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计及灵活性资源的分布式多微网配电系统定价策略

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电力自动化设备 2024年第8期44卷 116-123页

作者：陈灿鸿谢仕炜张亚超吴秋伟福州大学电气工程与自动化学院福建福州350108 清华大学深圳国际研究生院清华-伯克利深圳学院广东深圳518055

针对含灵活性资源的多微网配电系统,提出一种基于动态非合作博弈的多微网配电系统定价策略,以引导用户侧调整用电方式实现系统经济运行。提出一种双层不动点映射算法:在内层,分别建立微网和配电网的凸优化模型,采用交替方向乘子法对模... 详细信息

针对含灵活性资源的多微网配电系统,提出一种基于动态非合作博弈的多微网配电系统定价策略,以引导用户侧调整用电方式实现系统经济运行。提出一种双层不动点映射算法:在内层,分别建立微网和配电网的凸优化模型,采用交替方向乘子法对模型进行分布式求解,进而确定电网最优定价策略;在外层,建立灵活性资源用户响应模型,用户根据内层的定价策略调整原有需求量。引入不动点定理解释该博弈问题,并证明其均衡解的存在性、唯一性和收敛性。算例仿真结果验证了所提策略的适用性与有效性。

关键词：灵活性资源定价策略分布式优化不动点定理多微网

基于模型预测控制的风储联合电场参与电网二次调频策略

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上海交通大学学报 2024年第1期58卷 91-101页

作者：刘传斌矫文书吴秋伟陈健周前山东大学电气工程学院济南250061 清华大学清华伯克利深圳学院清华深圳国际研究生院广东深圳518055 国网江苏省电力有限公司电力科学研究院南京211100

随着风力发电在电网中渗透率不断增加,需要风储联合电场参与电网调频服务,维持电网的频率稳定.针对中高风速下的风储联合电场,通过分析风力发电机的机械特性和储能系统的运行特性,确定了减载运行方式下风力发电机桨距角的控制方式,提出... 详细信息

随着风力发电在电网中渗透率不断增加,需要风储联合电场参与电网调频服务,维持电网的频率稳定.针对中高风速下的风储联合电场,通过分析风力发电机的机械特性和储能系统的运行特性,确定了减载运行方式下风力发电机桨距角的控制方式,提出一种基于模型预测控制的风储联合电场参与电网二次调频的控制策略.建立风电场桨距角控制的预测模型和电化学储能系统的预测模型,优化风力发电机和储能系统的有功功率输出,在调频基础上更好地减少了风能损失.根据上级系统的有功功率指令值和风力发电机实际输出功率之间的差值对桨距角控制进行进一步修正,使得风力发电机在二次调频期间能够更好地追踪到上级系统的功率指令值,迅速响应频率变化值,减小动态频率偏差,完成二次调频任务.仿真结果表明,该控制策略综合考虑了风力发电机可控的二次调频能力和电化学储能系统响应快速、跟踪精确的特性,使风储联合电场能够主动响应系统频率的变化,更好地跟踪上级系统下发的有功功率指令值,参与电网二次调频.

关键词：风储联合电场模型预测控制桨距角控制电化学储能系统二次调频有功功率追踪

ADMM-based Distributed Active and Reactive Power Control for Regional AC Power Grid with Wind Farms

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Journal of Modern Power Systems and Clean Energy 2022年第3期10卷 588-596页

作者： Pengda Wang qiuwei wu Sheng Huang Canbing Li Bin Zhou Center for Electric Power and Energy(CEE) Department of Electrical EngineeringTechnical University of Denmark(DTU)Kgs.Lyngby 2800Denmark School of Electronic Information and Electrical Engineering Shanghai Jiao Tong UniversityShanghai 200240China College of Electrical and Information Engineering Hunan UniversityChangsha 410082China

A distributed active and reactive power control(DARPC)strategy based on the alternating direction method of multipliers(ADMM)is proposed for regional AC transmission system(TS)with wind farms(WFs).The proposed DARPC strategy optimizes the power distribution among the WFs to minimize the power losses of the AC TS while tracking the active power reference from the transmission system operator(TSO),and minimizes the voltage deviation of the buses inside the WF from the rated voltage as well as the power losses of the WF collection *** optimal power flow(OPF)of the TS is relaxed by using the semidefinite programming(SDP)relaxation while the branch flow model is used to model the WF collection *** the DARPC strategy,the large-scale strongly-coupled optimization problem is decomposed by using the ADMM,which is solved in the regional TS controller and WF controllers in parallel without loss of the global *** boundary information is exchanged between the regional TS controller and WF *** with the conventional OPF method of the TS with WFs,the optimality and accuracy of the system operation can be ***,the proposed strategy efficiently reduces the computation burden of the TS controller and eliminates the need of a central *** protection of the information privacy can be enhanced.A modified IEEE 9-bus system with two WFs consisting of 64 wind turbines(WTs)is used to validate the proposed DARPC strategy.

关键词： Alternating direction method of multipliers(ADMM) distributed active and reactive power control(DARPC) optimal power flow(OPF) semidefinite programming(SDP) wind farm

Model Predictive Control Based Coordinated Voltage Control for Offshore Radial DC-connected Wind Farms

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Journal of Modern Power Systems and Clean Energy 2023年第1期11卷 280-289页

作者： wu Liao qiuwei wu Hesong Cui Sheng Huang Yusheng Gong Bin Zhou College of Electrical and Information Engineering Hunan UniversityChangshaChina Electrical Technology and Economics of Machinery Industry Institute of Beijing BeijingChina Department of Electrical Engineering Technical University of DenmarkLyngbyDenmark Electric Power Research Institute State Grid Hunan Electric Power Co.Ltd.ChangshaChina

In this study,a coordinated voltage control strategy based on model predictive control(MPC)is proposed for offshore radial DC-connected wind *** control modes are designed in this *** the economic operation mode,the wind farm controller generates optimal active power references as well as bus voltage references of medium-voltage collector for DC-connected wind turbine(DCWT)systems and high-voltage DC/DC converters,where the goal is to minimize power losses inside the wind farm and ensure that voltages are within a feasible range,all while tracking the power *** the voltage control mode,the main control objective for the wind farm controller is to minimize voltage deviations from the rated *** the MPC,the control objective and operation constraints can be explicitly represented in the optimization problem while considering the dynamic response of the DCWT *** addition,a sensitivity coefficient calculation method for radial DC-connected wind farms is developed to improve computational ***,DC-connected wind farms with 20 wind turbines are used to demonstrate the performance of the proposed strategy.

关键词： Wind farm DC/DC converter model predictive control(MPC) voltage control

Heat Pumps in Denmark:Current Situation in Providing Frequency Control Ancillary Services

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CSEE Journal of Power and Energy Systems 2022年第3期8卷 769-779页

作者： Menglin Zhang qiuwei wu Theis Bo Harild Rasmussen Xiaodong Yang Jinyu Wen Department of Electrical Engineering Centre for Electric Power and EnergyTechnical University of DenmarkKgs.LyngbyDenmark State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and TechnologyWuhan 430074China

-The Danish government set an ambitious goal to achieve a fully renewable-based energy system by *** this context,the integrated electricity and heating system is undergoing rapid development in Denmark as a promising way to accommodate the ever-growing renewable energy sources(RESs).The electric heat pumps(HPs),coupled with the power and heat sectors,can propagate the flexibility on the heat consumer side to the power system operations,playing an important role of improving system flexibility and balancing the variability of the *** this paper,the current development situation of HPs in Denmark is analyzed,including both the large-scale HPs in the district heating system and individual HPs on the residential *** possibility of using HPs to provide frequency control ancillary service(FCAS)is analyzed according to the market and technical requirements of the FCAS in the Danish transmission system and experimental results of representative demonstration projects of HPs.A comprehensive analysis of the advantages,barriers,future prospects,and challenges for using HPs to provide the FCAS are carried out from the perspectives of different entities.

关键词： Danish energy system frequency control ancillary service individual heat pumps integrated electricity and heat system large-scale heat pumps power to heat

Optimal Operation of Flexible Distribution Networks for Security Improvement Considering Active Management

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CSEE Journal of Power and Energy Systems 2023年第3期9卷 996-1007页

作者： Jia Liu Pingliang Zeng Hao Xing Yalou Li qiuwei wu Department of Automation Hangzhou Dianzi UniversityHangzhou 310018China Department of Electrical Engineering Zhejiang UniversityHangzhou 310027China China Electric Power Research Institute Beijing 100192China Department of Electrical Engineering Technical University of DenmarkKongens Lyngby 2800Denmark

This paper presents a stochastic optimal operation problem of gas turbine integrated distribution networks in the presence of active management schemes,which is formulated as a multi-objective chance-constrained mixed integer nonlinear programming *** control variables are the on-load tap-changer tap position,the power provided by the distributed generation(DG),the DG power factor angle,the load participating in demand side management and the switch *** objectives defined in this paper are to simultaneously minimize the expectation cost and variation coefficient of security *** related to DG output and load fluctuation and fault power restoration under contingencies are also considered in the optimization *** collaboration of normal boundary intersection and the dynamic niche differential evolution algorithm is proposed to handle the optimal operation *** results are presented and demonstrate the effectiveness of the proposed *** with the operation result without the consideration of security,the security-constrained operation can reduce the expectation ***,the proposed optimization is reasonable and valuable.

关键词： Active management flexible distribution networks optimal operation security improvement uncertainties

Distributionally Robust Transmission Expansion Planning Considering Uncertainty of Contingency Probability

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Journal of Modern Power Systems and Clean Energy 2022年第4期10卷 894-901页

作者： Weilun Wang Mingqiang Wang Xueshan Han Ming Yang qiuwei wu Ran Li Key Laboratory of Power System Intelligent Dispatch and Control Ministry of EducationShandong UniversityJinan 250002China Department of Electrical Engineering Technical University of DenmarkRegion HovedstadenDenmark

The outage of power system equipment is one of the most important factors that affect the reliability and economy of power *** is crucial to consider the influence of contingencies elaborately in planning *** this paper,a distributionally robust transmission expansion planning model is proposed in which the uncertainty of contingency probability is *** uncertainty of contingency probability is described by uncertainty interval based on the outage rate of single *** epigraph reformulation and Benders decomposition are applied to solve the proposed ***,the feasibility and effectiveness of the proposed model are illustrated on the IEEE RTS system and the IEEE 118-bus system.

关键词： Benders decomposition distributionally robust equipment outage rate transmission expansion planning

Bi-level Energy Trading Model Incorporating Large-scale Biogas Plant and Demand Response Aggregator

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Journal of Modern Power Systems and Clean Energy 2023年第2期11卷 567-578页

作者： Hanyu Yang Canbing Li Ruanming Huang Feng Wang Lili Hao qiuwei wu Long Zhou College of Electrical Engineering and Control Science Nanjing Tech UniversityNanjingChina School of Electronic Information and Electrical Engineering Shanghai Jiao Tong UniversityShanghai 200240China Economic and Technological Research Institute of Shanghai Electric Power Company ShanghaiChina College of Electrical and Information Engineering Hunan UniversityChangsha 410082China Tsinghua-Berkeley Shenzhen Institute Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Information Center of Guangdong Power Grid Company Limited Guangzhou 528000China

Increasing intermittent renewable energy sources(RESs)intensifies the imbalance between demand and generation,entailing the diversification of the deployment of electrical energy storage systems(ESSs).A large-scale biogas plant(LBP)installed with heating devices and biogas energy storage(BES)usually exhibits a storage-like characteristic of accommodating an increasing penetration level of RES in rural areas,which is addressed in this *** utilizing the temperature-sensitive characteristic of anaerobic digestion that enables the LBP to exhibit a storage-like characteristic,this paper proposes a bi-level energy trading model incorporating LBP and demand response aggregator(DRA)*** this model,social welfare is maximized at the upper level while the profit of DRA is maximized at the lower *** with cases only with DRA,the results show that the proposed model with the LBP improves the on-site accommodation capacity of photovoltaic(PV)generation up to 6.3%,18.1%,and 18.9%at 30%,40%,and 50%PV penetration levels,respectively,with a better economic *** nonlinear bi-level problem is finally recast by a single-level mathematical program with equilibrium constraints(MPEC)using Karush-Kuhn-Tucker(KKT)conditions and solved by the Cplex *** effectiveness of the proposed model is validated using a 33-bus test system and a sensitivity analysis is provided for analyzing what parameter influences the accommodation capacity most.

关键词： Biomass energy renewable energy resource energy trading demand response distribution system

Review of Service Restoration for Distribution Networks

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Journal of Modern Power Systems and Clean Energy 2020年第1期8卷 1-14页

作者： Feifan Shen qiuwei wu Yusheng Xue Center for Electric Power and Energy Department of Electrical EngineeringTechnical University of DenmarkLyngbyDenmark State Grid Electric Power Research Institute NanjingChina

With the rapid deployment of the advanced metering infrastructure(AMI)and distribution automation(DA),selfhealing has become a key factor to enhance the resilience of distribution *** a permanent fault occurrence,the distribution network operator(DNO)implements the selfhealing scheme to locate and isolate the fault and to restore power supply to out-of-service *** an essential component of self-healing,service restoration has attracted considerable *** paper mainly reviews the service restoration approaches of distribution networks,which requires communication *** service restoration approaches can be classified as centralized,distributed,and hierarchical approaches according to the communication *** these approaches,different techniques are used to obtain service restoration solutions,including heuristic rules,expert systems,metaheuristic algorithms,graph theory,mathematical programming,and multi-agent ***,future research areas of service restoration for distribution networks are discussed.

关键词： Distribution networks fault detection fault isolation service restoration self-healing scheme