Solar electricity from photovoltaic installation can be used to feed into a public power grid (grid-connected operation) or for local consumption (stand-alone operation). Modern solar electricity systems combine both options, being controlled according to demand and availability. Storage systems and energy management systems are used to control the energy flows.
ET 255 contains networked components of a solar electricity system such as charge controller, grid inverter, accumulator as storage for electricity, bidirectional electricity meter, as well an energy management system (EMS). Various controllable consumers can be integrated into the solar electricity system. Data from the networked components are recorded in the central communication and control unit (CCU).
Either the ET 255.01 photovoltaic simulator or real photovoltaic modules, such as ET 255.02, can be used as the solar electricity source. The optional accessory ET 255.03 contains two controllable electrical loads that are prioritized differently when supplied by ET 255. Used in conjunction with the accessories, the behaviour of a solar electricity system can be investigated under varying operating conditions.
In order to ensure there is sufficient illuminance, the trainer should be operated with sunlight or the optionally available artificial light source HL 313.01.
Operating data from the solar electricity system is displayed on a touch screen. It is also possible to retrieve operating data via the manufacturer’s web portal.
The trainer is controlled via the GUNT software on an external PC (not included), which is connected via a network interface. The GUNT software also allows you to operate and configure the optional ET 255.01 photovoltaic simulator. Typical generation and consumption profiles can be specified via time-controlled sequences. The network-capable software makes it possible to follow and analyse the experiments at any number of workstations via a LAN/WLAN connection to the local network.
