Broadband Powerline Carrier (BPLC) Presentationamperion.com/white_papers/Amperion Broadband...
Transcript of Broadband Powerline Carrier (BPLC) Presentationamperion.com/white_papers/Amperion Broadband...
Broadband Powerline Carrier (BPLC) Presentation
1Confidential OverviewEmpowering Smart Grid Communications
Nachum SadanJune 2011
BPLC Introduction
• Pilot wire used for transmission line protection is failing
– 17% failure rate according to an SEL study
• Copper based wire is aging and deteriorating due to corrosion
– Copper theft is an increasing problem
• Phone companies are phasing out the service
– Many utilities lease the pilot wire lines
• Alternatives are fiber or conventional PLC
2Confidential Overview
• Alternatives are fiber or conventional PLC
– Today only 9% of US substations are connected by fiber
• Replacing pilot wire with fiber is very expensive and requires a
long deployment process
– BPLC costs 10% of fiber and deploys in days compared to weeks
• Amperion’s BPLC technology was developed jointly with AEP
to solve this problem
– Available now - no need to wait for fiber
BPLC Timeline and Milestones
• 2006 – 46kV 0.5 mile Proof Of Concept test in Charleston WVA
– SCADA and POTT simulation tests
• 2007 – 2008: 69kV 5 mile test in Newark Ohio
– 3 links with repeating; longest point to point link of 2.6 miles
– DOE and AEP funded; 3-way contract with AEP, Amperion, DOE/NETL
• 2009 – 69kV 5 mile network in Newark Ohio
– 2 links with repeating; longest point to point link of 4.4 miles
– Amperion and AEP submit ARRA stimulus application to DOE
3Confidential Overview
– Amperion and AEP submit ARRA stimulus application to DOE
• 2010 – Current differential line protection
– Fault simulation lab and field tests with GE and SEL relays
• 2010 - 138kV deployment over 3.8 miles
• 2011 – Transition from RD&D to commercial deployments
– Candidate locations have been identified and surveyed
– Initial focus is on pilot wire replacements at AEP
– Followed by SCADA expansion applications and leased line replacements
BPLC Communications Over 69kV Lines
Granville Station West Granville Station
Five Mile 69kV Network at AEP Operational in Newark, Ohio Since 2008
DOE recognized the value of BPLC technology and funded part of the R&D work
4Confidential Overview
� Performance– Throughput 10-15 Mbps
– Latency 8-10 msec
– High availability and redundancy
– Monitoring and automatic alerts
� Applications– POTT, DCB and Current Diff. Line protection
– Substation Video Surveillance
– SCADA
– Synchrophasor data
BPLC Communications Over 138kV Lines
Amperion BPLC over 138kV: Bandwidth performance of 10-14 Mbps and Latency of 6-7 Milliseconds - Amperion Phoenix w/BPLC Coupler
5Confidential Overview
East Broad Station Taylor Station
3.8 miles distance
Phoenix SG-5000
Coax cable assemblyInside the station yard
BPLC Coupler• Two 200Mbps BPLC modems• Intelligent switch: • Safe and reliable design
BPLC System Components
Fully Integrated & Field Tested Product Set
6Confidential Overview
Network Management System:• Continuously monitors BPLC modems and links health• Performance graphs: system up time, throughput, latency• Historical reports: daily, weekly, monthly, yearly• Automatic alerts by email
• Intelligent switch: • 6 10/100 Mbps FE ports• 2 1000 Mbps GE ports (Fiber)
• CPU with Amperion embedded SW• DC powered from station battery
• Safe and reliable design• Uses standard utility arrester
Amperion’s Patented Advanced BPLC Communications Platform
BPLC Enables Substation Upgrades
First Generation Substation Next Generation Substation
Analog relays Digital relays
Pilot wire Fiber or BPLC
Conventional PLC Broadband PLC
Proprietary protocols Standard IEC 61850
Substation automation
Sonet TDM and Ethernet IP
7Confidential Overview
Sonet TDM and Ethernet IP
Wide area protection with
Synchrophasors
Aggregation point of feeders
smart grid data and data from
adjacent stations
Fiber will be used in new substations and on HV lines > 138kV
BPLC can be used for station retrofits on sub-transmission lines that are at 138kV and below
Communications Technologies
Ap
pli
cati
on
En
ab
lin
g
HighFiber
WiMAX
BPLC
8Confidential Overview
Cost Effectiveness(capital & operating expenses)
Ap
pli
cati
on
En
ab
lin
g
Low
Low
High
T1
Wireless
Conventional PLC
Leased Lines
Technology Comparison
Conventional PLC Fiber Broadband PLC
Line protection yes yes yes
Backhaul
Communications
no yes yes
Broadband no yes yes
Utilizes existing line yes no yes
Time to deploy medium long short
Circuit disruption medium high low
9Confidential Overview
Circuit disruption medium high low
Distance long long medium with repeating
Cost medium high low
BPLC is closing the fiber gap
PLC FiberGbpsbps
Mbps
Communications Cost Comparison
BPLC can be used where there is no fiber, or to expand an existing fiber network
or as a secondary redundant method to fiber on an existing line
Method Cost of equipment at each station
Cost of communications line
Total cost of a 5 mile solution
Copper based
Pilot wire system
Not available Not available Not available
10Confidential Overview
Conventional PLC powerline carrier system
Cost of equipment and labor to install wave tuner sets, CCVT’s and line traps
No cost
Using own wires
Greater > $150,000
Fiber Attaches to relaying equipment
$75,000 per mile for an OPGW retrofit
Greater > $375,000
BPLC™ $15,000 at each station No cost
Using own wires
$30,000
Ratio 10:1 advantage vs fiber
AEP Lab Test Results
L-90 to L-90
Current Diff
L90+BB
Focus
Over BPLC
One hop
min
Over BPLC
One hop
max
Over BPLC
Two hops
min
Over BPLC
Two hops
max
20.68 24.91 31.25 38.39 40.08 46.19
421 to 421
POTT
421+BB
Focus
Over BPLC
One hop
Over BPLC
One hop
Over BPLC
Two hops
Over BPLC
Two hops
6-7 msec spreadmin-max range
11Confidential Overview
POTT Focus One hop
min
One hop
max
Two hops
min
Two hops
max
27.98 32.79 40.80 44.88 48.06 53.28 4-5 msec spreadmin-max range
• Lab tests were conducted in April-May 2010• All results are trip times in milliseconds
• Test results provided basis to proceed with field testing
Line Protection Field Test with GE & SEL Relays
Field demonstration of current differential line protection with GE & SEL relays
12Confidential Overview
AEP Field Test Results
• Relay trip time for fault at 50% of line
– Eight tests: results range from 38 to 42 milliseconds
• Similar results for faults at 5% and 95 % of line
• No trip for external faults
• Results similar to tests in lab
• About 20 milliseconds slower than a point to point fiber
– Future enhancements in configuration settings and tighter integration
13Confidential Overview
– Future enhancements in configuration settings and tighter integration
improved latency by 10 to 12 milliseconds since Sep. 2010
– End to end latency of 27 milliseconds with less than 1.5 milliseconds of
asymmetry has been consistently measured since May 2011
– Traded bandwidth for reduction in latency
– Optimization of jitter buffer controls and clock synchronization
enhancements
• Success of field tests in Sep. 2010 was the criteria for
commercial deployments in 2011
BPLC vs Conventional PLC Comparison
Feature BPLC Conventional PLC
Supports broadband applications
including current differential as well as
POTT and DCB protection
YES NO
Requires Line Traps NO YES
Operates on two phases providing
redundancy and high availability in
case of GND fault
YES NO (but can be at
additional cost)
15Confidential Overview
case of GND fault
Has elements in series with the HV line NO YES (line traps)
Uses standard lightning arresters YES NO
Faster installation process – minimizes
crew labor and circuit disruption
YES NO
Adds lightning protection and
improves reliability for free
YES NO
Scalable, flexible, safe and low cost YES NO
Line Protection with BPLC
BPLC supports line protection & control requirements:
Current Diff, POTT and DCB
• Low Latency• High Availability
• Redundancy
RELAY A RELAY B
16Confidential Overview
Station A Station B
69kV or 138kV line (or lower)
Station to Station Communications
Utility Data Center
Utility Data Center
BPLC eliminates the need for dedicated leased lines to each sub station
It offers fully redundant communications paths to each substation and a low cost alternative to other methods
Take Out Point
Take Out Point
17Confidential Overview
Station A Station D
Station B Station C
alternative to other methods
BPLCBPLC
BPLC
BPLC Enables Substation Automation
BPLC enables multiple applications:
• Line protection• SCADA communications
• Substation Automation
All over the same infrastructure
RELAY/RTU/IED RELAY/RTU/IED
18Confidential Overview
Station A Station B
138kV or 69kV line (or lower)
Next Generation Multiplexer with BPLC
Data
Voice
Relays MultiplexerPlatform
Serial TDM
Fiber
WAN Comm Options
BPLC provides another communications optionIn addition to Sonet/TDM and Fiber
19Confidential Overview
Relays
RTUs
IEDs
PlatformFiber
BPLC
BPLC option has no restrictions:
Sonet TDM and IP Ethernet
No need to WAIT for Fiber
BPLC with Ethernet IP simplifies network management compared to a more complex Sonet/TDM network
Transmission
Applications
• Line Protection
• Station
Communications
• Station Surveillance
• SCADA Data Collection
Distribution
Applications
• Energy Theft and Loss
• Sensing & Monitoring
• Grid Reliability
• Fault Identification
• Distribution Automation
Future Smart Grid
Applications
• TBD – platform enables
future applications still in
R&D
Enabling Communications PlatformMeets requirements of core applications today with a migration path to the future
Incrementally enables utility applications on top of the same communications platform
20Confidential Overview
Amperion’s Patented Advanced BPLC Communications Platform
• SCADA Data Collection
• Real Time Synchrophasor
Data Streaming
• Substation Automation
• Distribution Automation
• Asset Protection
• Distributed Generation and
Storage
• Demand Response and
AMI
• Demand Dispatch
Amperion Intellectual Property
Multiple patents with worldwide coverage protect Amperion’sbroadband powerline carrier technologies. The patents coverbroadband over powerline communications methods, RF couplingmethods, switching and self healing, grid self powering, and advancedfiltering methods.
21Confidential Overview
BPLC Enables Better Protection
• BPLC can be used to connect substations over transmission,
sub-transmission and distribution lines
• Transmission protection is implemented today with analog
relays using POTT and DCB schemes– Protection schemes can be enhanced with the new generation of digital relays
that support multiple options including current differential
• At the Distribution level coordination will become more difficult with more
22Confidential Overview
• At the Distribution level coordination will become more difficult with more
distributed generation and multiple terminal points
• Current differential is the most accurate and reliable
protection scheme – But requires a reliable and fast communications channel
• Fiber is too costly for lower voltage substations and not
always available – BPLC is the next generation PLC and provides a ready-to-deploy cost effective
alternative
Summary
• Over 622,000 transmission miles in the US require an investment of $36B
and decades to deploy fiber to every substation
• 67% of the US transmission lines are at 138kV or below (sub-transmission
category) and are potential candidates for the BPLC technology
• Deploying BPLC instead of fiber costs less than 10% and can be
accomplished in a much shorter timeframe
• Substation automation requires a reliable broadband communications
channel to backhaul critical data in real time
23Confidential Overview
channel to backhaul critical data in real time
• BPLC can be used to enable station retrofit projects that include upgrading
substation equipment and supporting new smart grid applications
• BPLC can also be used on distribution lines enabling accurate and cost
effective current differential protection over short distances
• Initial applications for BPLC will be pilot wire replacements, leased line
replacements, PLC upgrades, fiber extensions and fiber redundancy and
back up options
• Provider of advanced communications
solutions to electric utilities
• Developed world class Broadband Power
Line Communications (BPLC) technology
and holder of multiple foundational patents
• Innovator of powerline broadband
networks and BPLC® technology for
About Amperion
24Confidential Overview
networks and BPLC® technology for
substation communications required for
T&D smart grid applications
– BPLC products are fully operational
– Commercial deployments at JPS and AEP (2011)
– Large market potential over the next 20 years
Amperion, Inc.
360 Merrimack St.
Lawrence, MA 01843
www.amperion.com