NDLI: Prevention of maloperation of distance relay under severe stressed conditions for series compensated transmission line considering optimal placement of phasor measurement units

Content Provider	IET Digital Library
Author	Rao, Juttu Tejeswara Bhalja, Bhavesh R.
Abstract	This study presents a new protection scheme for a series compensated transmission line, which prevents maloperation of distance relay during severe stressed conditions. The proposed method depends on the calculation of the net angular difference of positive sequence phasors of voltage and current signals acquired from phasor measurement units (PMUs). For fully observable power system network, the minimum number of PMUs required with a maximum number of system observability redundancy index has been identified by the suggested method using binary chemical reaction optimisation technique. The validity of the suggested technique has been confirmed by generating different severe stressed conditions along with faulty situations by modelling IEEE-39 bus system using RTDS/RSCAD software. The proposed technique offers effective discrimination between severe stressed conditions (symmetrical/asymmetrical power swing, load encroachment, voltage instability) and faulty situation even against wide variation in fault type, fault resistance, fault inception angle, degree of compensation and location of the series capacitor (middle or both ends). The accomplished results disclose higher discriminating capability between severe stressed conditions and faulty situation of the proposed technique in comparison with those of the several existing techniques.
Starting Page	2148
Ending Page	2159
Page Count	12
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 11, Jun (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2019.1234
Journal	IET Generation, Transmission & Distribution
Publisher Date	2020-02-26
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Binary Chemical Reaction Optimisation Technique Different Severe Stressed Condition Fault Diagnosis Fault Location Fully Observable Power System Network Optimisation Optimisation Technique Phasor Measurement Phasor Measurement Unit Positive Sequence Phasors Power Engineering Computing Power System Control Power System Fault Power System Measurement Power System Measurement And Metering Power System Protection Power System Simulation Power Transmission Fault Power Transmission Line Power Transmission Protection Relay Protection Series Compensated Transmission Line System Observability Redundancy Index
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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