High voltage wire and cable systems used in power grids today lose circa 8% across T&D of the power produced at the point of generation. Enertechnos has developed an innovative electrical transmission cable called Capacitive Transfer System (“CTS”) to transmit electrical energy more efficiently and economically from power stations to end consumers by reducing such losses.
The electricity sector is going through a major transformation: the ways in which electricity is generated and consumed have changed dramatically over the last decade and this transition is expected to continue. The transmission and distribution of electricity is a fundamental part of the electricity value chain. CTS is a breakthrough and potentially disruptive technology: the first fundamental change to power cable geometry and fabrication in decades, whilst still leveraging existing cable-manufacturing technology.
Benefits over existing conventional cable technology include:
- Lower delivery losses – resulting in lower generation costs and carbon emissions: Up to 20% more power deliverable via CTS than with conventional cable from same power source (subject to power input and load factors).
- Lower capital costs: Reduced need for AC booster transformers or HVDC converter stations which can comprise up to 40% of project capex, since CTS has materially less voltage drop than existing wire and cable.
- Lower ongoing operating costs: Reduced maintenance requirements due to significantly fewer transformers and converter stations
- Expected lower earth leakage: More cable can be buried underground than via overhead pylons.
- Expected lower electro-magnetic emissions: Cable can be routed alongside existing infrastructure within a reduced ‘quarantine area’, and more easily co-packaging with communication links.
Market Entry Applications
(i) national grids
(ii) private wire networks or rural micro-grids, the latter particularly in developing countries
(iii) links to isolated loads such as island or mining communities, or outback farms
(iv) sub-sea power-from-shore (“PFS”) links to offshore oil & gas platforms and offshore-to-offshore links
In addition, CTS should also be suitable for potential game-changing applications such as:
- Offshore wind farms
- Repowering wind farms
- Smart grid
- Co-packaging with data / communications cables
- Grid reinforcement for electrification of vehicles (UK and French government mandates on prohibition of petrol- and diesel-only vehicles by 2040 will place significant additional burdens on grid reinforcement)