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The Method of for Analyzing EMI Conducted Noise Analysis in power Conversion Devices using Partial Element Equivalent Circuit Modeling

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Transactions of the Korean Institute of Electrical Engineers 2023年第7期72卷 809-819页

作者： Seo, Hyun-Woo Kim, Rae-Young Dept. of Electrical Engineering Hanyang University Korea Republic of Dept. of Energy Power Electronics Control System Lab Hanyang University Korea Republic of

EMI conducted noise is becoming increasingly important in power conversion systems, and various analysis methods are being researched. The proposed method enables accurate EMI conducted noise analysis by extracting partial element equivalent circuits from the 3D structure of power cables and PCBs, and the extracted model can be interpreted in SPICE simulations. The implemented inverter operation mode of Totem-Pole bridge-less PFC in the EMI conducted noise analysis simulation model shows a good correlation between simulation results and experimental results in all CE bands. Furthermore, this method identifies the main causes of EMI noise through CM (Common Mode) and DM (Differential Mode) noise analysis, and proposes a method to effectively attenuate EMI noise through CM coil modeling. Therefore, the EMI conduction noise analysis method using simulation models allows for efficient prediction of EMI conduction noise in advance. Copyright The Korean Institute of Electrical Engineers.

关键词： Poles

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Improvement of Corrective Agents Dispensing control Systems for Thermal power Plants

Improvement of Corrective Agents Dispensing Control Systems ...

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2024 International Ural Conference on Electrical power engineering, UralCon 2024

作者： Merzlikina, Elena Lozbicheva, Polina Sydykov, Aktan National Research University Dept. of Automated Control Systems for Thermal Power Plants Moscow Power Engineering Institute Moscow Russia National Research University Dept. of Atuomated Control Systems for Thermal Power Plants Moscow Power Engineering Institute Moscow Russia

ISBN: (纸本)9798350386028

The paper is devoted to corrective agents dispensing control systems for thermal power plants, namely, hydrazine dispensing control system and phosphates dispensing control system. The systems mentioned are single-loop systems with PI-algorithms and they do not work efficiently enough now. Traditional variants of these system and their improvements earlier offered are described. Some new improvements, are offered and analyzed. They are prediction module using and control algorithm tuning parameters optimization. The prediction module uses the linear prediction algorithm. The transient processes and Nyquist curves for the control systems are given and analyzed. The quality indexes for the control systems are calculated. All the calculations are based on experimental data given in the papers already published. © 2024 IEEE.

关键词： Predictive control systems

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Cable Conductance Estimation Method Based on Reflectometry

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Transactions of the Korean Institute of Electrical Engineers 2024年第12期73卷 2444-2448页

作者： Choe, Jin-Wook Lee, Chun-Kwon Dept. of Control and Instrumentation Engineering Pukyong National University Korea Republic of Power Cable Research Center Korea Electrotechnology Research Institute Korea Republic of

This paper proposes a optimization method for estimating the conductance of cable insulation, a parameter closely related to the dielectric losses and overall health of the cable. The proposed method utilizes a stepped frequency waveform reflectometry technique, which injects a frequency range of sinusoidal signals into the cable and analyzes the reflected signals to assess the attenuation and phase shift caused by the cable's physical and electrical properties. By optimizing the conductance based on the measured reflection coefficients and applying the Levenberg-Marquardt algorithm to minimize errors, the method accurately estimates the internal conductance of the cable's insulation layer. The ability to quantitatively assess and monitor conductance over time provides a valuable tool for early detection of insulation degradation and prediction of remaining cable life. Copyright © The Korean Institute of Electrical Engineers.

关键词： Dielectric losses

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Modelling of control System with Auto-Tuning Module in SimInTech 7

Modelling of Control System with Auto-Tuning Module in SimIn...

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7th International Conference on Information Technologies in engineering Education, Inforino 2024

作者： Merzlikina, Elena Moiseeva, Anastasiya Moscow Power Engineering Institute National Research University Dept. of Automated Control Systems for Thermal Processes Moscow Russia

ISBN: (纸本)9798350371369

This paper considers computer modelling of a single-loop linear control system with an auto-tuning module. A short review of the modelling software is given, the advantages of SimInTech are shown. The modelling is carried out in SimInTech using the tool called the package of project, that contains several projects which have a common data base containing all the variables. The control system under consideration, the control plant identification method and the project of the package are described. The control plant model is the second order transfer function with a time delay, the control algorithm is PID. An example for testing the package is given and analysed. © 2024 IEEE.

关键词： Transfer functions

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Deep Learning-Based Optimal Switch Placement in Smart power Distribution Systems

Deep Learning-Based Optimal Switch Placement in Smart Power ...

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2023 IEEE International Conference on Environment and Electrical engineering and 2023 IEEE Industrial and Commercial power Systems Europe, EEEIC / I and CPS Europe 2023

作者： Rastegar, Mohammad Ebrahimi, Mehrdad Karami, Kiana Shiraz University Dept. of Power and Control Engineering Shiraz Iran Penn State Harrisburg Dept. of Electrical Engineering and Electrical Engineering Technology Pennsylvania United States

ISBN: (纸本)9798350347432

The reliability of power distribution systems plays a key role in enhancing the service quality of customers. To reach a reliable system, switching devices such as circuit breakers, remote-controlled switches, and manual switches should be optimally installed in power distribution systems. However, due to the nonlinearity of the problem, a large number of candidate installation points, the diversity of decision variables, and the existence of tie lines, traditional mathematical-based switch optimization models may not be practical for large-scale systems. To address this challenge, this paper proposes a novel approach based on deep learning techniques to determine the optimal number and location of switching devices in real-world power distribution systems. We employ an ensemble learning method along with explainable artificial intelligence tools to build an accurate surrogate model. The proposed learning-based method can provide a fast and effective solution to the optimal switch placement problem, without requiring complicated mathematical optimization algorithms. The proposed method is tested on a modified 11 kV power distribution system connected to Bus 4 of the Roy Billiton test system (RBTS-Bus 4). Simulation results demonstrate that the proposed surrogate model outperforms traditional mathematical-based switch optimization models in terms of scalability and computational complexity. © 2023 IEEE.

关键词： Optimization

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Black-Start Using Battery Storage and Wind Turbines 6

Black-Start Using Battery Storage and Wind Turbines

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6th International Conference on Energy, Electrical and power engineering, CEEPE 2023

作者： Pan, Zhongmei Kong, Lingyuan Jenkins, Nick Tong, Xiangqian Xi'An University of Technology Dept. of Power Grid Information and Control Engineering Xi'an China Cardiff University Dept. of Electrical Engineering Cardiff United Kingdom

ISBN: (纸本)9798350348279

This paper discusses a black-start restoration control strategy using a battery energy storage station together with wind farms. The wind farm operates with the maximum power tracking control method, and the energy storage station adopts the V/ f control method to jointly act as the black-start resources. Soft energization is used to eliminate transformer inrush currents. A restoration sequence is designed to mitigate the transient impact by picking up critical load before connecting the wind turbines. The amount of the critical load is estimated considering the capacity and the state of charge of the energy storage station based on wind power prediction. Simulations are carried out in PSCAD/EMTDC to verify the effectiveness of the described strategy. © 2023 IEEE.

关键词： Secondary batteries

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Synthesis of Model Predictive control for an Electrohydraulic Servo System Using Orthonormal Functions 5

Synthesis of Model Predictive Control for an Electrohydrauli...

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5th IEEE International Conference on Communications, Information, Electronic and Energy Systems, CIEES 2024

作者： Mihalev, Georgi Yordanov, Stanimir Ormandzhiev, Krasimir Stoycheva, Hristina Todorov, Todor Technical University of Gabrovo Dept. of Automation Information and Control Systems Gabrovo Bulgaria Technical University of Gabrovo Dept. of Power Engineering Gabrovo Bulgaria Technical University of Gabrovo Dept. of Comunication Technique and Technologies Gabrovo Bulgaria

ISBN: (纸本)9798350352863

The paper presents the implementation of a Continuous-Time Model Predictive control (CMPC) regulator for controlling an electrohydraulic servo system. The control object is a test bench consisting of three modules and a PC-based data acquisition and control system. The system is modeled in state-space form, accounting for parametric uncertainties. The synthesis of the model predictive controller is performed by approximating the control signal using Laguerre orthonormal functions. The article includes mathematical formulas and relationships that illustrate the modeling approach. Simulations and robust analysis of the closed-loop system are conducted. Through a real-time control system, experimental data and graphs are obtained, demonstrating the performance and optimality of the synthesized control strategy. © 2024 IEEE.

关键词： Model predictive control

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Process-Model-Free Design of MPC via a Reference-Model-Based PI controller for the Gas Turbine 9

Process-Model-Free Design of MPC via a Reference-Model-Based...

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9th International Conference on Electrical engineering, control and Robotics, EECR 2023

作者： Shi, Gengjin Dai, Chengbo Ma, Miaomiao Li, Donghai Ding, Yanjun Tsinghua University State Key Lab of Power Systems Dept. of Energy & Power Engineering Beijing China North China Electric Power University School of Control & Computer Engineering Beijing China

ISBN: (纸本)9781665491204

Model predictive control (MPC) is a modern advanced control strategy which has great reputation because of its excellent reference tracking performance and the ability to deal with process constraints, time delay and multivariable problems. However, the gas turbine is difficult to model accurately and unmeasurable disturbances are unavoidable, which limits the application of MPC to the gas turbine. To solve these problems, a process-model-free design method for MPC via a reference-model (RM)-based proportional-integral (PI) controller-desired dynamic equational (DDE)-PI controller (MPC-DDE) is proposed in this paper. The DDE-PI provides the design model for the MPC and handle with unmeasurable disturbances while MPC provides a rolling optimized set point for DDE-PI. Simulation results illustrate the superiorities of the proposed hierarchical control strategy in reference tracking, disturbance rejection and robustness, which indicates the promising prospect of practical application of MPC-DDE to the gas turbine. © 2023 IEEE.

关键词： Model predictive control

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Implementation of Predictive control System with PID-Algorithm and Autotuning Module Using Owen PLC

Implementation of Predictive Control System with PID-Algorit...

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2023 International Conference on Industrial engineering, Applications and Manufacturing, ICIEAM 2023

作者： Merzlikina, Elena Sviridov, Georgiy Farafonov, Georgiy Moscow Power Engineering Institute National Research University Dept. of Automated Control Systems for Thermal Processes Moscow Russia

ISBN: (纸本)9781665475952

This paper considers in general the problem of control system performance improvement, and, particularly, using predictive control systems. Various ways of improvement are described and the predictive system is considered in detail. This system is implemented in a laboratory workbench equipped with a physical model of an electric heater and a modern PLC. The system consists of a PID-algorithm, a prediction module and an auto-tuning module. The prediction algorithm is linear. The auto-tuning module allows to refresh the plant model and to re- tune the PID-algorithm if necessary. The possibility to implement the control system described using a modern PLC is estimated and the performance of this system is analyzed. Influence of the prediction time value is analyzed and recommendation on the prediction time value selection is given. © 2023 IEEE.

关键词： Forecasting

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Research on Volt-Var control Curve Suitability considering DER Transformer Tap

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Transactions of the Korean Institute of Electrical Engineers 2022年第10期71卷 1358-1367页

作者： Kim, Hyeonjin Jo, Jongmin Baek, Ja-Hyun Kim, Dongsub Dept. of Electrical and Control Engineering Mokpo National University Korea Republic of Korea Electric Power Corporation Research Institute Korea Republic of

This paper studies and proposes the Volt-Var control curve considering DER(Distributed Energy Resources) transformer voltage tap. As DER is increasing around the world, DER is required to have a system support function for power system stability. Recently, even in Korea, the power system support function is required for the DER. In particular, the Volt-Var reactive power function will be used to solve the overvoltage problem caused by the increase in generation of DER in distribution system. DER in the domestic distribution system uses a transformer to connect into the distribution system, and the transformer voltage tap is set differently depending on the system situation. Therefore, this paper analyzes the suitability of the Volt-Var control curve in the domestic system by considering the transformer voltage tap, and suggests a method for setting the Volt-Var control curve suitable for the domestic system. © The Korean Institute of Electrical Engineers.

关键词： Energy resources

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