Solar plant controller
Control at the grid connection point
The solar plant controller MaxWeb NX pro allows the active and reactive powers to be controlled directly at the grid connection point. This way, solar plants easily provide the contribution to grid stabilisation required by law. Furthermore, they meet the requirements of the grid operators requesting direct control at the grid connection point and not at the inverter for large solar parks.
Connection to the control room of the grid operator can be executed via a SCADA protocol (e.g. IEC 60870-5-101/104) or other digital and analogue interfaces. Using these, MaxWeb NX pro is provided with the required target specifications of the grid operator and compares these to the current ACTUAL values at the grid connection point. Now, MaxWeb NX pro controls the inverters of the plant so that these feed into the public power grid according to the specifications. In this way, the cos-φ value is controlled, the active power is reduced, the reactive power specification is met, and the circuit breaker is controlled, amongst other values.
Reliable and extendable
MaxWeb NX pro offers the highest reliability even in the most difficult conditions. For example, the operating temperature range is in the increased industrial range of -40 to +70 degrees Celsius. MaxWeb NX pro is maintenance-free and designed for continuous operation. Thanks to the processor performance and the diverse interfaces, the functionality can be extended easily so that future requirements can be implemented quickly as well.
Available as of Q2/2013.