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7th IEEE Conference on Energy Internet and Energy System Integration, EI2 2023

作者： Hu, Shanhua Li, Yalou Zhang, Xing Mu, Qing Ma, Linlin Miao, Weiwei China Electric Power Research Institute State Key Laboratory of Control and Operation of Renewable Energy and Storage Systems Beijing China Dispatch Control Center Control Office State Grid Shandong Electric Power Company Beijing China

ISBN: (纸本)9798350345094

With the increasing integration of a significant number of Inverter-Based Distributed Generators (IBDGs), the transient characteristics on the low-voltage distribution network side have undergone substantial changes, rendering traditional stage division standards less applicable. This paper proposes a novel stage division standard for the transient response in Active Distribution Networks (ADNs), serving as a crucial tool for a more profound analysis of the interactions between ADNs and the transmission network. The paper begins by developing an electromagnetic model using a real ADN then performs large disturbance simulations for ADNs at different penetration levels, and introduces a new segmentation criterion based on the external characteristics of ADNs under large disturbances. By formulating mathematical models for the components within the ADN during transient stages, this paper delves into a mechanistic analysis of the external characteristics of ADNs at each phase and identifies key factors influencing the external characteristics in various stages. © 2023 IEEE.

关键词： Transient analysis

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A schedule power flow auto generating technology in day-ahead security validation

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Dianli Xitong Zidonghua/Automation of Electric power systems 2012年第20期36卷 68-73页

作者： Lin, Yi Sun, Hongbin Wu, Wenchuan Yu, Jun Zhang, Boming State Key Laboratory of Control and Simulation of Power Systems and Generation Equipments Tsinghua University Beijing 100084 China National Electric Power Dispatching and Communication Center Beijing 100031 China

Formulation of day-ahead operation schedule for large-scale power grid requires security validation, including static security, dynamic and transient stability. It is an important and basic task for day-ahead security validation to generate an AC power flow that satisfies the demand of the schedule. A new method of generating the day-ahead schedule power flow is proposed, which consists in dividing the problem into two subproblems-the active subproblem and the reactive subproblem. The inconsistency of various kinds of schedule data is coordinated by solving the active subproblem, while a rational voltage distribution is achieved by solving the reactive subproblem. Both of the two problems are formulated as optimization models with constraints satisfied and are solved with an interior point algorithm. Numerical test results on the testing system and real power systems show that the method is capable of providing rational day-ahead schedule power flow. © 2012 state Grid Electric power Research Institute Press.

关键词： Numerical methods

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Retraction notice to “Multi-objective planning of microgrid based on renewable energy sources and energy storage system” [J. Energy Storage 68 (2023) 107803]

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Journal of Energy Storage 2025年 117卷

作者： Hao Tian Keqing Wang Xiufeng Cui Zexi Chen Ergang Zhao Sara Saeedi School of Automation Wuxi University Wuxi 214105 China State Key Lab of Control and Simulation of Power Systems and Generation Equipments Dept. of Electrical Engineering Tsinghua University Haidian District Beijing 100086 China Beijing Sifang Engineering Co. Ltd Beijing 100085 China State Grid Beijing Urban Power Supply Company Beijing 100034 China Electrical Engineering Department Sun-Life Company Baku Azerbaijan

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Research on pre-synchronization control strategy of the micro-grid with multi-VSG

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Global Energy Interconnection 2018年第3期1卷 376-381页

作者： Tao Yan Cairan Wang Zong Liu Shaohua Xu Yu Ba Juntao Fei Jerry Y.S.Lin State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems Beijing Jiaotong University Zhenjiang Power Supply Company Electric Power Research Institute of State Grid Jiangsu Electric Power Co.LTD Arizona State University

Seamless switching is an important guarantee for the inverter to work continuously without stopping when gridconnected power generation system is the transient process from grid-connected to isolated island and from isolated island reclosing. Based on the principle of pre-synchronous operation of traditional synchronous generators, this paper analyzes the principle of pre-synchronous process and its effect on the steady-state of micro grid with multiple virtual synchronous generators. At the same time, the paper analyzes the transient influence of the closed pre-synchronous switch on the power distribution of the micro grid under different phase modes. This paper proposes a pre-synchronous control strategy based on phase recognition. MATLAB/Simulink simulation software is used to verify the correctness and validity of the proposed method.

关键词： Virtual synchronous generator(VSG) power allocation Pre-synchronization Phase identification

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Peaking Demand Analysis and Visualization simulation Platform Implementation of High Proportion of Wind power Infiltration Grid

Peaking Demand Analysis and Visualization Simulation Platfor...

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2020 IEEE/IAS Industrial and Commercial power System Asia, I and CPS Asia 2020

作者： Lv, Xiangyu Li, Dexin Li, Junhui Ge, Changxing Tian, Chunguang Wang, Jiarui Yan, Gangui Electric Power Research Institute State Grid Jilin Electric Power Co. Ltd. Changchun China Key Laboratory of Modern Power System Simulation and Control Renewable Energy Technology Jilin China

ISBN: (纸本)9781728143033

This paper proposes a analysis method of peak shaving demand for power grid, and analyzes the impact of wind power grid connection on power system peak shaving under different wind power permeability, and analysis the operational characteristics of energy storage assisted peak shaving to compare different energy storage systems. Finally, in order to facilitate the implementation and observation of the analysis results, a visual simulation platform was built. The results of the example show that the method described in this paper can accurately analyze the peaking shaving demand under different wind power permeability. At the same time, the total yield of lithium iron phosphate battery is the highest in the choice of energy storage type, which is 497 million yuan/year. All-vanadium redox flow batteries may benefit more than lithium iron phosphate batteries in the future due to battery characteristics. Finally, the visualization platform is true and effective and can fully express the method described in this paper. © 2020 IEEE.

关键词： Wind power

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Economic Analysis of Peak Regulation of Fire Storage System Based on Northeast Electric Auxiliary Service Market 4

Economic Analysis of Peak Regulation of Fire Storage System ...

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4th International Conference on power and Energy Technology, ICPET 2022

作者： Zhao, Haiji Zhang, Jingxiang Yu, Jun Jin, Xuezhu Hou, Kaiyuan An, Chenyu Xu, Fei Li, Junhui Northeast Branch of State Grid Corporation of China 110180 China Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology Jilin132012 China

ISBN: (数字)9781665480796

ISBN: (纸本)9781665480796

With the proposal of 'dual carbon' goal, the installed capacity of new energy is increasing rapidly, but the randomness and unpredictability of new energy affect the security of power grid. The stability of power grid requires the thermal power plant to carry out the task of peak regulation, but the thermal power plant to undertake the task of deep peak regulation is not high income, poor enthusiasm. Based on the operation rules of auxiliary service market in Northeast China, this paper studies the deep peak shaving task of energy storage system auxiliary thermal power plant. At the same time, the cost of all-vanadium flow battery was modeled and calculated, and the control strategy of charge and discharge limit of energy storage was adopted based on the depth peak shaving benchmark. The cost model and profit model of the energy storage system are constructed, and the economic analysis of the energy storage system in the combined fire storage system is carried out. Further explore the feasibility of energy storage system combined with thermal power plant peak regulation. © 2022 IEEE.

关键词： Economic analysis

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Wind power Generation Capacity Evaluation Based on Correlation Analysis of Adjacent Wind Farms

Wind Power Generation Capacity Evaluation Based on Correlati...

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2021 IEEE Sustainable power and Energy Conference, iSPEC 2021

作者： Sun, Shuxin Qiao, Ying Lu, Zongxiang Ma, Yanhong Tsinghua University State Key Lab of Control and Simulation of Power Systems and Generation Equipments Dept. of Electrical Engineering Beijing100084 China State Grid Gansu Electric Power Company Wind Power Technology Center Lanzhou730050 China

ISBN: (纸本)9781665414395

Accurate assessment of the power generation capacity of the wind farm is the key basis for incorporating it into power system scheduling and other optimizing operation activities. Traditional evaluation methods, such as benchmarking wind turbine method, have higher requirements for input data, but many wind farms in operation for many years are difficult to meet such data conditions. A new power generation capacity evaluation method based on correlation analysis of adjacent wind farms is proposed in this paper. Meteorological data and power of adjacent wind farms are used as replaced input data based on correlation analysis between the target farm with its adjacent farms. First, anticipate wind speed data and then construct the wind power curve with three different neural networks to evaluate power generation capacity. Afterwards, adjacent wind farms are used as data sources to fit the power data of the target wind farm with the application of influence radius method, inverse square distance method and bilinear interpolation method. Finally, combined with data in the actual case, investigate the advantages and disadvantages of different methods in the evaluation of power generation capacity. © 2021 IEEE.

关键词： Time delay

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Research on Reactive power Planning Technology of power Grid Containing UHVDC System with High Proportion of Renewable Energy Integration 7

Research on Reactive Power Planning Technology of Power Grid...

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7th IEEE International Conference on High Voltage Engineering and Application, ICHVE 2020

作者： Yan, Li Xinshou, Tian Jianzu, Hu Chao, Liu China Electric Power Research Institute China State Key Laboratory of Operation and Control of Renewable Energy Storage Systems Beijing China

ISBN: (纸本)9781728155111

In large-scale renewable energy bases, thousands of renewable energy power generation units are often installed, but wind power is different from the reactive characteristics of traditional thermal power plants, the renewable energy power plant is essentially a weak grid with strong voltage sensitivity. Weak-end power grids have weak voltage support capabilities and prominent reactive power problems. Under the operating conditions of large-scale renewable energy generation, heavy line load and other operating conditions, the randomness and fluctuation of renewable energy generation will lead to the voltage of the local power grid in the connected area. Large fluctuations can easily induce serious system security and stability accidents. The occurrence of multiple large-scale wind power off-grid accidents has highlighted the problem of system reactive voltage stability caused by large-scale renewable energy grid connection. The existing reactive voltage control method based on a single renewable energy power plant has been unable to meet the needs of large-scale renewable energy development, and it is urgent to study the renewable energy power generation unit in a large renewable energy power plant that takes into account the voltage distribution and rapid change of active power in the field, and centralized reactive power compensation equipment reactive voltage control mode. The impact of large-scale renewable energy centralized connect to the reactive voltage stability of the power grid is not only a local issue but has become a global issue. It is necessary to carry out research on reactive power allocation of power systems that takes into account the large-scale renewable energy grid connection. By coordinating the reactive power control of large-scale renewable energy bases and the main grid, the voltage stability level of the entire system is improved to prevent large-scale wind power off-grid accidents. © 2020 IEEE.

关键词： Voltage control

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Review and Reflection on New Energy Participating in Electricity Spot Market Mechanism

Review and Reflection on New Energy Participating in Electri...

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2021 IEEE Sustainable power and Energy Conference, iSPEC 2021

作者： Wang, Xiangyan Peng, Peipei Chen, Ning China Electric Power Research Institute State Key Laboratory of Operation and Control of Renewable Energy Storage Systems Nanjing210003 China

ISBN: (纸本)9781665414395

In the context of global energy transition, China's new energy sources continue to develop rapidly, and the new round of electricity reform puts forward important requirements on how to design reasonable mechanisms to promote the consumption of new energy sources. This paper compares and summarizes the market mechanisms for promoting new energy consumption in mature foreign electricity spot markets, such as those in the United states, Australia and Northern Europe. Then it introduces the characteristics of the construction of electricity spot markets and related mechanisms for promoting new energy consumption in eight pilot provinces in China. By comparing the current situation of the development of spot markets for new energy participation at home and abroad, and combining the challenges faced by the construction of domestic electricity spot markets at present, suggestions are made to promote the construction of markets for new energy consumption in China. © 2021 IEEE.

关键词： Energy utilization

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Research on time series data of renewable energy output based on ga-lstm model of multi-source data fusion

Research on time series data of renewable energy output base...

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2021 International Conference on power System Technology, powerCON 2021

作者： Ma, Jiong Liu, Yanzhang Chen, Ning Zhang, Lei Sun, Bo China Electric Power Research Institute State Key Laboratory of Operation and Control of Renewable Energy Storage Systems Beijing100192 China

ISBN: (纸本)9781665407373

The analysis and research of time series output data of new energy stroke power is of great significance. By analyzing the time series data of wind power, this paper forecasts the wind power, and proposes a short-term wind power prediction method based on long-term and short-term memory deep learning model based on multi-source data. Then the weight of LSTM network is optimized by genetic algorithm to improve the prediction accuracy of the overall model. The model is verified based on the real historical data of new energy power stations. Results show that the prediction model proposed in this paper has higher prediction accuracy than the traditional time series prediction methods. © 2021 IEEE.

关键词： Genetic algorithms

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