Protective Pipes for
Author and at the same time consultant in the field of grid expansion and power cable conduits is Roman Brune. This article was recently published in our egeNews.
Pipe systems are crucial for a fast network expansion
In view of the Federal Government’s decision to phase out nuclear and coal-fired power generation by 2038, a rapid expansion of the German transmission grid will be crucial. To ensure an efficient expansion of the network, choosing the right pipe systems and connection techniques will be major success factors.
Currently, the share of renewable energies is around 46 percent, scheduled to be increased to a level of 65 percent by 2030. Besides power generation, transportation of electricity to the consumer represents a challenge. In the future, it will not always be possible to generate electricity close to the consumer. Most of our future wind energy will be generated in the North Sea and Baltic Sea. To reconcile the increasing energy demand with the climate
goals while at the same time ensuring security of supply, powerful electricity grids adapted to renewable energies are required. According to the Network Development Plan for Electricity 2019–2030, the Federal Network Agency intends to build 3,600 additional grid kilometres by 2030. One part of the solution is an expansion via extra high-voltage-direct current (HVDC) transmission. The expansion plan includes three direct current routes designed to transport the electricity from the North to the South: Südlink, Südostlink, A-Nord (Ultranet) plus a planned fourth route. The corridor for the fourth DC route leads from Heide in Schleswig-Holstein via Wilhelmshaven to Polsum in North Rhine-Westphalia.
The Electricity Miy in Germany in 2019 (net)
Share of energy sources in net electricity production in Germany.
Expansion plan of HVDC connections
A-Nord, Heide-Polsum, Südlink and Südostlink.
The ambitious schedule for the expansion of the DC routes presents major challenges for transmission grid operators and construction companies in charge alike. The success of the grid extension projects depends on rapid and straightforward completion of the underground cable routes. Any swift and safe construction progress of the individual route segments will require the use of efficient pipe systems. This way, it becomes possible to built duct segments irrespective of the cable draw-in.
Powerful pipe systems for the scheduled grid extension
egeplast provides systems solutions consisting of protective pipes and connection options which can be customised to meet the particular conditions associated with any given project. The protective pipe egeplast Power Protect for up to 525 kV high and extra-high voltage cables have been designed to withstand the occurring thermal loads. The lifetime of the pipes exceeds the deployment period of the cables. This way, new cable systems can be pulled
into the preexisting pipes if required. egeplast provides secure and fast connection techniques tailored to the installation methods and route properties involved: plug-in connectors for open trenches, welded connections for horizontal drilling (HDD) and the ploughing method. These individual systems solutions have already helped to realise an entire range of power lines in ways which are both economical and safe.
Usage comparison egeplast Power Protect Pipes
Significantly prolong useful life and depreciation periods for applications involving temperatures of up to 70 °C.
The electricity film “Power Protect” shows solutions egeplast offers for the success of the energy transition. In the interview, Erwin Behrends, engineering service provider in the field of energy distribution and generation, explains how the conversion of the energy supply can be successfully designed.
Dipl.-Ing. Erwin Behrends of B+ Ingenieur Gesellschaft mbH puts it in a nutshell: “The use of pipe systems is one of the decisive factors for the rapid and sustainable expansion of the energy transition. egeplast has recognized the requirements of the market and implemented them in innovative system solutions for all installation methods.”
Author contact details
Roman Brune has been working for egeplast international GmbH since 2017. He advises our customers in the field of power cable protection systems and manages projects with a focus on the new power lines in Germany and countries next by.