研究目的
To investigate the performance of tap-on-load and tap changers (OLTC) using the IEEE 34 bus system in the presence of photovoltaic generators, with different generation conditions, load characteristics, and actuation adjustment time of the regulating equipment.
研究成果
The study demonstrates that photovoltaic generators can benefit the system by reducing the number of tap changes when the load has a more diurnal profile but can be harmful if the generation is not complementary to the consumption. The use of QSTS analysis is justified for temporal analyzes in distribution networks with variable generation and load profiles.
研究不足
The study is limited to the IEEE 34 bus system and specific conditions of photovoltaic generation and load profiles. The impact of larger photovoltaic generation plants or different network configurations is not considered.
1：Experimental Design and Method Selection:
The study uses the IEEE 34 bus system as the network base, with real demand data obtained from the Federal University of Santa Maria. Photovoltaic generation modeling is based on solar irradiance data from a photovoltaic system installed at the university.
2：Sample Selection and Data Sources:
Load curves and their behavior are surveyed using PowerNET P-600 G4 energy analyzers. Solar irradiance data is acquired from a photovoltaic system with a Fronius Galvo 3.1-1 inverter and Risen SYP 250P photovoltaic modules.
3：1-1 inverter and Risen SYP 250P photovoltaic modules.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: PowerNET P-600 G4 energy analyzers, Fronius Galvo 3.1-1 inverter, Risen SYP 250P photovoltaic modules, and OpenDSS software for electrical simulations.
4：1-1 inverter, Risen SYP 250P photovoltaic modules, and OpenDSS software for electrical simulations.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: Quasi-Static Time-Series (QSTS) analyzes are performed using OpenDSS software to evaluate the iteration between daily generation variation and load sequential form.
5：Data Analysis Methods:
The study monitors voltage levels and tap changes of voltage regulating transformers, power flow behavior, and losses in the system under different conditions.
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