sas epri guidelines for implementing substation automation using iec 61850

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Guidelines for Implementing Substation Automation Using IEC61850, the International Power System Information Modeling Standard

Technical Report

Guidelines for Implementing Substation Automation Using IEC61850, the International Power System Information Modeling Standard

1008688

Final Report, December 2004

EPRI Project Manager L. van der Zel

EPRI 3412 Hillview Avenue, Palo Alto, California 94304 PO Box 10412, Palo Alto, California 94303 USA 800.313.3774 650.855.2121 askepri@epri.com www.epri.com

DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITIESTHIS DOCUMENT WAS PREPARED BY THE ORGANIZATION(S) NAMED BELOW AS AN ACCOUNT OF WORK SPONSORED OR COSPONSORED BY THE ELECTRIC POWER RESEARCH INSTITUTE, INC. (EPRI). NEITHER EPRI, ANY MEMBER OF EPRI, ANY COSPONSOR, THE ORGANIZATION(S) BELOW, NOR ANY PERSON ACTING ON BEHALF OF ANY OF THEM: (A) MAKES ANY WARRANTY OR REPRESENTATION WHATSOEVER, EXPRESS OR IMPLIED, (I) WITH RESPECT TO THE USE OF ANY INFORMATION, APPARATUS, METHOD, PROCESS, OR SIMILAR ITEM DISCLOSED IN THIS DOCUMENT, INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, OR (II) THAT SUCH USE DOES NOT INFRINGE ON OR INTERFERE WITH PRIVATELY OWNED RIGHTS, INCLUDING ANY PARTY'S INTELLECTUAL PROPERTY, OR (III) THAT THIS DOCUMENT IS SUITABLE TO ANY PARTICULAR USER'S CIRCUMSTANCE; OR (B) ASSUMES RESPONSIBILITY FOR ANY DAMAGES OR OTHER LIABILITY WHATSOEVER (INCLUDING ANY CONSEQUENTIAL DAMAGES, EVEN IF EPRI OR ANY EPRI REPRESENTATIVE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES) RESULTING FROM YOUR SELECTION OR USE OF THIS DOCUMENT OR ANY INFORMATION, APPARATUS, METHOD, PROCESS, OR SIMILAR ITEM DISCLOSED IN THIS DOCUMENT. ORGANIZATION(S) THAT PREPARED THIS DOCUMENT Utility Consulting International (UCI)

ORDERING INFORMATIONRequests for copies of this report should be directed to EPRI Orders and Conferences, 1355 Willow Way, Suite 278, Concord, CA 94520, (800) 313-3774, press 2 or internally x5379, (925) 609-9169, (925) 609-1310 (fax). Electric Power Research Institute and EPRI are registered service marks of the Electric Power Research Institute, Inc. EPRI. ELECTRIFY THE WORLD is a service mark of the Electric Power Research Institute, Inc. Copyright 2004 Electric Power Research Institute, Inc. All rights reserved.

CITATIONSThis report was prepared by Utility Consulting International (UCI) 20370 Town Center Lane, Suite 211 Cupertino, CA 95014 Principal Investigators F. Cleveland R. Ehlers This report describes research sponsored by EPRI. The report is a corporate document that should be cited in the literature in the following manner: Guidelines for Implementing Substation Automation Using IEC61850, the International Power System Information Modeling Standard, EPRI, Palo Alto, CA: 2004. 1008688.

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PRODUCT DESCRIPTION

This report provides guidelines for substation planners, project managers, substation engineers, information technologists, and substation integrators on informational issues related to substation automation (SA) when IEC61850 standards are used. Results and Findings Substation automation is far more than just the automation of substation equipment. It is the first step toward the creation of a highly reliable, self-healing power system that responds rapidly to real-time events with appropriate actions and that supports the planning and asset management necessary for cost-effective operations. Automation does not simply replace manual proceduresit permits the power system to operate in an entirely new way based on accurate information provided in a timely manner to the decision-making applications and field devices. Substation automation would not have been feasible a few years ago. Communication technologies simply were not available to handle the kinds of demands imposed by the complexity of SA requirements. However, communication standards have now been developed that can address many of these demands. In particular, the international power system information modeling standard IEC61850 provides solutions to automation issues using state-ofthe-art object-modeling technologies. IEC6185 also provides the key capabilities needed for the increasingly sophisticated requirements of data management. Challenges and Objectives This report provides guidelines on the informational issues related to SA in regard to the use of IEC61850 standards. Substation automation is a new challenge for the utility industry. These guidelines provide the overall vision as well as the specific steps that should be taken for successful implementation of this new enabling capability. The guidelines also build on the work undertaken in E2Is (one of EPRIs family of companies) IntelliGrid Architecture project by using specific examples from SA functions to show how these functional requirements drive the need for the capabilities provided by IEC61850. This guideline is organized by the different stages of SAplanning, specifying, implementing, deploying, and operations/maintenance. It is expected that most readers will begin with the report overview and the vision for substation automation (Sections 1 and 2) as an introduction to the broader issues of power system management, information technologies, and SA. Readers can then refer to those report sections that meet their specific areas of interest. The document, therefore, is designed so that each section can stand alone.

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Applications, Values, and Use It is not easy to understand how the various parts of the IEC61850 documents work together. Therefore, this guideline is designed to help the users of SA automation by describing the IEC61850 standards in more user-friendly terms and by identifying the available options for automation. Even though most users will rely on equipment vendors to implement the actual IEC61850 standards, it is important to have a basic understanding of the options available and of how the various object models work together. Additional capabilities are being added to the IEC61850 series of standards, including configuration language standards and conformance test planning. When these standards are finalized, they should be included in future updates to these guidelines. EPRI Perspective Organizations such as the IEC do excellent work in developing international standards. EPRI plays a key role in translating those standards into understandable language and discussing the different options and issues related to the standards. E2I sponsored the development of the IntelliGrid Architecture, which defines the strategic vision for developing the vital communications and information infrastructure required for reliable, efficient, and secure power system operations. E2I recommends international standards and best practices to meet those requirements. One of the key recommendations is the use of IEC61850 in substation automation. Approach These guidelines were developed to describe the overall vision of SA to help ensure that the paradigm shift provided by this new enabling technology is appreciated by the utility industry. The guidelines describe the steps required in each phase of implementation with IEC61850. Keywords IEC61850 IntelliGrid architecture Substation automation Utility communications architecture (UCA)

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CONTENTS

1 AN OVERVIEW OF IEC61850 SUBSTATION AUTOMATION GUIDELINES...................... 1-1 1.1 Identifying the Purpose, Scope, and Audience for IEC61850 Substation Automation Guidelines.............................................................................................. 1-1 Purpose............................................................................................................ 1-1 Scope ............................................................................................................... 1-1 Audience .......................................................................................................... 1-1

1.1.1 1.1.2 1.1.3 1.2 1.3 1.4 1.5 1.6 1.7 1.8

The Vision for Substation Automation ....................................................................... 1-4 Project Management for Substation Automation Projects.......................................... 1-5 Developing Functional Requirements for Substation Automation Equipment, Systems, and Applications........................................................................................ 1-6 Specifying Functional Requirements and IEC61850 for Substation Automation ........ 1-7 Implementing IEC61850 in Equipment and Systems................................................1-10 Installing IEC61850 Equipment and Systems in Substations....................................1-11 Key Points................................................................................................................1-11

2 THE VISION FOR SUBSTATION AUTOMATION ............................................................... 2-1 2.1 2.2 2.3 2.4 2.5 Purpose and Audience for This Section .................................................................... 2-1 Thinking Outside the Box Paradigm Shift of Substation Automation....................... 2-1 Enabling Information Technologies That Enhance Substation Automation Capabilities............................................................................................................... 2-3 The Benefits of Substation Automation for Different Users........................................ 2-5 Information Technology Requirements That Drive Substation Automation Designs .................................................................................................................... 2-7 IntelliGrid Architecture Framework Contents..................................................... 2-9 Abstract Modeling............................................................................................2-10 Information Security Planning and Management..............