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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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Standard Analysis for Transfer Delay in CTCS-3

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Chinese Journal of Electronics 2017年第5期26卷 1057-1063页

作者： CAO Yuan MA Lianchuan XIAO Shuo ZHANG Xia XU Wei National Engineering Research Center of Rail Transportation Operation and Control System Beijing Jiaotong University State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University School of Computer Sciences and Technology China University of Mining & Technology National Mobile Communications Research Lab. Southeast University

According to the standard for the GSM for railway(GSM-R) wireless systems in China train control system level 3(CTCS-3),the control data transfer delay should be no larger than 500 ms with greater than99% *** of both non-redundant networks and intercross redundant networks and cases of single Mobile terminals(MTs) and redundant MTs on one train are considered,and the corresponding vehicle-ground communication models,delay models,and fault models are *** simulation results confirm that the transfer delay can meet the standard requirements under all *** particular,the probability is greater than 99.996% for redundant MTs and networks,and the standard of transfer delay in CTCS-3 will be improved inevitably.

关键词： China train control system level 3(CTCS-3) GSM for railway(GSM-R) Data transfer delay Deterministic and stochastic petri net(DSPN)

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Cascaded battery energy storage system based on dual active bridges and a common dc bus

Cascaded battery energy storage system based on dual active ...

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2010 9th International power and Energy Conference, IPEC 2010

作者： Jin, Yiding Song, Qiang Liu, Wenhua Sun, Weixin State Key Lab. of Control and Simulation of Power System and Generation Equipments Tsinghua University Beijing China

ISBN: (纸本)9781424473991

Along with the increasing system capacity, large-scaled energy storage systems are supposed to be connected into 10kV or higher networks. Urban network has strict criterions on power quality of the power electronic devices connected. Moreover, the occupancy and noise of industrial frequency transformers also become restraints to the promotion of urban network energy storage. For that reason, this paper proposes a battery energy storage system based on cascaded dc-ac converter, dual active bridges, and a common dc bus. High frequency transformers are used to replace the industrial frequency transformer for insulation, and battery groups are connected to the common dc bus with respective dc-dc interfaces. This multilevel converter system is easy to modularize, easy to extend, and allows different kinds of batteries to work together. The main circuit and proper control system are designed, with the soft-switching condition and current control issues of the dual active bridge analyzed in detail. The simulation results from EMTDC model verify the operation principles and corresponding control strategies. ©2010 IEEE.

关键词： Electric inverters

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Harmonic Current Detection and Reactive power Compensation Method for Photovoltaic system Based on FBD Method 3

Harmonic Current Detection and Reactive Power Compensation M...

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3rd IEEE Conference on Energy Internet and Energy system Integration, EI2 2019

作者： Liu, Lifeng Xie, Dong Zhao, Duo Jia, Yanbing Yu, Yongjun Fan, Qiang Shen, Yong Qi, Weiwen State Grid Shaoxing Power Supply Company Shaoxing China Taiyuan University of Technology Shanxi Key Lab. of Power System Operation and Control Taiyuan China Shaoxing Jianyuan Power Group Co. Ltd Shaoxing China

ISBN: (纸本)9781728131375

In order to improve the equipment utilization of distributed photovoltaic power generation system, the harmonic and reactive currents generated by grid-connected photovoltaic system can be accurately detected and compensated. A phase-locked loop based on second-order generalized integrator (SOGI-PLL) is introduced into the traditional FBD current detection method to separate the positive and negative sequence components of unbalanced voltage and detect the phase and frequency of reference voltage more accurately. The simulation results show that the algorithm can reduce the computational complexity and increase the detection accuracy and steady-state performance. © 2019 IEEE.

关键词： Phase locked loops

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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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Summary of Energy Storage systems and Renewable Energy Participation in AGC Research 3

Summary of Energy Storage Systems and Renewable Energy Parti...

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3rd IEEE Conference on Energy Internet and Energy system Integration, EI2 2019

作者： Yang, Caiming Tao, Hongfei Song, Xinrui Jia, Yanbing Xie, Dong Qi, Weiwen Yu, Yongjun Zhao, Feng State Grid Shaoxing Power Supply Company Shaoxing China Shaoxing Jianyuan Power Group Co. Ltd. Shaoxing China Taiyuan University of Technology Shanxi Key Lab. of Power System Operation and Control Taiyuan China

ISBN: (纸本)9781728131375

With the scarcity of fossil energy, the development of renewable energy is becoming more and more rapid. However, when new energy is integrated into the power grid, the inertia of the system is reduced and the stability of the system is lowered. This also poses a new challenge to frequency control, and energy storage as a technology that can quickly respond to system frequency changes is now widely concerned. This paper summarizes the domestic and international research status of energy storage and AGG capacity allocation and coordinated control through the influence of renewable energy on AGC. Finally, the development prospects of energy storage and participation in new energy integration into the power grid are prospected. © 2019 IEEE.

关键词： Energy storage

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An optimized multi-modular resonant switched capacitor converter 4

An optimized multi-modular resonant switched capacitor conve...

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2022 4th International Conference on Energy, power and Grid, ICEPG 2022

作者： Li, Ruishu Chang, Xiao Han, Xiaoqing He, Xin Guo, Zhuoyan Meng, Runquan Shanxi Key Lab of Power System Operation and Control Taiyuan University of Technology Taiyuan China Electric Power Research Institute State Grid Shanxi Electric Power Company Taiyuan China

The switched capacitor converters have the advantages of high efficiency and high power density, which are widely used in data centers, distributed photovoltaic power generation, and other fields. In this paper, an optimized multi-modular resonant switched capacitor converter (MMRSCC) is proposed for an intermediate bus converter in the power supply system of data centers. By removing the inductance of part of the coupled resonant circuit, the converter can eliminate the influence of the parameter difference of passive components, and no additional voltage clamp circuit is needed, which improves the power density. At the same time, the half-bridge with the same switching action on the rectifier side is combined into one, which reduces the number of switching devices and is more conducive to improving the voltage conversion efficiency. In addition, the inductor of the basic unit of the resonant switched capacitor with the same state is shared to reduce the volume of the passive device, further improve the power density, and optimize the MMRSCC. Finally, the correctness of the topology is verified by simulation on the PLECS. © Published under licence by IOP Publishing Ltd.

关键词： Conversion efficiency

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Series-Connected SiC MOSFETs Module with a Single Gate Driver 6

Series-Connected SiC MOSFETs Module with a Single Gate Drive...

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6th IEEE Conference on Energy Internet and Energy system Integration, EI2 2022

作者： Zhang, Yuxuan Li, Rui Meng, Runquan Ren, Yuhan Ma, Yue Chen, Juan Taiyuan University of Technology Shanxi Key Lab of Power System Operation and Control Taiyuan China Electric Power Research Institute of State Grid Shanxi Electric Power Company Taiyuan China

ISBN: (纸本)9798350347159

With the continuous development and progress of power electronics technology, the technological innovation of each generation of power semiconductors will have a profound impact on the generation, transmission, conversion and distribution of electrical energy, and has made outstanding contributions to the advancement of human civilization and economic and social development. In recent years, a new generation of wide-bandgap semiconductor power devices has developed vigorously, and new material switching devices such as SiC and GaN MOSFET have entered people's field of vision, which has brought new historical opportunities for the performance improvement of power electronic equipment, as well as new challenges. This paper presents a series-connected SiC MOSFET switching module topology with a single gate driver. Then, the working principle including static state and switching transition is analyzed. The LTspice simulations in the third section validate the analysis and show the usability of the series-connected SiC MOSFET stack topology using a single gate driver. © 2022 IEEE.

关键词： Topology

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Low-carbon Economic Dispatch of Integrated Energy system Considering Hydrogen Mixing in Natural Gas Pipeline 5

Low-carbon Economic Dispatch of Integrated Energy System Con...

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

作者： Xie, Dong Kang, Lihong Jia, Yanbing Chen, Hao Tian, Feng Bai, Yun Zhang, Baifu Cui, Xuan State Grid Shaoxing Power Supply Company Shaoxing China 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

ISBN: (纸本)9781665434256

With the rapid growth of the penetration rate of renewable energy, the construction of Integrated electricity-natural gas system (IEGS) has important economic and environmental significance. power-to-gas (P2G) technology, as a new energy conversion and storage method, provides an important way for wind power consumption. Due to the limited local consumption of hydrogen energy and difficulty in exporting, this paper proposes an IEGS optimal scheduling model that considers hydrogen mixing in natural gas pipeline and aims at the lowest system operating cost. After the verification of the improved IEEE 14-node power network and the Belgian 20-node natural gas network coupling system, the operation mode of the IEGS proposed in this paper can expand the hydrogen demand, increase the hydrogen transmission capacity, and promote wind power consumption. At the same time, it can achieve carbon emission reduction and improve the economics of system operation. © 2021 IEEE

关键词： Gases

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