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Author: search.filters.author.Ngaopitakkul, AtthapolSubject: search.filters.subject.Distributed Generation

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    Item type:Publication,
    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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    Study of Multi-distributed Generation Behavior when Fault Occurrence in Distribution System Using Wavelet Transform
    (2016-12-28)
    Ananwattanaporn, Santipont
    ;
    Ngaopitakkul, Atthapol
    In the last decade the number of power generation using renewable energy has been rapidly increased due to the energy and environmental issue. This trend in renewable energy has shifting power generation system from Centralized Generation (CG) to Distributed Generation (DG). With the new power generation on conventional distribution system, Analysis on disturbance must be done to ensure safety and reliability of the system. This paper aim to analyze behavior of transient signal when disturbance occur in distribution system with distributed generation. System under study is 22kV distribution system consist of wind power generation unit. Simulation was done by using PSCAD/EMTP program. The Discrete Wavelet Transform (DWT) is applied for decomposition of fault signal. To evaluate wavelet characteristic when fault occur in the system, Comparison in case of distribution system with and without wind power generation were done. Result indicated that with distributed generation, fault level is increasing and cause a changing in wavelet signal characteristic.