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This content will become publicly available on July 25, 2019

Title: Improving Primary Frequency Response to Support Networked Microgrid Operations

Individual microgrids have proven their ability to provide uninterrupted power to critical end-use load during severe events. Building on the performance of individual microgrids during extreme events, there has been an increasing interest in the operations of network microgrids. By networking microgrids during extreme events, it is possible to share resources, increase the duration for which they can operate islanded, and increase the resiliency of critical end-use loads. While there are benefits to networking the operations of resiliency-based microgrids, the switching operations that they require introduce transients which can result in a loss of dynamic stability. The issue of dynamic stability is especially acute in microgrids with high penetrations of inverter-connected generation, and a correspondingly low system inertia. While the low-inertia of these microgrids can be increased by over-sizing the rotating generators, the increased capital and operating costs can become a barrier to deployment. This work will present a method of augmenting primary frequency controls to support the switching transients necessary for the operation of networked microgrids, without the need to over-size rotating machines.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [5] ;  [6]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Energy Science and Technology Directorate
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Optimization and Control
  3. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  4. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Energy and Efficiency Division
  5. Washington State Univ., Pullman, WA (United States). School of Electrical Engineering and Computer Science; Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States). Center for Power and Energy
  6. Dept. of Energy (DOE), Washington DC (United States). Office of Electricity Delivery and Energy Reliability (OE)
Publication Date:
Grant/Contract Number:
AC0576RL01830
Type:
Accepted Manuscript
Journal Name:
IEEE Transactions on Power Systems
Additional Journal Information:
Journal Name: IEEE Transactions on Power Systems; Journal ID: ISSN 0885-8950
Publisher:
IEEE
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE Office of Electricity Delivery and Energy Reliability (OE)
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; conservation voltage reduction; distribution system analysis; power simulation; microgrids; power modeling; resiliency; smart grid; frequency control; transient analysis; voltage control; switches; frequency response
OSTI Identifier:
1461818