Standard for High Voltage eg connections


Standard for High Voltage EG Connections



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STNW1175-Standard-for-HV-EG-Connections

Standard for High Voltage EG Connections 
 
STNW1175 
Owner: EGM Engineering
Release: 4, 11 Feb 2022 

Document ID: 2946177 
SME: Manager Generation & Customer Standards 
Uncontrolled When Printed
 
26 of 60 
4.11 Communication and SCADA requirements 
All communication and SCADA where established shall consider cybersecurity requirements in 
Section 4.13. 
4.11.1 Communication systems 
Communications interface requirements are outlined in Table 14. 
Table 14 Communications requirements per connection category 
Connection Class 
Communications requirement 
Class A1
No communications interface required 
Class A2
Communications interface for SCADA indication and control. Inter-tripping 
if required will also utilise the communication interface. 
Class B 
Refer to Section 6.7 
4.11.2 SCADA requirements 
The requirements of this Section shall apply as per Table 15. 
Table 15 SCADA requirements per connection category 
Connection Class 
SCADA Requirement 
Class A1
No SCADA interface required 
Class A2
SCADA interface required 
Class B 
Refer to Section 6.8 
4.12 Data and information 
4.12.1 Static data and information 
Static data and information shall be provided by the Proponent to the DNSP in accordance with 
Appendix D: Static Data and Information. 
4.12.2 Dynamic data and information 
Refer to Sections 6.8.2 and 6.8.3 for data and information to be provided when communications is 
required as per Technical Study. 
4.13 Cybersecurity and telecommunications 
4.13.1 Communications link 
The communications link is established to provide a method of transmitting the SCADA traffic via 
an IP medium.
The DNSP shall deploy an Edge Defence (ED) device that shall be physically installed within the 
communications room located within the DNSP zone substation, whilst the EG System shall deploy 
an Edge Defence (ED) Device that interfaces the DNSP telecommunications network.
The telecommunications link shall establish via IPv4 Layer 3 routable session (eBGP preferred)
and shall transit both ED devices, between the DNSP and Proponent. 



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