Impact of Blockchain Delay on Grid-Tied Solar Inverter Performance

Nanditha Gajanur, Mateo Greidanus, Gab-Su Seo, Sudip Mazumder, Mohammad Abbaszada

Research output: Contribution to conferencePaperpeer-review

3 Scopus Citations

Abstract

This paper investigates the impact of the delay resulting from a blockchain, a promising security measure, for a hierarchical control system of inverters connected to the grid. The blockchain communication network is designed at the secondary control layer for resilience against cyberattacks. To represent the latency in the communication channel, a model is developed based on the complexity of the blockchain framework. Taking this model into account, this work evaluates the plant's performance subject to communication delays, introduced by the blockchain, among the hierarchical control agents. In addition, this article considers an optimal model-based control strategy that performs the system's internal control loop. The work shows that the blockchain's delay size influences the convergence of the power supplied by the inverter to the reference at the point of common coupling. In the results section, real-time simulations on OPAL-RT are performed to test the resilience of two parallel inverters with increasing blockchain complexity.

Original languageAmerican English
Number of pages7
DOIs
StatePublished - 28 Jun 2021
Event12th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021 - Virtual, Online
Duration: 28 Jun 20211 Jul 2021

Conference

Conference12th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2021
CityVirtual, Online
Period28/06/211/07/21

Bibliographical note

See NREL/CP-5D00-79897 for preprint

NREL Publication Number

  • NREL/CP-5D00-80832

Keywords

  • Blockchain
  • delay
  • grid-tied inverter
  • impact
  • optimal control
  • resilience

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