Abstract
Power distribution systems are profoundly inclined to disturbances like untimely switching of breakers & relays, sympathetic tripping, and uncertainties regarding fault location. Thus, system stability and reliability are greatly affected. In this way, situational awareness and system integrity are the crucial factors in developing power system security, as it empowers successful decision making & timely reaction by the operators to any disturbance and also maintaining continuity of power supply. This paper focuses on the enhancement of situational awareness by fault location through fault passage indicators (FPI) to improve nominal impedance-based methods in distribution networks. Also, the proposed method is validated by comparing it with Intelligent Electronic Device (IED) based fault location method. Further, simultaneous reconfiguration of the system is incorporated to maintain the continuity of supply. The analysis has been tested on IEEE 33 bus distribution system.
Highlights
Nowadays blackouts in power systems is a major concern for utilities, especially in distribution systems
This paper focuses on the enhancement of Situational Awareness (SA) by perceiving data of the fault and determining its exact or suspected locations by fault passage indicators (FPI) placement using binary approach so to improve the impedance-based approach
In IEEE 33 bus distribution network faults are created at different locations and in order to maintain of supply to each and every load, tie switching or reconfiguration is incorporated on the basis of power loss minimization
Summary
Nowadays blackouts in power systems is a major concern for utilities, especially in distribution systems. Many approaches have been carried out considering impedance-based fault location methods in distribution networks. This paper focuses on the enhancement of SA by perceiving data of the fault and determining its exact (unique) or suspected locations by FPI placement using binary approach so to improve the impedance-based approach. For determining the suspected locations of fault by FPI placement, two cases are possible in distribution networks i.e., when only one branch is coming out from substation bus and other is more than one is coming out from substation bus. This approach is considered when only one fault has occurred in the network. It is important to note that when a fault occurs, all FPIs placed between substation & fault location is flagged 1
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