Ananwattanaporn, Santipont

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Ananwattanaporn, Santipont
Alternative Name
Ananwattanaporn, S.
Ananwattananporn, Santipont
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Email
santipont.an@kmitl.ac.th

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    Development and Testing of a High-Precision Current Transformer Terminal Inspection System
    (2026-01-01)
    Sripakarach, Panot
    ;
    Sreewirote, Bancha
    ;
    Songsukthawan, Panapong
    ;
    Ananwattanaporn, Santipont
    This paper presents the development and rigorous testing of an advanced current transformer (CT) terminal inspection system, signifying a major leap in electrical engineering diagnostics. Originating from the need to enhance the reliability and safety of electrical power systems, this system addresses the critical challenge of accurately identifying CT terminal conditions, which are fundamental for the proper functioning of protective relays and metering equipment. Utilizing state-of-the-art microcontroller and sensor technologies, the system precisely identifies the polarity and terminal configurations of CTs. A series of 20 trials were conducted on a varied selection of transformers, analyzing four crucial parameters: CT size and capacity, core material composition, turn ratio, and manufacturer-specific differences. The outcomes consistently highlighted the system’s superior diagnostic capabilities, accurately determining CT terminal conditions and polarity. The system’s design ensures efficient and safe operations, especially in complex and hazardous settings. These findings underscore the system’s reliability and robustness, indicating its potential as an indispensable tool for maintaining operational integrity and safety in various electrical applications. The successful development and validation of this system mark a notable advancement in the field, offering new avenues for enhanced diagnostics in electrical engineering.
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    An Evaluation Study on Electric Appliance Characteristics and Load Patterns in Residential Buildings
    (2026-01-01)
    Thongsuk, Surakit
    ;
    Songsukthawan, Panapong
    ;
    Ananwattanaporn, Santipont
    ;
    Sottiyaphai, Chayanut
    ;
    Ngaopitakkul, Atthapol
    Energy usage in residential buildings has been constantly increasing as work-from-home trends continue to maintain popularity. To improve energy efficiency, the load profile and electric appliances in households need to be established and analyzed. This study aims to evaluate the characteristics of electric appliances that are commonly used in residential buildings under various operating conditions. An experimental setup with household electric appliances was built, and power quality meters were installed to assess the patterns under various operating conditions. In addition, the usage patterns were used to construct the daily load profile and analyze the energy consumption in residential buildings. The results demonstrate that load patterns constructed from actual measurements can achieve an accurate depiction of energy usage in residential buildings. The obtained load profile can be used in load control to improve energy efficiency and the application of renewable energy in demand reduction.
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    Impact of Wind Power Generation Sizing on the Characteristic of Distribution System Under Fault Condition
    (2022-01-01)
    Yoomak, Suntiti
    ;
    Leelajindakrairerk, Monthon
    ;
    Ngaopitakkul, Atthapol
    ;
    Ananwattanaporn, Santipont
    ;
    Songsukthawan, Panapong
    In 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.
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    The Design and Evaluation of Nanogrid-Based Solar Photovoltaic Light-Emitting Diode Street Lighting Systems: A Techno-Economic and Voltage Drop Analysis for Secondary Roads in Thailand
    (2026-05-01)
    Bunjongjit, Sulee
    ;
    Wang, Hongyan
    ;
    Huang, Yansheng
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    Songsukthawan, Panapong
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    Yoomak, Suntiti
    Street lighting systems are essential for ensuring nighttime road safety and visibility. The integration of solar photovoltaic (PV) systems into street lighting infrastructure improves energy efficiency and sustainability; however, the mismatch between daytime energy generation and nighttime lighting demand requires effective energy management solutions. In addition, long-distance electrical connections introduce voltage drop constraints, which are often overlooked in conventional design approaches. This study addresses the integration of lighting design, electrical constraints, and techno-economic performance in nanogrid-based LED street lighting systems for secondary roads. A unified framework is developed to evaluate lighting performance, PV–battery sizing, voltage drop behavior, and lifecycle cost under different system architectures. Optimal pole spacing and luminaire ratings are determined using DIALux, while PV–battery configurations are optimized using HOMER Pro based on site-specific solar irradiance. The analysis focuses on voltage drop as the key electrical constraint and examines its impact under decentralized and centralized nanogrid configurations (25%, 50%, and 100%) in both stand-alone and grid-connected modes. The results show that increasing centralization reduces component redundancy but significantly increases cable length, conductor sizing, and infrastructure cost. A techno-economic assessment with lifecycle cost and sensitivity analysis indicates that a 25% centralized configuration reduces total system cost by approximately 23% compared to fully decentralized systems while avoiding excessive cabling costs. These findings demonstrate that voltage drop and electrical infrastructure constraints play a decisive role in determining optimal system design, highlighting the importance of system-level integration rather than isolated optimization of lighting or energy components.
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    Combining Fuzzy Logic and Discrete Wavelet Transform for Accurate Fault and Inrush Current Classification in High Voltage Capacitor Banks
    (2024-01-01)
    Songsukthawan, Panapong
    ;
    Patcharoen, Theerasak
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    Ananwattanaporn, Santipont
    ;
    Yoomak, Suntiti
    ;
    Pothisarn, Chaichan
    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.
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    An Approach for Voltage Drop Improvement in Distribution Line Using High-Voltage Capacitor Bank
    (2025-01-01)
    Songsukthawan, Panapong
    ;
    Ananwattanaporn, Santipont
    ;
    Thongsuk, Surakit
    ;
    Phannil, Natthanon
    ;
    Bunjongjit, Sulee
    Distribution line voltage drops cause power losses and a general decline in the efficiency of the electrical power system. In this study, PSCAD software is used to evaluate the elements that impact the voltage drop in the distribution line, including distribution line length, electric load power factor, and electric load capacity, both with and without capacitor bank installation. The 22-kV overhead distribution line in Thailand served as the basis for the simulation model’s creation. It has been suggested to install capacitor bank-based techniques to increase voltage on distribution lines. The findings show that the voltage drop is significantly influenced by the distribution line distance, electric load power factor, and electric load capacity. The voltage drop can be minimized to the greatest extent by properly arranging capacitor banks.
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    Enhancing the Reliability and Efficiency of 115/22 kV Electrical Substations in Thailand: Design Principles and Operational Strategies
    (2026-01-01)
    Songsukthawan, Panapong
    ;
    Sripakarach, Panot
    ;
    Sreewirote, Bancha
    ;
    Ananwattanaporn, Santipont
    This study presents a comprehensive analysis of the design and construction of a 115/22 kV electrical substation, delving into the core principles of substation design and operational functionality. By focusing on the reliability and efficiency of various substation components, this research highlights critical aspects of equipment installation and protection systems, aiming to pave the way for enhanced practices in future equipment development and installation. Utilizing a model that replicates a real-world 115/22 kV outdoor power station control building, complete with a main and transfer bus system, this study encompasses both indoor and outdoor equipment. A key feature of this research is its thorough structural assessment and meticulous calculations for the ground grid and bay-to-bay configurations. The application of the Current, Distribution, Electromagnetic Fields, Grounding, and Soil Structure Analysis (CDEGS) program ensures that the study adheres to standard ground grid calculations, thereby enhancing the reliability and safety of the substation design. The findings of this research offer valuable insights and optimized strategies for the design and operation of electrical substations. These insights are crucial for electrical engineering, as they contribute to the advancement of substation reliability and efficiency, ultimately benefiting the broader field of power systems engineering. By addressing both theoretical and practical aspects, this study serves as a vital resource for engineers and researchers dedicated to improving substation design and functionality.
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    An approach to energy conservation in lighting systems using luminaire-based sensor for automatic dimming
    (2025-12-01)
    Jettanasen, Chaiyan
    ;
    Thongsuk, Surakit
    ;
    Sottiyaphai, Chayanut
    ;
    Songsukthawan, Panapong
    ;
    Chiradeja, Pathomthat
    Lighting systems account for a significant proportion of energy consumption in buildings. Therefore, energy conservation within these systems can greatly enhance overall building energy efficiency. This study proposes a control strategy for LED lamps by adjusting lighting intensity and improving the performance of electric luminaires. The approach involves implementing an automated dimming system that adapts lighting intensity based on surrounding light levels. A system comprising an ambient light sensor, microcontroller, power supply module, dimming controller, and lamp was developed. The sensors measure brightness within a specified range in real time, and the microcontroller analyzes and compares this data against the brightness settings for specific areas. The designed control system was tested in a laboratory setup to demonstrate its effectiveness in a controlled environment. Results showed a 75.65% reduction in power consumption compared to standard lamps in a simulated environment, highlighting its potential for significant energy savings in buildings and its contribution to environmental sustainability.
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    Energy Harvesting from Railway-Induced Vibrations Using Piezoelectric Nanogrid Systems
    (2025-01-01)
    Jettanasen, Chaiyan
    ;
    Songsukthawan, Panapong
    ;
    Yoomak, Suntiti
    ;
    Bunjongjit, Sulee
    ;
    Ngaopitakkul, Atthapol
    This paper investigates the feasibility of piezoelectric nanogrid systems designed to harvest mechanical energy from vibrations induced by passing trains. Two membrane-based piezoelectric module mounting configurations - sleeper-mounted at a 5 cm offset from the rail, and recessed side-mounted - were rigorously analyzed using Finite Element Method (FEM) simulations for structural durability and energy-harvesting performance. Realistic excitation waveforms, synthesized from FEM modal characteristics combined with actual field measurement data, were employed in detailed MATLAB/Simulink electrical simulations. Results demonstrated a superior electrical current output from the side-mounted configuration (2.2839 A) compared to the sleeper-mounted arrangement (1.30195 A). A practical assessment revealed that only 9 side-mounted or 16 sleeper-mounted modules are necessary to effectively charge a standard 12V 20Ah LiFePO4 battery. Moreover, daily accumulated energy of approximately 68-70 Wh could reliably power essential low-power devices at railway stations, confirming the proposed piezoelectric nanogrid system's viability as a robust, efficient, and scalable energy-harvesting solution.
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    Comparative Study between On- and Off-Grid Photovoltaic to Reduce Peak Demand in Residential Houses
    (2026-01-01)
    Jettanasen, Chaiyan
    ;
    Sottiyaphai, Chayanut
    ;
    Bunjongjit, Sulee
    ;
    Songsukthawan, Panapong
    ;
    Phannil, Natthanon
    This study proposes a programmable logic controller (PLC)-based energy management system integrated with an off-grid photovoltaic (PV) system and battery storage to reduce residential peak demand. The proposed system dynamically manages power supply between the distribution grid, PV generation, and battery storage based on real-time power demand measurements. When the measured power exceeds a predefined threshold, stored renewable energy is utilized to support high-load conditions and mitigate peak demand. Experimental results obtained from a residential-scale test system demonstrate that the proposed off-grid PV system with PLC control can reduce peak demand by up to 29.68% and 15.57% under office-working and work-from-home scenarios, respectively, compared with conventional grid supply and on-grid PV systems without storage. In addition, the system achieves electricity cost reductions of up to 13.63% under Time-of-Use tariffs and up to 11.42% under normal electricity rates, depending on load behavior. These results indicate that integrating PLC-based control with off-grid PV and battery storage can effectively mitigate residential peak demand and reduce electricity expenses under realistic operating conditions.