Journals Information
Universal Journal of Electrical and Electronic Engineering Vol. 10(2), pp. 13 - 28
DOI: 10.13189/ujeee.2023.100201
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Investigating the Impact of Communication Errors on the Transient Characteristics of Power Systems
Ahmed Abdolkhalig *
Department of Electrical Engineering, The University of Tobruk, 4004, Tobruk, Libya
ABSTRACT
As communication errors change in the dynamic properties of the protection relay and control system, the preset relay tripping time is no longer applicable. To ensure reliable operations and avoid any problem linked to grid stability, the impact of these errors on the transient characteristics of the power system must be investigated. To investigate the impact, a very simple and effective scheme based on an Ethernet communication network is proposed in this paper. The scheme relies on Inverse definite minimum time (IDMT) digital over-current relay which has two added functions, one is for phasor estimation and the other is for detecting the delays in tripping time. First, the IDMT over-current relay is fed by fundamental amplitude from the phasor estimator through an Ethernet-based network. Next, the delay that arises due to the insufficient allocation of bandwidth or noise is detected and measured by the detection function. Finally, to evaluate the impact of the communication errors on tripping time and consequently, on the transient characteristics of the power system, a test system consisting of a plant and two sources is simulated and analyzed using MATLAB software in combination with True-Time software. The results show that impact of these errors is dramatic and cannot be ignored especially when insufficient bandwidth is allocated.
KEYWORDS
Digital Relay, Fault Clearing Time, Phasor Estimation, Transient Stability
Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Ahmed Abdolkhalig , "Investigating the Impact of Communication Errors on the Transient Characteristics of Power Systems," Universal Journal of Electrical and Electronic Engineering, Vol. 10, No. 2, pp. 13 - 28, 2023. DOI: 10.13189/ujeee.2023.100201.
(b). APA Format:
Ahmed Abdolkhalig (2023). Investigating the Impact of Communication Errors on the Transient Characteristics of Power Systems. Universal Journal of Electrical and Electronic Engineering, 10(2), 13 - 28. DOI: 10.13189/ujeee.2023.100201.