Continuous Monitoring on the SSE Networks Transmission System

Transcription

1 10 th Universities High Voltage Network Colloquium 18 th - 19 th January 2017, GCU, Glasgow, Scotland Continuous Monitoring on the SSE Networks Transmission System The Need for Standards, Specifications & Innovation Dr. Gerry Cleary, Scottish & Southern Electricity Networks 1

2 Continuous Monitoring on the SSE Networks Transmission System The Need for Standards, Specifications & Innovation Dr. Gerry Cleary, January 2017

3 Career History Dates Experience Description R&D University of Strathclyde Partial Discharge Detection in Power Transformers using UHF Monitoring ScottishPower Secondment - Plant Monitoring on the ScottishPower Transmission Network Power Systems Project & Consultancy Services (PCS), Hyder & Arcadis Fast Transient Analysis & Insulation Co-ordination Studies, Harmonic Studies and Earthing Measurement & Design 2015-Present SSE Networks Technical Standards Engineer - Standards, Specifications & Innovations 3

4 Agenda Safety- Priority - if it is not safe we don t do it Role of Standards, Specifications and Innovations Team Why Innovate? Advanced Technologies on the SSE Transmission Network Overview of Caithness Moray HVDC Scheme Continuous Monitoring on the SSE Networks - Transmission System Case Study: Keith Substation Partial Discharge Monitoring Project Next Steps Q&A 4

5 Need for Standards, Specifications & Innovations Safety Standards Specifications Stakeholder Engagement Clear Definition Level of Detail Innovations Source: IE&T, November 2016 Why Innovate? Responsibility to Deliver Power and Manage Transmission System Provide Value for the customer Regulated Industry Encourages Innovation (RIIO: Revenue = Incentives + Innovation + Outputs) 5

6 Site Practicalities Specification & Discussion are Key Network Reinforcement: System Planning Optioneering Site Selection: Substn. A & B Route Selection: Subsea Surveys & Third Parties Safety, Environment & Legal Specification (Cable) Installation & Mechanical Protection Port Glasgow Greenock Dry Dock: Pipe Laying Ship Commissioning, On-Line Monitoring & Repair 6

7 Some Examples of Advanced Technologies on the SSE Network HVDC: Caithness - Moray SVC (Static VAr Compensator) MSCDN (Mechanically Switched Capacitor Damping Network) Composite Poles for Overhead Lines Gas Insulated Switchgear Gas Insulated Busbar Subsea Cable Circuits 7

8 Subsea Cable Transmission Circuits System Design System Planning Accurate Specification is Critical Safety, Logistics, Cost, Performance Stakeholders: Electrical, Civil, Environmental, Operational, Consultants, Contractors & Other Suite of Specifications: from Subsea Cable Surveys, Cable System Design, Installation, Testing & Maintenance Operation & Repair of Emerging Technologies References [1] SSE Press Release, Keeping the Lights On. [2] Nexans, O Angoulevant, Offshore Cables 8

9 Overview of HVDC (Caithness-Moray ) Potential Advantages Some Challenges [1] Reduced Visual Impact [1] Rapidly Changing Technology [2] Control (Frequency, Power Flow & Stability) [2] Difficult to Standardise [3] Reduced Short Circuit Currents on AC System [3] Cost of Converter Stations [4] Connection of Asynchronous Grids [4] Operation & Maintenance Indicative distances - to be confirmed on a per project basis References [1] Electrical Engineering Portal, Costs of HVDC Transmission [2] ABB, HVDC Technical Brochure 9

10 Overview of Blackhillock Substation ~ 1.1B Investment, ~100 miles of cable 400kV (GIS), 132kV (GIS), 275kV (AIS), BOWL (Offshore Wind) HVDC Converter Station References [1] Blackhillock Substation Early Construction Stage 10

11 Partial Discharge (PD) Testing & Continuous Monitoring PD Testing at Commissioning PD Testing: Initial Site Investigation PD Monitoring: Milton of Craigie, Keith & Tealing Substations Potential for Further PD Monitoring? Gas Monitoring Distributed Temperature Sensing (DTS): Kintyre Hunterston Subsea Cable Fault Recorders Harmonic Recorders 11

12 Case Study: Keith Substation Partial Discharge Monitoring Project Site Selection Substation Wide Monitoring HFDE, Elimpus & HVPD Acquisition of PD Signals Asset Management 12

13 Next Steps: Gather Lessons Learned Specification Refinement Interaction of AC & DC Systems Impact of Long Subsea Cable Circuits Operation & Repair of Emerging Technologies Condition Monitoring Telecommunications Infrastructure 13

14 Any Additional Questions & Answers? 14