IEEE 1547

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IEEE 1547 (Standard for Interconnecting Distributed Resources with Electric Power Systems) is a standard of the Institute of Electrical and Electronics Engineers meant to provide a set of criteria and requirements for the interconnection of distributed generation resources into the power grid in the United States.

Purpose[edit]

"This document provides a uniform standard for interconnection of distributed resources with EPSs [Electric Power Systems]. It provides requirements relevant to the performance, operation, testing, safety, and maintenance of the interconnection."[1]

With the increased adoption of distributed resources in the present and future, a set of standards regarding their usage in the grid becomes increasingly important for the overall reliability, safety, and cost. Furthermore, the lack of a concrete national standard was seen as a roadblock to the implementation of new distributed generation projects. The standard is intended to be universally adoptable, technology-neutral, and cover distributed resources as large 10 MVA.

Development[edit]

In early 1999, the IEEE approved the undertaking of P1547. With the support of the United States Department of Energy, the project was initiated on a fast-track basis, which would halve the usual development time. The draft standard was revised 10 times before P1547/Draft 11 was approved with a 91% vote in February 2003. It was then approved by the IEEE Standards Board on June 12, 2003, and received an ANSI designation on October 20, 2003.[2]

Risk of System Disturbance[edit]

IEEE 1547-2003 has a tight underfrequency protection setting of 59.3 Hz which poses a risk for grid stability. In case of an underfrequency situation,[3] e.g. after a major loss of generation, the situation may get worse when a multitude of distributed energy resources (DER) disconnect simultaneously. IEEE 1547-2003 demands also an obligatory overfrequency disconnection at 60.5 Hz. With a rising share of distributed generation there is a possibility of triggering a non-linear oscillator in the multi GW range within the transmission grid. In Europe, this problem with similar standards has already been addressed by ENTSO-E.[4]

Energy Policy Act of 2005[edit]

“Interconnection services shall be offered based upon the standards developed by the Institute of Electrical and Electronics Engineers: IEEE Standard 1547 for Interconnecting Distributed Resources With Electric Power Systems, as they may be amended from time to time.”[5]

The Energy Policy Act of 2005 established IEEE 1547 as the national standard for the interconnection of distributed generation resources in the United States of America.

Related Standards[edit]

Currently, there are six complementary standards designed to expand upon or clarify the initial standard, two of which are published, and the other four still in the draft phase.

  • IEEE 1547.1, published in 2005, further describes the testing of the interconnection in order to determine whether or not it conforms to standards.
  • IEEE 1547.2, published in 2008, provides a technical background on the standard.
  • IEEE 1547.3, published in 2007, details techniques for monitoring of distributed systems.
  • IEEE 1547.4, published in 2011, is a guide for the design, operation, and integration of conforming systems.
  • IEEE 1547.5, is designed for distributed sources larger than 10 MVA
  • IEEE 1547.6, published in 2011, describes practices for secondary network interconnections.
  • IEEE 1547.7, published in 2013, provides distribution impact studies for distributed resource interconnection.

External links[edit]

References[edit]

  1. ^ Vaughn (2007-12-21). "IEEE SCC21 1547 Home Page". IEEE. Retrieved 2008-01-26. 
  2. ^ Thomas Basso and N. Richard Friedman (November 2003). "IEEE 1547 National Standard for Interconnecting Distributed Generation: How Could It Help My Facility?". Distributed Energy. Retrieved 2011-08-28. 
  3. ^ E. Grebe, D. Klaar et al. (April 2004). "Final Report of the Investigation Committee on the 28 September 2003 Blackout in Italy". Brussels: UCTE. Retrieved 2011-08-28.  Please compare with Chapter 6.3.5 and 6.4.1: "For instance, due to its significant penetration level, the effect of the distributed generation may no longer be neglected and appropriate technical requirements need to be defined." p. 94
  4. ^ Letter, 18 July 2011 from Mr. Dobbeni, President of ENTSO-E to Mr Oettinger, European Commissioner for Energy
  5. ^ "Energy Policy Act of 2005 SEC 1254" (PDF). August 5, 2005. Archived from the original on 2007-12-01. Retrieved 2008-01-26.