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