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Optimization Model for Inter-regional Emergency Power Dispatch co.sidering Transmission Rights Allocation

Dianwang Jishu/Power System technology 2025年第1期49卷 223-231页

作者： Guan, Jinyu Liang, Zhifeng Chang, Li Cao, Rongzhang Li, Lili nari Group co.poration State Grid Electric Power Research Institute Jiangsu Province Nanjing 211106 China nari technology co. Ltd. Jiangsu Province Nanjing 211106 China Department of Electrical Engineering Tsinghua University Haidian District Beijing 100084 China National Power Dispatch and co.trol Centre Xicheng District Beijing 100031 China

Inter-regional emergency power dispatch refers to the mandatory fallback guarantee measures for ensuring supply or absorption of emergency demands within provincial grids when market-based approaches have been exhausted from the perspective of mutual assistance in electricity surplus and shortage across provinces and regions. When it is impossible to rely on market declarations directly, how to allocate emergency demands and inter-provincial/regional support capacities and distribute the limited available transfer capacity reasonably among market entities is one of the key issues urgently needing to be addressed in current emergency dispatch. This paper proposes an optimization model for inter-provincial and inter-regional emergency power dispatch co.sidering transmission rights. Inspired by China's current mechanism for allocating transmission channel revenue rights, based on local prioritization and the urgency of emergency demands, a method for determining the priority of emergency transactions co.sidering transmission rights allocation is proposed. This method transforms transmission rights into priority transaction rights, addressing the lack of a reasonable basis for transmission capacity allocation in the emergency dispatch phase. co.sidering co.straints such as available transfer capacity, transaction flow balance, and transaction point power balance co.straints, to maximize adjusted social welfare, a clearing model for emergency dispatch optimization co.sidering transaction path priority is co.structed. co.parative analysis of the optimization results of three 1e clearing modes, price-based sequential clearing, scenario-based separation, and clearing with transaction path priority, validates the effectiveness and superiority of the proposed optimization clearing model and analyzes the impact of related parameter settings on the clearing results. © 2025 Power System technology Press. All rights reserved.

关键词： co.merce

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Learning Label co.relations for Multi-Label Online Passive Aggressive Classification Algorithm

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Wuhan University Journal of Natural Sciences 2024年第1期29卷 51-58页

作者： ZHANG Yongwei nanjing nari intelligent transport technology co. Ltd.Nanjing 210061JiangsuChina

Label co.relations are an essential technique for data mining that solves the possible co.relation problem between different labels in multi-label *** this technique is widely used in multi-label classification problems,batch learning deals with most issues,which co.sumes a lot of time and space *** traditional batch learning methods,online learning represents a promising family of efficient and scalable machine learning algorithms for large-scale ***,existing online learning research has done little to co.sider co.relations between *** the basis of existing research,this paper proposes a multi-label online learning algorithm based on label co.relations by maximizing the interval between related labels and unrelated labels in multi-label *** evaluate the performance of the proposed algorithm on several public *** show the effectiveness of our algorithm.

关键词： label co.relations passive aggressive multi-label classification online learning

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An Image Fingerprint and Attention Mechanism Based Load Estimation Algorithm for Electric Power System

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co.puter Modeling in Engineering & Sciences 2024年第7期140卷 577-591页

作者： Qing Zhu Linlin Gu Huijie Lin Electricity technology Branch Nari Technology Co.Ltd.Nanjing211106China nari-TECH nanjing co.trol Systems co. Ltd.Nanjing211106China

With the rapid development of electric power systems,load estimation plays an important role in system operation and ***,load estimation techniques co.tain traditional,time series,regression analysis-based,and machine learning-based *** the machine learning-based method can lead to better performance,in this paper,a deep learning-based load estimation algorithm using image fingerprint and attention mechanism is ***,an image fingerprint co.struction is proposed for training *** the data preprocessing,the training data matrix is co.structed by the cyclic shift and cubic spline ***,the linear mapping and the gray-co.or transformation method are proposed to form the co.or image ***,a co.volutional neural network(CNN)co.bined with an attentionmechanism is proposed for training performance *** last,an experiment is carried out to evaluate the estimation *** with the support vector machine method,CNN method and long short-term memory method,the proposed algorithm has the best load estimation performance.

关键词： Load estimation deep learning attention mechanism image fingerprint co.struction

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Improved thermal design methodology for wind power co.verters

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Journal of Modern Power Systems and Clean Energy 2013年第3期1卷 285-291页

作者： Fei YANG Liang GUO nari technology Development co. Ltd.Nanjing 210061China

This paper presents an improved thermal design methodology for wind power *** co.bines analysis and experimental thermal design tools,including heat transfer co.relations,flow network modeling(FNM),co.putational fluid dynamics(CFD),and experimental measurement ***,a systemic product development process is introduced and an effective co.bination between the product development process and the thermal design methodology is *** draft CFD modeling at the initial design stage is ***,it uses the detailed CFD modeling and experimental measurement techniques to provide a higher degree of accuracy at latter design *** key advantage of the improved methodology is its emphasis on the use of varied design tools,each of which is actively applied at its optimal point in the proposed product development ***,during the earlier stages of the product development process,the thermal risk is systematically reduced,and longterm reliability of products is maintained in a higher degree.

关键词： Flow network modeling(FNM) co.putational fluid dynamics(CFD) Prototype Simulation Experimental measurement

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Mechanism Design for Ancillary Service Market co.sidering Social Welfare and Fairness

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CSEE Journal of Power and Energy Systems 2024年第3期10卷 1000-1010页

作者： Zhi Wu Yuanxi Wu Wei Gu Zheng Xu Shu Zheng Jingtao Zhao School of Electrical Engineering Southeast UniversityNanjing 210096China nari technology co. Ltd.Nanjing 211106China IEEE CSEE

Increasing penetration of distributed energy resources in the distribution network(DN)is threatening safe operation of the DN,which necessitates setup of the ancillary service market in the *** the ancillary service market,distribution system operator(DSO)is responsible for safety of the DN by procuring available capacities of *** existing studies,this paper proposes a novel market mechanism co.posed of two parts:choice rule and payment *** proposed choice rule simultaneously co.siders social welfare and fairness,enco.raging risk-averse aggregators to participate in the ancillary service *** is then formulated as a linear programming problem,and a distributed solution using the multi-cut Benders deco.position is ***,successful implementation of the choice rule depends on each aggregator’s truthful adoption of private ***,a payment rule is also designed,which is proved to possess two properties:incentive co.patibility and individual *** results demonstrate effectiveness of the proposed choice rule on improving fairness and verify properties of the payment rule.

关键词： Aggregator ancillary service market distributed mechanism fairness mechanism design

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A co.bined Method of Temporal co.volutional Mechanism and Wavelet Deco.position for State Estimation of Photovoltaic Power Plants

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co.puters, Materials & co.tinua 2024年第11期81卷 3063-3077页

作者： Shaoxiong Wu Ruoxin Li Xiaofeng Tao Hailong Wu Ping Miao Yang Lu Yanyan Lu Qi Liu Li Pan nari Information&co.munication technology co. Ltd.Nanjing210008China School of Software Nanjing University of Information Science&TechnologyNanjing210044China

Time series prediction has always been an important problem in the field of machine *** them,power load forecasting plays a crucial role in identifying the behavior of photovoltaic power plants and regulating their co.trol *** power load forecasting often has poor feature extraction performance for long time *** this paper,a new deep learning framework Residual Stacked Temporal Long Short-Term Memory(RST-LSTM)is proposed,which co.bines wavelet deco.position and time co.volutional memory network to solve the problem of feature extraction for long *** network framework of RST-LSTM co.sists of two parts:one is a stacked time co.volutional memory unit module for global and local feature extraction,and the other is a residual co.bination optimization module to reduce model ***,this paper demonstrates through various experimental indicators that RST-LSTM achieves significant performance improvements in both overall and local prediction accuracy co.pared to some state-of-the-art baseline methods.

关键词： Times series forecasting long short term memory network(LSTM) time co.volutional network(TCN) wavelet deco.position

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Multi-stage co.planning Model for Power Distribution System and Hydrogen Energy System Under Uncertainties

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Journal of Modern Power Systems and Clean Energy 2023年第1期11卷 80-93页

作者： Qirun Sun Zhi Wu Wei Gu Pengxiang Liu Jingxuan Wang Yuping Lu Shu Zheng Jingtao Zhao School of Electrical Engineering Southeast UniversityNanjing 210096China nari technology Development co.Ltd NanjingChina

The increased deployment of electricity-based hydrogen production strengthens the co.pling of power distribution system(PDS)and hydrogen energy system(HES).co.sidering that power to hydrogen(PtH)has great potential to facilitate the usage of renewable energy sources(RESs),the co.rdination of PDS and HES is important for planning purposes under high RES *** this end,this paper proposes a multi-stage co.planning model for the PDS and *** the PDS,investment decisions on network assets and RES are optimized to supply the growing electric load and *** the HES,capacities of PtHs and hydrogen storages(HSs)are optimally determined to satisfy hydrogen load co.sidering the hydrogen production,tube trailer transportation,and storage *** overall planning problem is formulated as a multistage stochastic optimization model,in which the investment decisions are sequentially made as the uncertainties of electric and hydrogen load growth states are revealed gradually over *** studies validate that the proposed co.planning model can reduce the total planning co.t,promote RES co.sumption,and obtain more flexible decisions under long-term load growth uncertainties.

关键词： Power distribution system vehicle-based hydrogen energy system co.planning model multi-stage stochastic programming uncertainty

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Fully Distributed Eco.omic Dispatch for Cyber-physical Power System with Time Delays and Channel Noises

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Journal of Modern Power Systems and Clean Energy 2022年第6期10卷 1472-1481页

作者： Yuhang Zhang Ming Ni Yonghui Sun co.lege of Energy and Electrical Engineering Hohai UniversityNanjing 210098China nari Group co.poration(State Grid Electric Power Research Institute) Nanjing 211106China nari technology co. Ltd.Nanjing 211106China State Key Laboratory of Smart Grid Protection and co.trol Nanjing 211106China

Eco.omic dispatch problem(EDP)is a fundamental optimization problem in power system operation,which aims at minimizing the total generation *** fact,the power grid is beco.ing a cyber-physical power system(CPPS).Therefore,the quality of co.munication is a key *** this paper,co.sidering two important factors,i.e.,time delays and channel noises,a fully distributed co.sensus based algorithm is proposed for solving *** critical maximum allowable upper bounds of heterogeneous co.munication delays and self-delays are *** should be pointed out that the proposed algorithm can be robust against the time-varying delays and channel noises co.sidering generator *** addition,even with time-varying delays and channel noises,the power balance of supply and demand is not broken during the *** simulation studies are presented to validate the co.rectness and superiority of the developed results.

关键词： Distributed eco.omic dispatch co.sensus-based algorithm cyber-physical power system time delay channel noises

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Cyber-attack-tolerant Frequency co.trol of Power Systems

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Journal of Modern Power Systems and Clean Energy 2021年第2期9卷 307-315页

作者： Chunyu Chen Kaifeng Zhang Ming Ni Ying Wang the School of Electrical and Power Engineering China University of Mining and TechnologyXuzhou 221116China the School of Automation Southeast UniversityNanjing 210096China nari Group co.poration(State Grid Electric Power Research Institute) Nanjing 211106China nari technology co. Ltd.Nanjing 211106China State Key Laboratory of Smart Grid Protection and co.trol Nanjing 211106China

Cyber attacks are emerging threats in the Internet of Things applications,and power systems are typical cyber attack *** one of the most essential operation functions,frequency co.trol is threatened by cyber intrusions,and the existing centralized co.trol mode cannot effectively address cyber *** this study,a new distributed cyber-attack-tolerant frequency co.trol scheme is *** distributed co.trol mode also serves as a co.venient tool for attack *** designed cyber-attack-tolerant frequency co.troller adopts the idea of passive fault attenuation,thus simplifying the design *** the aid of graph theory and co.sensus techniques,distributed integral based and model predictive co.trol(MPC)based co.trollers are *** with the integral type,the MPC-based co.troller can simultaneously improve the dynamic responses and the tolerance ability under *** proposed co.troller is validated via an IEEE benchmark system,and the effectiveness of its application in actual power systems is verified.

关键词： Frequency co.trol cyber attack distributed co.trol passive fault attenuation cyber-attack-tolerant frequency co.trol

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Analysis and discussion of a dead-zone protection mal-operation case in Brazil

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Journal of Modern Power Systems and Clean Energy 2014年第1期2卷 87-91页

作者： Dehui CHEN Yi XIA Wei LIU Salvatore MANTUANO nari technology co. LTDNanjing 210003China State Grid Brazil Holding S.A. Rio de Janeiro 20071-004Brazil

A mal-operation case of busbar protection caused by a dead-zone protection abnormality in the Brazilian Midwest Grid on September 19th,2012,is briefly *** operation process of pilot distance,automatic re-closure,busbar differential and dead-zone protection,and the emphasis on the logic scheme of dead-zone protection are *** time delay between the breaker’s main pole and auxiliary co.tact during re-closure was the main cause in this case,and a defect in the logic allowed it to *** differences in dead-zone protection logic between Brazil and China are discussed.A test platform was co.structed in the laboratory,and a site simulated experiment was also *** causes are suggested and test activities are carried out to verify *** show the values of practical engineering approaches to the *** also co.tributed to avoiding future mal-operations and strengthening the reliability of the protection system,and thus of the power supply in Brazil.

关键词： Brazilian power system Power system Relay protection device Dead-zone protection

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