Modification No. 43Download PDF
Modification Proposal #42 - Clarity of Power Factor requirements for windfarms at low power levelsDownload PDF
Modification Proposal #34a - Volt Freq FRT for all generatorsDownload PDF
Modification Proposal #34b - Volt Freq FRT for all generatorsDownload PDF
Modification Proposal #34c - Volt Freq FRT for all generatorsDownload PDF
Modification Proposal #34d - Define Generator Operating ModesDownload PDF
Modification Proposal #41 - DCRP Class DerogationDownload PDF
Modification Proposal 40 Authorised PersonsDownload PDF
CRU has approved Modification No. 36 of the Distribution Code. The requirements stated under DCC11 are driven largely by the combined effect that large penetration of Non-Synchronous generation on the operation of the Transmission System. To date, this cohort of generation has comprised, almost exclusively of wind generation. It is now apparent that other forms of generation [most notably PV], which have an invertor between the primary source and the Connection Point, present the same technical challenges to System Operation. It is logical therefore that the same technical requirements should apply to them.
This approach is also consistent with that which will be taken upon adoption of the European Network Codes, most notably the Requirements for Generation [RfG], wherein the document structure is divided between Synchronous Generators and what are termed Power Park Modules.
Separately, the total quantum of generation connecting to the system has reached levels at which the quantum of un-controlled real power from distribution connected generation poses a threat to the stability of the power system. For that reason and for the reasons stated above with regard to the increase in solar generation connections, EirGrid deem necessary to make more of the PPM fleet MW controllable.
Rate of Change of Frequency Requirments of Users
Modification No. 26 - DS3 Rate of Charge of Frequency Requirements of Users.
Effective Date 09/04/2014
Modification No. 25 - Registered Capacity.
Effective Date 13/08/2014
Safety Co-ordination (DOC 11) - Modification No. 38
Modification No 38 Safety Procedures
Effective Date 23/02/2016