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Interconnection Guidelines For Parallel Operation of Distribution Connected Customer-Owned Generation
Interconnection Guidelines For Parallel Operation of Distribution Connected Customer-Owned Generation
Effective date: January 2001
This document applies to Xcel Energy territories in Michigan, North Dakota, South Dakota and Wisconsin.
(Webmaster note: The size of this document requires breaking it into more manageable chunks to create HTML pages. The table shows the sections linked from the bottom of the page and the contents of each section.)
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Table of Contents
I. Introduction
A. Objectives
B. Authority
II. General Policy
A. Protective Devices
B. Responsibility and Approval
C. Financial Obligation Associated with Parallel Interconnection
D. Compliance with Interconnection Requirements
E. Study Requirements
F. Self Generators
III. Interconnection Process
A. The general process
B. How Generation will be Used
C. Preliminary Application
D. Feasibility study and payment
E. Decision To Continue
F. Final Application
G. Facilities Study Contract & Construction
H. Other Agreements
I. MAPP TPSC and DRS Study and Approvals
J. Upon approval of the Statement of Work Agreement For the Facilities Study and Project Construction
K. Obtaining MAPP Accreditation
IV. Interconnection Technical Requirements
A. General Requirements (do not apply to Closed Transition units)
B. Operating Limits
C. Isolation Power Transformer
D. Energization of Xcel Energy Equipment by the Customer
E. Synchronization of Customer Generation
F. Disconnect
G. Protective Relays
H. Metering
I. Telemetry
J. Automatic Generator Control (Generators 25 MVA and Larger)
K. Special Interconnection Requirements associated with Secondary
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V. Classification of Installations With Customer Generation
VI. Protective Devices for the Interconnection
A. Protective relays
B. Protection Function Requirements
C. Circuit Breakers
D. Single-Phase Devices - Fuses/Oil Circuit Reclosers
E. Automatic Reclosing/Voltage Check Schemes
F. Communication Channel
G. Customer Owned Interconnection Protective Devices
H. Communication with Xcel Energy Operations
VII. Pre-parallel Requirements and Inspection
VIII. Operating Guidelines
IX. Glossary
X. References
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Appendices
Appendix A: Electric Agreements Requirements for Generation Connections
- Agreements Required for Generators Connected Directly to Xcel Energy’s System
- Agreements Which May Apply
- Other Study Agreements
- Summary
Appendix B: Metering and Telemetry Requirements
A. Metering Accuracy, Testing, and Repair
B. Metering and Telemetry Function Requirements
C. Energy Losses
D. Meter Reading
E. Energy Scheduling
F. Billing and Reporting Energy Purchased by Xcel Energy
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Application forms
Please be sure to review the full document through the links at the bottom of the page before filling out an application.
Acknowledgements
The Xcel Energy Delivery System Planning Department compiled this document with input from many others.
Xcel Energy gratefully acknowledges permission granted by Georgia Power Company to utilize their "Guide for Interconnection Requirements and Parallel Operation of Customer Owned Generation" as a basis for several sections.
Special thanks to the project team for contributing expertise while having the patience and understanding to learn from others.
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