Compliance tests for power plants with the technical requirements for grid connection

In nowadays power systems, it is very important to know the requirements related to compliance tests. The set of requirements for compliance tests provides technical requirements for grid connection. When compliance tests are performed successfully, the final operational notification is issued by TSO. The legal framework for compliance tests is: Commission Regulation (EU) 2016/631 of 14 April 2016: “Establishing a Network Code on Requirements for Grid Connection of Generators”, THE EUROPEAN COMMISSION, abbreviated RfG, which full implementation in the European Union started on April 27, 2019. According to RfG power-generating modules are divided into groups with a pre-known set of requirements. The groups are formed in relation to electricity generation technology, and maximum capacity and the voltage level at the connection point.

RfG divides the modules according to electricity generation technologies on: synchronous power-generating module - frequency of the generated voltage, the generator speed and the frequency of network voltage are in a constant ratio and thus in synchronism, and power park module: - non-synchronously connected to the network or connected through power electronics. The same document divides the modules according to maximum capacity and the voltage level at the connection point on: type A, type B, type C and type D. For the voltage levels less than 110 kV power-generating modules can be type A, type B, type C or type D, depending on its the maximum capacity, while for the voltage levels greater or equal to 110 kV the modules are type D. For modules of maximum capacity less than 0.8 kW no categorization is done. The limits for maximum capacity threshold (Fig.1) for which a power-generating module is type B, type C and type D, are: 1 MW, 50 MW and 75 MW, respectively (note that maximum capacity thresholds are proposed by the relevant TSO, and approved by the relevant regulatory authority or state).

Fig.1. Limits for maximum capacity thresholds

Please, insert: the voltage level at the connection point, capacity and electricity generation technology of power-generating module, to obtain the type of the module and the set of requirements for compliance tests, according to RfG.