Study New transmission technology on the bay/station level using IEC 61850

Retrospective Single core cable CAT 7 cable (Twisted Pair) Ethernet cable, preassembled

Retrospective Optical fibre cable Optical fibre cable, preassembled Coaxial cable

Rectangular Waveguide b a

Waveguides – in “everyday” life: Wind instruments: flutes, organ pipes, trumpets, ... Microwave ovens Transmitters Glass fibre cables ...

Rectangular Waveguide b λ 4 λ 4 a

Rectangular Waveguide x z y b E field H field a

The future has begun: Waveguides as a transmission medium in medium voltage switchgear

Installation position Waveguide in a gas-insulated medium voltage panel – ZX2 double feeder panel

Installation position – detail view: Waveguide in a gas-insulated medium voltage panel – ZX2 double feeder panel

Comparison: electrical – optical – radio signals System availability Transmission media Waveguide Optical fibres

View of the present

View into the future

Use of waveguides - Benefits in potential product applications Communication to IEC 61850 Control and automation with the necessary safety Robust transmission technology by radio signals without electrical or optical links High system availability Closed system Small amount of installation work No time-consuming making up of cables Easily extendable – compliant with ZX system technology No interference from outside: EMC Thermal Mechanical Merging of process and station levels

Integration of third party devices NCC Uplink NCC Level SYS 600 with gateway functionality Win XP SP2 Meinberg LANTIME/GPS SNTP Server 1 Station Level Ethernet 100MB Integration of third party devices Access Point Access Point Bay Level IEEE802.11a Waveguide

Hot-Standby Access Points Bay Level Watchdog Link IEEE802.11a NCC Uplink NCC Level SYS 600 with gateway functionality Win XP SP2 Meinberg LANTIME/GPS SNTP Server 1 Meinberg LANTIME/GPS SNTP Server 2 Station Level Ethernet 100MB Access Point Access Point Hot-Standby Access Points Bay Level Watchdog Link IEEE802.11a Waveguide