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The smooth output in the energy storage objectives of customized New On-grid Photovoltaic Energy Storage System products.

The smooth output in the energy storage objectives of customized New On-grid Photovoltaic Energy Storage System products.

(Summary description)Customized New On-grid Photovoltaic Energy Storage System products are power generation systems including photovoltaic module array, photovoltaic controller, battery pack, battery management system (BMS), inverter and corresponding joint control and dispatching system of energy storage power station.

The smooth output in the energy storage objectives of customized New On-grid Photovoltaic Energy Storage System products.

(Summary description)Customized New On-grid Photovoltaic Energy Storage System products are power generation systems including photovoltaic module array, photovoltaic controller, battery pack, battery management system (BMS), inverter and corresponding joint control and dispatching system of energy storage power station.

Information

Customized New On-grid Photovoltaic Energy Storage System products are power generation systems including photovoltaic module array, photovoltaic controller, battery pack, battery management system (BMS), inverter and corresponding joint control and dispatching system of energy storage power station.

Photovoltaic power generation system can be divided into grid connected photovoltaic power generation system and independent photovoltaic power generation system according to whether grid connected or not. Customized New On-grid Photovoltaic Energy Storage System products mainly refer to photovoltaic systems connected to the power grid for operation and receiving power grid dispatching, such as various centralized or distributed photovoltaic power stations.

Customized New On-grid Photovoltaic Energy Storage System products are directly connected to the distribution network, and the electric energy is directly input into the power grid. At present, the energy storage system is generally not configured. With the serious phenomenon of "light abandonment and power restriction" of photovoltaic and wind power generation, and the large fluctuation of power output of photovoltaic and wind power generation systems, the utilization and promotion of renewable energy are increasingly restricted, The configuration of energy storage in the New On-grid Photovoltaic Energy Storage System has become one of the research directions of large-scale energy storage system.

The configuration of energy storage in customized New On-grid Photovoltaic Energy Storage System products is determined by the energy storage objectives. Today, we will introduce in detail the smooth output in the energy storage objectives of customized New On-grid Photovoltaic Energy Storage System products.

1) Customize the smooth output of New On-grid Photovoltaic Energy Storage System products

Photovoltaic power generation is a process of converting solar energy into electric energy, and its output power changes dramatically under the influence of environmental factors such as solar radiation intensity and temperature. In addition, since the photovoltaic power output is DC current, it needs to be connected to the power grid after being converted into AC through the inverter, and harmonics will be generated in the inverter process. The instability and harmonic of photovoltaic power make the access of photovoltaic power have an impact on the power grid. Therefore, an important purpose of configuring energy storage in the New On-grid Photovoltaic Energy Storage System is to smooth photovoltaic power output and improve photovoltaic power quality. The configuration mode of New On-grid Photovoltaic Energy Storage System aiming at smooth photovoltaic power generation output is generally configured with centralized energy storage system on the photovoltaic power generation side, and the photovoltaic energy storage system structure aiming at smooth output

The capacity of customized New On-grid Photovoltaic Energy Storage System products is determined by the grid connection smoothing strategy, and the energy storage power is generally determined by the smoothing target. At present, the photovoltaic grid connection smoothing strategies based on the New On-grid Photovoltaic Energy Storage System mainly include fixed time constant low-pass filter smoothing strategy, fuzzy control / SOC (state of charge of energy storage battery) smoothing strategy, photovoltaic power prediction smoothing strategy, etc. Low pass filter smoothing strategy has general smoothing effect, but it has simple control and low cost. It is a control strategy with broad application prospect at present.

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