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检索条件"机构=Key Laboratory of Intelligent Dispatching and Control of Power Grid"

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Design and research of high strength suspension clamp for transmission lines with large span 9

Design and research of high strength suspension clamp for tr...

引用

9th International Symposium on Sensors, Mechatronics, and Automation System, ISSMAS 2023

作者： Bian, Meihua Zhu, Dengjie Peng, Jianing Zhang, Zhiqiang Zhang, Xingsen Electric Power Research Institute of Guangxi Power Grid Co. Ltd Guangxi Key Laboratory of Intelligent Control and Maintenance of Power Equipment Nanning China Electric Power Research Institute Csg Guangzhou China

ISBN: (纸本)9781510672802

In order to study and design a high-strength suspension clamp suitable for a transmission line with a large transmission span, a finite element model of a high-strength suspension clamp for a transmission line with a large transmission span was established, and the high-strength suspension clamp was designed by using computational software to simulate and calculate the composition of high-strength materials. The results show that the cast iron overhang wire clamp in the transmission line with large span has safety risks, and the high strength overhang wire clamp designed in the study can effectively reduce the safety risks. © 2024 SPIE.

关键词： Aluminum Alloys Design and modelling Iron Materials properties Chemical composition Safety Computer simulations Finite element methods Zirconium

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Large-scale non-real-time Simulation Platform for power Systems Based on Cloud Computing 4

Large-scale non-real-time Simulation Platform for Power Syst...

引用

4th International Conference on Energy, power and Electrical Engineering, EPEE 2024

作者： Zhang, Jingyue Lu, Yuanhong Hu, Yufeng Zhang, Jie Guo, Haiping Huang, Libin Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangzhou China National Energy Power Grid Technology R&d Centre Guangzhou China China Southern Power Grid Co. Ltd Guangzhou China State Key Laboratory of Hvdc Electric Power Research Institute China Southern Power Grid Guangzhou China

ISBN: (纸本)9798331518066

The rapid evolution of smart grids has increased the complexity of power system structures and operational characteristics, presenting new challenges in system management and reliability. Traditional power system simulation tools struggle with non-real-time data processing and scalability due to limitations in their architectural designs. Moreover, existing cloud simulation platforms are constrained by closed hardware architectures and lack sufficient non-real-time capabilities. As a solution, we propose a novel large-scale non-real-time simulation platform for power systems based on cloud computing, designed with a modular architecture. By leveraging advanced technologies in cloud computing, parallel computing, and non-real-time simulation, our platform addresses critical needs for scalability, efficiency, and cost-effectiveness. We discuss how integrating these technologies enhances computational performance and supports complex simulation tasks, ultimately improving decision-making and operational efficiency in power system management. © 2024 IEEE.

关键词： Cloud platforms

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Study the Effect of the Polymerization Degree of Molecule on Influencing Mechanical Property of Epoxy Resin by Molecular Simulation 18th

Study the Effect of the Polymerization Degree of Molecule on...

引用

18th Annual Conference of China Electrotechnical Society, ACCES 2023

作者： Shaoming, Pan Lei, Zhang Jian, Zhao Yi, Su Xiajin, Rao Liangyuan, Chen Dajian, Li Guangxi Key Laboratory of Intelligent Control and Maintenance of Power Equipment Electric Power Research Institute of Guangxi Power Grid CO. LTD Guangxi Nanning530023 China Guangxi Power Grid CO. LTD Guangxi Nanning530023 China

ISBN: (纸本)9789819710676

Bisphenol A epoxy resin is widely used in electrical equipment. The mechanical property is closely connected to the operation of epoxy resin in power equipment, which is related to the molecular structure, such as molecular polymerization degree (PD). However, how the PD influence mechanical property of epoxy resin is still unclear. In this work, we studied the effect of molecular PD on influencing mechanical property of epoxy resin by molecular simulation. Based on Material Studio, epoxy molecules with PD of 0, 1 and 2 were established and the crosslinked structures were constructed by methyltetrahydrophthalic anhydride. Based on the crosslinked structures, the crosslinked densities, free volume fractions, glass transition temperatures and elastic moduluses were computed. It was found that the molecule with lower PD held a greater crosslinked density, a lower free volume fraction and a greater glass transition temperature. Meanwhile, the low PD also led to a greater Young's and shear modulus, and a lower bulk modulus. © Beijing Paike Culture Commu. Co., Ltd. 2024.

关键词： Molecules

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Research on the Application of Big Data in Transient Stability Simulation of power Systems 4

Research on the Application of Big Data in Transient Stabili...

引用

4th International Conference on Energy, power and Electrical Engineering, EPEE 2024

作者： Zhang, Jie Guo, Haiping Zhao, Yanjun Huang, Libin Hu, Binjiang Luo, Hui Zhang, Jingyue State Key Laboratory of Hvdc Electric Power Research Institute China Southern Power Grid Guangzhou510663 China National Energy Power Grid Technology R&d Centre Guangzhou510663 China 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 Guangzhou5106633 China

ISBN: (纸本)9798331518066

With the rapid expansion of smart grids, there is a growing complexity in power system dynamics, which increases the availability of real-time operational data and underscores the need for advanced transient stability simulations. Traditional transient stability analysis methods are constrained by their computational demands and may compromise accuracy. Furthermore, deep learning-based methods often focus on the application of a single algorithm, lacking a systematic consideration of the entire simulation process. To address these challenges, this study proposes a novel approach that leverages big data to enhance transient stability simulations. By integrating deep learning and ensemble learning techniques, the model significantly improves the accuracy and efficiency of predicting transient instabilities. The methodology utilizes a multi-source data acquisition and fusion scheme to ensure data comprehensiveness and a distributed storage architecture to handle large-scale datasets effectively. Advanced visualization technologies are also employed to enhance the interpretability of the simulation results. This comprehensive framework aims to support the safe and stable operation of power systems amid increasing complexity and data availability. © 2024 IEEE.

关键词： Transient stability

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Design and research of high strength nano-modified aluminum alloy ball-eye in heavy icing area 9

Design and research of high strength nano-modified aluminum ...

引用

9th International Symposium on Sensors, Mechatronics, and Automation System, ISSMAS 2023

作者： Zhu, Dengjie Bian, Meihua Huang, Zenghao Li, Junhua Gong, Bo Electric Power Research Institute Csg Guangzhou China Electric Power Research Institute of Guangxi Power Grid Co. Ltd Guangxi Key Laboratory of Intelligent Control and Maintenance of Power Equipment Nanning China

ISBN: (纸本)9781510672802

There is ice-shedding process of sudden load on conductor wire in heavy icing area, and the common aluminum alloy ball-eye has hidden danger of strength damage. In this paper, the model of suspension string-conductor wire is established, and the maximum axial force of the ball-eye is analyzed when it is completely ice-shedding in first gear. The finite element model of ball-eye is established and the stress analysis is carried out. The aluminum alloy was nanomodified, and the designed nano-modified aluminum alloy ball-eye was tested by tensile test. The results show that the common aluminum alloy ball-eye has safety risks in heavy icing area, and the nano-modified aluminum alloy ball-eye can meet the safety requirements in the heavy icing area and effectively reduce the damage risk. © 2024 SPIE.

关键词： Alloys Aluminum Design and modelling Ice Materials properties Particles Safety Finite element methods Clouds power grids

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FREQUENCY DOMAIN FAULT RANGING METHOD BASED ON PARAMETER ESTIMATION FOR SINGLE-ENDED FAULTS WITH ANTI-TRANSITION RESISTANCE IN DISTRIBUTION NETWORKS 20

FREQUENCY DOMAIN FAULT RANGING METHOD BASED ON PARAMETER EST...

引用

20th International Conference on AC and DC power Transmission 2024, ACDC 2024

作者： Lu, Jiangang Li, Haobin Chen, Qizhan Xu, Baojun Qiu, Junqi Li, Chunzhe Guangdong Power Grid Corp. Ltd. Power Dispatching and Control Center Guangzhou China Zhongshan Power Supply Bureau of Guangdong Power Grid Co. Ltd. Zhongshan China State Key Laboratory of Power Transmission Equipment Technology School of Electrical Engineering Chongqing University Chongqing China

ISBN: (纸本)9781837242672

A frequency domain fault ranging method based on parameter estimation is proposed for the single-end transition resistance in distribution networks, which is based on the ratio η of the corresponding frequency component of the zero sequence current spectrum between the upstream side of the fault point and the first end of the faulted feeder. The equivalent circuit is used to simulate the spectral characteristics of η, the optimal equivalent circuit parameter values are obtained through parameter estimation, a neural network describing the mapping relationship between the fault distance, the fault closing angle and the equivalent circuit parameter is established, and the fault ranging objective function is constructed to solve the fault distance. Example analysis shows that the fault ranging method proposed in this paper is not affected by the transition resistance, and is suitable for distributed photovoltaic access distribution system. © The Institution of Engineering & Technology 2024.

关键词： power distribution faults

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Electric Vehicle Load control Strategy Based on Improved Aquila Optimizer Algorithm 6

Electric Vehicle Load Control Strategy Based on Improved Aqu...

引用

6th Asia Conference on Energy and Electrical Engineering, ACEEE 2023

作者： Meng, Zijie Jin, Xin Liu, Jiale Cai, Xinlei Zhu, Jinzhou Pan, Tingzhe Power Dispatching and Controlling Center of Guangdong Power Grid Company Limited Guangdong China Institute of Measurement Technology China Southern Power Grid Electric Power Research Institute Co. Ltd Guangdong Provincial Key Laboratory of Intelligent Measurement and Advanced Metering of Power Grid Guangdong China

ISBN: (纸本)9798350312690

The accurate and reasonable charging/discharging strategy of electric vehicles plays an important role in power grid regulation. In this paper, a charging/discharging model of electric vehicles is constructed, which fully considers the impact of large-scale charging on the power grid. Secondly, the optimal objective function with the best economy is proposed. The improved Aquila algorithm is used to solve the objective function, and the optimal charging/discharging control strategy is obtained. Finally, the load control strategy of the electric vehicle is verified by a simulation example. In the calculation, different operating conditions are considered, and the comparative calculation results of different operating conditions shows that the optimization control strategy proposed in this paper not only improves voltage stability, but also significantly reduces the cost of charging and discharging after optimization, improves the economic efficiency of electric vehicle charging and discharge, and slightly reduces the impact on grid operation. © 2023 IEEE.

关键词： Electric vehicles

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Model for Quantifying Reliability Contribution of Distribution System with Distributed Generation Based on Shapley Value 6

Model for Quantifying Reliability Contribution of Distributi...

引用

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

作者： Zhang, Wei Zhou, Yangjun Yi, Chenying Pan, Juntao Huang, Weixiang Li, Shan Feng, Bin Zhou, Yuanchao Guangxi Key Laboratory of Intelligent Control and Maintenance of Power Equipment Electric Power Research Institute of Guangxi Power Grid Co. Ltd Nanning China Guangxi Power Grid Co. Ltd Nanning China Nanning Power Supply Bureau of Guangxi Power Grid Co. Ltd Nanning China

ISBN: (纸本)9798350375855

In the power system, power outages are usually caused by the distribution system. Therefore, it is necessary to allocate the system reliability indexes to each component, so as to identify the components that have great influence on the system reliability, and to optimize them in order to improve the system reliability. In this paper, firstly, multi-state output power model of distributed generation is established, using historical distributed generation data. Then, based on Shapley value, the system reliability indexes are allocated to each component, and by standardizing them, the contribution rate of each component to the system index can be obtained. Finally, a distribution system for RBTS Bus 6 is introduced as standard case to demonstrate the validity of the proposed method. By analyzing the calculation results, it can be obtained that the component contribution rate is related to the size of the component reliability parameters and the location of the component. © 2024 IEEE.

关键词： power distribution reliability

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Load Flexibility Evaluation Method for Industrial Parks Based on SPA and TOPSIS 25

Load Flexibility Evaluation Method for Industrial Parks Base...

引用

25th IEEE China Conference on System Simulation Technology and its Application, CCSSTA 2024

作者： Wang, Yubo Kong, Xiangyu Wang, Yang Zhang, Haixuan Wu, Shunyu Luo, Shuai Tianjin University of Technology Tianjin Key Laboratory of New Energy Power Conversion Transmission and Intelligent Control Tianjin China Tianjin University Key Laboratory of Smart Grid Tianjin China State Grid Tianjin Electric Power Company Tianjin China Economic and Technological Research Institute State Grid Tianjin Electric Power Company Tianjin China

ISBN: (纸本)9798350366600

With the requirement for an increased share of renewable energy, park load flexibility is needed to balance fluctuations between supply and demand. The factors affecting the load flexibility of the park are analyzed from four dimensions: high quality, high efficiency, security, and low carbon. The index system for evaluating the load flexibility of the park is constructed. Given the relevance of the load flexibility assessment indexes of the park, the grey entropy algorithm is improved, and the combined assignment method is proposed to enhance the assignment of the indexes' weights. The quantitative assessment method of park flexibility is proposed based on the coupling of SPA (Set Pair Analysis) and TOPSIS (Technique for Order Preference by Similarity to Ideal Solution). The simulation shows that this method can solve the shortcomings of traditional TOPSIS well and make the quantitative assessment results of park load flexibility more accurate, which can be a guide for evaluating the flexibility of other urban industrial parks. © 2024 IEEE.

关键词： evaluation indicators grey correlation analysis park load TOPSIS

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A Distributionally Robust Energy Storage Planning Model for Wind Integrated power System Based on Scenario Probability

A Distributionally Robust Energy Storage Planning Model for ...

引用

2023 International Conference on power Energy Systems and Applications, ICoPESA 2023

作者： Tang, Shunyu Li, Gengfeng Wang, Zitong Yang, Yinguo Lu, Qiuyu Xie, Pingping Chen, Yue Xi'an Jiaotong University State Key Laboratory of Electrical Insulationand Power Equipment Xi'an China Guangdong Power Grid Co. Ltd. Electric Power Dispatching and Control Center Guangzhou China

ISBN: (纸本)9798350345605

Global climate change places greater demands on the process of decarbonizing power systems. Battery energy storage can effectively cope with the uncertainty of renewable energy sources and reduce wind power curtailment. Because of the high cost, reasonable economic optimization is required for energy storage planning considering the uncertainty of wind. The traditional stochastic optimization is optimistic while the robust optimization is conservative. To overcome this problem, a two-stage distributionally robust energy storage planning model is proposed in this paper based on the historical information of wind power output. The economics of the energy storage investment scheme is considered in the first stage objective, and the second stage performs the system day-ahead dispatching. This paper used the norm-1 and norm-inf comprehensive constraints to establish the probability distribution uncertainty set of wind power, then tried to find the optimal solution of the model under the worst probability distribution. The column and constraint generation algorithm is used to improve the efficiency of the solution. The numerical test results demonstrate the effectiveness of the model and the method in this paper. © 2023 IEEE.

关键词： Energy storage

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