Power Conversion System Performance Characteristics
Our energy storage products and system solutions solve power supply problems in areas with no and weak electricity, and achieve smart power supply and demand allocation. This system is designed for three-phase energy storage system, which can realize the functions of On grid power generation, off-grid inversion, and city power reverse charging. If the power grid is disconnected, the storage system can automatically and seamlessly switch to off-grid operation mode to ensure uninterrupted power supply.
System Features
- Specially designed for smart grid and smart microgrid to accept power grid dispatching.
- Meet the requirements of lead-acid battery, lithium battery, super capacitor, vanadium battery and other different forms of energy storage, and has a wide range of applications.
- Bidirectional inverter, constant power, current, voltage charge and discharge and other battery charge and discharge modes can be selected.
- With time period working mode setting function, set up reasonable working mode according to local power network characteristics.
- Two AC interfaces, i.e. mains interface and load interface, to realize grid connected operation and independent isolated grid operation.
- Perfect islanding detection and mode switching of parallel and off grid, when the power supply is suddenly cut off, the PCS can automatically and seamlessly switch to the off grid working mode, separate from the grid, and establish a micro grid to operate independently.
- RS485, Ethernet, CAN bus and other communication interfaces are optional to realize remote monitoring.
- The smart grid master control system can be interconnected with on grid solar inverter, on grid wind power system, tidal power generation system, diesel generator and other energy modes to form a hybrid energy smart grid, which can realize a variety of networking modes.
Function Introduction
On grid mode
PCS has the following function when on grid mode: Active power control function: PCS can accept the charge / discharge power command of grid monitoring system, and charge / discharge the energy storage battery according to the specified active power command.
Off grid mode
During off-grid operation, the PCS can withstand continuous power disturbance ranging from -100kVA to 100kVA, and the PCS can withstand 1.1 times of short-term rated power. During the transient process, the fluctuation range of equipment voltage frequency meets the technical specifications of PCS off grid in this technical agreement. After the system is stabilized again, the PCS can stabilize the system voltage frequency at 380V/50Hz.
On/Off grid Switching Function
PCS enables on / off grid switching capability, enabling seamless switching. The switching condition is that the system is three-phase four-wire system with three-phase load balance and unbalance can not exceed 20% of capacity. When PCS is connected to the grid, the switch on and off engages and the load is supplied by the grid. PCS can charge/discharge in the grid. If the power grid is powered off, the PCS control system detects that the switch is disconnected after the power grid is powered off, the PCS switches to off-grid operation mode and the load is supplied by the PCS.
During off-grid on-load operation, if the grid is restored, the PCS control system detects that the voltage of the grid is within normal range, adjusts the output voltage of the PCS to be consistent with the grid, and controls the switch-on and switch-off to engage. The load is restored to power supply from the grid, and the PCS is restored to on grid operation.
Demin Power
