Power conversion systems are widely used in power systems, rail transit, military industry, petroleum machinery, new energy vehicles, wind power, solar photovoltaics and other fields to achieve energy in the grid peak and valley filling, smooth new energy fluctuations, and energy recovery and utilization. Two-way flow, actively supports the grid voltage and frequency, and improves the quality of power supply. This article will take you to unlock the quick selection of Power conversion system skills.
As one of the important forms of large-scale energy storage systems, battery energy storage has multiple uses such as peak shaving, valley filling, frequency modulation, phase modulation, and accident backup. Compared with conventional power sources, large-scale energy storage power stations can adapt to rapid changes in load, and play an important role in improving the safe and stable operation of the power system, the quality and reliability of power grid power supply. At the same time, it can also optimize the power supply structure to achieve green and environmental protection. The overall energy saving and consumption reduction of the power system improves the overall economic benefits.
Power conversion system (PCS for short) In the electrochemical energy storage system, a device that is connected between the battery system and the grid (and/or load) to realize the two-way conversion of electric energy, which can control the charging and discharging process of the battery, and perform AC and DC In the absence of power grid, it can directly supply AC load.
The PCS is composed of a DC/AC bidirectional converter, a control unit, etc. The PCS controller receives background control commands through communication, and controls the converter to charge or discharge the battery according to the sign and size of the power command, so as to adjust the active power and reactive power of the grid. At the same time, PCS can obtain battery pack status information through CAN interface and BMS communication, dry contact transmission, etc., which can realize the protective charging and discharging of the battery and ensure the safe operation of the battery.
Post time: Sep-09-2021