Energy Charting and Metrics (ECAM) Tool
Introduction
February 14, 2012
Bill Koran, P.E.Director of Energy Analytics
NorthWrite, Inc.
NorthWrite is a web-based technology company focused on supporting a global network of strategic partners.
• Business formed in 2001•Over 2,000 meters being monitored, growing by 50% in next 2 months• Management team ex-Honeywell • Offices: Minneapolis, Portland OR. • Software as a Service
o Robust database back endo User-friendly web interface
• Focus: Energy• Markets: Commercial; Multi-location enterprise• Channel: Direct, national partner network, OEM’s
Intellectual Property
Data/Application Management - Building information modeling (BIM) - Application Integration Framework - Enterprise Management Platform - OEM Platform/Portal
Analytics - Modeling- Prediction- Benchmarking
Network Operations Center- High volume, scalable hosting infrastructure- Wireless communications/hardware- Remote system data collection- Remote building control (Demand Response)
Green Systems - Automated Energy Star Rating - Lobby kiosk/portal view
Reporting
Utility Bill Analysis - Bill capture, dissection, aggregation
Energy Program Management - Project and task tracking - Metrics and program measurement
Collaboration - B2B Content Subscriptions - Partners, Providers, Customers
NorthWrite Energy Information Management System Architecture
Data WarehouseBMS/SCADA Data
Other Building Systems (Fire, Security, etc.)
Weather DataLogger Data
User/Activity DataApplication Data
Accessed viaEthernet/Web
WirelessEmail
Internet
HTTP / FTP
Cellular Provider NOC
HTTP / FTP
Web Services Web Applications
Business Logic Transactional DB Bus. Intelligence
Messaging Import/Export
Customer / BMS Integration
Subscribe / Publish Reporting
SM
SE
mai
l
Subscribe / PublishEmail Push
Users
Field Operations
SM
S
HTTP
Browser
Users
Login
User Id:
Password:
Authentication / Security
Submit
Configuration
Universal Applications
Market Segment Applications
ChartingEvent MgmtUser Setup….
RTU DiagAHU
Portal Home Page
NOCEIMS Server(s)
TCP/IP
ECAM—My View
• Desktop Energy Information System• Energy Data Organizer• Energy Data Summarizer/Aggregator• Energy Data Analysis Tool• Now becoming an M&V Platform
Over 8,000 lines of codeOver 200 I/O controls
ECAM Background
• Initial building blocks and core code based on automation I developed for my personal use:– Disaggregation of Timestamps– Naming of fields– Automated chart creation and formatting
• Time-series charts• Scatter charts• Calendar charts• 3d charts
– Conversion of utility meter data tables to list format– A notable feature is the provision of scatter charts based on PivotTables
ECAM Background
• Formal development funded by NBI, NEEA and California (CEC, PIER, CCxC)
• FREE Excel based tool
• Currently Version 2.0• Excel 2003/2007/2010
• Many more metrics, charts, and features
• Supports PNNL “Re-Tuning” process
• M&V enhancements in development,funded by NEEA.
ECAM Incorporates Prior Research
• Chart Types based on the PIER report, Web-based Energy Information Systems for Energy Management and Demand Response in Commercial Buildings (2003)
http://www.energy.ca.gov/2003publications/CEC-500-2003-097/CEC-500-2003-097F-A13.PDF
• Point Naming convention from A Specifications Guide for Performance Monitoring Systems
http://cbs.lbl.gov/performance-monitoring/specifications/pdf/PM%20Spec%20Guide%20Version%201_2007-03-23.pdf
May 2002 LBNL/CECWeb-Based Energy Information Systems
LBNL EIS Survey June 2009Data Visualizations
calendar is it possible to display an entire month of consumption profiles (time series)?
daily is it possible to display daily time series in hour-long intervals or less?
summary is it possible to display aggregated usage? - daily, weekly, …
day is it possible to overlay multiple days' trends on a single plot?
point is it possible to overlay multiple time series data points on a single plot?
3D graphicsis it possible to generate three-dimensional surface plots?
x-y plotscan the user plot one trended data point vs. another?
DR status
is it possible to display whether a DR event is occuring and event/communication details?
DR reduction
is it possible to graphically display DR load sheds (vs. load-shape baseline)?
Load profile
Overlay
LBNL EIS Survey June 2009Data Visualizations
• X-y scatter plotting was not a common or standard visualization capability in 2003, and while it has grown some it remains an under-supported feature in today’s EIS solutions.
• Given their power in facilitating diagnostic troubleshooting it is discouraging that only half the tools surveyed include x-y plotting.
ECAM Charting Features, partial list
• Time series
• X-Y (scatter charts from PivotTable!)
• Daily load profile
• 3D and Surface
• Calendar load profiles
• Box Plot Load Profiles
• Schedule Input Confirmation
ECAM Metrics
• Daytype and Occupancy Metrics
• Occupancy and Month-Year combination
• Daytype and Month-Year combination
• Frequency Distributions and Histogram
• Data Summaries• Ratio of typical low to typical high demand
• Percentiles: Max, 95, 90, 75, median, 25, 10, 5, minimum
• Std. Deviations: Average, ±1, ±2, ±3
ECAM Features
• Automatic data pre-processing• Normalization
• W/SF• cfm/SF• kW/ton• gpm/ton
• Equipment status inferred from current or kW
• Easy aggregation to totals/averages• Hourly• Daily• Monthly• Annual
ECAM M&V, In Development
• Scatter charts for daily totals/averages
• Scatter charts for hourly totals/averages
• Load Profile by Weekday (like RTU calculator, but with user choice of data point)
• Daily scatter charts for each day of weekso users can easily see which days are similar
• Easy ad-hoc definition of daytypes like RTU calculator
• ‘Hourtypes’ based on input schedule
ECAM M&V, In Development
• Linear regression.
• Change-Point regressions• 3-parameter
• 4-parameter
• 5-parameter
• 6-parameter
• Combine hourtype/daytype models into complete model
ECAM M&V, In Development
• Uncertainty Analysis
• Residuals Analysis Charts
• Annual extrapolation using TMY3 weather datalike RTU calculator
M&V Output Charts
0
200
400
600
800
1,000
1,200
1,400
20 30 40 50 60 70 80 90 100 110
Avg
Ele
cMtr
1_kW
Ambient Temperature
Electrical Demand vs. Ambient Temp
Avg ElecMtr1_kW 6p Model Min Model Max Model
M&V Output Charts
-400
-300
-200
-100
0
100
200
300
400
500
20 30 40 50 60 70 80 90 100 110
Res
idu
al,
kW
Ambient Temperature, ºF
Residuals vs.Independent Variable
-400
-300
-200
-100
0
100
200
300
400
500
-400 -300 -200 -100 0 100 200 300 400 500
Res
idu
al L
ag 1
ho
ur,
kW
Residual, kW
Residual Lag Plot
Retuning Charts are Worksheet-DrivenCentral Plant Central Plant Central PlantChW_TempIn HoW_TempIn Pmp_ChW_Sec_gpmChW_TempOut HoW_TempOut Bldg_TempOaChW_TempDiff HoW_TempDiffBldg_TempOa Bldg_TempOa
AHU AHU AHU AHU AHUAHU_TempOa AHU_TempSa AHU_Dmpr_OA_%op AHU_TempOa AHU_Dmpr_OA_%opAHU_TempRa AHU_TempSaSp AHU_OA_% AHU_TempRa AHU_Vlv_CC_%opAHU_TempMa AHU_Dmpr_OA_%op AHU_Vlv_HeC_%opAHU_TempSa AHU_Dmpr_RA_%op
AHU AHU AHU AHU AHUAHU_Dmpr_OA_%op AHU_DuctStcPres AHU_Fan_S_%Spd AHU_Fan_R_%Spd AHU_Fan_S_%SpdAHU_Dmpr_RA_%op AHU_DuctStcPresSp AHU_Fan_S_Hz AHU_Fan_R_Hz AHU_Fan_S_HzAHU_Dmpr_ExA_%op AHU_Fan_S_Status AHU_Fan_R_Status AHU_Fan_S_Status
AHU_DuctStcPres AHU_Fan_R_%SpdAHU_Fan_R_HzAHU_Fan_R_Status
AHU scatter AHU scatter AHU scatter AHU scatterAHU_TempSaSp AHU_Vlv_HeC_%op AHU_TempOa AHU_TempOaAHU_TempSa AHU_Vlv_HeC_%op AHU_Dmpr_OA_%op AHU_TempMa
AHU_Dmpr_RA_%opAHU_Dmpr_ExA_%op
ZoneZ_Tl_Dmpr_%opZ_Tl_Rht%Z_OccZ_Temp
ZoneZ_Tl_Dmpr_%op
Load Duration Curve• Cumulative percentage of time at different loads.• For time period and daytype selected
0
200
400
600
800
1,000
1,200
1,400
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
kW
Cumulative Percent of Time
Load Frequency/Histogram• Actual time at different loads• For time period and daytype selected
0
200
400
600
800
1,000
1,200
1,400
1,600
1,800
2,000
>12
00
1150
-12
00
1100
-11
50
1050
-11
00
1000
-10
50
950-
100
0
900-
950
850-
900
800-
850
750-
800
700-
750
650-
700
600-
650
550-
600
500-
550
450-
500
400-
450
350-
400
300-
350
250-
300
To
tal H
ou
rs
kW
ECAM Links
1. ECAM Spreadsheet:file://HQ5F01/ESB/ECAM/ECAM_v2pt0dev61.xla
2. ECAM Description: file://HQ5F01/ESB/ECAM/CommercialBuildings_ECAM_100311.pdf
3. ECAM Users Guide file://HQ5F01/ESB/ECAM/ECAM%20v2%20Users%20Guide%20draft.pdf
4. PNNL Retuning web site http://www.pnl.gov/buildingretuning/index.stm
5. Building Retuning Traininghttp://retuningtraining.labworks.org/training/lms/
6. California Commissioning Collaborative ECAM web sitehttp://cacx.org/PIER/ecam/
ECAM Can FacilitatePowerful Analyses
“Bill,These plots are very telling… I wish I had some of these figures earlier. I just completed a textbook… wherein I would have liked to have included some of these figures.”
T. Agami Reddy, Ph.D., Arizona State University
A New Resource
Applied Data Analysis and Modeling for Energy Engineers and Scientists, by T. Agami Reddy, Ph.D.Springer Science+Business Media 2011.http://www.springer.com/energy/energy+efficiency/book/978-1-4419-9612-1
Using ECAM
Sample Data
Step 1: Define Data
Step 2: Map Points (Optional)
Step 3: Create Schedule (optional)
Step 4: Input Project Dates (optional)
Step 5: Create Metrics and Charts