Dynamic Line Rating CAT1

Reference: NIA_SHET_0004

Status: Complete

Start Date: Apr 2009

End Date: Apr 2018

Funding Licencee(s): Scottish and Southern Electricity Networks and Scottish Hydro Electric Transmission

Contact: SSEN Future Networks Team

Funding Mechanism Network Innovation Allowance

Research Area: None

Core Technology(ies): Low Carbon Generation and Overhead Lines

Estimated Expenditure: £792,200.00

Introduction: To install a CAT-1 Transmission Line Monitoring system on a SHE Transmission line and demonstrate whether it can enable dynamic line rating resulting in safe and cost-effective line operation close to its thermal rating.

Objectives:

Investigate the ease of integration of CAT-1 proprietary software with SHE Transmission’s SCADA system
Evaluate levels of additional capacity achievable on the trial line through use of the installed CAT-1 equipment
Verify the correlation between practical observations and the theoretical model already established
Investigate the extent to which the technology can be applied without need for physical line uprating
Estimate potential Capex and Opex savings from use of dynamic ratings based on the data obtained

Expected Benefits: The DLR system is intended to:

Increase generation output and allow further generation connections to the 132kV circuit
Raise Transmission capacity
Monitor sag in order to provide advance warning of impending clearance violations
Match line ratings to load and weather conditions.

The results of this project have potential for learning in the following areas:

Potential savings in Capex and Opex
Potential levels of additional transmission line capacity achievable by using the method
Unforeseen challenges and risks associated with dynamic ratings
Ease of integrating supplier proprietary systems with existing SCADA system
Complexity of system planning required in case of wider adoption of the method

The learning will be disseminated by conference presentations.