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检索条件"机构=Hunan Provincial Key Laboratory of Power System Operation and Control"

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Transient Voltage Stability Assessment Method based on gcForest

Transient Voltage Stability Assessment Method based on gcFor...

引用

2021 International Conference on Electrical, Electronics and Computing Technology, EECT 2021

作者： Zhiyuan, Sun Mingpo, L.I. Jie, Zhang Binjiang, Hu Guo, Qi Yihua, Zhu Guangxi Power Grid Electrical Power Research Institute China State Key Laboratory of HVDC Electric Power Research Institute CSG China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System China CSG Key Laboratory of Power System Simulation

Aiming at the fact that the traditional method cannot quickly and accurately judge the power system transient voltage stability, and the deep neural network method needs many sample data sets and has a large number of hyperparameters, a power system transient voltage stability assessment method based on deep forest (gcForest) is proposed. gcForest effectively extracts features through ensemble learning, multi-layer feature transformation, and dynamically adjusting the number of model layers. Finally, this method is applied to transient voltage stability assessment of an electrolytic aluminium load-intensive area in Guangxi power Grid. The results show that the method has high accuracy, the feasibility and effectiveness of this method are verified. This method can assist dispatchers to judge the transient voltage stability of the power grid. © Published under licence by IOP Publishing Ltd.

关键词： Deep neural networks

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Computer Aided Design of Two-wheel Self-balancing Vehicle Based on STM32

Computer Aided Design of Two-wheel Self-balancing Vehicle Ba...

引用

2021 IEEE International Conference on Data Science and Computer Application, ICDSCA 2021

作者： Luo, Cong Li, Hui Tang, Jie Lin, Li Wang, Yuan Peng, Wang Zhu, Lei Shaoyang University Shaoyang422000 China Hunan Provincial Key Laboratory of Grids Operation and Control on Multi-power Sources Area Shaoyang422000 China

ISBN: (纸本)9781665440530

Two-wheeled vehicle is an essentially unstable robot, which has the characteristics of multi-variable, non-linear, strong coupling, time-varying, and parameter so fun certainty. In this paper, the two-wheeled self-balancing vehicle system based on STM32 is designed: (1) In terms of hardware, two reduction motors with parallel distribution at both ends of the uniaxial are used as mobile driving devices. STM32F103C8T6 and MPU6050 are used for real-time attitude acquisition, and the attitude data are decoded by Digital Motion Processor (DMP). (2) In terms of software, the cascade PID is adopted. Based on the obtained attitude data, the controller STM32 calculates the reasonable pulse frequency and pulse number through the PID control algorithm, so as to realize the real-time dynamic control of the two reduction motors and maintain the self-balancing of the car. In addition, based on Android mobile platform and Bluetooth data transmission technology, control mobile APP to complete the real-time control of the car system. © 2021 IEEE.

关键词： Balancing

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Coordinated control Strategy for Active Support of power on Multiple Scenarios in Doubly-Fed Wind power and Synchronous Generator Bundled Delivery system

Coordinated Control Strategy for Active Support of Power on ...

引用

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

作者： Wuneng Ling Zhencheng Liang Li Xiong Yangdou Liang Yin Wu Qiuquan Deng Zhuohang Liang Chengxiang Li Guangxi Power Grid Dispatch and Control Center Nanning China Guangxi Power Grid Dispatch and Control Center Nanning China Nanning China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Electric Power Research Institute China Southern Power Grid Guangzhou China

ISBN: (数字)9798350375138

ISBN: (纸本)9798350375145

Aiming at the problem of poor frequency characteristics of the delivery island in the case of large-scale wind power and synchronous generator bundled via Ultra-high-Voltage Direct Current (UHVDC) transmission system, a coordinated control strategy is proposed for doubly-fed wind power and synchronous generator to jointly support the frequency of the delivery system, and The frequency modulation setpoint for doubly-fed wind power is crafted to flexibly switch its active support mechanism in response to different scenarios., and effectively improves the frequency stability of the delivery island system of wind power and synchronous generator bundled with the wind power and the synchronous generator. Using RTLAB, we constructed a simulation model integrating large-scale doubly-fed wind power and synchronous generators coupled with a DC transmission system. This model validates the efficacy of the control strategy proposed in this study..

关键词： Frequency modulation Doubly fed induction generators Wind power generation power system stability control systems Synchronous generators Stability analysis Wind turbines Frequency synchronization Frequency control

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Safety Protection system Computer Aided Design in Enclosed Vehicle Using Film Pressure Sensor and Microwave Radar

Safety Protection System Computer Aided Design in Enclosed V...

引用

2021 IEEE International Conference on Data Science and Computer Application, ICDSCA 2021

作者： Peng, Wang Li, Hui Tang, Jie Lin, Li Teng, Zhaoyi Luo, Cong Zhu, Lei Zhu, Zhaopei Shaoyang University Shaoyang422000 China Hunan Provincial Key Laboratory of Grids Operation and Control on Multi-power Sources Area Shaoyang422000 China

ISBN: (纸本)9781665440530

In view of the phenomenon that children are stranded in enclosed vehicle and lead to their death from time to time, a safety protection system based on STM32 is designed. With the safety seat as the carrier and STM32 as the main control chip, the film pressure sensor and microwave radar are used to detect whether there are children sitting, the temperature, the humidity sensor and the carbon dioxide in enclosed vehicle. When the threshold is exceeded, it will alarm. Build an intelligent monitoring system with the trinity of perception, calculation and alarm. The experimental debugging results show that the safety protection system can better meet the needs of safety protection for children stranded in enclosed vehicle. © 2021 IEEE.

关键词： Alarm systems

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Research and Implementation of control Strategies for Multiple Transmission Modes in Yongren-Funing HVDC

Research and Implementation of Control Strategies for Multip...

引用

2022 IEEE International Conference on power systems and Electrical Technology, PSET 2022

作者： Zhu, Yukun Huang, Libin Li, Shuyong Zhu, Yihua Jia, Xuantao Jia, Xuantao State Key Laboratory of Hvdc Electric Power Research Institute China Southern Power Grid Guangzhou China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System China Southern Power Grid Guangzhou China Csg Key Laboratory for Power System Simulation Electric Power Research Institute China Southern Power Grid Guangzhou China Zhejiang Electric Power Co Ltd Ehv Branch Company of State Grid Hangzhou China Xj Electric Co Ltd Xuchang China

ISBN: (纸本)9781665489157

The ± 500 kV Yongren-Funing HVDC transmission project is the first HVDC whose sending and receiving ends are both located in the same province, its inverter station is required to transmit power to different AC asynchronous grids according to the different requirements of the grid operation. The present control and protection system of HVDC cannot adapt to and meet the technical requirements of multiple power transmission modes. In order to achieve this goal, the control system of HVDC must be capable of automatic discrimination and sequential control, selecting the correct strategy of reactive power control (RPC), which is essential for the stable operation of the HVDC system. Therefore, based on the operating conditions of the HVDC system and the switch configuration of the AC switch yard of the inverter station, the principle, process and interlocking conditions of automatic switching between different transmission modes are systematically analyzed. Effects on RPC, last breaker and the over voltage protection of AC busbar are researched. The control strategies for multiple transmission modes have great significance for the similar HVDC/UHVDC transmission projects in the future. © 2022 IEEE.

关键词： Reactive power

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power system Small-signal Stability Assessment Model Based on Residual Graph Convolutional Networks 5

Power System Small-signal Stability Assessment Model Based o...

引用

2021 5th International Conference on Electrical, Automation and Mechanical Engineering, EAME 2021

作者： Su, Yinsheng Guo, Mengxuan Yao, Haicheng Guan, Lin Huang, Jiyu Zhu, Siting Zhong, Zhi Department of Power System Operation China Southern Power Grid Guangzhou China School of Electric Power South China University of Technology Guangzhou China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangzhou China

Small-signal stability (SSA) is important to power system security. A data-driven approach is established for rapid prediction of the power system oscillation characteristics. The key of the approach is the Graph Convolution Networks (GCN) with residual mechanism, which works to aggregate features from high-dimension steady-state operation information and is denoted as ResGCN (RESidual GCN) in the paper. The residual mechanism helps to overcome the network degradation phenomenon. Both the oscillation frequency and damping ratio of multiple modes can be predicted by the proposed model. The performance of the proposed scheme as well as its adaptability to the power system topological changes is verified on the IEEE 39 Bus system. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Convolution

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Comparative study of Amplitude Spectrum Estimation Methods for Vibration Test under Continuous Sinusoidal Excitation 7

Comparative study of Amplitude Spectrum Estimation Methods f...

引用

7th International Conference on Information Science and control Engineering, ICISCE 2020

作者： Liu, Xinbo Zhao, Yice Shaoyang University Hunan Provincial Key Laboratory of Grids Operation and Control on Multi-Power Sources Area Shaoyang China Shaoyang University Hunan Provincial Key Laboratory of Power System Operation and Control Shaoyang China

ISBN: (纸本)9781728164069

Amplitude spectrum estimation is a kind of effective method for the vibration states. The effects of several commonly spectrum estimation methods in sinusoidal logarithmic frequency sweep vibration test were studied and the anti-interference abilities of four amplitude spectrum estimation methods (Harmonic, Average, RMS and Peak) were tested under measurement noise and input noise. Besides, their results were compared under the same estimation situation. At the same time, the amplitude spectrum estimation under the second-order system with single degree of freedom was extended to the second-order system with multiple degrees of freedom. After testing, comparing and verifying, the research provides a basis for selecting the appropriate amplitude spectrum estimation method in the vibration test. © 2020 IEEE.

关键词： Degrees of freedom (mechanics)

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Research on Operating system Runtime Jitter control Method for Electromagnetic Transient Real time Simulation Calculation

Research on Operating System Runtime Jitter Control Method f...

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Computer Technology and Information Science (ISCTIS), International Symposium on

作者： Qi Guo Tianyu Guo Yuanhong Lu Haiping Guo Libin Huang Liang Tu State Key Laboratory of HVDC Electric Power Research Institute China Southern Power Grid Guangzhou China Guangdong Provincial Key Laboratory of Intelligent Operation Control for New Energy Power System Guangzhou China CSG Key Laboratory for Power System Simulation Electric Power Research Institute China Southern Power Grid Guangzhou China

Real-time electromagnetic transient simulation can quickly analyze and solve the problems in complex large-scale power systems, realize accurate prediction and diagnosis of faults, and is a necessary means to promote the implementation of new power systems. However, the real-time simulation of electromagnetic transient puts forward strict requirements for the real-time performance of the underlying operating system. In this paper, the test method of system runtime jitter on Linux platform is designed, and the causes of jitter are analyzed based on the test results, and the control method of runtime jitter is studied. The experimental results show that the jitter of the system can be controlled in nanosecond level after using the methods of interrupt shutdown, CPU core binding and configuration of NOHZ_FULL, which can meet the needs of real-time simulation of electromagnetic transient.

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Nonlinear Optimal control Method for DC/DC Converters in DC Microgrid Based on the Differential Geometry Theory

Nonlinear Optimal Control Method for DC/DC Converters in DC ...

引用

IEEE Information Technology and Mechatronics Engineering Conference (ITOEC)

作者： Tianyu Guo Haiping Guo Liang Tu Libin Huang Yuanhong Lu State Key Laboratory of HVDC Electric Power Research Institute China Southern Power Grid Guangzhou China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangzhou China CSG Key Laboratory for Power System Simulation Electric Power Research Institute China Southern Power Grid Guangzhou China

The DC/DC converter in the DC microgrid is the core device that supports the efficient grid connection of power electronic drive devices such as new energy generation units and energy storage devices. In view of this, this paper proposes a nonlinear optimal control method for DC/DC converters based on differential geometry theory, aiming at the nonlinear characteristics of the mathematical model of the converter. First, the topology structure of the DC microgrid is analyzed, and the mathematical model of the DC/DC converter is established; Secondly, the basic principle of power system nonlinear control based on differential geometry theory is discussed, and the nonlinear optimal controller for DC/DC converter is designed based on the accurate linearization method in differential geometry theory to quickly suppress power disturbance and realize the efficient grid connection application of power electronic drive equipment. Finally, the correctness and effectiveness of the proposed nonlinear optimal method were verified based on MATLAB/simulink.

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Research on Back-to-Back HVDC Additional Frequency Synchronous control Strategy Applied to Asynchronous Interconnected systems

Research on Back-to-Back HVDC Additional Frequency Synchrono...

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Sustainable power and Energy Conference (iSPEC)

作者： Qinlei Chen Libin Huang Shuyong Li Xuehua Lin Wencong Wu Mingkang Wu Liang Tu Qi Guo CSG Key Laboratory for Power System Simulation Electric Power Research Institute China Southern Power Grid Guangzhou China State Key Laboratory of HVDC China Southern Power Grid Guangzhou China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System China Southern Power Grid Guangzhou China

When regional power grid is asynchronized by high voltage direct current (HVDC) systems, the division of frequency regulation resources and reserve capacity weakens the system’s ability to resist load fluctuation and fault disturbance. With the continuous promotion of electricity market construction in China, the demand of building a unified frequency regulation auxiliary market for the whole power grid is increasingly frequent. In this paper, with the objectives of improving the overall frequency regulation performance of asynchronous interconnected systems and refers to the power transmission characteristics of AC transmission lines. The additional frequency synchronous control (AFSC) strategy of back-to-back HVDC was studied, which enables back-to-back HVDC to automatically adjust the transmission power based on the frequency difference on both sides. Then, taking Luxi back-to-back HVDC of China Southern power Grid (CSG) as an example, the specific implementation of AFSC strategy is studied, and the effectiveness of the proposed strategy is verified by real-time simulation. Finally, the on-site practical application of this strategy was analyzed.

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