Detection and Correction Matrix-Based Wide Area Damping Controller Design to Tolerate All Kinds of Communication Failures

Abstract

The objective of this article is to design an uncomplicated wide-area damping controller (WADC) to damp out the inter-area oscillations and to tolerate different communication failures. To design a WADC, remote signals are required and these can be transferred to the control centre through phasor measurement units. In reality, each and every time, it is not possible to receive the required data without loss or disturbance. This affected data can creates unwanted WADC output signals when combining with controller feedback gain matrix. Therefore, to address this issue, a detection & correction matrix (DCM) based WADC is proposed in this work by eliminating these unwanted output signals. It can be accomplished through by modifying the feedback gain matrix as per the loss of signals. This proposed controller can be designed by means of a state feedback control technique with suitable modifications in the feedback gain matrix as per the communication path failures. The required modification of feedback gain matrix can be done in real-time by making changes in respective columns and rows of a bad data detected generator. The IEEE-68 bus test system is considered to validate the proposed controller’s effectiveness by simulating all kinds of communication failures and disturbances.

Keywords

• Communication failures
• detection and correction matrix
• inter area oscillations
• loss of data
• robust control
• wide-area controller