Interoperability Tests for IEC 61968-9 Scott Neumann November 12, 2009.

Interoperability Tests for IEC

61968-9

Scott Neumann

November 12, 2009

Proprietary and Confidential

Why are InterOps Important?

• They prove that a standard works and is more than an abstract document

• They can identify shortcomings that need to be addressed in subsequent editions of a standard

• They force people from different vendors to work together to the benefit of the industry as a whole

• Provides a baseline for comparison of implementations and future extensions

• Provides a benefit to participating vendors in the marketplace

• Test reports help utilities make decisions

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Why is IEC 61968-9 Important?

• IEC 61968-9 is a new IEC standard that defines information exchanges between metering systems and other enterprise systems

• The information exchanges standardized are based on the CIM and include meter readings, controls to end devices (includes meters) and events from end devices and other types of end devices

• Many vendors have actively participated in the development of this standard

• This standard will significantly simplify the integration of advanced metering infrastructures by filling in some key standardization gaps

• IEC 61968-9 is a key standard on the NIST Smart Grid Road Map

• Part 13 aside, part 9 provides the first normative part of 61968

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What is Being Tested?

• The ability of a vendor product to send an/or receive messages with IEC 61968-9 standard profile definitions for payloads using either:• Web services• JMS

• Messaging may use one of the following integration patterns:• Synchronous request/reply• Events using publish/subscribe• Asynchronous request/reply (very important for metering system integration)

• Messages use an IEC 61968 envelope with verb, noun and payload• Messaging details including integration patterns, WSDLs, etc. are

described in EPRI TR 1018795 (basis for future 61968-1-1)

• The XML Schemas provided in IEC 61968-9 are normative

• Intitial InterOp will purposely ‘keep it simple’ … but future InterOps will have increased scope and complexity

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Product Roles

• Some of the types of products that participate in the 61968-9 testing include:• Metering system (head end)• Meter data manager• OMS

• Within a given test, a product can take on one of the following roles:• A service that accepts requests and provides responses, and

also generates events• A client that makes requests and accepts responses• An event listener, that listens for events that may be published

from a variety of sources

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Example Integration Pattern

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Example Integration Pattern

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EPRI Technical Report 1018795

• Describes an implementation approach for IEC 61968 using an Enterprise Service Bus

• Is freely available from EPRI web site• Is intended as the basis for a proposed IEC 61968-1-1

(EPRI has now provided a copyright release to the IEC for this purpose)

• It describes implementation details for one integration approach using JMS and/or web services

• Standard will include extensions, such as:• Asynchronous request/reply pattern• More granular error handling• Events via web services• … TBD

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CIM Users Group Sharepoint

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InterOp ESB Overview

• UISOL provides server for testing

• TIBCO provides ESB software needed for testing to UISOL

• UISOL test bus is based upon EPRI TR 1018795 and IEC 61968-1

• Participant products remotely connect to bus using internet as clients, servers and/or listeners

• SISCO manages test plans and execution

• Test witnesses monitor tests using web browser

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What the InterOp ESB Does …

• Takes a request submitted using JMS or WS and forwards to target server using JMS or WS

• Allows target server to be changed dynamically• Forwards events to event listeners that may be using WS

or JMS• Periodically generates test events• Has a loopback interface that can be used if no target

server is configured• Logs all messages for review, where messages are

correlated to a specific test ID• Has a web user interface for control of tests, monitoring,

changing targets and event publication

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User Interface

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Common Message Envelope

• Use to package payloads for both web services and JMS messages

• Four stereotypes:• RequestMessage

• ResponseMessage

• EventMessage

• FaultMessage

• Header includes 61968 verb and noun

• Request package used to parameterize requests

• Reply package used to return ‘query’ results and errors as needed

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XML for noun goes here

verb, noun goes here


WSDL Fragment

<wsdl:portType name="Operations">

<wsdl:operation name="Request">

<wsdl:input message="ns:RequestMessage"/>

<wsdl:output message="ns:ResponseMessage"/>

<wsdl:fault name="fault1" message="ns:FaultMessage"/>

</wsdl:operation>

<wsdl:operation name="PublishEvent">

<wsdl:input message="ns:EventMessage"/>



</wsdl:operation>

<wsdl:operation name="AsyncReply">

<wsdl:input message="ns:ResponseMessage"/>



</wsdl:operation>

</wsdl:portType>

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Outputs of IOP Efforts

• Official test report to be published by EPRI that describes tests and results by each vendor

• Test plans that can be leveraged for future testing and compliance efforts

• Recommendations for extensions or improvements to the next edition of the IEC 61968-9 standard

• Recommendations for inclusion within proposed IEC 61968-1-1

• A ‘blue print’ that can be leveraged by utilities for the integration of metering systems with other enterprise systems using an ESB

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Benefits

• Helps to advance important Smart Grid standards by validating the standards and validating that multiple vendors can implement IEC 61968-9

• IOP tests are performed using a technical infrastructure that is consistent with a modern enterprise, using web services and JMS

• Provides an infrastructure that can be readily leveraged for expanded testing in the future, supporting testing of other parts of IEC 61968

• No travel by participants is required as the test bus can be accessed remotely, reducing participation costs to all participants and providing opportunities for increased participation

• With EPRI TR1018795 and the documentation provided, utilities should be able to re-implement/re-create compatible integrations using other ESB products

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More Information

• UISOL web site: http://uisol.com

• EPRI web site: http://www.epri.com

• E-mail: [email protected]

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Interoperability Tests for IEC 61968-9 Scott Neumann November 12, 2009.

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