Scottish Power Energy Networks (SPEN)
is an electricity transmission and distribution utility. SPEN guarantees the transmission and distribution of electricity from the generating point to the consumption point
without interruptions and in the most efficient way. Also, SPEN plans manage and upgrade the electricity networks to meet current and future requirements. The networks are made of overhead lines, underground cables, and substations.
The Overhead Line Protection Challenge
Reconducting in-place transmission overhead lines present a problem where a distribution overhead line crosses by below
, taking the risk that the cable falls during the works. An accidental fall of the transmission line may cause:
- affection to service, damaging the distribution line
- generate a hazard for the operators working in the area. The hazard appears when a non-live wire (transmission wire) may be in contact with the live distribution line, appearing a difference of voltage that potentially could affect the rewiring workers
To avoid the electrical hazard, no work can be done without cutting the flow along the distribution line
, affecting the quality of service to the customers.
What SPEN is looking for
It is a requirement that the alternative solutions avoid digging
, as it represents the major impact in time and cost.
The winner will present the best combination of the following factors:
- cost reduction
- shorter and easy implementation.
Solvers are asked to provide a fully described and supported solution for an alternative solution
. Solutions must be innovative, effective, and respect the given specifications.
Required Functionalities of the New Overhead Line Protection Design
The company envisions a dielectric structure that protects the distribution line of the possible drop of a wire from the transmission line
As it is a recurrent problem that appears along with the transmission networks of the company, the solution ideally would be reusable and would have a low cost of transportation and easy and quick deployment. It will withstand hard weather conditions such as storms, wind, and constant rain.
The most important characteristic of the structure and a key point for the acceptance of the solution is the electrical isolation that has to provide between the distribution line and the transmission wires.
Moreover, the structure will withstand the mechanical stress a drop of a transmission wire over the cover without suffering major damage.
Solutions must include a high degree of innovation
. The solver may provide alternative solutions to the envisioned dielectric structure, provided dielectric isolation is guaranteed and digging is avoided. However, a necessary condition is to provide total security of operation to guarantee safety to workers and service to customers.
The solver must provide evidence of the effectiveness of its solution
, as well as times, steps and cost for its implementation and removal.
Submissions will be assessed according to the following criteria:
- Digging avoidance
- Time and cost reduction
- Adaptable and reusable equipment and structure
- Resilience to transmission wire drop and all weather conditions
- Realistic to be build
- Easy transport and deployment
- A realistic price estimation
- Degree of innovation
- Quality of the supporting documents
1st round: 7 weeks to present solutions + 2 weeks for evaluation
2nd round: 4 weeks to present solutions + 2 weeks for evaluation
3rd round: 2 to 8 weeks (dependent on solution provided)