In recent years, energy storage power supply plays an increasingly important role in power system. Before the energy storage power supply, the operation efficiency of the power system is very low. Now with the development of energy storage power, it can store electric energy in the power grid, thus greatly reducing the operating cost of the power system and environmental pollution. For the power system, an energy storage power supply can realize three functions: power storage, power generation and power consumption. Because it can store electric energy and has strong anti-interference ability, it has become a major competitor in the outdoor energy storage power market.
1、 Principle of energy storage power supply
The energy storage power supply mainly consists of three parts: energy storage battery, energy storage battery pack and rechargeable battery. The energy storage battery is different from the DC generator. It combines the energy storage battery with the alternator to achieve the purpose of energy storage. The working principle of the energy storage battery is to realize energy recovery through the internal discharge of the battery pack. The energy recovery of energy storage power supply can adopt many ways.
2、 Usage of energy storage power supply
1. Mode of energy storage and power consumption: The outdoor energy storage power supply can directly connect the energy storage battery pack to the power system, so it can be used normally like ordinary household appliances, and can be charged from the energy storage battery pack at any time when needed. 2. Energy storage voltage: The energy storage power supply is directly output from the AC power supply in the same way as ordinary household appliances. However, the energy storage power supply can be combined with the transformer to form a load unit in the energy storage equipment. 3. Frequency of energy storage and power use: Since the working frequency of ordinary household appliances is about 50 Hz, the frequency of energy storage and power use is about 50 Hz. 4. Use of energy storage power: energy storage power supply can generally be used for load power supply, emergency power supply guarantee and standby power supply) and other fields. The energy storage power supply is widely used in the power system to reduce the impact of system fluctuation and impact due to its large current (generally above 1A) and stable voltage waveform.
3、 Characteristics of energy storage power supply
1. Small size: the energy storage power supply is small in size and light in weight, which can be reduced in size and installed outdoors. 2. Easy to use: The energy storage power supply adopts DC power supply and AC power supply, and only needs to put the battery pack into the device to supply power. 3. High efficiency: as an energy storage device, the energy storage power supply has high efficiency and can save electricity costs. 4. High flexibility: compared with conventional power supply, energy storage power supply has the characteristics of simple operation and maintenance and low operation cost. 5. Environmental protection: the energy storage power supply has good wave absorption performance and anti-interference ability during use. So it is popular with consumers.
4、 Application case of energy storage power supply in power system:
1. Power plant energy storage: through energy storage, it can achieve efficient balance between power generation and power consumption, ensure the safe operation of the power grid, and provide guarantee for the continuous and stable operation of the power plant; 2. Energy storage of new energy power plants: the use of energy storage can realize the stable operation of photovoltaic, wind energy and other new energy; 3. Industrial energy storage: for some heavy industrial enterprises such as heavy industry and heavy chemical industry, the installation of energy storage power stations is a very good solution; 4. Power grid energy storage: use battery and other energy storage equipment to ease the trend of user power tension; 5. The application of mobile energy storage is one of the future development directions of mobile energy storage.
Post time: Oct-22-2022
