Alleviating solar energy congestion in the distribution grid via smart metering communications

Chun Hao Lo, Nirwan Ansari

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

The operation and control of the existing power grid system, which is challenged with rising demands and peak loads, has been considered passive. Congestion is often discovered in high-demand regions, and at locations where abundant renewable energy is generated and injected into the grid; this is attributed to a lack of transmission lines, transfer capability, and transmission capacity. While developing distributed generation (DG) tends to alleviate the traditional congestion problem, employing information and communications technology (ICT) helps manage DG more effectively. ICT involves a vast amount of data to facilitate a broader knowledge of the network status. Data computation and communications are critical elements that can impact the system performance. In this paper, we consider congestion caused by power surpluses produced from households' solar units on rooftops or on ground. Disconnecting some solar units is required to maintain the reliability of the distribution grid. We propose a model for the disconnection process via smart metering communications between smart meters and the utility control center. By modeling the surplus congestion issue as a knapsack problem, we can solve it by proposed greedy solutions. Reduced computation time and data traffic in the network can be achieved.

Original languageEnglish (US)
Article number6189337
Pages (from-to)1607-1620
Number of pages14
JournalIEEE Transactions on Parallel and Distributed Systems
Volume23
Issue number9
DOIs
StatePublished - Aug 10 2012

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Hardware and Architecture
  • Computational Theory and Mathematics

Keywords

  • Smart grid
  • congestion
  • coordination and scheduling
  • cyber-physical system
  • demand and supply
  • distributed generation
  • power surplus
  • renewable energy resources
  • smart metering

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