southern california edison® cim for environmental data australian cimug meeting february, 2014...

SOUTHERN CALIFORNIA EDISON®

CIM for Environmental Data

Australian CIMug MeetingFebruary, 2014

Henry Dotson, James Horstman - SCEPat Brown – EPRI

Alan McMorran – Open Grid Systems

The Storyof CIM for Environmental Data

Dave had an idea

There’s no Weather model

in CIM…

Let’s do a project!!

Jim had a problem

Jim & Dave hired AlanAlan

… and drafted Henry & Pat

PatHenry

They:•Gathered requirements•Documented use cases•Designed a model•Tested a prototype service

AlanPatHenry

Alan & Henry & Jim & Pat worked.

… and they thought they were done (at least with the hard work)

But then Marty said Nice model..But what about

So Alan & Henry & Jim & Pat & Marty worked some more

AlanPatHenry

Jim Marty

… and the model got better

All that was left was to submit the model

to a CIM IEC Working Group

Nice model..Working Group 16 could use it for

markets!!

Margaret

So Alan & Henry & Jim & Pat presented the model to Working Group 16

JimMargaret

But then Todd & Chris said

Todd & Chris

Nice model..We’d like to implement it

Vendor

So Alan & Henry & Jim & Pat & Todd & Chris worked some more

PatHenry

Jim Todd & Chris

… and the model got better

(& WG16)

Margaret

So WG16 said

Nice model..Let’s propose it

as a new CIM standard

Margaret

… and after commenting, the IEC countries voted to approve it

Nice model..Let’s use it!!

… and everyone lived happily ever after…

HenryJim

Todd & Chris

Margaret

~ The End ~

• So, it’s all true so far..• We’re here:

So Alan & Henry & Jim & Pat & Todd & Chris worked some more

Jim Todd & Chris

(& WG16)

Margaret

• Background and Drivers• Data Requirements

• The Model• Profiles & Transformations• Current Status• Next Steps• Lessons Learned

Extending the CIM for Environmental Data

• The project– Sponsored by Southern Cal Edison, executed

jointly with EPRI and Open Grid Systems– Extend CIM to cover Environmental information– Allow utilities a way to share environmental data

(correlated to other utility information) internally between multiple utility applications in a familiar manner

– Use case driven (SCE and other utilities)

• Use of environmental data is pervasive in utilities– Load forecasting– Pre-storm resource deployment – Restoration– Root cause analysis (lightning strikes)– Litigation

• Current utility picture– Many sources (some external, some internal)

– Procurement silos (multiple providers on department-by-department basis)

– Multiple formats – Manual correlation, communication and data entry within the

utility

• Data requirements– Multiple weather domains

(atmospheric/geospheric/hydrospheric/space)– Multiple time frames (historic, current, future)– Multiple kinds of data (raw, phenomena)– Need for definition of alerts

Model Evolution

• The model was designed to enable the representation of raw environmental data and classified phenomena

• The current work is extending this into modeling what could be classified as derived data (e.g. warning codes, average temperatures over a period)

• There is also requirements to model the parameters and return types of service methods (e.g. requests for derived data)

SOUTHERN CALIFORNIA EDISON®21

Stateless TransformationThe intent was not to “copy & paste” existing standards into the CIM, this benefits nobodyThis does not mean re-inventing the wheel and the aim was to allow bi-directional transformation between CIM for Environmental Data and other standards (e.g. WXXM or TMY3) where they overlapThey were harmonized, not unifiedCIM modeling conventions were be used and existing elements re-used and extended where necessary

A Single Model

The reason for extending the CIM to cover environmental data is that the CIM is more than just an information modelWith the CIM comes processes, tools and formats that are widely used in utilitiesSCE wanted all data exchanges within their enterprise to be defined by a single common modelCIM for Environmental Data thus becomes a package within the overall CIM that covers a large number of systems within a utility

AlertsObservations Forecasts

Phenomenon Phenomenon ValueSets

Analogs CodedValues

• High Level Data Organization

ValueSets

Analogs CodedValues

Environmental Information - Observations & Forecasts

[REVIEW COMPLETE]

Environmental Phenomenon[REVIEW COMPLETE]

Environmental ValueSets[REVIEW COMPLETE]

Environmental Alerts [REVIEW COMPLETE]

EnvironmentalAlertNWScreatedDateTime: 2013-04-13T15:23.000alertKind: iceStormalertAbbrText: “…A WINTRY MIX HEADED FOR THE REGION TONIGHT…”alertFullText: “…ICE STORM WARNING IN EFFECT FROM 10 PM THIS EVENING TO 1 PM…”inEffect: 2013-04-13T22:00:000 – 2013-04-14T13:00:000alertCategoryKind: warning

Example

Environmental Data Profiles

Two profiles were derived from the CIM for Environmental Data UML modelThese profiles were for two interfaces that exchange atmospheric environmental data

Historical weather station data covering the scope of TMY3Current atmospheric data readings as defined by METAR, the most popular format in the world for exchanging atmospheric (and hydrospheric for sea temperature) environmental data

Historical Station Data

• The Station Data covers the data requirements of the National Renewable Energy Laboratory (NREL) TMY3 format

• Multiple AtmosphericValueSets for different time periods can be included in a single message

• Each message is for a single Monitoring Station with a Geographical Location

Current Station Readings

• The Station Readings represent the METAR data as an EnvironmentalAlert

• It supports multiple observations of atmospheric and hydrospheric value sets from different Monitoring Stations

• Different structure from the Historical Station Data due to the different use-cases

• Common classes and attributes shared between profiles

Data Transformation

To test compatibility and demonstrate harmonisation a transform between METAR data in WXXM and CIM for Environmental Data was developedThe CIM for Environmental Data message was defined with the contextual profile defined in the previous section and realised as an XML Schema fileThe WXXM Schema and Sample WXXM message were taken from official WXXM release (1.1).

CIM for Environmental Data Message

The CIM for Environmental Data Message was built to deliver an Environmental Alert for Observed weather readingsThe CIM for Environmental Data profile and XSD were built and generated by CIMToolA Model-Driven Transformation then mapped

WXXM to CIM for Environmental Data

Transform

Majority of elements mapped 1 to 1As the CIM uses SI units and WXXM allows multiple units data translation converted to SI units

mapping WindSpeedType::windSpeed() : CIM::AtmosphericValue{switch{

case (self.uom = UomSpeedType::mS){ result.value := self.value;}case (self.uom = UomSpeedType::mph){ result.value := self.value * 0.44704;}case (self.uom = UomSpeedType::kmH){ result.value := self.value * 0.277777778;}case (self.uom = UomSpeedType::kt){ result.value := self.value * 0.514444444;}

};result.type := CIM::AtmosphericValueKind::WindSpeed;

mapping WindDirectionType::windDirection() : CIM::AtmosphericValue{switch{

case (self.uom = UomAngleType::deg){ result.value := self.value;};case (self.uom = UomAngleType::rad){ result.value := self.value / (180/PI);};case (self.uom = UomAngleType::arcminute){result.value := self.value * 0.0166666667;};case (self.uom = UomAngleType::arcsecond){result.value := self.value * 0.000277777778;};

};result.type := CIM::AtmosphericValueKind::WindDirection;

Transform

Data sets were split into Atmospheric and Hydrospheric where appropriate

mapping AVWX::AerodromeWxType::aerodromeWxValues() : avs : CIM::AtmosphericValueSet, hvs : CIM::HydrosphericValueSet{result.avs.atmosphericValue += self.airPressure.map pressure();result.avs.temperatureValue += self.airTemperature.map temperature(CIM::TemperatureKind::DryBulb);result.avs.temperatureValue += self.dewpointTemperature.map temperature(CIM::TemperatureKind::DewPoint);result.avs.atmosphericValue += self.verticalVisibility.map verticalVisibility();result.avs.atmosphericValue += self.windDirection.map windDirection();result.avs.atmosphericValue += self.windSpeed.map windSpeed();

self.seaWx->forEach(sea){result.hvs.hydrosphericValues += sea.seaWx.surfaceTemperature.map seaTemperature();

mapping TemperatureType::seaTemperature() : CIM::HydrosphericValue{switch{

case (self.uom = UomTemperatureType::C){ result.value := self.value};case (self.uom = UomTemperatureType::K){ result.value := self.value + 273.15};case (self.uom = UomTemperatureType::F){

result.value := (self.value - 32) * (5/9);};

};type := CIM::HydrosphericValueKind::Temperature;

TransformGML Locations were converted to CIM Location + PositionPoint + CoordinateSystemReference

• (The WXXM Test Data contained only single point data but multi-point data could also be converted)

mapping GML::LocationPropertyType::location() : CIM::Location{mRID := getUUID();if (self.abstractGeometry.oclIsKindOf(GML::PointType)) then{

var point := self.abstractGeometry.oclAsType(GML::PointType);result.coordinateSystem := object CIM::CoordinateSystem{

crsUrn := point.srsName;};var pt := point.pos;var x := pt.value->at(1);var y := pt.value->at(2);var z := pt.value->at(3);

var posPoint := object CIM::PositionPoint{xPosition := x.repr();yPosition := y.repr();zPosition := z.repr();

};result.positionPoints += posPoint;

}endif;}

Transform Summary

There were some small gaps identified in the CIM for Environmental Data as part of this work and so the model was enhanced to reflect thisThe majority of data mapped across 1:1The whole transform for a METAR (a standard for Meteorological Observation Data for Aviation) message from WXXM to CIM was ~200 lines code

• Use Cases Under Consideration for Inclusion– Wind Forecast– Solar Forecast– Predict resource requirements for storm (or other event)– Situational Awareness– Customer bill complaint (i.e. it was hot that day, what did you expect

when you ran your air conditioner)– Weather Forecast for Load Forecast– Validate Downwind Concentration Compliance Using Historic

Weather Conditions– Outage Management use of Lightning Strike Information– Sample Request and Response for Environmental Value Set

information– METAR Weather Data Profile– TMY3 Weather Station Data

• Next steps:– Refine and define some useful profiles [3/1/2014]– Determine what standard number, how it fits in

62325 standards library– Write NWIP (New Work in Progress)– Produce CDV (Committee Draft for Vote)• Using jCleanCIM

• Lessons learned It only takes…• Persistence, Time, Money, Patience

More input really does make the model better…Engaging WG members in a project makes it easier

(or possible)…Utility input and vision are vital..

• To learn more– Visit the CIMug website

www.cimug.orgProject>CIM for Weather>Public Documents>

– ContactJim Horstman james.horstman@sce.comHenry Dotson henry.dotson@sce.comAlan McMorran alan@opengrid.comPat Brown pbrown@epri.com

Questions?

southern california edison® cim for environmental data australian cimug meeting february, 2014...

environmental data slide

southern california

story of cim

environmental data dave

derived data slide

environmental data jim

data entry

data exchanges

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