Testing System Overview
Renewable power plants like wind, photovoltaic (PV), and CHP (Combined Heat and Power Plant) are more and more popular and the amount of already installed units is huge. For the operation of the public grid these renewable power generation units have to fulfill a couple of requirements to contribute to a stable operation of the grid.
The standards, which define the conditions for operating the plant at the grid, vary from country to country: e.g. FGW-TR3, VDE-AR4105, BDEW, etc. These regulations define the control of the active and reactive power, the limits of Power Quality emissions, and the behavior at grid disturbances.