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3rd international conference on Emerging Smart Technologies and Applications, eSmarTA 2023

作者： Abdurraqeeb, Akram M. Al-Shamma'a, Abdullrahman A. Alkuhayli, Abdulaziz Alsharabi, Khalil Aljalal, Majid Addoweesh, Khaled E. King Saud University Electrical Engineering Department Riyadh Saudi Arabia Electrical Engineering Department Riyadh Saudi Arabia

ISBN: (纸本)9798350305333

Constant power loads (CPLs) and additional disturbances such as constant voltage loads (CVLs) and input voltage changes can cause instability in a DC microgrid. In this article, an RST controller is proposed to address the instability induced by these discrepancies, increase robustness, and achieve high tracking performance for DC-DC boost converters feeding CPL and CVL in a DC microgrid. To create the proposed controller, first, identity the DC-DC boost converter's dynamic model system. Subsequently, a controller is designed and implemented for the system using the pole positioning and sensitivity function shaping methodologies. MATLAB simulations are used to validate the efficacy and resilience of the RST control. Where the findings reveal that the suggested control shows the ability to maintain stability, regulate the voltage of the DC bus, and accomplish the desired performances © 2023 IEEE.

关键词： controllers

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Customized deduplication algorithm for multi-source power grid dispatch data 3

Customized deduplication algorithm for multi-source power gr...

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3rd international conference on Electrical engineering and Mechatronics Technology, ICEEMT 2023

作者： Chen, Rui Zheng, Kaiwen Ai, Chuanxian Yao, Gang Chen, Jinglong Yang, Fu Guizhou Power Grid Co. Ltd Power Dispatch Control Center Guizhou Guiyang550002 China The National Computer Network Emergency Response Technical Team Coordination Center of China Yunnan Branch Yunnan Kunming650228 China

ISBN: (纸本)9798350303698

This paper proposes a self defined algorithm for multi source power grid dispatching data, which aims to solve the problem of redundancy and duplication of dispatching data in power systems. Firstly, by extracting features from power grid dispatch data, data between different data sources is uniformly formatted and compressed to reduce storage space. Then, a partial deduplication strategy is used to deduplicate the data from each data source. Finally, the experiment was conducted using the indicators of 'space compression rate and deduplication rate'. The experimental results show that this algorithm can effectively deduplicate multi-source power grid scheduling data, and has a high deduplication rate and spatial compression rate. © 2023 IEEE.

关键词： Digital storage

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Research on control system for improving the grid-connected efficiency of small hydropower

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ENERGY REPORTS 2023年 9卷 772-783页

作者： Hu, Xingyang Wang, Ting Chen, Kun Ye, Pangqi Zhang, Longen State Grid Hubei Elect Power Res Inst Wuhan 430077 Peoples R China

Aiming at the problem of low efficiency at low flow in small hydropower stations, a permanent magnet direct-drive hydropower generation control system based on dual PWM converters is proposed to realize wide-range variable-speed constant-frequency hydropower generation of hydraulic turbine units and improve the comprehensive power generation efficiency of small hydropower stations. In this control system, the hydraulic turbine is coaxially connected to the permanent magnet synchronous generator(PMSG) through the flywheel, and the power grid is connected by back-to-back dual PWM converters, and the bidirectional energy flow is realized by the voltage space vector pulse width modulation method. The generator-side converter controls the rotating speed of hydraulic turbine units and tracks the optimal speed point of the hydraulic turbine units in real time to realize the maximum power output of hydraulic turbine units. The grid-side converter adopts active power and reactive power decomposition control method to stabilize the DC bus voltage and provide the reactive power required by the grid. Finally, the effectiveness of the proposed control system was proved by comparative experiments in a 400V/200kW/428rpm small hydropower station. (c) 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://***/licenses/by-nc-nd/4.0/).

关键词： Small hydropower station Hydraulic turbine units Dual PWM converter Permanent magnet direct-drive hydropower generation Maximum power point tracking control

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Capacitor-Current PID Feedback control Method for Grid-Connected Inverter to Improve System Stability and Harmonic Rejection Ability 3

Capacitor-Current PID Feedback Control Method for Grid-Conne...

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3rd IEEE international conference on Power, Electronics and Computer Applications, ICPECA 2023

作者： Xie, Cui Wang, Jianze Xie, Jiakun Guo, Yue Liu, Xu School of Electrical Engineering & Automation Harbin Institute of Technology Harbin China

ISBN: (纸本)9781665472784

The wide variation of the grid impedance can easily cause system resonance or even system instability of LCL-type grid-connected inverter in weak grid, and the injected grid current is severely distorted due to grid voltage harmonics. To address this issue, a capacitor-current PID feedback control method is proposed in this paper to correct inverter system impedance. It makes the output impedance of inverter and the equivalent virtual impedance of the filter capacitor in parallel have a nonnegative real part within the Nyquist frequency, while increasing the inverter output impedance's low-frequency gain. Then, the design guideline for the parameters of capacitor-current PID feedback coefficient is given. The proposed method has the ability to significantly enhance system stability and harmonic suppression capability, simultaneously enhancing system robustness to variation in grid impedance. Finally, simulation results verify the effectiveness of the proposed method and parameter design. © 2023 IEEE.

关键词： System stability

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Design and control of Modular Multilevel Converter Integrated With Energy Consumption Circuit Used in Offshore Wind Power VSC-HVDC System 3

Design and Control of Modular Multilevel Converter Integrate...

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3rd international conference on Energy engineering and Power Systems, EEPS 2023

作者： Shi, Youjie Hu, Zhenkai Yang, Shuangfei Li, Yongqi Chen, Man Electric Power Research Institute China Southern Power Grid State Key Laboratory of Hvdc Guangzhou China Csg Pgc Power Storage Research Institute Guangzhou China

ISBN: (纸本)9798350313857

VSC-HVDC has become an attractive choice for the grid connection of large-scale offshore wind power generation system. The operation under receiving-end AC side short-circuit fault condition should be paid attention. The DC bus is prone to overvoltage due to the the excess energy accumulated on DC transmission line, affecting the safety and reliability of the whole system during the fault. In this paper, a novel topology of MMC integrated with energy consumption circuit is proposed, and the circuit design and control strategy are also introduced and analyzed. The added energy consumption circuit has a simple close-loop controller, and has little impacts on the original MMC operation and performance. Finally the accuracy of analysis and effectiveness of FRT control are verified by a MATLAB/Simulink model. © 2023 IEEE.

关键词： Energy utilization

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Real-Time Threat Detection in Critical Infrastructure with Machine Learning and Industrial control System Data 3

Real-Time Threat Detection in Critical Infrastructure with M...

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3rd international conference on Smart Generation Computing, Communication and Networking, SMART GENCON 2023

作者： Kumar, Atul Sharma, Ishu Chitkara University Institute of Engineering and Technology Chitkara University Punjab India

ISBN: (纸本)9798350319125

The present study introduces a framework for the detection of threats in critical infrastructure in real-time. This framework leverages the capabilities of machine learning and utilizes data from Industrial control Systems (ICS). In order to evaluate the accuracy of threat identification, we conducted a comparative analysis of three well-known machine learning models: Logistic Regression, Random Forest, and Knearest Neighbors. Our study specifically emphasized the importance of precision as a key parameter in this assessment. The results of our study indicate that Logistic Regression has higher performance compared to the other models, emerging as the most effective method for effectively identifying possible hazards in real-time ICS data. This study highlights the effectiveness of Logistic Regression in strengthening security protocols within vital infrastructure, presenting a hopeful resolution to protect against rising risks and weaknesses. © 2023 IEEE.

关键词： Cybersecurity K-nearest Neighbors Logistic Regression Malicious Server Attack Random Forest Security Server Hack Techniques Threat Detection

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FOIλD1-λ controller: An alternative to double-loop control schemes for integrating processes 3

FOIλD1-λ controller: An alternative to double-loop control...

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3rd IEEE international conference on Smart Technologies for Power, Energy and control, STPEC 2023

作者： Aryan, Pulakraj Raja, G. Lloyds Mehta, Utkal Indian Institute of Technology Roorkee Center for Sustainable Energy Roorkee India National Institute of Technology Patna Department of Electrical Engineering Patna India The University of the South Pacific Electrical and Electronics Engineering Fiji Suva Fiji

ISBN: (纸本)9798350304732

In this work, a tri-parametric non-integer controller is suggested as an alternative for double loop control schemes for controlling dynamics of higher order integrating type processes with dead time. The suggested tri-parametric controller provides a decent tradeoff of proportional-integral (PI) and proportional-derivative (PD) actions with lesser tunable parameters from its integer order double-loop counterparts. The complex root bound (CRB) method is used to investigate the stability zone, which distinctly offers the search-space of the suggested controller arguments for any integrating time-delayed systems, regardless of order. The optimized parameters are then found using an equilibrium optimizer based on the CRB and the integral squared-time error minimization objective. To establish the efficiency of the intended control scheme, a juxtaposition with other prevalent double-loop schemes based on several performance measures is offered. © 2023 IEEE.

关键词： Complex root bound Fractional-order controller Integrating processes Stablity Time delay

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Power Supply Path Search Method Based on Breadth-first Search 3

Power Supply Path Search Method Based on Breadth-first Searc...

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3rd international conference on New Energy and Power engineering, ICNEPE 2023

作者： Yang, Shuai Huang, Hongsheng Ma, Xingke Wu, Weihua Tu, Xuyuan Li, Suirong State Grid Zhejiang Electric Power Co. Ltd. Jiaxing Power Supply Company Zhejiang China Worui Electric Power Technology Company Zhejiang Province Hangzhou China

ISBN: (纸本)9798350393224

As the proportion of renewable energy increases, it becomes more and more difficult to control the stable operation of the power grid. The power supply path search of the load is very important to the operation of the power grid. In this paper, the breadth-first search method in graph theory is used to find a generated tree in the topology of the power grid. The load on any bus in the power grid can track its power supply path along the tree. It can provide some useful supplementary information for the operation and control of the power grid. The results of searched power supply path in IEEE-33 buses and IEEE-30 buses benchmark system verify the accuracy and effectiveness of the proposed method. © 2023 IEEE.

关键词： breadth-first search graph theory operation and control of power grid power supply path

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Path planning based on fuzzy-control Dynamic Window Approach 3

Path planning based on fuzzy-control Dynamic Window Approach

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3rd international conference on control and Intelligent robotics, ICCIR 2023

作者： Chen, Wantong Yang, Qianqian Chen, Min Li, Xiaoqiang Liu, Zhuo Tianjin Key Lab for Advanced Signal Processing Civil Aviation University of China Tianjin China School of Electronic Information and Automation Civil Aviation University of China Tianjin China Beijing Sky Aviation Co. Ltd China Sichuan Jiuzhou Aerocont Technologies Co. Ltd China

ISBN: (纸本)9781510671867

A method integrating rapidly-exploring random tree (RRT) and improved dynamic window approach (DWA) is proposed to realize obstacle avoidance of mobile robots in complex dynamic obstacle environments. Based on the known environment information, the global optimal safe path is generated using the improved RRT algorithm. To address the problem of too many invalid nodes in the expansion of the RRT algorithm, the efficiency of the algorithm is improved by introducing a bidirectional alternating search (BAS) strategy;the forward search tree and the backward search tree alternate searching paths with new nodes as the target nodes until the paths meet;and the redundant nodes in the paths are removed using path node filtering to shorten the path. Secondly, the DWA algorithm is used to track the improved RRT algorithm to plan the path. When unknown obstacles appear in the environment, the weights of the DWA algorithm evaluation function are dynamically adjusted by fuzzy control to avoid the obstacles and return to the original route in time. Finally, the simulation experiments verify that the proposed improved fusion algorithm in complex dynamic environment has short running time, small path cost, and always keeps a safe distance from the obstacles to ensure the optimal path is tracked while safely avoiding the dynamic obstacles. © 2023 SPIE.

关键词： Fuzzy control

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Energy management strategy of fuzzy logic control for fuel cell truck

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ENERGY REPORTS 2023年 9卷 247-255页

作者： Jin, Benchang Zhang, Liyan Chen, Qihong Fu, Zhichao Wuhan Univ Technol Sch Automat Wuhan 430070 Peoples R China Dongfeng Commercial Vehicle Tech Ctr Dept New Energy Dev Wuhan 430056 Peoples R China Wuhan Inst Marine Elect Prop Wuhan 430064 Peoples R China

This paper aims to address the problems of high consumption of hydrogen fuel for fuel cell hybrid electric trucks. Based on the data analysis of rule-based energy management experiments, this paper proposes a control method based on fuel cell compensation battery power, which is a fuzzy logic strategy based on real-time driver power demand and power cell SOC as input and fuel cell demand power as output. The results show that based on fuzzy logic controls, the hydrogen consumption of the fuel cell hybrid truck is reduced from 7.336 kg/10 cycles to 5.817 kg 10 cycles, a decrease of 24.8%. On the other hand, the change amplitude of the power battery SOC is reduced from 55% similar to 81% to 50% similar to 60%, a decrease of 20%. The fuzzy logic control strategy is fuel battery hybrid truck energy management provides a good reference for reducing consumption and SOC balance. (c) 2023 The Authors. Published by Elsevier Ltd. This is an open access article under theCCBY-NC-ND license (http://***/licenses/by-nc-nd/4.0/).

关键词： Fuel cell truck Rule-based Fuzzy logic Energy management

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