Universal GIS bypass secures energy supply in the Canaries and Balearics
PFISTERER developed and supplied a transportable universal cable system up to 132 kV for rapid use in the event of GIS failures in substations.
Image source: Pfisterer
Germany, Winterbach: PFISTERER developed and supplied a transportable universal cable system up to 132 kV for rapid use in the event of gas-insulated switchgear (GIS) failures in substations.
The system is made up for the Spanish high-voltage grid operator Red Eléctrica de España (REE), in an EU-funded project.
The first stage of the PFISTERER cable system comprises a total of 54 cable drums including EST SUB terminations with surge arrester and CONNEX plug connectors for 66 kV and 132 kV – securely stored ready for use in 18 seaworthy HQ 20’ containers. Each container holds everything necessary for a particular bypass scenario in the event of faulty gas-insulated switchgear (GIS) in a substation.
In the final stage, the system will comprise around 30 shipping containers suitable for all existing installations and possible application scenarios on the island groups of the Canaries and Balearics.
Reliable operation of the electricity networks in the Canary Islands and Balearics is essential to supply electricity to the local population and tourist centres. At the same time, the isolated location in the sea is a particular logistical challenge in the event of system failures.
Since the energy infrastructure of the islands comprises numerous cable and connection systems by different manufacturers, the main criterion for the Spanish transmission network operator Red Eléctrica de España was that the pluggable PFISTERER solution must work for all types of transformers and GIS, regardless of the equipment’s OEM or the applicable standard.
“Our longstanding experience with pluggable HV connections enabled us to offer a solution suited to this complex task that can be deployed rapidly in all application scenarios,” explains Pedro Durán, Head of Sales Spain & Portugal at PFISTERER.
Eduardo Santana, Director of the PTS Cable business unit at PFISTERER said, “We develop and supply tailor-made solutions worldwide for the respective local supply structures. A multinational PFISTERER team created a turnkey solution for REE that fits every identified scenario.”
Source: PFISTERER