Energy storage research has now recognised the benefits of "photovoltaic + energy storage"!
Photovoltaic power generation is an essential aspect of China's energy and power sustainable development plan; energy storage technology was developed to successfully cope with photovoltaic power generating instability and stochastic difficulties.
Photovoltaic systems with energy storage units, as a dependable source of effective use of clean energy, have emerged as the preferred method of new energy.
Let's take a deeper look at PV+Storage today. "There are numerous benefits to combining PV and storage."
01. Improve the PV output curve
The climate has a significant impact on photovoltaic power generation, resulting in high output volatility and unpredictability, which has an effect on the power grid. Adding an energy storage device may follow the output curve of PV power generation, removing abrupt peaks and filling in low troughs, transforming the PV output curve into a controlled curve that is suitable for grid scheduling and decreases the effect. In some areas with abandoned light and restricted electricity, an energy storage system can first store some of the energy that cannot be utilised by the grid and then connect to the grid at other times, minimising waste caused by abandoned light and limited power.
02. Increase the rate of self-generation and self-use
PV systems may prioritise the supply of PV electricity to the load by including energy storage devices. Excess electricity may be stored in the battery, and when PV power output is insufficient or at night, the battery discharges to supply energy for the load, enhancing the PV system's self-generation and self-use rate and achieving energy self-sufficiency. At the same time, it reduces electricity costs, effectively responds to power surges, and avoids power outages.
03. Use time-sharing rates to reduce electricity costs
As an example, consider a city with peak and valley hours of power consumption: peak hours 6:00 to 22:00 and valley hours 22:00 to 6:00 the next day.
In general, the valley time energy price is substantially lower than the peak time electricity price. If the user implements a photovoltaic storage system, the use of solar power, and peak and valley time shifting, the cost of electricity may be efficiently reduced.
The inverter is set to timed charging mode, which means that the charging time period is 22:00-06:00, the discharging time period is 6:00-22:00, and the battery charging is prioritised during the PV-sufficient time period; the system can control the charging and discharging time of the battery based on the grid's peak and trough, which can increase revenue.
04. Improve the stability of the microgrid system
For locations without electricity, areas with insufficient electricity, or offshore islands, a microgrid built with PV and energy storage can offer consistent power.
Reduce noise and pollution generated by traditional energy sources, and the cost of power delivery is lower, more cheap, and dependable.
Photovoltaic advancement
Storage + photovoltaics Continuous improvement.
Overall, PV + storage systems offer several advantages, including increased power supply dependability, increased self-consumption rates, and lower electricity prices.
As nations and areas throughout the world face energy shortages, pollution, and other issues, the adoption of PV+storage systems is certain to become the standard.
By analysing the composition of the local power bill, more households will consider the implementation of PV storage, integrated ladder pricing, and peak and valley rates, thereby decreasing the electricity bill and minimising electricity expenditure.
