An adaptive supervised wide-area backup protection scheme for transmission lines protection

Abstract Maloperation of conventional relays is becoming prevalent due to ever increase in complexity of conventional power grids. They are dominant during power system contingencies like power swing, load encroachment, voltage instability, unbalanced loading, etc. In these situations, adaptive supe...

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Main Authors: B. Mallikarjuna, P. V. Vardhan Varma, S. D. Samir, M. Jaya Bharata Reddy, D. K. Mohanta
Format: Article
Language:English
Published: SpringerOpen 2017-06-01
Series:Protection and Control of Modern Power Systems
Subjects:
Online Access:http://link.springer.com/article/10.1186/s41601-017-0053-1
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author B. Mallikarjuna
P. V. Vardhan Varma
S. D. Samir
M. Jaya Bharata Reddy
D. K. Mohanta
author_facet B. Mallikarjuna
P. V. Vardhan Varma
S. D. Samir
M. Jaya Bharata Reddy
D. K. Mohanta
author_sort B. Mallikarjuna
collection DOAJ
description Abstract Maloperation of conventional relays is becoming prevalent due to ever increase in complexity of conventional power grids. They are dominant during power system contingencies like power swing, load encroachment, voltage instability, unbalanced loading, etc. In these situations, adaptive supervised wide-area backup protection (ASWABP) plays a major role in enhancing the power system reliability. A balance between security and dependability of protection is essential to maintain the reliability. This paper proposes multi-phasor measurement units (MPMU) based ASWABP scheme that can function effectively during faults besides power system contingencies. MPMU is an extended version of Phasor Measurement Unit (PMU). It is an intelligent electronic device which estimates the synchronized predominant harmonic phasors (100Hz and 150Hz) along with the fundamental phasors (50Hz) of three phase voltages and currents with high precision. The proposed ASWABP scheme can detect the fault, identify the parent bus, determine the faulty branch and classify the faults using MPMU measurements at System Protection Center (SPC). Based on these MPMU measurements (received at phasor data concentrator (PDC) at SPC) the appropriate relays will be supervised to enhance the overall reliability of the power grid. Numerous case studies are conducted on WSCC-9 bus and IEEE-14 bus systems to illustrate the security and dependability attributes of proposed ASWABP scheme in MATLAB/Simulink environment. Also, comparative studies are performed with the existing conventional distance protection (Mho relays) for corroborating the superiority of the proposed scheme regarding security and dependability. Comparative studies have shown that the proposed scheme can be used as adaptive supervised wide-area backup protection of conventional distance protection.
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spelling doaj.art-9ee0c609093f434698b59dda062cbb022022-12-21T19:19:47ZengSpringerOpenProtection and Control of Modern Power Systems2367-26172367-09832017-06-012111610.1186/s41601-017-0053-1An adaptive supervised wide-area backup protection scheme for transmission lines protectionB. Mallikarjuna0P. V. Vardhan Varma1S. D. Samir2M. Jaya Bharata Reddy3D. K. Mohanta4Department of Electrical and Electronics Engineering, National Institute of TechnologyDepartment of Electrical and Electronics Engineering, National Institute of TechnologyDepartment of Electrical and Electronics Engineering, National Institute of TechnologyDepartment of Electrical and Electronics Engineering, National Institute of TechnologyDepartment of Electrical and Electronics Engineering, Birla Institute of Technology, MesraAbstract Maloperation of conventional relays is becoming prevalent due to ever increase in complexity of conventional power grids. They are dominant during power system contingencies like power swing, load encroachment, voltage instability, unbalanced loading, etc. In these situations, adaptive supervised wide-area backup protection (ASWABP) plays a major role in enhancing the power system reliability. A balance between security and dependability of protection is essential to maintain the reliability. This paper proposes multi-phasor measurement units (MPMU) based ASWABP scheme that can function effectively during faults besides power system contingencies. MPMU is an extended version of Phasor Measurement Unit (PMU). It is an intelligent electronic device which estimates the synchronized predominant harmonic phasors (100Hz and 150Hz) along with the fundamental phasors (50Hz) of three phase voltages and currents with high precision. The proposed ASWABP scheme can detect the fault, identify the parent bus, determine the faulty branch and classify the faults using MPMU measurements at System Protection Center (SPC). Based on these MPMU measurements (received at phasor data concentrator (PDC) at SPC) the appropriate relays will be supervised to enhance the overall reliability of the power grid. Numerous case studies are conducted on WSCC-9 bus and IEEE-14 bus systems to illustrate the security and dependability attributes of proposed ASWABP scheme in MATLAB/Simulink environment. Also, comparative studies are performed with the existing conventional distance protection (Mho relays) for corroborating the superiority of the proposed scheme regarding security and dependability. Comparative studies have shown that the proposed scheme can be used as adaptive supervised wide-area backup protection of conventional distance protection.http://link.springer.com/article/10.1186/s41601-017-0053-1Adaptive supervised wide-area backup protection (ASWABP)Multi-phasor measurement unit (MPMU)SecurityDependability
spellingShingle B. Mallikarjuna
P. V. Vardhan Varma
S. D. Samir
M. Jaya Bharata Reddy
D. K. Mohanta
An adaptive supervised wide-area backup protection scheme for transmission lines protection
Protection and Control of Modern Power Systems
Adaptive supervised wide-area backup protection (ASWABP)
Multi-phasor measurement unit (MPMU)
Security
Dependability
title An adaptive supervised wide-area backup protection scheme for transmission lines protection
title_full An adaptive supervised wide-area backup protection scheme for transmission lines protection
title_fullStr An adaptive supervised wide-area backup protection scheme for transmission lines protection
title_full_unstemmed An adaptive supervised wide-area backup protection scheme for transmission lines protection
title_short An adaptive supervised wide-area backup protection scheme for transmission lines protection
title_sort adaptive supervised wide area backup protection scheme for transmission lines protection
topic Adaptive supervised wide-area backup protection (ASWABP)
Multi-phasor measurement unit (MPMU)
Security
Dependability
url http://link.springer.com/article/10.1186/s41601-017-0053-1
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