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
 
27 of 60 
The DNSP and Proponent shall inform each party of any planned works and incidents on the 
telecommunications and ED equipment that may impact the communications link.
4.13.2 Traffic inspection and notifications 
All IP traffic received from the EG shall undergo continuous deep packet inspection, intrusion 
detection and protection activities, before the packet is forwarded to the final destination. 
The DNSP may disconnect all IP traffic flows upon suspicion of malicious activities or security 
breaches. 
The Proponent shall inform the DNSP of any cyber security breaches that may impact the 
operational electrical environment. 
The Proponent shall inform the DNSP of the vulnerability and risk management strategy upon 
knowledge of a vulnerability advisory affecting the operational electrical environment. 
4.13.3 Traffic flows 
The DNSP and Proponent shall allow SCADA communications between the DNSP SCADA 
interface point and the EG SCADA interface point to facilitate the control signalling capabilities. 
The Proponent shall only be able to send SCADA communications to the single DNSP SCADA 
interface point within the zone substation. 
Internet Control Message Protocol (ICMP) traffic should be allowed between Edge Defence (ED) 
Devices to enable troubleshooting capabilities. 
The DNSP shall deny all other traffic flows and shall be considered as suspicious activity. 
Table 16 shows detailed information of security over information traffic flows. 
Table 16 Information traffic flow details 
Flow ID Description 
Source 

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