Utility DSO Perspective

Transcription

1 Utility DSO Perspective Bulk System Reliability Assessments Teresa Fallon

2 Outline Ireland s Electricity Structure Collaborative Initiatives Demand Resources & Potentials ti How to Harness the potential 2

3 Irish electricity Industry Other Generators Interconnectors Transmission System Owner Distribution System Owner / Operator Electricity it Suppliers 2.3 million customers Market ESB Generation Others

4 Distributed Resources Embedded Wind/PV Smart Metering Gateway Flexible Loads EV s Heat/Water Smart Distribution Circuits

5 Wind Connections MW System Demand MW 1260

6 ESBN Wind Demonstration Project A. Exploration of Voltage / Var control on Distribution connected windfarms B. Use of voltage regulators to limit voltage rise C. Single transformer cluster stations for windfarms

7 Distributed Resources Embedded Wind/PV Smart Metering Gateway Flexible Loads EV s Heat/Water Smart Distribution Circuits

8 Smart Meter Measurement Communications Technical Operations 8

9 National Smart Meter Customer Behaviour Trial 9

10 Typical daily usage change observed 4% 2% 0% -2% -4% -6% -8% Overall Peak Day Night -10% -2.52%* -8.81%* -2.57%* 0.12%* 00:30 01:30 02:30 03:30 04:30 05:30 06:30 07:30 08:30 09:30 10:30 11:30 12:30 13:30 14:30 15:30 16:30 17:30 17:30 19:30 20:30 21:30 22:30 23:30

11 Distributed Resources Embedded Wind/PV Smart Metering Gateway Flexible Loads EV s Heat/Water Smart Distribution Circuits

12 Minister for Energy with CEO ESB, with positions for national plan for 3,500 EV Charging Points by On-Street 2000 Home 60 Fast charge units

13 Impact on load Profile nd (MW) Dema Charging during low demand :00 06:00 12:00 18:00 Electrical demand on an average day in 2020 Load without EV s Load with controlled charging of 250,000 vehicles

14 Time series analysis 140 Power Dem mand (kw) % EVs 15% EVs Base case :00 15:00 18:00 21:00 00:00 03:00 06:00 09:00 12:00 Time (hr:mm) 14

15 Multiple l Benefits of Active Demand Supplier Follow SMP minimise wholesale costs Offer choice to customer Customer Engagement and Relationship building Distribution Network Operator Manage Local peaks reducing network investment Maximise use Renewable integration through Wind/embedded generator Twinning Reduce network losses through maximum use of Embedded generation and smoothing local demand profile Transmission System Operator Management of Constraints Management of generation requirements System reserve Customer! More choice and control Lower wholesale costs Lower Network Costs Direct Savings for Management

16 Conflicts can occur Scenario TSO DSO Supplier Low Market Price, Windy Day Transmission Constraint No DSO Constraint High Market Price, Windy Day DSO Constraint without load Generation reserve tight Low Market Price, No Wind DSO Constraint load constraint No Transmission Constraint

17 Distributed Resources Embedded Wind/PV Smart Metering Gateway Flexible Loads EV s Heat/Water Smart Distribution Circuits

18 Centralised Distribution System SCADA Control Substations monitored and controlled by DCCs MV DA 38kV 38kV 220kV Commands / Month from DCC s

19 Smart Green Circuit Operational/Continuity Efficiency Improvements

20 Dungloe Smart Green Circuits Three Rural Islands being Assessed Kerry Gurranbane Dungloe Kilcolgan Urban Conservation Voltage Reduction Trial Sallynoggin Kilcolgan Sallynogg Kerry, Gurranbane

21 Operational/ Continuity Technologies Ti Tripsaver Loop Automation FPI ASC

22 Efficiency Demonstrations Embedded Wind Dynamic Network Configuration Closed Loop /Dynamic Configuration 20kV Conversion Low Impedance Transformers Conservation Voltage Reduction Var Control High Power Factor 97% LV voltage optimisation Micro-planet

23 Leverage these Resources at Bulk Level Distribution System Clear Targets Continuity CMI/CML, Quality EN 60160, Efficiency Distribution System Advancements Expand OMS DMS Real times Efficiency Optimisation as well as Continuity Self Healing BULK SYSTEM RELIABILITY? Increase Visualisation Control ESB Networks Remote Network Control > 13,000 Integrate Smart Meters to Operations in practical way Voltage Conversion

24 TSO Dispatch >5MW Work Together 200MW Flexible Load Not leveraged by DSO Clear Identification of requirements from TSO s Reserve tiers for Flexible load parameters Benefit of voltage support Interruptible loads. Define the business case

25 Thank You Any Questions?