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检索条件"机构=State Key Laboratory of Intelligent Power Grid Protection and Operation Control"

共 564 条记录，以下是71-80 订阅

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Modeling of Doubly Fed Wind power Generation System and Simulation Study on grid-Connection Stability 4

Modeling of Doubly Fed Wind Power Generation System and Simu...

引用

4th International Conference on intelligent power and Systems, ICIPS 2024

作者： Zhang, Jingyue Zhang, Jie Hu, Yufeng Lu, Yuanhong Huang, Libin Zhao, Yanjun Guo, Haiping China Southern Power Grid State Key Laboratory of HVDC Electric Power Research Institute China Southern Power Grid Guangzhou Guangzhou510663 China China Southern Power Grid National Energy Power Grid Technology R & D Centre Guangzhou Guangzhou510663 China China Southern Power Grid Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangzhou Guangzhou510663 China China Southern Power Grid CSG Key Laboratory for Power System Simulation Electric Power Research Institute China Southern Power Grid Guangzhou Guangzhou510663 China National Energy Power Grid Technology R & D Centre Guangzhou Guangzhou510663 China

ISBN: (纸本)9798331532765

Addressing the stability challenges posed by the unpredictability and intermittent nature of wind power output during grid integration, and aiming to enhance the understanding of factors influencing grid stability upon wind power system connection and to implement efficient control measures, a grid- connected model of a doubly fed induction generator (DFIG) was established utilizing a customized version of the RTRES (Real-Time power System Simulation) software, specifically designed for emerging power systems and aligned with wind farm realities. Stability simulations for grid connection were conducted under both voltage regulation mode and reactive power regulation mode across a range of wind speeds, revealing distinct technical behaviors. The findings suggest that the generator's terminal voltage, terminal current, active power, reactive power, and rotor speed exhibit strong correlations with variations in wind speed, and that all parameters are capable of stabilizing following initial disturbances. © 2024 IEEE.

关键词： Windmill

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Cyber-Attack Risk Assessment and Prevention Strategy of Substations Based on Dynamic Attack and Defense Game 3

Cyber-Attack Risk Assessment and Prevention Strategy of Subs...

引用

3rd power System and Green Energy Conference, PSGEC 2023

作者： Lin, Feng Mei, Yong Zhu, Yihua Chang, Dongxu Liu, Ren Guo, Hengdao China Southern Power Grid Power Dispatch and Control Center GuangZhou China Electric Power Research Institute China Southern Power Grid State Key Laboratory of Hvdc GuangZhou China Electric Power Research Institute China Southern Power Grid National Energy Power Grid Technology R&d Centre GuangZhou China China Southern Power Grid Csg Key Laboratory for Power System Simulation GuangZhou China Guangdong Provincial Key Laboratory of Intelligent Operation Control for New Energy Power System GuangZhou China

ISBN: (纸本)9798350340099

With the improvement of the informatization of the power system, the risk of cyber attack is also increasing. This paper proposes a risk assessment and prevention strategy for cyber attack against substations. Firstly, the cyber attack against substations are modeled based on the game theory of dynamic attack and defense. Secondly, an improved OPA (ORNL-PSERC-Alaska) model is utilized to analyze the cascade failure after cyber attacks and quantify the load loss of power system. Finally, a preventive strategy which can mitigate the expectation load loss caused by cyber attack against substations is put forward. Simulation experiments were conducted to validate the effectiveness of the proposed method. © 2023 IEEE.

关键词： Risk assessment

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Thermal runaway difference between fresh and retired lithium iron phosphate batteries under overheating 2

Thermal runaway difference between fresh and retired lithium...

引用

2023 2nd International Conference on Green Energy and power Systems, ICGEPS 2023

作者： Wang, Cong-Jie Wang, Shu-Ping Gao, Fei Li, Chang-Hao Zhu, Yan-Li State Key Laboratory of Explosion Science and Technology Beijing Institute of Technology Beijing100081 China Anhui Province Key Laboratory of Electric Fire and Safety Protection State Grid Laboratory of Fire Protection for Transmission and Distribution Facilities State Grid Anhui Electric Power Research Institute Hefei230601 China State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems China Electric Power Research Institute Beijing100192 China

Safety is an important factor restricting the cascade utilization of lithium-ion batteries (LIBs). In this paper, the safety characteristics of fresh and retired lithium iron phosphate batteries are investigated by means of a heating-triggered thermal runaway (TR). The results show that under the heating condition of 200 W, the internal short circuit (ISC) can directly cause the TR of a new battery and lead to an explosion with an overpressure of 98.9 kPa. However, there is still a buffer time of 13.1-22.3 min between the ISC and TR for the retired battery with states of health (SOHs) of 80% - 60%, and the retired battery cannot explode. The large-scale ISC onset time, TR onset time, and TR onset temperature of the 70% SOH battery are 27.4 min, 40.5 min, and 179.9 °C, respectively, which are the smallest among retired batteries, indicating that the 70% SOH battery may be more likely to trigger TR. The findings can provide guidance for the safe application of retired batteries. © Published under licence by IOP Publishing Ltd.

关键词： Lithium-ion batteries

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Research on Wind Turbine control Hardware in Loop Real-time Simulation and its Application

Research on Wind Turbine Control Hardware in Loop Real-time ...

引用

2023 IEEE Sustainable power and Energy Conference, iSPEC 2023

作者： Zeng, Guanming Tu, Liang Zhu, Yihua Li, Chengxiang Liu, Mingqun He, Peng State Key Laboratory of HVDC and CSG Key Laboratory for Power System Simulation Electric Power Research Institute China Southern Power Grid National Energy Power Grid Technology R&D Centre Guangdong Provincial Key Laboratory of Intelligent Operation Control for New Energy Power System Guangdong Guangzhou China Yunnan Power Grid Co. Ltd. Electric Power Research Institute Yunnan Kunming China

ISBN: (纸本)9798350322699

With the construction of new power system, high-capacity renewable energy sources including wind power are integrated into the power system, whose transient response characteristics have a significant impact on the safe and stable operation of both renewable energy sources and power system. Real-time simulation has become an effective method to study interaction between high-capacity renewable energy sources and power system because of its high accuracy and reliability, and precise wind turbine real-time simulation model is of great significance in research mentioned above. Therefore, the wind turbine control hardware in loop (CHIL) real-time simulation method is proposed in the paper, whose feasibility and accuracy are also verified by comparing simulation data from CHIL platform and on-site testing data. It's further used in the analysis of large-scale offshore wind farm cluster and connected power system as a practical reference case. © 2023 IEEE.

关键词： control hardware in loop power system analysis real-time simulation wind turbine

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grid-Forming Photovoltaic-Energy Storage System with Higher Flexibility Based on DC-Link Voltage Synchronization control

Grid-Forming Photovoltaic-Energy Storage System with Higher ...

引用

2024 CPSS and IEEE International Symposium on Energy Storage and Conversion, CPSS and ISESC 2024

作者： Wu, Mingkang Feng, Xingyu Zhu, Yihua Wang, Chenchen Luo, Chao Li, Kai Electric Power Research Institute China Southern Power Grid Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangdong Province Guangzhou City China School of Electrical Engineering Beijing Jiaotong University Beijing China

ISBN: (纸本)9798350380514

As the grid strength gradually weakens, there is an urgent need to enhance the weak grid adaptability and precise control capability of photovoltaic-energy storage (PV-ES) systems. This paper analyzes the basic principles of the PV-ES virtual synchronous generator (PV-ES VSG) control scheme under the common DC bus. A flexible control scheme for grid-connected PV-ES systems is proposed based on DC-link voltage synchronization control (DVSC). Compared to existing PV-ES VSG control schemes, the proposed scheme can significantly improve the control flexibility of the energy storage and increase the diversity of its control algorithms, while maintaining similar power support capabilities and grid-connected performance. This improvement not only optimizes the performance of the energy storage unit in the power grid, but also reduces its burden and pressure on DC bus voltage control. Simulation results based on MATLAB/Simulink and the experiment results based on the Hardware-In-Loop (HIL) platform validate the effectiveness and rationality of the proposed scheme. The comparison with the PV-ES VSG also shows the advantages of the proposed scheme. © 2024 IEEE.

关键词： Synchronous generators

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Analysis of Ultra-low Frequency Oscillation Stability of power Systems 6

Analysis of Ultra-low Frequency Oscillation Stability of Pow...

引用

6th International Conference on power and Energy Technology, ICPET 2024

作者： Cai, Kesu Liu, Dongsheng Zhao, Wenshuo Hong, Xi Yin, Yao Fei, Xuanqu State Key Laboratory of Smart Grid Protection and Control NARI Group Corporation State Grid Electric Power Research Institute NanJing China School of Electrical Engineering and Electronic Information Xihua University Chengdu China

ISBN: (纸本)9798350375855

The Low-Frequency Oscillation (LFO), Ultra-Low Frequency Oscillation (ULFO) and other oscillation can endanger the safety and stability operation of the power grid. However current relevant standards only have clear provisions on the critical damping ratio of LFO. Based on the risk of ULFO in high proportion hydropower systems, the principle and key influencing factors of ULFO are derived theoretically. According to the characteristics and hazards of ULFO, a method for determining the critical damping ratio of ULFO is explored, and the effectiveness of the method is tested through the actual response trajectory. © 2024 IEEE.

关键词： Damping

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Distributed power Restoration Method Based on Joint control of DGs

Distributed Power Restoration Method Based on Joint Control ...

引用

2023 International Conference on power System Technology, powerCon 2023

作者： Wang, Ruimei Cong, Wei Tang, Yi Wang, Anning Zhang, Yongjie Gu, Qianshuo Shandong University Key Laboratory of Power System Intelligent Dispatch and Control Jinan China State Grid Shandong Electric Power Company Jinan China

ISBN: (纸本)9798350300222

As the scale of power system continues to expand, the proportion of distributed generators (DGs) in the smart distribution network has been increasing year by year. To address the problem of power restoration after DGs access, distributed power restoration method based on joint control of photovoltaic unit and pv/battery unit is proposed. Analyzing the control modes of photovoltaic unit and pv/battery unit during distributed power restoration, available capacity and adjustment range are determined based on control principles and operation constraints. Based on this method, the network is gradually converted into Thevenin equivalent circuit, and power restoration calculations are performed while considering the operating characteristics of photovoltaic unit and pv/battery unit. At the same time, power output adjustment is carried out based on voltage and frequency constraints to avoid overvoltage or frequency problems during the power restoration process. Using IEEE 33-node system as an example, then the feasibility of this method is verified. © 2023 IEEE.

关键词： Restoration

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Optimization Strategy for Virtual Energy Storage of Electric Vehicles to Participate in Multiple Ancillary Services 5

Optimization Strategy for Virtual Energy Storage of Electric...

引用

5th International Conference on Clean Energy and Electric power Engineering, ICCEPE 2024

作者： Guo, Qi Gu, Haohan Zhao, Yifei Tu, Liang Chen, Qifang Cai, Haiqing Chen, Wei Chen, Zhihao Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangzhou510663 China Csg Key Laboratory for Power System Simulation Electric Power Research Institute China Southern Power Grid Guangzhou510663 China School of Electrical Engineering Beijing Jiaotong University Beijing100044 China

ISBN: (纸本)9798350390315

When EVs participate in multiple ancillary services of the power grid, due to the lack of a unified management scheduling plan, various ancillary service demands compete for limited energy storage resources. This would lead to conflicts when the virtual energy storage of EV participates in the regulation of multiple ancillary services. In order to solve the above problems, a reasonable and feasible optimization strategy for virtual energy storage of EVs is formulated to alleviate the conflict problems of ancillary services. The validity of the proposed method is verified by simulation cases. © 2024 IEEE.

关键词： control strategies electric vehicles multiple auxiliary services

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Design of Trading Adjustment Mechanism for Energy Storage in Electricity Market Based on Equivalent Net Load Fluctuation 6

Design of Trading Adjustment Mechanism for Energy Storage in...

引用

6th International Conference on Energy, Electrical and power Engineering, CEEPE 2023

作者： Song, Shihang Zhang, Li Qi, Zhiqiang Wang, Haibo Wang, Yuxi Su, Xinyan Chen, Guanting Wang, Fukun Shandong University Key Laboratory of Power System Intelligent Dispatch and Control Jinan China State Grid Shandong Electric Power Company Jinan China

ISBN: (纸本)9798350348279

As the proportion of renewable energy connected to grid increases continuously, the volatility and uncertainty of its output affect the safe operation of the power system, so it is necessary to adjust the trading mechanism of electricity market. As a high-quality flexible resource, energy storage becomes an important means to deal with the challenge caused by renewable energy. How to improve the mechanism of electricity market to better play the role of energy storage is worthy of in-depth research. This paper proposes a trading adjustment mechanism for energy storage in electricity market based on the fluctuation degree of equivalent net load, and establishes a joint market model of energy market and frequency regulation market including storage power station. The example simulation shows that the trading adjustment mechanism proposed in this paper can effectively enhance the role of energy storage, and has a good effect on improving the fluctuation degree of net load and reducing system operating costs. © 2023 IEEE.

关键词： power markets

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Real-time and Scalability of Smart Two Ticket System Based on Edge Computing in power grid Management 2

Real-time and Scalability of Smart Two Ticket System Based o...

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2nd International Conference on Data Science and Information System, ICDSIS 2024

作者： Huang, Chengwei Zeng, Jia Zhang, Fayan Zhang, Yubo Zhang, Wei Power Supply Bureau Of Guangxi Hezhou Power Grid Co. Ltd. Hezhou China Jia Zeng Guangxi Power Grid Co. Ltd. Nanning China Electric Power Research Institute Of Guangxi Power Grid Co. Ltd. Guangxi Key Laboratory Of Intelligent Control And Operation And Maintenance Of Power Equipment Nanning China

ISBN: (纸本)9798350381665

With the continuous development of Internet of Things (IoT) technology, edge processing platforms for power system characteristics have become an important technology. At present, many professional information systems of state grid Corporation of China are faced with the problem that information cannot be shared and collected. It is urgent to use the idea of the Internet of Things, high-performance edge computing and other methods to build an intelligent Internet of Things system. In this paper, a new intelligent Internet of Things system based on edge computing was studied according to the application requirements of smart grid for dynamic control, strategy management, data preprocessing, etc., aiming to reduce network transmission capacity, reduce operating costs, and further optimize equipment maintenance costs. Simulation experiments have shown that when the number of Centralized Unit of Execution and Heterogeneous Unit of Execution in the network was increased to 70 and 100, respectively, the unloading completion times of the schemes 'HUE Cloud Edge' and 'HUE-Cloud Edge GM' were between 0.25-0.45 and 0.2-0.4, respectively, which were lower than those of cloud and HUECloud Randomness. © 2024 IEEE.

关键词： Edge computing

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