Electric Vehicle Charging Stations and Photovoltaic Integration Studied to Support Clean Energy Goals

Researchers from University Gadjah Mada in Yogyakarta, Indonesia, have investigated the impact of integrating Electric Vehicle Charging Stations (EVCS) and Photovoltaic (PV) generation into distribution networks. The study aimed to assess the operational uncertainties introduced by these technologies and evaluate their effects on system performance. The results show that voltage fluctuations occur on each bus during simulation, with PV integration reducing power losses but increasing them when EVCS demand is high. The average correlation between EVCS load and bus voltage is strongly negative, indicating that increased EVCS demand tends to reduce voltage levels across the network.

Key Takeaways:

• The researchers constructed probabilistic profiles for EVCS loads and PV generation based on real-world data to address the lack of realistic uncertainty modeling in conventional studies.
• A scenario-based approach was conducted to evaluate the impact of uncertainties on system performance, showing that voltage fluctuations occurred on each bus during simulation.
• PV integration reduces power losses, but integrating the demand for EVCS increases them.
• The average correlation between EVCS load and bus voltage is strongly negative, with -0.7452 for the 33-bus system and -0.4622 for the 69-bus system.
• The study found that increased EVCS demand tends to reduce voltage levels across the network, reflecting the sensitivity of bus voltages to charging activities.
• The results indicate that integrating EVCS and PV generation into distribution networks can have significant impacts on system performance and voltage stability.
• The study's findings can serve as a basis for research on integrating EVCS load and PV generation, which exhibit uncertain characteristics.
• The researchers from University Gadjah Mada include M. Isnaeni Bambang Setyonegoro, Jimmy Trio Putra, Sasongko Pramono Hadi, and Sarjiya.

Statistics:

• The correlation between EVCS load and bus voltage for the 33-bus system is -0.7452.
• The correlation between EVCS load and bus voltage for the 69-bus system is -0.4622.
• Voltage fluctuations occur on each bus during simulation, indicating significant impacts on system performance and voltage stability.
• PV integration reduces power losses by X% (exact percentage not specified).
• EVCS integration increases power losses by Y% (exact percentage not specified).
• The study's focus on the Indonesian case study provides valuable insights for similar research in other regions.

Sources:

• A scenario-based approach for probabilistic load flow analysis of electric vehicle charging and photovoltaic integration in distribution systems: An Indonesian case study. Results in Engineering, 2025, 27(), 106197.
• University Gadjah Mada, Department of Electrical and Information Engineering, Faculty of Engineering, Yogyakarta, Indonesia.