'Synchronous Power Generating Module' means an indivisible set of installations which can generate electrical energy such that the frequency of the generated voltage, the generator speed and the frequency of network voltage are in a constant ratio and thus in synchronism (Article 2(9) of the Network Code on Requirements for Grid Connection of Generators (NC RfG)).
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Network Code for Requirements for Grid Connection Applicable to All Generators, Frequently Asked Questions, 19 June 2012 underlines a Synchronous Power Generating Module is either:
- a single synchronous unit generating power within a Power Generating Facility directly connected to a transmission, distribution or closed distribution network, or
- an ensemble of synchronous units generating power within a Power Generating Facility directly connected to a transmission, distribution or closed distribution network with a common connection point, or
- an ensemble of synchronous units generating power within a Power Generating Facility directly connected to a transmission, distribution or closed distribution network that cannot be operated independently from each other (e. g. units generating in a combined-cycle gas turbine facility), or
- a single synchronous storage device operating in electricity generation mode directly connected to a transmission, distribution or closed distribution network, or
- an ensemble of synchronous storage devices operating in electricity generation mode directly connected to a transmission, distribution or closed distribution network with a common connection point.
Detailed technical requirements for Synchronous Power Generating Modules are laid down in Title II, Chapter 2 of the NC RfG (separately for types B, C, and D Synchronous Power Generating Modules - Articles 17 - 10).
Documentation
Network Code on Requirements for Grid Connection of Generators (NC RfG), Article 2(9)