Smart Grid Smart Grid Our Mission Our Mission Seattle City Light - - PDF document

Smart Grid Smart Grid

Our Mission Our Mission

Seattle City Light is dedicated to exceeding our customers’ expectations in producing and delivering environmentally responsible, safe, low cost and reliable power.

The Smart Grid Definition The Smart Grid Definition

Smart Grid is a portfolio of systems and technologies designed to provide operational, financial and environmental benefits by integrating modern energy, communications and information technologies with electrical generation, power delivery and consumer electrical systems. Smart Grid does not emerge from a single rollout of a revolutionary technology, but from strategic planning and initiatives all aimed at a long-term vision supported by a technology and customer focused organization.

Smart Grid Functions (DOE) Smart Grid Functions (DOE)

1. Motivating - Enable Active Participation by Customers 2. Accommodating - Accommodate All Generation and Storage Options 3. Opportunistic - Enable New Products, Services, and Markets 4. Quality-focused - Provide Power Quality for the Digital Economy 5. Efficient - Optimize Asset Utilization and Operate Efficiently 6. Intelligent - Anticipate and Respond to System Disturbances 7. Secure - Operate Resiliently Against Attacks and Natural Disasters

Generation Transmission / Substations Distribution System Customer End Systems

Seattle City Light Smart Grid Vision Seattle City Light Smart Grid Vision

Sensors Capacitors Switches Sensors Capacitors Switches Substation Modernization Distribution Automation Advanced Meter Infrastructure AMI Smart Substation Energy Delivery Optimization Advanced Distribution Automation Distributed Generation Outage Management System Work and Asset Management System Meter Data Management System Energy Management System Distribution Management System Customer Information System Energy Storage Home Energy Management Systems Electric Vehicles Demand Response

IT Systems

Fiber Optic Backbone Field Smart Grid Communications

Smart Grid Systems Electrical Power Systems

Data Integration Mobile Workforce Management System Generation Automation

Geographic Information System

Why Automation?

• Improve System Reliability
• Maximum Use of Assets
• Improve Efficiency of Operations
• Provide a Safer Operation Environment
• Visibility

Substation Modernization

Standard practice is to implement automation for new major substations

Substation Modernization

(cont.)

Inventory:

• ~ 422 Breakers
• ~ 54 Transformers
• ~ 5000 Relays

Old Transformer Breaker New Transformer New and Old Relays

Distribution Automation Plan

• Monitor Equipment

– Line switches – Transformers – Line Loading – etc

• Automate the most critical circuits for

enhance reliability

• Automate equipment for critical loads

Benefits

• Reduces time to troubleshoot and isolate problem
• Getting real-time information to make quicker

decisions

• Remote Control for faster restoration
• Avoid the system collapse or cascade
• Remote switching versus manual switching
• Optimize asset utilization and efficiency

Substation Modernization is a foundation to Smart Grid

O ur Current Metering Infrastructure

408,000 meters with an average age of 30 years

10000 20000 30000 40000 50000 60000 70000 80000 90000 < 10 10 to 20 20 to 30 30 to 40 40 to 50 50 to 60 60 >

Meter Age

Meters by Age in Years

Why We Need New Meters

• The current electro-mechanical

meters are obsolete and out of production

• As meters age, we lose revenue by

under-measuring usage

• On site meter reading has high labor

costs

• The old meters are not “Smart Grid

capable”

The Solution: Advanced Metering Infrastructure (AMI)

• Replaces 408,000 aging meters with

new digital meters

• Adds a two-way communication

system with immediate benefits

• Provides new power

management capabilities

AMI Goals

• Improve Customer Experience
• Operate a safe and environmentally

responsible metering system

• Provide “Real Time” usage information
• Enhance Outage Management System
• Support future Smart Grid

capabilities

AMI Benefits

• Increased customer satisfaction
• Faster outage response
• Flexible billing/rate options
• Real time information to support

conservation efforts

• Reduced carbon foot print
• Reduced labor and
• perational costs

AMI O ptions

• Ideal: Full Deployment commencing

in 2011 over a 5 year period.

• Delayed Deployment with a small

ramp up in 2011-2012 with full implementation complete within 7 years.

• Accelerated Meter Replacement Only

without communication system for AMI

• Status Quo: Replace obsolete

meters with digital meters at current level of capital spending

AMI – Worth the Cost

• We will have to replace all of our meters
• For an additional 15%, we gain the benefits
• f AMI
• The project has long term benefits

Overall A MI Project Costs

Meter Replacement ($86.4M) Other AMI ($14.6M)

AMI – Better Return O n Investment

AMI vs Meter Replacement

(30,000,000) (25,000,000) (20,000,000) (15,000,000) (10,000,000) (5,000,000) 5,000,000 10,000,000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Project Year

Net Benefit/Cost

AMI Project Meter Replacement

Initial higher costs Long term higher benefits

AMI Project Plan

• Two year ramp up (2011-2012) for pre-

project preparation

• Five year project implementation (2013 –

2017)

• Use in-house labor as much as possible
• Integrate with other

technology projects