Analysis of Common Modes of Photovoltaic Energy Storage Power Stations in the Era of Solar Energy Storage
In the new energy era, solar photovoltaic power generation has become the foundation for sustainable development in the domestic energy and power industry. Now we have ushered in the era of solar energy storage. In this era, the combination of photovoltaic and energy storage has solved many drawbacks of traditional photovoltaic power generation. So what are the current common models of photovoltaic energy storage power plants?
1. Exclusive configuration of energy storage system on the DC side of the power supply.
Under the combination of photovoltaic energy storage, an energy storage system on the DC side of the power supply is configured. The configuration of the system can ensure better power generation performance in the DC system of photovoltaic power generation. In this system, the photovoltaic system and the energy storage system share the inverter. However, due to the characteristics of battery discharge, there will be differences in output. In such a situation, the energy storage battery needs to be able to compensate, showing a curve with good output characteristics, so as to achieve the goal of peak discharge and low peak energy storage.
2. Exclusive configuration of the energy storage system on the AC side of the power supply.
The configuration of the energy storage system on the AC side of the power supply adopts a separate system. The system is a separate charge and discharge controller and inverter, which can lay the foundation for charging or inverting the battery. In fact, it is equivalent to realizing the effect of external energy storage configuration for the original photovoltaic power generation system. Such a power station mode can not only realize the intelligent management and control of charging and discharging, but also help to dispatch the power outside the station to ensure that the system operates more conveniently.
3. Exclusive configuration of the energy storage system on the load side.
This mode is a mode that can be used exclusively for emergency power and mobile electric equipment. For example, electric vehicles or power tools can use this model to achieve electricity demand goals. It can effectively ensure the environmental protection and high efficiency of the battery, so as to ensure the demand for power generation and storage.
4. Solve the disadvantages of pure photovoltaic output
There is instability in a simple photovoltaic system, and energy storage technology is the key to effectively solve the high and low peak power, can achieve load tracking, and can also achieve power quality management. The energy storage system can take advantage of the price gap between peaks and valleys to bring higher benefits, and it can also effectively adjust the capabilities of the system itself and solve the problem of the combined development of renewable energy and power grids.
The above-mentioned modes are commonly used in photovoltaic energy storage systems. Under these modes, the drawbacks of pure photovoltaic output can be solved, and at the same time, the cost of power generation can be effectively reduced, the demand for electricity consumption can be ensured, and the impact caused by insufficient power or power curtailment during peak periods can be avoided.
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