Ananwattanaporn, Santipont
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Ananwattanaporn, Santipont
Alternative Name
Ananwattanaporn, S.
Ananwattananporn, Santipont
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Email
santipont.an@kmitl.ac.th
21 results
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Item type:Publication, Classification of Capacitor Bank Switching Using Fuzzy Interference Systems in 230 kV Substation(2024-01-01); ; ; Lertwanitrot, PraikanokFlexible AC transmission systems are used for enhancing the stability, transmission efficiency, and reliability of AC grids. Additionally, the most cost-effective devices for compensating reactive power are Mechanically Switched Capacitors (MSCs). This study proposes a novel algorithm for detection and capacitor bank switching transient signals in MSC, to prevent the protective relay maloperation by these transients. The Discrete wavelet transform (DWT) is used for effective time-frequency analysis and detection of measured three-phase current signals. DWT extracts the detailed wavelet coefficients of current signals at levels 1 to 30. In addition, the fuzzy inference system (FIS) has been used to determine the type of switching transient. The proposed combination of FIS and DWT has been tested on 230 kV substation and the result demonstrated precision for the identification and classification of both transient signals in MSC with 88% accuracy rate. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Evaluation of Light-Emitting Diode Luminaire For Two-Lanes Roadway Lighting System(2024-01-01); Lighting systems for roadways are an important aspect of the transportation system in terms of safety and providing comfort for drivers. Conventional lighting systems use high-pressure sodium luminaires, which consume a lot of energy. This paper proposes an evaluation of roadway lighting using lightemitting diodes (LEDs) as luminaires. The paper uses a two-lane road as a case study and simulates the lighting parameters using DIALux software. The case study varies the wattage of the luminaires, pole distances, and pole arrangements, while keeping the pole specifications fixed. The parameters under consideration include illuminance, luminance, and uniformity on the road surface. Additionally, the results are compared with international criteria standards to confirm that the selected LED luminaires can provide the necessary lighting quality for road usage. The results show that LED luminaires can provide lighting quality within standard criteria. However, different pole arrangements require different levels of wattage and pole distances. Therefore, the selection of LEDs needs to match the design of pole distances and arrangements to provide sufficient roadway lighting. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Development and Testing of a High-Precision Current Transformer Terminal Inspection System(2026-01-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Reduction of Impact from Voltage Sags During Faults in Distribution System by Installing Neutral Grounding Resistor(2025-01-01); This research focuses on a small power producer operating a cogeneration power plant that utilizes natural gas as fuel to generate electricity. The plant, with a capacity of 90 MW, supplies both electricity and steam to industrial customers within a designated industrial zone. Power is delivered to four feeder industrial customers and the Electricity Generating Authority of Thailand (EGAT) at voltage levels of 115 kV and 22 kV. The five customers connected to Feeder 4 at 22 kV experienced voltage sags caused by short circuits in the distribution system. These sags had a significant impact on their production processes, as the machinery in their factories is interdependent and requires high-quality power to function properly. Certain machines, being highly sensitive to voltage fluctuations, stop operating if the voltage drops outside their acceptable range. This disrupts the production process, as the halted machinery must undergo recovery and restart procedures, which are time-consuming. Consequently, this downtime leads to delays and lost revenue opportunities for the affected customers. This issue is a significant concern for factories in industrial estates. Therefore, to address this problem, this research focuses on studying methods to mitigate the impact of voltage sags by installing a Neutral Grounding Resistor (NGR). The study simulates the distribution system during a single line to ground fault. This research examines the effects of voltage sags to inform the design of NGR installations, including investment and cost-effectiveness for resistances of 0, 6, 13, 19 and 26 ohms. Simultaneously, the study also investigates the potential for voltage swell in the distribution system due to the installation of the NGR. The study is conducted using MATLAB Simulink simulations. The findings suggest that installing an NGR with a resistance of 13 ohms is the optimal choice, offering optimal voltage sag, voltage swell, and fault current performance. The budget for the NGR installation by a contractor is approximately 1,000,000 THB, while the total cost for replacing the surge arresters in the system would be 135,000 THB. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, An Evaluation Study on Electric Appliance Characteristics and Load Patterns in Residential Buildings(2026-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Power quality analysis in light emitting diode lamps(2016-07-25); Lighting system plays an important role in every life to increase quality of life and working efficiency. As population increase, urban area has been grown rapidly resulted in increased energy consumption in every section including lighting system. With the current attention in energy and environment issue, many governments have set policy to increase energy efficiency. In lighting system, conventional luminaire with low energy efficiency has been replaced with newer technology with low energy consumption and high energy efficiency such as light emitting diode (LED). Today, LED luminaire has taken considerable proportion of market share; however, the main concern regarding changing conventional lamp toward LED is power quality. This paper aims to study power quality issue in term of generated harmonics from lighting system consisting of LED lamps. The result indicates that LED lamps generate significant amount of current harmonic and cause a distortion in waveform. Thus, it needs taking power quality issue into account before replacing or installing LED into lighting system. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Impact of Wind Power Generation Sizing on the Characteristic of Distribution System Under Fault Condition(2022-01-01); ; ; Songsukthawan, PanapongIn the recent decade, there has been a rising concern in energy consumption and environmental issues. This trend has shifted the electric authority to focus from fossil fuel to renewable energy. The distributed generation (DG) using a renewable energy source has been raising. The presence of DG can cause using renewable energy sources to cause a technical issue on system protection and operation. This paper aims to study the impact of different DG size installations on the distribution system in terms of the system characteristics. The study is done in both normal conditions and in cases of fault occurrence. The system using in this research is a 22-kV distribution system consists of Wind Power Generation as the DG connected into the distribution line that modeled after part of the Provincial Electricity Authority (PEA) in the northern part of Thailand. The simulation was done using PSCAD software. The result from simulation reveals the impact of DG on the distribution system characteristics in terms of significant change in the measured current and voltage signal. Thus, the analysis of the impact of DG on the system must be done to ensure the reliability of the power system. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Combining Fuzzy Logic and Discrete Wavelet Transform for Accurate Fault and Inrush Current Classification in High Voltage Capacitor Banks(2024-01-01); ; The high voltage capacitor bank is a critical component in substations, essential for maintaining power quality and system stability. However, these banks are susceptible to faults and inrush currents, posing significant operational challenges. This paper presents a method for accurately classifying fault and inrush currents in high voltage capacitor banks using Fuzzy Logic and Discrete Wavelet Transform (DWT). The DWT decomposes current waveforms into frequency components, enabling the extraction of features that characterize faults and inrush currents. These features are processed by a Fuzzy Inference System (FIS), which classifies the events based on predefined rules and membership functions. The integration of DWT and FIS provides a robust framework for distinguishing between different types of faults and inrush currents with high accuracy. Simulation results demonstrate the proposed method's efficacy, showing improved performance in classification accuracy and noise robustness compared to traditional techniques. This research enhances monitoring and protection systems in power networks, ensuring more reliable operation of high voltage capacitor banks. Implementing this method allows for better fault management and minimized downtime, leading to improved overall system efficiency and stability. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, An Approach for Voltage Drop Improvement in Distribution Line Using High-Voltage Capacitor Bank(2025-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Enhancing the Reliability and Efficiency of 115/22 kV Electrical Substations in Thailand: Design Principles and Operational Strategies(2026-01-01)