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3rd IEEE International Conference on power, Electronics and Computer Applications, ICPECA 2023

作者： Ding, Ran Sun, Rongfu Geng, Yan Yao, Yiming Zhao, Ergang Xu, Lina State Grid Jibei Electric Power Company Limited Beijing China Tsinghua University State Key Lab. of Control and Simulation of Power System and Generation Equipment Dept. of Electrical Engineering Beijing China

ISBN: (纸本)9781665472784

The interaction between various energy supply systems (cold, heat, electricity, gas, etc.) is becoming more tightly coupled as social economy and technology advance. Multi-energy systems are ineffective because different types of energy systems run independently. In order to protect the data privacy of each sub-system, this research suggests an ideal resource management framework for a multi-energy group control system. The energy hub (EH) paradigm is first suggested. When deploying EHs, the physical constraints of various energy systems are taken into account. Through scenario-based stochastic programming, the uncertainties of renewable energy are considered. According to the leader-follower relationship between multi-energy group control system operators and energy hub operators (EHOs), Benders decomposition is applied to decentralize the decision-making process. Finally, an example is given to illustrate the effectiveness of the proposed model and algorithm. © 2023 IEEE.

关键词： Data privacy

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Study of improved active-clamped phase shift full bridge converter

Study of improved active-clamped phase shift full bridge con...

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Electrical Engineering and control Science (IC2ECS), International Conference on

作者： Xin He Runquan Meng Ruishu Li Shanxi Key Lab of Power System Operation and Control Taiyuan University of Technology Taiyuan China

Aiming at the drawbacks of the conventional phase-shifted full-bridge topology in terms of high voltage stress in the synchronous rectifier switches and high switching loss of the primary-side switch under low load conditions, a phase-shifted full-bridge circuit with improved control of an active clamp circuit is proposed. The converter utilizes the resonance of the switch parasitic capacitance with the primary-side resonant inductor to achieve ZVS (Zero- Voltage-Switch) under light load, and effectively improves the efficiency under heavy load by zeroing the primary-side current in the circulating current stage. In this paper, the topology, operating principle and operating characteristics of the proposed scheme are described in detail, and the feasibility of the scheme is verified by simulation in PLECS platform.

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Energy storage system participates in frequency modulation control and capacity balance strategy of power system 5

Energy storage system participates in frequency modulation c...

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5th IEEE International Electrical and Energy Conference, CIEEC 2022

作者： Wang, Zhenyang Zhai, Wenchao Yan, Gangui Zhao, Yue Cui, Youshi Jia, Xihao Northeast Electric Power University Dept. Min. of Educ. Key Lab. of Modern Power System Simulation Control and Green Power Technology Jilin China

ISBN: (数字)9781665411042

ISBN: (纸本)9781665411042

The grid-connected wind power generation leads to frequent frequency safety problems in the system, and new primary frequency modulation measures are urgently needed. In order to ensure the economy and safety of power grid operation, it is necessary to conFigure energy storage system for wind farm. In this paper, the control strategy is designed to use energy storage for primary frequency modulation. At present, the SOC imbalance of internal battery components is common in energy storage batteries. Therefore, this paper proposes an adjustable capacity proportional equalization control algorithm based on the current capacity of energy storage batteries. According to the different SOC of each battery component of energy storage batteries and its operating state (charge and discharge), it determines how to reasonably distribute the power deviation signal generated by frequency modulation to each energy storage battery component, so that the energy storage battery can not only support the frequency adjustment of power grid, but also improve its own SOC imbalance. Finally, based on EMTDC/PSCAD simulation model, the effectiveness of this method is verified. Simulation results show that this method can effectively balance the system SOC. © 2022 IEEE.

关键词： Frequency modulation

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Performance-Aware control of Modular Batteries For Fast Frequency Response

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IEEE Transactions on Sustainable Energy 2025年

作者： He, Yutong Ruan, Guangchun Zhong, Haiwang Tsinghua University State Key Laboratory of Power System Operation and Control Department of Electrical Engineering Beijing100084 China Massachusetts Institute of Technology Lab for Information and Decision Systems CambridgeMA02139 United States

Modular batteries can be aggregated to deliver frequency regulation services for power grids. Although utilizing the idle capacity of battery modules is financially attractive, it remains challenging to consider the heterogeneous module-level characteristics such as dynamic operational efficiencies and battery degradation. In addition, real-time decision making within seconds is required to enable fast frequency response. In order to address these issues, this paper proposes a performance-aware scheduling approach for battery modules to deliver fast frequency response (FFR) support. In particular, the conduction loss and switching loss of battery packs as well as converters are captured within a mix-integer quadratic constrained program (MIQCP). The cycle-based aging model identifies the aging cost of battery modules during frequent cycling by introducing the aging subgradient calculation and linearization. Case studies based on real-world battery data show that the proposed scheduling approach can effectively reduce power loss cost by nearly 28%-57% and battery aging cost by 4%-15% compared to conventional methods, which can also enhance the SoC balance. © 2010-2012 IEEE.

关键词： Battery management systems

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Comprehensive Evaluation of AC-DC Distribution Network in Photovoltaic-Energy Storage Charging Station Based on AHP-TOPSIS Method 5

Comprehensive Evaluation of AC-DC Distribution Network in Ph...

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5th IEEE Conference on Energy Internet and Energy system Integration, EI2 2021

作者： Zhang, Xinfang Li, Hao Wang, Lei Liu, Yizhao Wang, Fangda Shanxi Key Lab. of Power System Operation and Control Taiyuan University of Technology Taiyuan China Hebei Gas Co. Ltd Taiyuan China Electric Power Research Institute Taiyuan China

ISBN: (纸本)9781665434256

Increasing studies have shown that DC distributi on will contribute substantially to future photovoltaic-energy st orage charging station (PV-ES CS) owing to the high efficiency and play an important role in distribution networks. It is neces sary to comprehensively compare low voltage DC (LVDC) with AC (LVAC) distribution networks for planning and design of PV-ES CS. This paper presents a comprehensive evaluation mo del of the distribution system based on AHP-TOPSIS theory. T he evaluation index system, including reliability, economy and adaptability, is proposed based on the difference of AC and DC distribution network structure and performance. The propose d approach integrates ideal solution (TOPSIS) and Analytic hie rarchy process (AHP) to determine the weights. Finally, the re suits obtained from the case studies have demonstrated the rati onality and feasibility of proposed evaluation model. It is instru ctive to the application and popularization of DC PV-ES CS. © 2021 IEEE

关键词： Energy storage

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Two-Stage OD Flow Prediction for Emergency in Urban Rail Transit

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IEEE Transactions on Intelligent Transportation systems 2024年第1期25卷 920-928页

作者： Zhu, Guangyu Ding, Jiacun Wei, Yun Yi, Yang Xu, Sendren Sheng-Dong Wu, Edmond Q. Beijing Jiaotong University Key Lab. of Transport Industry of Big Data Application Technologies for Comprehensive Transport The Beijing Research Center of Urban Traffic Information Sensing and Service Technologies Beijing100044 China Beijing Mass Transit Railway Operation Corporation Ltd. Beijing100014 China Yangzhou University College of Information Engineering Yangzhou225127 China National Taiwan University of Science and Technology Automation and Control Center The Graduate Institute of Automation and Control Taipei106335 Taiwan Shanghai Jiao Tong University Key Laboratory of System Control and Information Processing Ministry of Education of China The Shanghai Engineering Research Center of Intelligent Control and Management Department of Automation Shanghai200240 China

Urban rail transit (URT) is vulnerable to natural disasters and social emergencies including fire, storm and epidemic (such as COVID-19), and real-time origin-destination (OD) flow prediction provides URT operators with important information to ensure the safety of URT system. However, hindered by the high dimensionality of OD flow and the lack of supportive information reflecting the real-time passenger flow changes, study in this area is at the beginning stage. A novel model consisting of two stages is proposed for OD flow prediction. The first stage predicts the inflows of all stations by Long Short-Term Memory (LSTM) in real time, where the dimension is reduced compared with predicting OD flows directly. In the second stage, the notion of separation rate, namely, the proportion of inbound passengers bounding for another station, is estimated. Finally, The OD flow is predicted by multiplying the inflow and separation rate. Experiments based on Hangzhou Metro dataset show the proposed model outperforms the contrast model in weighted mean average error (WMAE) and weighted mean square error (WMSE). Results also suggest that the proposed prediction model performs better on weekdays than on weekends, and with greater accuracy on larger OD flows. © 2000-2011 IEEE.

关键词： Forecasting

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Group equivalent modeling and analysis of group subsynchronous oscillation of direct-drive wind turbine 5

Group equivalent modeling and analysis of group subsynchrono...

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5th IEEE International Electrical and Energy Conference, CIEEC 2022

作者： Dong, Xuetao Zhao, Yue Zhai, Wenchao Wang, Zhenyang Liu, Kan Yan, Gangui Electric Power Research Institute of State Grid Xinjiang Electric Power Co. Ltd. Dept. Xinjiang Electric Power System Whole Process Simulation Key Laboratory Urumqi China Northeast Electric Power University Dept. Min. of Educ. Key Lab. of Modern Power System Simulation Control and Green Power Technology Jilin China

ISBN: (数字)9781665411042

ISBN: (纸本)9781665411042

Taking the direct drive wind farm connected to weak AC system as the research object, combined with the actual topology of a wind farm in Hami, Xinjiang, this paper establishes the detailed model and cluster aggregation model of direct drive wind farm on PSCAD / EMTDC platform, and comprehensively analyzes the effectiveness of aggregation model under sub synchronous oscillation (SSO). The results show that when SSO occurs, the cluster equivalent model can accurately reflect the output characteristics, damping characteristics and oscillation frequency of the wind farm. According to the actual topology of a wind power collection station in Hami, Xinjiang and the actual operation of a wind power collection station on a certain day, the equivalent clustering is carried out. © 2022 IEEE.

关键词： Wind power

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control Strategy of Hybrid Energy Storage in Large-Scale Wind Farm 5

Control Strategy of Hybrid Energy Storage in Large-Scale Win...

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5th IEEE Conference on Energy Internet and Energy system Integration, EI2 2021

作者： Huang, Liang Chen, Hao Jia, Yanbing Tian, Feng Bai, Yun Li, Mengdie Shanxi Key Lab. of Power System Operation and Control Taiyuan University of Technology Taiyuan China State Grid Shanxi Electric Power Company Taiyuan Power Supply Company Taiyuan China Taiyuan University of Technology Taiyuan China

ISBN: (纸本)9781665434256

The large-scale access of renewable energy sources such as wind power will affect the operation and dispatch of the power system, and will affect the safe and stable of the power grid. The ESS has the ability to respond quickly, which can reduce the impact of wind power on the grid. Based on a hybrid energy storage with a certain capacity, a corresponding rolling optimization control strategy is proposed. Using batteries and super capacitor as energy storage media, an optimal control model targeting the state of charge of the hybrid energy storage system is established, and the solution is solved by a particle swarm optimization algorithm. The simulation example shows that a HESS with a certain capacity on the generation side can achieve a smooth grid connection. The control strategy proposed in this paper extends the service life of the battery. © 2021 IEEE

关键词： Particle swarm optimization (PSO)

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Design of BOOST converter based on CN3306 chip 7

Design of BOOST converter based on CN3306 chip

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7th International Conference on Electrical Engineering, control and Robotics, EECR 2021

作者： Linbo, Gan Anfei, Xu Ziqiang, Xi Xiaogang, Du Hubei Key Lab. of Solar Energy Efficient Utilization and Energy Storage System Operation Control Hubei University of Technology Wuhan430068 China

CN3306 is a current mode fixed frequency PWM boost type multiple battery charging management integrated circuit. This article introduces the basic principles and characteristics of CN3306, and designs a boost circuit based on the characteristics of CN3306 chip with stable voltage, small ripple range and low power consumption. Explained in detail how to select peripheral circuit parameters and the practical application of CN3306 in BOOST circuit, and use the PSIM simulation software to build a photovoltaic power generation system model for simulation verification, the result reached the expected value. © Published under licence by IOP Publishing Ltd.

关键词： Low power electronics

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Directional Beamforming for High-Speed Railway Communications with Frequency Offset Precorrection

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Chinese Journal of Electronics 2025年第1期23卷 163-168页

作者： Yuan Cao Yinghong Wen Wei Xu Xin Xie School of Electronics and Information Engineering Beijing Jiaotong University National Engineering Research Center of Rail Transportation Operation and Control System Beijing China State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Beijing China National Mobile Communications Research Lab. Southeast University Nanjing China

This paper considers a multi-antenna transmission strategy for high speed railway communications. In order to achieve better performance than conventional space-frequency block coding schemes, we propose a directional beamforming strategy for the High-speed railway (HSR) communication by exploiting some characteristic of the railway system including predetermined moving tracks and real-time positioning information. Moreover, for alleviating the effect of Doppler shift due to the moving train, a frequency offset precorrection method is also incorporated with direction beamforming. Theoretical Signal-to-noise ratio (SNR) gain of the proposed beamforming scheme over traditional HSR communication schemes is also derived for illustrating the performance enhancement. Numerical results verify the effectiveness of our proposed scheme even with some kind of imperfect position information availab.e at the transmitter.

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