I. Positive Impacts

Enhanced Grid Resilience: Photovoltaic power generation enables local energy consumption, reducing long-distance transmission investments and losses, while improving distribution grid load capacity and system stability.

Grid Regulation Participation: PV systems can regulate voltage and frequency in the distribution grid, helping to enhance overall grid operational efficiency.

Multi-Functional Integration: It offers multiple functions such as power interruption compensation, comprehensive power quality management, and reduced investment in distribution grid equipment.

II. Negative Impacts

Voltage Instability: Fluctuations in solar panel output power due to changes in natural conditions, such as light intensity and ambient temperature, may cause voltage fluctuations and flicker at the connection point.

Harmonic Risks: PV power generation systems are typically grid-connected via inverters, which may generate harmonic currents and cause harmonic pollution to the grid.

Voltage Exceedance: When the power output of the PV system exceeds the local load, reverse power flow may occur, leading to elevated voltage at the connection point beyond permissible limits.

III. Countermeasures

Scientific Planning: Through professional photovoltaic design, reasonably plan the PV connection capacity to avoid power quality degradation caused by overload.

High-Efficiency Equipment: Selecting high-efficiency inverters can significantly reduce harmonic pollution.

Intelligent Monitoring: Strengthen real-time monitoring and management of PV connection points to promptly identify and address power quality issues.

Energy Storage Configuration: Deploy energy storage systems to smooth fluctuations in PV output power and improve power quality.

IV. Summary

Amid the gradual depletion of traditional energy sources, the use of clean energy will undoubtedly guide the future development of society. However, power quality issues cannot be overlooked. The coordination between microgrids and the main grid serves as a fundamental approach to addressing this challenge. It is believed that in the near future, solar power generation will become an increasingly popular mode of energy production.