For commercial and industrial systems, set cero exportantion energy, cero injection, simplify the legalization of the power plant, as in Spain.
Huawei has a standard system for cero injection with one SmartLogger and a single homologate power meter.
The SmartLogger manages the cero injection system. It can handle up to 80 inverters.
The power meter can only measure at a single point.
The inverter compatible are up 100 kW, with a AC voltage of 400 V.
The communication between devices must be with RS485 cable. The maximum distance between SmartLogger and inverter should be less than 400 meters. The main recommendation is to install the SmartLogger close to the inverters.
This system has some limitations for complex power plant like:
More than one measure point. Two building with different consumes. Multiple connexion to grid. Transformer station redundant. Distances between devices more than 400m. Inverter of utility scale, with 800 V of AC voltage.
In order to present a solution for all these configurations, there is a system design for Huawei power plant, Wattkraft Zero Injection Solution.
This system let to have different measure points, It’s able to measure in MV or HV. It lets to have long distances between measure point and the inverter. It adjusts the power at real time, depending on consume and irradiation. It controls the inverters power in less than 2 seconds. It is certificated for the Utility Scale inverrter, SUN2000 185KTL-H1 and SUN2000 215KTL-H0/3
