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research on Power Electronics Converter real-time Simulation Modeling Method Based on SILdP

Research on Power Electronics Converter Real-time Simulation...

引用

Power Science and Technology (ICPST), IEEE International Conference on

作者： Jin Liu Pengbo Han Zeqi Hong Hui Luo Siyang An Shujun Yao School of Electrical and Electronic Engineering North China Electric Power University Beijing China State Key Laboratory of HVDC Electric Power Research Institute China Southern Power Grid National Energy Power Grid Technology R&D Centre Guangzhou China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangzhou China

ISBN: (数字)9798350349030

ISBN: (纸本)9798350349047

Generally, detailed model of power electronics converter is used in electromagnetic transient simulations. It will use large sources of hardware in FPGA and the speed of simulation is slow. This paper is focus on the modeling method of real-time simulation, and proposed a new model of converter which based on the semi-implicit latency decoupling and paralleling (SILdP) technology. According to the proposed model, the SILdP model of voltage source converter(VSC) is build up. Base on the comparative between the SILdP VSC model and the simulation result waveform of PSCAd model, give the verification that the accuracy and effectiveness of the proposed SILdP VSC model. Finally, the SILdP VSC model is finished the verification in the FPGA experiment platform.

关键词： Accuracy Computational modeling Simulation Voltage Mathematical models real-time systems Numerical models

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Large-scale non-real-time Simulation Platform for Power systems Based on Cloud Computing

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

引用

Energy, Power and Electrical Engineering (EPEE), International Conference on

作者： Jingyue Zhang Yuanhong Lu Yufeng Hu Jie Zhang Haiping Guo Libin Huang 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 China Southern Power Grid State Key Laboratory of HVDC Electric Power Research Institute Guangzhou China

ISBN: (数字)9798331518066

ISBN: (纸本)9798331518073

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.

关键词： Cloud computing Scalability Power system management decision making Computer architecture Parallel processing data processing Computational efficiency Smart grids reliability

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Mathematical Modeling of the Impact of a 5 day Interim relaxation at 21 days in 42 days Lockdown Strategy on COVId-19 Transmission in India

Mathematical Modeling of the Impact of a 5 Day Interim Relax...

引用

International Conference on Biosignals, Images and Instrumentation (ICBSII)

作者： Flavia Immaculyne BakiyaAmbikapathy Kamalanand Krishnamurthy Lourduraj de Britto Schlumberger- Reda Production System Benoi Cresent Singapore Department of Electronics and Communication Engineering Vel Tech Rangarajan Dr Sagunthala R&D Institute of Science and Technology Chennai India Department of Instrumentation Engineering MIT Campus Anna University Chennai India Indian Council of Medical Research Vector Control Research Centre Puducherry India

ISBN: (数字)9798350350951

ISBN: (纸本)9798350350968

As of the first week of May 2020, the COVId-19 pandemic is present in 212 nations globally. Many countries have enforced lockdown measures strategically to slow down the epidemic's spread, with the objective of relieving pressure on healthcare systems. Mathematical modelling serves as a useful tool for the prediction of the future numbers of the infected population and for analyzing the effects of various intervention strategies. In this work, a mathematical model based on ordinary differential equations has been developed for analyzing the impact of an interim relaxation of 5 days at 21 days in a 42 days lockdown period. results of the simulation demonstrate that the relaxation of 5 days during the 42 days lockdown does not result in any adverse effects if the transmission rate remains the same. However, the model-based analysis suggests that an increase in the transmission rate by a factor of 1.2 times during the relaxation period due to the possible aggregation of the susceptible with the infected, it could shift the growth pattern of infected cases from sub-exponential to exponential.

关键词： COVId-19 Analytical models Biological system modeling Sociology Predictive models Ordinary differential equations routing

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Adaptive Frequency regulation control Method for Wind Turbines Based on Grid Frequency regulation demand

Adaptive Frequency Regulation Control Method for Wind Turbin...

引用

Energy, Electrical and Power Engineering (CEEPE), International Conference on

作者： Xin Zhou Junzhen Peng Fan Xie Li Zhang Yihua Zhu Chao Luo Yunnan Power Grid Co.. Ltd. Electric Power Research Institute Kunming China State Key Laboratory of HVDC Electric Power Research Institute China Southern Power Grid Guangzhou China National Energy Power Grid Technology R&D Centre Guangzhou China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangzhou China

ISBN: (数字)9798331521844

ISBN: (纸本)9798331521851

As renewable energy usage rises, the power system's inertia and frequency regulation capacity decline, affecting frequency security and stability. Incorporating renewable energy sources into power system frequency regulation is vital for enhancing system frequency characteristics. However, the current design of renewable energy frequency regulation control methods mainly aims to improve its frequency regulation performance, which is challenging when adapting to the diversified needs of the grid. In this paper, based on the analysis of the generic frequency regulation control for wind turbines (WTs), the system frequency response (SFr) model of the power system considering wind turbine frequency regulation is established. Subsequently, an adaptive frequency regulation control method for WTs that comprehensively evaluates the typical grid operation scenarios, typical power disturbances and multiple frequency characteristic indicators is proposed. Simulation verification conducted on the Simulink platform confirms that the method proposed in this paper enables adaptive regulation of various frequency control parameters of wind turbines according to grid frequency demands. This ensures system frequency security while considering economic factors.

关键词： renewable energy sources Analytical models Adaptation models Software packages Simulation Power system stability Stability analysis Wind turbines Security Frequency control

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Overall Parameter Identification Method for Photovoltaic Inverters Based on Low Voltage ride-Through Characteristics

Overall Parameter Identification Method for Photovoltaic Inv...

引用

Energy, Electrical and Power Engineering (CEEPE), International Conference on

作者： Fan Xie Yihua Zhu Xin Zhou Junzhen Peng Chao Luo Li Zhang State Key Laboratory of HVDC Electric Power Research Institute China Southern Power Grid Guangzhou China National Energy Power Grid Technology R&D Centre Guangzhou China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangzhou China Yunnan Power Grid Co.. Ltd. Electric Power Research Institute Kunming China

ISBN: (数字)9798331521844

ISBN: (纸本)9798331521851

To accurately construct the low-voltage ride-through control for the photovoltaic electromagnetic transient model, this study proposes an overall inverter parameter identification method based on low-voltage ride-through (LVrT) characteristics. First, based on the typical inverter control structure, the control modes and their corresponding control parameters for different voltage sag levels are clarified. Then, using the measured active and reactive currents, the control parameters for the inner and outer loop controllers are identified via the differential Evolution (dE) algorithm. The command parameters of the control strategy are identified using multivariable linear regression based on the least squares method. Finally, a photovoltaic electromagnetic transient model is constructed on the MATLAB/Simulink simulation platform, and the effectiveness of the proposed identification method is validated through a comparative analysis with measured data.

关键词： Photovoltaic systems Low voltage Parameter estimation Software packages Power quality Linear regression Power system stability Inverters Mathematical models data models

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Aggregate Equivalent Modeling of Wind Farm under Full Wind Speed Scenarios

Aggregate Equivalent Modeling of Wind Farm under Full Wind S...

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Energy, Electrical and Power Engineering (CEEPE), International Conference on

作者： Xin Zhou Junzhen Peng Jinling Qi Li Zhang Yihua Zhu Chao Luo Yunnan Power Grid Co.. Ltd. Electric Power Research Institute Kunming China State Key Laboratory of HVDC Electric Power Research Institute China Southern Power Grid Guangzhou China National Energy Power Grid Technology R&D Centre Guangzhou China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangzhou China

ISBN: (数字)9798331521844

ISBN: (纸本)9798331521851

Currently, real-time collection of operational data at the individual wind farm unit level for equivalent modeling is not feasible within the existing power grid infrastructure. Hence, this paper introduces a methodology for wind farm aggregation equivalent modeling under full wind speed scenarios. Initially, a year's worth of operational data from wind farm units is gathered, and the Fuzzy C-means (FCM) clustering technique is applied. This facilitates the extraction of typical wind farm operational scenarios by clustering unit wind speed data over the entire year. Subsequently, a four-machine clustering approach is employed to categorize these typical operational scenarios, resulting in various unit groupings. Following this, distinct multi-machine equivalent models are developed for different scenarios arising from diverse group combinations. A typical fault simulation is conducted to determine the equivalent error associated with various unit groupings, selecting the group combination with the minimal error as the optimal clustering strategy. Lastly, by integrating the parameters calculation for equivalent wind turbines and collector networks, the aggregate equivalent modeling of the wind farm is formed. The model's effectiveness is validated using data from an actual wind farm.

关键词： Power engineering Wind speed Aggregates Clustering methods Wind farms data models real-time systems Power grids Wind turbines data mining

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Assessing Automotive Bumper Materials: A Comparative Study on Attenuation at 77GHz

Assessing Automotive Bumper Materials: A Comparative Study o...

引用

USNC-UrSI radio Science Meeting (Joint with AP-S Symposium)

作者： Michael Neubauer david Petanjek Michael Hirschmugl Helge Kiebach Saeid Karamzadeh Millimeter Wave Technologies Silicon Austria Labs Intelligent Wireless System Linz Austria R&D Automotive Measurements AVL DiTEST GmbH Graz Austria KTI Kraftfahrzeugtechnisches Institut und Karosseriewerkstätte GmbH & Co. KG Lohfelden Germany Electrical and Electronics Engineering Department Bahçeşehir University Istanbul Turkey

ISBN: (数字)9789463968119

ISBN: (纸本)9798350359497

Having information about the materials surrounding the radar sensors is essential in the automotive sector, in order to guarantee good functionality of the sensor. Since automotive man-ufacturers also start integrating radar sensors behind bumpers, it is essential to know the characteristics of the materials used in bumpers and how a repair of a bumper would alter those characteristics. This paper shows, how the damping characteristics of different samples were measured at 77GHz using a scalar measurement setup and compares the attenuation for different types of paints and modifications.

关键词： Industries radar measurements radar Sensor phenomena and characterization Attenuation measurement Maintenance engineering Attenuation

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A Novel Energy-Type SVG with Grid Forming control for Grid Voltage and Inertial Support

A Novel Energy-Type SVG with Grid Forming Control for Grid V...

引用

IEEE International Symposium on Power Electronics for distributed Generation systems (PEdG)

作者： Jiawei Zhang Chen Zhang Xianqiang Shi Lei Huang Xiaobing Li Xu Cai Key Laboratory of Control of Power Transmission and Conversion Shanghai Jiao Tong Unviersity Shanghai China Power System Analysis Department Sieyuan Electric Co. Ltd Shanghai China R&D Center Sieyuan Electric Co. Ltd Shanghai China

Large scale renewable power plants (e.g., wind farms) are typically equipped with the cascaded H-bridge based Static Var Generator (SVG) for voltage regulation of the Point of Common Coupling (PCC). To enhance its capability in gridfriendly integration and operation of renewable power plants, this paper proposed an energy-type Static-var-generator (ESVG) with grid forming (GFM) control characteristics. First, the energy type SVG's converter typology is presented, then a new type of grid forming control utilizing the distributed energy of SVG's dc capacitor is proposed, having two main characteristics: 1) it achieves autonomous frequency response and grid voltage support similar to the majority of GFM controls; 2) it has the self dc-voltage balancing capability, which does not require additional energy management control. The state-space model is also built to assess the small-signal stability of the ESVG system. Finally, an electromagnetic transient (EMT) simulation model of a typical grid-tied ESVG system is constructed in Matlab/Simulink, and simulation results show that the proposed control methods and associated characteristics are valid.

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Unified Grid-Forming control for MMC-MTdC systems with renewable Power Integration

Unified Grid-Forming Control for MMC-MTDC Systems with Renew...

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HVdC (HVdC), International Conference on

作者： renxin Yang Haiqing Cai Mingzhang Su Haohan Gu Zhihao Chen Xu Cai Key Laboratory of Control of Power Transmission and Conversion Shanghai Jiao Tong University Shanghai China State Key Laboratory of HVDC Electric Power Research Institute China Southern Power Grid Guangzhou China National Energy Power Grid Technology R&D Centre 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

ISBN: (数字)9798350387759

ISBN: (纸本)9798350387766

Using modular multilevel converter-based multi-terminal high voltage direct current (MMC-MTdC) transmission to integrate large-scale renewable power into the main power grid is an important development trend in China. To cope with the stability issues under weak grid conditions, different grid-forming control strategies have been proposed for the MMC in MTdC transmission systems. These control strategies have different structures due to different control targets and are difficult to unify. To solve this problem, a novel grid-forming control structure is proposed in this paper. The MMC emulates the synchronous generator (SG), and the submodule capacitor voltage emulates the SG rotor speed. On this basis, by utilizing the modulation control degree freedom, a unified dC-side controller is proposed to realize different control targets. Finally, the simulation model of a 4-terminal MMC-MTdC transmission system with renewable power integration is established in the PSCAd/EMTdC. The effectiveness of the proposed strategy is verified by the simulation results.

关键词： renewable energy sources Simulation HVdC transmission Capacitors rotors Switches control systems Synchronous generators Stability analysis Grid forming

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Simulation Testing of Large-Scale Grid-Connected Wind Power with Energy Storage system Based on Active Support Performance Evaluation Indices

Simulation Testing of Large-Scale Grid-Connected Wind Power ...

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Electrical Engineering and Automation (IFEEA), International Forum on

作者： Yihua Zhu Yun Hu Liang Tu Mingzhang Su Chao Luo State Key Laboratory of HVDC Electric Power Research Institute CSG Guangzhou China National Energy Power Grid Technology R&D Centre 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

This paper establishes simulation modeling for large-scale grid connected wind power with energy storage system (ESS). The conventional grid-following (GFL) based ESS is used as a reference object to test the active support performance of large-scale grid-connected wind power with grid-forming (GFM) based ESS with active support performance evaluation indices in different scenarios. (1) Small disturbance evaluation indices: The point of common coupling (PCC) frequency/voltage drop depth and recovery time. (2) Large disturbance evaluation indices: The PCC frequency/voltage drop depth and rise height after fault removal. The output active/reactive power drop depth and rise height/recovery time after fault removal. (3) Island capability evaluation indices: The PCC frequency/voltage fluctuation amplitude at the moment of switching and system stability after switching.

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