Power plant energy storage auxiliary frequency regulation solution

What is the difference between auxiliary regulation and energy storage system?

The output fluctuation of the thermal power unit is the biggest when the auxiliary regulation is only from the load side, and is relatively small when the frequency change rate is fast. The output of the energy storage system is small while the SOC consumption is small, and the frequency stability is not affected.

How does auxiliary regulation affect the SOC of energy storage?

The auxiliary regulation from the power side alone makes the SOC of energy storage exceed the limit, exceeding the upper limit of SOC operation by 0.9. In the case of comprehensive regulation, the SOC is well maintained near the reference value. 5.

Why should a thermal power plant have a frequency control system?

The system can significantly improve the automatic generation control for frequency regulation auxiliary service ability of the unit while ensuring the linkage of conventional power supply and thermal power improve the flexibility and economic benefits of traditional thermal power plants.

How a hybrid energy storage system can support frequency regulation?

The hybrid energy storage system combined with coal fired thermal power plant in order to support frequency regulation project integrates the advantages of “fast charging and discharging” of flywheel battery and “robustness” of lithium battery, which not only expands the total system capacity, but also improves the battery durability.

Why should energy storage be a regulated power source?

Additionally, as a flexible regulated power source, energy storage's regulation capability and response speed in the frequency regulation (FM) auxiliary service market is significantly better than that of traditional thermal power plants. By providing services such as FM, SES can generate greater profits and enhance its capacity utilization rate.

What is coupling coordinated frequency regulation strategy of thermal power unit-flywheel energy storage system?

The coupling coordinated frequency regulation control strategy of thermal power unit-flywheel energy storage system is designed to give full play to the advantages of flywheel energy storage system, improve the frequency regulation effect and effectively slow down the action of thermal power unit.