The adaptive and robust power system protection schemes in the presence of DGs

Navid Bayati*, Fateme Aghaee, S. H.H. Sadeghi

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Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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Resumé

In recent years, using distributed generations (DGs) has increased in order to compensate the load and consumption growth. Although connecting DG resources to power system has many advantages, it might cause some protective problems such as mis-coordination between network protection devices, due to the changing in the short circuit level of power system. In this paper, two method for restoring the coordination of relays in the presence of DGs by using FCLs are proposed. In both methods, different criteria, such as considering the variation of network topology, optimizing the value and number of FCLs are considered to propose a comprehensive and adaptive protection method. In the first method, an adaptive protection scheme by using FCLs is proposed to active and deactivate FCLs in different topologies to restore the coordination of relays. In addition, the second method proposes a robust method which considers all possible situations and topologies of the power system to maintain the coordination of power system during fault. Finally, the proposed robust and adaptive protection scheme has been compared in terms of cost, the operation time of relays and computation time, and based on the aims of operators in a power system one of these method can be implemented, The proposed methods are implemented on IEEE 14-bus standard network, and all possible topologies of the mentioned network are considered. Simulation results show that the proposed method can maintain the coordination of overcurrent relay protection in the presence of DGs and topology changes. In other words, the proposed method is robust against topologies changes.
OriginalsprogEngelsk
TidsskriftInternational Journal of Renewable Energy Research
Vol/bind9
Udgave nummer2
Sider (fra-til)732-740
Antal sider9
ISSN1309-0127
StatusUdgivet - jun. 2019

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Distributed power generation
Topology
Relay protection
Short circuit currents
Costs

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title = "The adaptive and robust power system protection schemes in the presence of DGs",
abstract = "In recent years, using distributed generations (DGs) has increased in order to compensate the load and consumption growth. Although connecting DG resources to power system has many advantages, it might cause some protective problems such as mis-coordination between network protection devices, due to the changing in the short circuit level of power system. In this paper, two method for restoring the coordination of relays in the presence of DGs by using FCLs are proposed. In both methods, different criteria, such as considering the variation of network topology, optimizing the value and number of FCLs are considered to propose a comprehensive and adaptive protection method. In the first method, an adaptive protection scheme by using FCLs is proposed to active and deactivate FCLs in different topologies to restore the coordination of relays. In addition, the second method proposes a robust method which considers all possible situations and topologies of the power system to maintain the coordination of power system during fault. Finally, the proposed robust and adaptive protection scheme has been compared in terms of cost, the operation time of relays and computation time, and based on the aims of operators in a power system one of these method can be implemented, The proposed methods are implemented on IEEE 14-bus standard network, and all possible topologies of the mentioned network are considered. Simulation results show that the proposed method can maintain the coordination of overcurrent relay protection in the presence of DGs and topology changes. In other words, the proposed method is robust against topologies changes.",
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The adaptive and robust power system protection schemes in the presence of DGs. / Bayati, Navid; Aghaee, Fateme; Sadeghi, S. H.H.

I: International Journal of Renewable Energy Research, Bind 9, Nr. 2, 06.2019, s. 732-740.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - The adaptive and robust power system protection schemes in the presence of DGs

AU - Bayati, Navid

AU - Aghaee, Fateme

AU - Sadeghi, S. H.H.

PY - 2019/6

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N2 - In recent years, using distributed generations (DGs) has increased in order to compensate the load and consumption growth. Although connecting DG resources to power system has many advantages, it might cause some protective problems such as mis-coordination between network protection devices, due to the changing in the short circuit level of power system. In this paper, two method for restoring the coordination of relays in the presence of DGs by using FCLs are proposed. In both methods, different criteria, such as considering the variation of network topology, optimizing the value and number of FCLs are considered to propose a comprehensive and adaptive protection method. In the first method, an adaptive protection scheme by using FCLs is proposed to active and deactivate FCLs in different topologies to restore the coordination of relays. In addition, the second method proposes a robust method which considers all possible situations and topologies of the power system to maintain the coordination of power system during fault. Finally, the proposed robust and adaptive protection scheme has been compared in terms of cost, the operation time of relays and computation time, and based on the aims of operators in a power system one of these method can be implemented, The proposed methods are implemented on IEEE 14-bus standard network, and all possible topologies of the mentioned network are considered. Simulation results show that the proposed method can maintain the coordination of overcurrent relay protection in the presence of DGs and topology changes. In other words, the proposed method is robust against topologies changes.

AB - In recent years, using distributed generations (DGs) has increased in order to compensate the load and consumption growth. Although connecting DG resources to power system has many advantages, it might cause some protective problems such as mis-coordination between network protection devices, due to the changing in the short circuit level of power system. In this paper, two method for restoring the coordination of relays in the presence of DGs by using FCLs are proposed. In both methods, different criteria, such as considering the variation of network topology, optimizing the value and number of FCLs are considered to propose a comprehensive and adaptive protection method. In the first method, an adaptive protection scheme by using FCLs is proposed to active and deactivate FCLs in different topologies to restore the coordination of relays. In addition, the second method proposes a robust method which considers all possible situations and topologies of the power system to maintain the coordination of power system during fault. Finally, the proposed robust and adaptive protection scheme has been compared in terms of cost, the operation time of relays and computation time, and based on the aims of operators in a power system one of these method can be implemented, The proposed methods are implemented on IEEE 14-bus standard network, and all possible topologies of the mentioned network are considered. Simulation results show that the proposed method can maintain the coordination of overcurrent relay protection in the presence of DGs and topology changes. In other words, the proposed method is robust against topologies changes.

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KW - Power system

KW - Protection

KW - Relay

KW - Robust

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