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

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An Additional PSS Design for grid-Forming Converters Tied to Stiff grid

An Additional PSS Design for Grid-Forming Converters Tied to...

引用

power System and Green Energy Conference (PSGEC)

作者： Zhuoqi Hou Jiangang Lu Zhiwen Yu Ruifeng Zhao Wenxin Guo Meng Zhan State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan China Power Dispatching Control Center of Guangdong Power Grid Guangzhou China

ISBN: (数字)9798350365573

ISBN: (纸本)9798350365580

With integration of a large number of power electronic devices into the grid, stability issues are continuously occurring. In this paper, a design method for an additional stabilizer specifically for the instability issues caused by grid-forming converters under stiff grid conditions is proposed. Firstly, a detailed model and a simplified model of the grid-forming converter tied system are established. Borrowing the phase compensation method of power system stabilizer (PSS) for synchronous machines, an additional stabilizer for grid-forming converters is designed. The impact of introduction of additional stabilizer and the variation of parameters on the critical short-circuit ratio (CSCR) of grid-forming converters are analyzed. Finally, the above analysis is verified in Matlab/Simulink. The results show that the proposed design method for the additional stabilizer can effectively increase the CSCR of the grid-forming converter tied system, and enhance the static synchronous stability under stiff grid conditions.

关键词： Green energy Filtering Design methodology power system stability Stability analysis Mathematical models power electronics Synchronous machines MATLAB grid forming

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Low-Carbon Dispatch Strategy for Virtual power Plant Based on Bagging Ensemble Learning Forecasting Method

Low-Carbon Dispatch Strategy for Virtual Power Plant Based o...

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IEEE Student Conference on Electric Machines and Systems

作者： Guang Li Xin Dong Li Li Yue Yu Changgang Li State Grid Jinan Power Supply Company Jinan China Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong University Jinan China

ISBN: (数字)9798350366945

ISBN: (纸本)9798350366952

Virtual power plants (VPPs) struggle with peak-shaving due to unreliable distributed generation (DG) data and the intermittent nature of wind and solar power, impacting carbon emissions. This paper proposes a low-carbon dispatch strategy for VPPs based on a Bagging ensemble forecasting model. Firstly, a VPP dispatch framework based on DG output and load forecasting is established, and a Bagging ensemble forecasting model with feature selection is proposed. Secondly, the control characteristics of flexible industrial, commercial, and residential loads are analyzed to establish a control cost model, which is then integrated with the balanced relationship between wind, photovoltaic, and energy storage, as well as the carbon emission mechanism, to formulate a low-carbon dispatch model. Finally, the simulation results show that the proposed strategy can improve the accuracy of DG output and load forecasting in complex feature environments while realizing the interaction between source-grid-load and reducing the generation and operation costs of the grid.

关键词： Analytical models Costs Carbon dioxide Predictive models Wind power generation Virtual power plants Forecasting Wind forecasting Bagging Load modeling

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Distributed Generation Planning for Improving Self-healing Ability of Distribution Network

Distributed Generation Planning for Improving Self-healing A...

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Energy Engineering and power Systems (EEPS), International Conference on

作者： Haobin Li Huijuan Tan Yueting Lin Zhiwei Chen Ziheng Pan Bo Hu Electric Power Dispatching and Control Center Guangdong Power Grid Co. Ltd. Guangzhou China State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing China

ISBN: (数字)9798350375138

ISBN: (纸本)9798350375145

With a large number of Distributed Generation (DG) connected to the distribution network, the distribution network can be reconstructed and isolated island partition for self-healing. In this paper, the two-layer configuration DG operation-planning joint optimization model for improving self-healing ability of distribution network is established to achieve economy and self-healing ability of the system. IEEE 33-node system is used to verify the proposed model. The results show that the two-layer model can effectively coordinate the economy and self-healing ability of distribution network through interactive decision-making of DG allocation scheme.

关键词： Optimization models Decision making Distribution networks Planning Distributed power generation power systems Resource management Optimization

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A Compatibility Evaluation Method for Substation Protection and Monitoring System Based on G1 Method and Expert Investigation 3

A Compatibility Evaluation Method for Substation Protection ...

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3rd International Conference on New Energy and power Engineering, ICNEPE 2023

作者： Xia, Hao Deng, Xiongyao Ma, Shizhong Yan, Yuxiang Xue, Ancheng Liu, Yu Shu, Zhihuai Chang, Naichao Li, Zhongqing Meng, Jiangwen Dou, Xuewei Wang, Shenqiang Wu, Fangying Fan, Chen State Key Laboratory of Alternate Electrical Power System with Renewable Energy Source North China Electric Power University Beijing China National Electric Power Dispatching and Control Center of State Grid Corporation of China Beijing China China Electric Power Research Institute Beijing China Beijing Sifang Engineering Co. Ltd Beijing China China Electric Power Research Institute Power Automation Department Nanjing China

ISBN: (纸本)9798350393224

In existing protection and monitoring system of substation(S-PMS), there are compatibility problems between hardware and software or between software-hardware combinations and systems, including differences in communication protocols between different manufacturers and differences in system adaptation. Compatibility issues have become a growing focus area for the power industry. This paper proposes a method to evaluates the compatibility of the protection and monitoring system of substation based on the G1 and expert investigation, for the existing or unbuilt substations. In detail, Firstly, according to the compatibility requirements of the substation protection and monitoring system, corresponding indicators are proposed and a comprehensive compatibility evaluation model is constructed. Secondly, based on the comprehensive evaluation model, the evaluation results of typical stations without domestic chips and optimized stations using domestic chips are compared to verify the feasibility of the proposed method. © 2023 IEEE.

关键词： Compatibility evaluation G1 method Protection and monitoring system

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Voltage control Method for Offshore Floating Photovoltaic Storage Hydrogen Production DC System

Voltage Control Method for Offshore Floating Photovoltaic St...

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System Simulation Technology and its Application (CCSSTA), IEEE China Conference on

作者： Hongbin Liu Xiangyu Kong Delong Zhang Chunjie Wang Hui Jin Yangping Shao Tianjin Key Laboratory of New Energy Power Conversion Transmission and Intelligent Control Tianjin University of Technology Tianjin China Key Laboratory of Smart Grid Tianjin University Tianjin China

ISBN: (数字)9798350366600

ISBN: (纸本)9798350366617

To address the problems of high PV output volatility and unstable DC system voltage control caused by environmental influences on offshore floating photovoltaic hydrogen production systems, this paper proposes a voltage control method based on voltage stabilization for the DC system model of PV storage hydrogen production. Aiming to improve PV power generation quality and enhance system stability, this control method includes maximum power point tracking (MPPT) control for the floating PV system and adaptive coordinated control for the hydrogen storage system. These controls enable the optimal utilization of light resources while ensuring stable bus voltage. Finally, the effectiveness of the control method was verified by simulation.

关键词： Photovoltaic systems Maximum power point trackers Adaptation models Hydrogen storage Adaptive systems Hydrogen control systems Stability analysis Systems simulation Voltage control

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Optimal layout design for photovoltaic shadow occlusion based on Sketchup and PVsyst

Optimal layout design for photovoltaic shadow occlusion base...

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System Simulation Technology and its Application (CCSSTA), IEEE China Conference on

作者： Zilong Yu Chunjie Wang Xiangyu Kong Lujie Yu Yangping Shao Hui Jin Tianjin Key Laboratory of New Energy Power Conversion Transmission and Intelligent Control Tianjin University of Technology Tianjin China Key Laboratory of Smart Grid Tianjin University Tianjin China

ISBN: (数字)9798350366600

ISBN: (纸本)9798350366617

As photovoltaic (PV) systems gain global popularity, effectively minimizing the impact of shading on PV system performance has become a significant design challenge. This paper introduces a systematic and comprehensive shading analysis method that integrates SketchUp and PVsyst software; by utilizing SketchUp for customized 3D modeling and high-precision shading analysis, this method can effectively identify and address shading issues that are difficult to detect using traditional methods, thereby optimizing module layout and enhancing overall system performance. Subsequently, PVsyst is used to simulate and evaluate system efficiency and losses under different conditions. The aim is to improve the accuracy and efficiency of PV system design and to provide a new approach to optimizing photovoltaic system design by combining 3D modeling with performance simulation.

关键词： Photovoltaic systems Economics Analytical models Adaptation models Three-dimensional displays Systematics System performance Layout Software Systems simulation

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Research on the Real-Time Closed-Loop Testing of AGC in AC/DC Asynchronous power grid

Research on the Real-Time Closed-Loop Testing of AGC in AC/D...

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2021 International Conference on power System Technology, powerCON 2021

作者： Ou, Kaijian Peng, Junzhen Wu, Wencong Guo, Qi Hu, Yaping China Southern Power Grid State Key Laboratory of Hvdc Electric Power Research Institute China Csg Power Dispatching and Control Center Guangzhou510663 China

ISBN: (纸本)9781665407373

Automatic generation control (AGC) is an important function in power grid dispatching automation system. Under the environment of unified frequency control and electricity spot market, the importance of AGC control function is becoming more and more prominent. A real-time closed-loop AGC test scheme of AC/DC asynchronous power grid is proposed in this paper. And then the communication interface between real-time simulation platform and heterogeneous system of grid-province AGC as well as the real-time closed testing technologies are researched and developed. Moreover, the the real-time closed-loop testing of AGC in AC/DC asynchronous network is constructed and simulation testing based on two cases is carried out. The simulation testing results verify the accuracy of AGC control strategies and the effectiveness of grid-province AGC joint closed-loop testing platform, which provides good technical means for AGC function and performance testing as well as for the safe and economic operation of power grid. © 2021 IEEE.

关键词： Electric load dispatching

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Adaptive Signal Extraction for Weak Early Stage Partial Discharge Online Monitoring in RMU 5

Adaptive Signal Extraction for Weak Early Stage Partial Disc...

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2023 5th International Conference on Artificial Intelligence and Computer Applications, ICAICA 2023

作者： Wang, Zhaohui Zheng, Minqiao Lu, Yewang Dena, Yaodong Niu, Heng Qiao, Feng Huang, Chuankai Yan, Quanbo Tian, Hong School of Electrical Engineering and Automation Xiamen University of Technology Xiamen Key Laboratory of Frontier Electric Power Equipment and Intelligent Control Xiamen China Yueyang Power Supply Company State Grid Hunan Electric Power Co. Ltd. Yueyang China Sunwe Technology Co. Ltd. Xiamen China

ISBN: (纸本)9798350323313

In order to clear off interference that covers the weak early-stage partial discharge (PD) signals obtained from online monitoring for ring-main-units (RMU), an adaptive algorithm coordinating particle swarm optimization (PSO) and variational mode decomposition (VMD) was proposed in this study. Based on the features of PD online monitoring signals in RMUs of power distribution system, the local-convergence problem of PSO was avoided. And with the help of PSO the over-decomposing problem of VMD were overcome. Simulation study of the proposed algorithm was then performed, with PD signals generated by 4 typical mathematical expressions, which was fully covered by interference signals consist of white noise and narrowband periodic signals. Industrial application was also performed, using the proposed algorithm to process the interfered PD online monitoring data obtained at the early-stage of RMU defect. Both applications yielded successful results. And comparison against EMD and CEEMDAN showed superiority of the proposed algorithm. © 2023 IEEE.

关键词： Variational mode decomposition

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Optimal Scheduling of Provincial local Coordinated Based on Source-grid-load-storage Interactions

Optimal Scheduling of Provincial local Coordinated Based on ...

引用

System Simulation Technology and its Application (CCSSTA), IEEE China Conference on

作者： Haixuan Zhang Xiangyu Kong Delong Zhang Jiancun Liu Xuesong Zhou Mao Liu Tianjin Key Laboratory of New Energy Power Conversion Transmission and Intelligent Control Tianjin University of Technology Tianjin China Key Laboratory of Smart Grid Tianjin University Tianjin China

ISBN: (数字)9798350366600

ISBN: (纸本)9798350366617

Considering the characteristics of coordination among source-network-load-storage, a provincial local coordinated scheduling method based on the interaction of sourcenetwork-load-storage is proposed. Firstly, the interaction mechanism of source-grid-load-storage is refined. Secondly, according to the spatial characteristics of the scheduling of provincial local coordinated, a multi-objective optimal scheduling model is established with the objectives of economy and new energy consumption. Thirdly, a genetic algorithm is used to solve the problem. Finally, by analyzing the examples, it is proved that the proposed method can reduce the system cost and improve the utilization rate of new energy.

关键词： Energy consumption Costs Optimal scheduling Systems simulation Genetic algorithms

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Research on Low Order Harmonic Suppression of Motor Drive System under Two-Phase Rotating Coordinate Frame 17th

Research on Low Order Harmonic Suppression of Motor Drive Sy...

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17th Annual Conference of China Electrotechnical Society, CES 2022

作者： Yong, Tao Liu, Jing Li, Wenxiao Yang, Guanjian Tang, Mengyang Miao, Yiru Key Laboratory of Smart Grid and Intelligent Control of Nanchong Southwest Petroleum University Nanchong637001 China State Grid Jiangsu Electric Power Co. LTD. Extra-High Voltage Branch Company Nanjing211002 China College of Electrical and Information Engineering in Hunan University Changsha410082 China State Grid Sichuan Electric Power Company Chengdu610041 China

ISBN: (纸本)9789819904075

Due to nonlinear factors such as dead-time and tube voltage drop, low-order harmonics will be injected into the output voltage of the inverter, resulting in fifth and seventh harmonic distortion of stator current and increasing torque ripple. At the same time, the natural frequency of inductor motor used in electrical vehicle is low, when the motor runs at medium and high speed, the low harmonic frequency of the current coincides with the natural frequency of the motor, resulting in resonance. To solve the above problems, firstly, the simulation and test method of the natural frequency of the IM is studied, and the natural frequency range of the IM is determined. Then, based on the analysis of the harmonic distortion characteristics caused by dead-time and tube voltage drop, a sixth harmonic controller is added to the current inner loop of the vector control system after rotor flux orientation (d-q coordinate), and the design method of the controller parameters is studied. Finally, the simulation model is established, which shows that the theoretical analysis and the proposed harmonic control method are correct and feasible. © 2023, Beijing Paike Culture Commu. Co., Ltd.

关键词： Harmonic distortion

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