A5089960051- Power Quality and Harmonics
- Microgrid Control and Optimization
- Magnetic Properties and Applications
- Optimal Power Flow Distribution
- Electromagnetic Compatibility and Noise Suppression
- Advanced Electrical Measurement Techniques
- Power Transformer Diagnostics and Insulation
- Machine Fault Diagnosis Techniques
- Energy Load and Power Forecasting
- Smart Grid Energy Management
- Electric Power System Optimization
- Real-time simulation and control systems
- Power System Optimization and Stability
- Power System Reliability and Maintenance
- HVDC Systems and Fault Protection
- Solar Radiation and Photovoltaics
- Photovoltaic System Optimization Techniques
- Power Systems and Renewable Energy
- Multilevel Inverters and Converters
- Islanding Detection in Power Systems
- Lightning and Electromagnetic Phenomena
- Wind Turbine Control Systems
- Grey System Theory Applications
- Power Line Communications and Noise
- Power Systems Fault Detection
National Chung Cheng University
2016-2025
Master's College
2024
Toronto Metropolitan University
2024
Sciencetech (Canada)
2024
Institute of Electrical and Electronics Engineers
2007-2021
Northwestern University
2011-2015
Qualcomm (United States)
2014
University of British Columbia
2010
Universidad Michoacana de San Nicolás de Hidalgo
2008
DEVCOM Army Research Laboratory
2004
This letter presents an improved backward/ forward sweep algorithm for three-phase load-flow analysis of radial distribution systems. In the backward sweep, Kirchhoff's Current Law and Voltage are used to calculate upstream bus voltage each line or a transformer branch. Then, linear proportional principle is adopted find ratios real imaginary components specified those calculated at substation bus. downstream then updated by multiplying with corresponding ratio. The procedure stops after...
This paper presents three harmonic simulation test systems. The purpose is to demonstrate guidelines for the preparation and analysis of problems through case studies examples. systems can also be used as benchmark development new methods evaluation existing software.
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> Some of the most remarkable issues related to interharmonic theory and modeling are presented. Starting from basic definitions concepts, attention is first devoted sources. Then, assessment considered with particular problem frequency resolution computational burden associated analysis periodic steady-state waveforms. Finally, different kinds sources extension classical models developed for power...
This paper describes experiences with mixed integer linear programming (MILP) based approaches on the short-term hydro scheduling (STHS) function. The STHS is used to determine optimal or near-optimal schedules for dispatchable units in a hydro-dominant system user-definable study period at each time step while respecting all and hydraulic constraints. problem can be modeled detail that contains both conventional pumped-storage units. Discrete dynamic constraints such as unit...
This paper describes experiences with mixed integer linear programming (MILP)-based approaches on the short-term hydro scheduling (STHS) function. The STHS is used to determine optimal or near-optimal schedules for dispatchable units in a hydro-dominant system user-definable study period at each time step while respecting all and hydraulic constraints. problem can be modeled detail that contains both conventional pumped-storage units. Discrete dynamic constraints such as unit...
The widespread application of power-electronic loads has led to increasing harmonic pollution in the supply system. In order prevent harmonics from deteriorating power quality, detecting components for mitigations becomes a critical issue. this paper, an effective procedure based on radial-basis-function neural network is proposed detect amplitudes measured signal. By comparing with several commonly used methods, it shown that solution yields more accurate results and requires less sampled...
Harmonics and interharmonics may introduce operational problems in electrical electronic equipment. Therefore, monitoring harmonics/interharmonics for improving the power quality is of importance both electric utilities their customers. In this paper, a cascaded two-stage adaptive linear element (ADALINE) structure harmonics measurement proposed. addition, simple laboratory setup implemented by MATLAB dedicated hardware measuring signals built to verify performance proposed method. Results...
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> The effective harmonics estimation for measuring power signals has become an important issue in the quality assessment. By reviewing those commonly used Kalman filter-based models, some limitations can be observed. In this paper extended real model of filter combined with a resetting mechanism accurately tracking time-varying harmonic components is presented. usefulness proposed algorithm...
This paper presents a review with concise description and analysis of the fundamentals, characteristics, analytical details, merits, drawbacks associated existing methods in frequency time domain for harmonic practical power networks. The are centered on developed domain, hybrid frequency-time respectively. Validation reviewed analysis, against one widely accepted digital simulators, such as EMTP, EMTDC, or MATLAB/SIMULINK, is reported cited individual contributions.
Generation output forecasting is a crucial task for planning and sizing of photovoltaic (PV) power plant. The purpose this paper to present an effective model day-ahead PV ofa plant based on deepbelief network (DBN) combined with gray theory-based data preprocessor (GTDBN), where the DBN attempts learn high-level abstractions in historical by utilizing hierarchical architectures. Test results obtained proposed are compared those other five methods including autoregressive integrated moving...
This paper presents a study for modeling harmonic currents injected by three-level pulse-width-modulated (PWM) converters of the high-speed railway traction drive in steady-state motoring mode. An analytical solution converter harmonics based on double Fourier series theory is described. The time-domain simulation results obtained use PSpice are then compared with those proposed model. It shown that determined according to model agree well using tool.
The fast Fourier transform (FFT) has been widely used for the signal processing because of its computational efficiency. Because spectral leakage and picket-fence effects associated with system fundamental frequency variation improperly selected sampling time window, a direct application FFT algorithm constant rate may lead to inaccurate results continuously measuring power harmonics interharmonics. An improved FFT-based measure interharmonics accurately is proposed. In proposed algorithm,...
The electromagnetic transient programs (EMTP-like tools) are based on the nodal (or modified nodal) equations that enable an efficient numerical solution and, subsequently, fast time-domain simulations. state-variable-based simulation programs, such as Simulink, also used for studying dynamics of electrical systems. Both offline and real-time versions these two types tools widely by researchers engineers in industry academia to study phenomena power systems with rotating machines. This paper...
This paper reviews the common practice and analytical models for representation of aggregate linear load in harmonic propagation distortion studies. Simulation results this demonstrate high sensitivity to model type used represent load. Comparison several literature shows a significant difference on system impedance around dominant resonance. The recommends comprehensive modeling approach that accounts all major components modern including electronic background distortion.
The shunt active power filter has proved to be a useful device eliminate harmonic currents and compensate reactive for linear/nonlinear loads. This paper presents novel approach determine reference compensation of the three-phase (APF) under distorted and/or imbalanced source voltages in steady state. proposed is compared with three reviewed APF strategies. Results obtained by simulations Matlab Simulink show that more effective than approaches on compensating harmonic/neutral load, even if...
This paper documents the modeling of harmonic sources with nonlinear voltage-current characteristics such as transformers, iron-core reactors, rotating machines, arc furnaces, energy efficient lightings, and some household electronic appliances. The generating these apparatus are reviewed. Different techniques summarized suggestions for use different models also provided whenever possible.
Frequency is an important indicator for the quality of electric power. Accurate spectral decompositions rely much on correct identification frequencies measured signals. An efficient procedure that includes a high-resolution Prony-based method in conjunction with downsampling technique harmonics and interharmonics detection power signal proposed this paper. It shown even when two or more closely adjacent lines are present, can precisely detect harmonic interharmonic components. The...
It is known that artificial neural network a powerful scheme for function learning and modeling nonlinear loads. However, direct application of time-varying loads may lead to inaccuracies. This paper presents an accurate neural-network-based method the highly voltage-current characteristic ac electric arc furnace (EAF). The model can be effectively used assess waveform distortions, voltage fluctuations, performances reactive power compensation devices associated with EAF in system....
The optimal planning for distributed generations (DGs) associated with photovoltaics (PVs) in the utility-owned distribution system is crucial increasing high penetration of renewables while against practical operation constraints. Such PV-DG categorized as a complicated mixed-integer nonlinear programming (MINLP) problem and extremely difficult to solve by using conventional methods. In recent years, several bio-inspired metaheuristic algorithms have been proposed tackle various...
Solar PV generation is widespread in the distribution system nowadays, and high-penetration brings challenges to reliable grid operation. Taiwan's government has set a policy goal of achieving 20% total electricity from renewable sources by 2025. However, intermittent unpredictable nature energy leads voltage deviation overvoltage buses. Nevertheless, increasing capacity feeders crucial 2025 target. This study employs stochastic analysis method simulate hosting accommodated feeder. The...
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> This paper presents a new method for planning single-tuned passive harmonic filters to control voltage distortion throughout power system. In the problem, probabilistic characteristics of source currents and network impedances in filter are taken into account. The objective is minimize total installation cost, while limits component constraints satisfied with predetermined confidence levels. To...
With the growing importance of power quality problems to electric utilities and customers, there is an increased focus on search for new tools techniques accurate analysis resolution such problems. This paper reviews currently available modeling simulation time-varying harmonics in real-time. Following a brief summary used off-line methods, principles system element representations using wave digital filter (WDF) discrete wavelet transform (DWT) methods are discussed. Hardware software...