International Approaches for an Integrated Grid

Transcription

1 International Approaches for an Integrated Grid Matt Wakefield Director, Information, Communication and Cyber Security (ICCS) June 15, 2016

2 Together Shaping the Future of Electricity 2

3 Integrated Grid: The Vision Power System that is Highly Flexible, Resilient and Connected and Optimizes Energy Resources 3

4 Increasing Penetration Level Increasing Penetration Level Impacts of High Penetration PV Deployment Understanding PV System Impacts Key to defining a utility solar strategy is assuring that the resource is properly grid integrated Benefits Challenges Energy, Capacity & Ancillary Central Generation Generation Capacity & Ancillary Service Frequency Support Transmission Voltage & Frequency Stability Loss Reduction Sub-transmission Increasing Re-dispatch Transmission Constraint T&D Avoided Capacity Loss Reduction Substation Distribution Reverse Power Flow Reactive Power Balance Prevalent Voltage, Capacity & Protection Issues Voltage Support Customer Localized Voltage & Capacity in Long Circuits 4

5 EPRI s Action Plan to Achieve the Strategic Direction Inform Stakeholders on Key Concept & Challenges Benefit/Cost Framework for Different Designs Global Demonstrations Data, Information and Tools Global Collaboration to Establish the Science, Engineering and Economics 5

6 Integrated Grid Technology Pilots Gaining Practical Experience The Integrated Grid Technology pilots fill knowledge gaps through experience Learning by Doing Exploring additional Pilots in Japan and around the world 6

7 Pilot Profile: Arizona Public Service (APS) Solar Partners Program utility-owned rooftop PV systems w/ smart inverters 4-8kW each (10MW total capacity) 4 MW energy storage Central control system 20 Research Questions Technical performance Smart inverters Battery Storage Communications Distribution Impacts Operations Planning Protection 7

8 Solar Partners Program Research Questions Example: What are the bandwidth requirements for different smart inverter approaches? Example: How well do smart inverters meet expectations? Example: Can utilities manage voltage through smart inverters, storage, or a combination of both? COMMUNICATIONS EQUIPMENT DEFFERAL INVERTER CONTROL & FUNCTIONALITY STRESS & VOLTAGE MANAGEMENT ENERGY STORAGE Example: Can west-facing PV reliably reduce peak load on a distribution circuit? Example: How to configure smart inverters for managing distribution voltage or power factor? 8

9 Progress to Date Smart Inverter Key Insights: Fixed Power Factor and volt-var demonstrated ability to absorb and export reactive power Power curtailment available, but inverter response not immediate Curtailment based on inverter ratings, not output. Operators must take this into account APS Solar Partners Program: 2015 Research Update EPRI Report ID

10 General 4 year Timeline of Pilot Projects Key Areas of Focus Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Project Kick-Offs Technology Assessment Field Preperation Technology Integration Power System Analysis Field Demo & Analysis Cost-Benefit Assessment 10

11 Lessons Learned from IG Pilots Cross-cutting utility teams are needed No procurement specifications exist for community scale PV Consistent application of existing standards enables more seamless integration between manufacturers and utilities Standards for performance is critical Example: +/- 5% voltage accuracy with smart inverters is not enough when using for grid support DER communication and control is not yet utility-grade Utility hands-on experience is vital to technology readiness for the Integrated Grid 11

12 EPRI Technology Transfer Plan Project Fact Sheets Progress Reports & Webcasts Quarterly Newsletters Annual Report EPRI Integrated Grid Pilot Projects 2016 Update Coordination Across the Industry is Beneficial to Everyone 12

13 Together Shaping the Future of Electricity 13