Analysis of Oscillations during Out-of-Step Condition in Power Systems
Power systems interconnected by weak tie lines can be subject to low-frequency oscillations because of disturbances which excites the low-frequency modes of the system; furthermore, these oscillations can be stable or unstable. The latter, if not treated, can cause severe oscillations that divide th...
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| Format: | Article |
| Language: | English |
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Wiley
2023-01-01
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| Series: | International Transactions on Electrical Energy Systems |
| Online Access: | http://dx.doi.org/10.1155/2023/4303491 |
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| author | Zainab Alnassar S. T. Nagarajan |
| author_facet | Zainab Alnassar S. T. Nagarajan |
| author_sort | Zainab Alnassar |
| collection | DOAJ |
| description | Power systems interconnected by weak tie lines can be subject to low-frequency oscillations because of disturbances which excites the low-frequency modes of the system; furthermore, these oscillations can be stable or unstable. The latter, if not treated, can cause severe oscillations that divide the network into smaller groups which oscillate against each other, leading to out-of-step (OOS) condition in the network. The detection of OOS condition is a challenge for power system operators in real time as it is difficult with conventional measuring instruments, to identify the instant at which the bus voltage angle between two areas connected by tie line falls out of synchronism. Conventionally, the detection of OOS condition has been carried out with impedance-based relays along with power swing blocking. With the advent of synchrophasor-based measurement units, it is now possible to measure the bus voltage angle in real time leading to direct detection of OOS condition in power system and intentional islanding. In this article, a systematic analytical study and EMT time-domain simulation study have been performed to simulate OOS condition in the power systems, and its detection is based on the voltage angle difference with wide-area measurement systems (WAMSs). The article has been carried out on a single machine infinite bus (SMIB) to monitor generator OOS, Kundur’s two-area system to detect interarea OOS, and the IEEE39 bus system to identify OOS condition and with a new algorithm. Time-domain simulation studies carried out with OPAL-RT real-time simulator in HYPERSIM environment corroborates with analytical results. |
| format | Article |
| id | doaj-art-c59a6fa82d834304944cec205e6a7e2a |
| institution | Kabale University |
| issn | 2050-7038 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Transactions on Electrical Energy Systems |
| spelling | doaj-art-c59a6fa82d834304944cec205e6a7e2a2025-02-03T01:30:25ZengWileyInternational Transactions on Electrical Energy Systems2050-70382023-01-01202310.1155/2023/4303491Analysis of Oscillations during Out-of-Step Condition in Power SystemsZainab Alnassar0S. T. Nagarajan1Department of Electrical EngineeringDepartment of Electrical EngineeringPower systems interconnected by weak tie lines can be subject to low-frequency oscillations because of disturbances which excites the low-frequency modes of the system; furthermore, these oscillations can be stable or unstable. The latter, if not treated, can cause severe oscillations that divide the network into smaller groups which oscillate against each other, leading to out-of-step (OOS) condition in the network. The detection of OOS condition is a challenge for power system operators in real time as it is difficult with conventional measuring instruments, to identify the instant at which the bus voltage angle between two areas connected by tie line falls out of synchronism. Conventionally, the detection of OOS condition has been carried out with impedance-based relays along with power swing blocking. With the advent of synchrophasor-based measurement units, it is now possible to measure the bus voltage angle in real time leading to direct detection of OOS condition in power system and intentional islanding. In this article, a systematic analytical study and EMT time-domain simulation study have been performed to simulate OOS condition in the power systems, and its detection is based on the voltage angle difference with wide-area measurement systems (WAMSs). The article has been carried out on a single machine infinite bus (SMIB) to monitor generator OOS, Kundur’s two-area system to detect interarea OOS, and the IEEE39 bus system to identify OOS condition and with a new algorithm. Time-domain simulation studies carried out with OPAL-RT real-time simulator in HYPERSIM environment corroborates with analytical results.http://dx.doi.org/10.1155/2023/4303491 |
| spellingShingle | Zainab Alnassar S. T. Nagarajan Analysis of Oscillations during Out-of-Step Condition in Power Systems International Transactions on Electrical Energy Systems |
| title | Analysis of Oscillations during Out-of-Step Condition in Power Systems |
| title_full | Analysis of Oscillations during Out-of-Step Condition in Power Systems |
| title_fullStr | Analysis of Oscillations during Out-of-Step Condition in Power Systems |
| title_full_unstemmed | Analysis of Oscillations during Out-of-Step Condition in Power Systems |
| title_short | Analysis of Oscillations during Out-of-Step Condition in Power Systems |
| title_sort | analysis of oscillations during out of step condition in power systems |
| url | http://dx.doi.org/10.1155/2023/4303491 |
| work_keys_str_mv | AT zainabalnassar analysisofoscillationsduringoutofstepconditioninpowersystems AT stnagarajan analysisofoscillationsduringoutofstepconditioninpowersystems |