Photovoltaic Power Generation and Energy Storage: Crafting Efficient Energy Solutions
Abstract:
This article delves into innovative projects that combine photovoltaic power generation with energy storage systems and charging piles, analyzing the design and operational strategies of two different projects, as well as how intelligent energy management enhances energy efficiency and economic benefits.
Body:
Integration of Photovoltaic Power Generation and Energy Storage
Photovoltaic power generation, as a clean energy source, is increasingly becoming an integral part of the global energy structure. Coupled with an Energy Storage System (ESS), photovoltaic power can not only supply electricity during the sunny daytime but also release energy from the storage system during the night or when sunlight is insufficient, achieving around-the-clock energy supply.
Project One introduces a 200KW photovoltaic power generation system equipped with 2 energy storage units of 215kWh/100kw and 11 charging piles, including 3 DC charging piles of 50KW and 8 AC charging piles of 7KW. The system was designed with considerations to prevent power from flowing back into the grid, adopting a low power setting.
Project Two is divided into two phases. The first phase, which started in October 2023, mainly involves the deployment of the energy storage system and charging piles, including 3 energy storage units of 215kWh/100kw and 25 charging piles. The second phase further integrates 50KW photovoltaic panels and Huawei inverters of 25kw*2pcs, as well as 5 energy storage units of 215kWh/100kw, increasing the number of charging piles to 38.
Intelligent Energy Management Strategies
To maximize energy utilization efficiency, both projects employ an Intelligent Energy Management System (EMS) that can set different charging and discharging strategies according to various months, weather conditions, and holidays. For instance, a sunny day strategy might prioritize the use of photovoltaic power, while a rainy day strategy might rely more on the energy storage system.
Economic Benefit Analysis
By implementing peak shaving and valley filling, Project Two has already achieved economic benefits in the first phase. With the implementation of the second phase, it is expected that energy efficiency and economic benefits will be further enhanced.
Conclusion:
The combination of photovoltaic power generation and energy storage not only improves the self-sufficiency of energy supply but also provides strong support for electric vehicle charging. With technological advancements and cost reductions, this integrated energy solution is expected to gain wider application in the future.
