Estimation of the Plant Controller Communication Time-Delay Considering PMSG-Based Wind Turbines

TL;DR

This paper introduces a robust method to estimate communication control delays in PMSG-based wind turbines using PMU data, aiding real-time system stability and control.

Contribution

A new methodology for online estimation of communication delays in wind turbines, enhancing dynamic modeling and system stability analysis.

Findings

Effective delay estimation under simulated fault conditions

Improved dynamic state estimation accuracy

Potential for real-time communication delay monitoring

Abstract

The communication control delay between the inverters and the power plant controller can be caused by several factors related to the communication link between them. Under undesirable conditions, high delay values can produce oscillations in the wind power plant that can affect the rest of the power system. In this work, we present a new robust methodology for wind turbines to estimate the value of the communication control delay using PMU data. Several scenarios are considered where external faults are simulated and the performance of the algorithm is evaluated based on dynamic state estimation of the mathematical model of the wind turbine. In this paper, we have shown that the characterization of the delay can be performed offering the transmission system operator an online tool to identify the most suited communication delay for the plant controller models used in dynamic studies.