省长沙市410082 浙江大学电气工程学院浙江省杭州市310027 电力传输与功率变换控制教育部重点实验室(上海交通大学) 上海市200240 南瑞集团有限公司(国网电力科学研究院有限公司) 江苏省南京市211106 智能电网保护和运行控制国家重点实验室江苏省南京市211106

数字化是推动新型电力系统发展的重要动力,已成为广受学术界和产业界关注的热点技术。为此,《电力系统自动化》编辑部组织了“新型电力系统数字化关键技术综述”专辑,系统化介绍了新型电力系统数字化基础元件装备、边缘计算技术、通信... 详细信息

数字化是推动新型电力系统发展的重要动力,已成为广受学术界和产业界关注的热点技术。为此,《电力系统自动化》编辑部组织了“新型电力系统数字化关键技术综述”专辑,系统化介绍了新型电力系统数字化基础元件装备、边缘计算技术、通信安全与防护、智能化调度决策等一系列技术成果,代表了本领域最新技术成果和先进经验。文中立足于新型电力系统数字化发展的整体趋势,对专辑论文按研究方向进行了系统性梳理,对其核心成果与观点进行了归纳总结,希望能够完整呈现专辑成果对新型电力系统数字化关键技术体系的支撑作用,为相关技术研究的进一步深化提供参考。

关键词：新型电力系统数字化边缘计算人工智能信息安全信息物理社会系统

Controlled islanding schemes for interconnected power systems based on coherent generator group identification and wide-area measurements

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Journal of Modern Power Systems and Clean Energy 2016年第3期4卷 440-453页

作者： Zhenzhi LIN fushuan wen Junhua ZHAO Yusheng XUE School of Electrical Engineering Zhejiang UniversityHangzhou 310027China Department of Electrical&Electronic Engineering Universiti Teknologi BruneiBandar Seri Begawan 1410Brunei School of Science and Engineering Chinese University of Hong Kong(Shenzhen)Shenzhen 518172China State Grid Electric Power Research Institute Nanjing 211106China

A reasonable islanding strategy of a power system is the final resort for preventing a cascading failure and/or a large-area blackout from occurrence. In recent years, the applications of wide area measurement systems(WAMS) in emergency control of power systems are increasing. Therefore, a new WAMS-based controlled islanding scheme for interconnected power systems is proposed. First, four similarity indexes associated with the trajectories of generators are defined, and the weights of these four indexes are determined by using the well-developed entropy theory. Then, a coherency identification algorithm based on hierarchical clustering is presented to determine the coherent groups of ***, an optimization model for determining controlled islanding schemes based on the coherent groups of generators is developed to seek the optimal cutset. Finally, a 16-generator68-bus power system and a reduced WECC 29-unit 179-bus power system are employed to demonstrate the proposed WAMS-based controlled islanding schemes, and comparisons with existing slow coherency based controlled islanding strategies are also carried out.

关键词： Wide area measurement system Coherent generators Controlled islanding Trajectory clustering algorithm Entropy weight

Risk-based security-constrained economic dispatch in power systems

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Journal of Modern Power Systems and Clean Energy 2013年第2期1卷 142-149页

作者： Qin WANG Aimin YANG fushuan wen Jihong LI Iowa State University AmesIA 50011-2151USA A.YANGSouth China University of TechnologyGuangzhou 510640China Zhejiang University Hangzhou 310027China Zhejiang Electric Power Corporation Hangzhou 310007China

Based on a new perspective in coordinating with the traditional"N-1"criteria and system risk,a real-time electricity market model is presented,in which the system risk is employed to model the system’s overall security *** new model is called the risk-based security-constrained economic dispatch(RB-SCED).Relative to the securityconstrained economic dispatch(SCED)used in the power industry today,the RB-SCED finds more secure and economic operating *** does this by obtaining solutions that achieve a better balance between post-contingency flows on individual branches and the overall system *** method exploits the fact that,in a SCED solution,some postcontingency branch flows which exceed their limits impose little risk while other post-contingency branch flows which are within their limits impose significant *** RB-SCED softens constraints for the former and hardens constraints for the latter,thus achieving simultaneous improvement in both security and *** this work,the basic concept and the mathematical formulation of the RB-SCED model are systematically *** results on a 9-bus system and the ISO New England actual system have demonstrated the advantages of RB-SCED over SCED.

关键词： Economic dispatch Security-constrained economic dispatch(SCED) Risk-based securityconstrained economic dispatch(RB-SCED) Contingency Power system