Contingency Analysis: A Tool to Improve Power System Security

Patel, Ravindu; Nimje, Akhilesh A.; Godwal, Shanker D.; Kanojia, Sarika

doi:10.1007/978-981-19-2764-5_7

Cited by 5 publications

(2 citation statements)

References 38 publications

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“…Contingency analysis is a mathematical method to predict the failure of equipment or a specific line and take corrective action before the system enters an unstable state [13]. Contingency analysis can analyze the safety aspects of the power system during both planning and operation phases.…”

Section: Contingenciesmentioning

confidence: 99%

A Methodology for Rating Electricity Transmission Lines to Assess the Most Important or Critical Lines

Trukšinas,

Radziukynas,

Kairaitis

2024

Applied Sciences

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The proposed method, based on three combined criteria—Sn—design capacity of the power line, LF, (line flow)—power flow in an electric transmission line, MVA, and the ratio of LF/Sn—allows for ranking electric transmission lines when calculations are performed in normal/pre-emergency modes. A combined set of criteria used to study critical/post-emergency N-k modes is developed. The simulations were performed on the real Baltic 330 kV electricity transmission system. The results reveal that when the power system operates in different load modes, most of the critical power lines determined by our method fall into the actual set of important/“critical” power transmission lines. This allows us to significantly reduce the number of simulated combinations and shorten the calculation time required for it. During the study of the Baltic electricity system, it was found that the developed method was accurate and efficient and suitable for the assessment of the reliability of real electricity transmission networks when planning operational and perspective work modes. The simulations results revealed the high reliability of the Baltic electricity system. The 330 kV electricity transmission network of the Baltic countries fully meets the N-2 criterion (usually, electricity transmission networks are designed to meet the N-1 criterion).

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Section: Contingenciesmentioning

confidence: 99%

A Methodology for Rating Electricity Transmission Lines to Assess the Most Important or Critical Lines

Trukšinas,

Radziukynas,

Kairaitis

2024

Applied Sciences

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“…The drive toward maintaining a reliable power system has become a matter of utmost significance in the world today, because, electricity plays a crucial role in our daily and economic activities (Badrudeen et al, 2023). The inadequate power supply to meet the daily power demand and the complexity of the power network has led to the occurrence of contingencies such as abrupt load changes, transmission line failure, and malfunctioning power equipment which could pose a notable risk to the grid stability (Patel et al, 2022). Contingency analysis is an essential tool for ensuring the reliability and security of power networks in the presence of load perturbation (Badrudeen et al, 2022b).…”

Section: Introductionmentioning

confidence: 99%

Voltage stability improvement and power losses reduction through multiple grid contingency supports

Badrudeen,

Ariyo,

Nwulu

2024

Energy Exploration & Exploitation

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A stable power system is a desirable state for the optimal performance and delivery of electricity to the end-users. This study evaluates the effectiveness of grid contingency support devices in power system stability enhancement. The new voltage stability pointer (NVSP) was employed to optimally infer the flexible alternating current transmission systems devices through N − 1 contingency ranking. In this research, the static synchronous compensator (STATCOM) was considered as a grid support device. The effectiveness of this technique was validated in R2018a MATLAB with the IEEE 30-bus system using different combinable contingency cases to ascertain the critical lines and vulnerable buses to outages. Based on the results obtained through the NVSP, buses 30, 26, and 29 were cited as STATCOM candidate buses for overall optimal grid performance. The results obtained from the simulation revealed that the total real power loss was reduced by 90.21%. Similarly, the voltage magnitude of the buses was significantly improved to a minimum of 1.00 p.u. after placement of STATCOMs. Further investigation on single STATCOM placement in the IEEE 30-bus system revealed that the highest level of voltage improvement, minimum level of voltage deviation and maximum active power loss reduction was achieved when the STATCOM was placed at bus 30. The overall assessment of the proposed technique yielded better results compared with other methods on the same test system.

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Voltage stability assessment and contingency ranking in power systems based on modern stability assessment index

Mokred,

Wang

2024

Results in Engineering

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Contingency Analysis: A Tool to Improve Power System Security

Cited by 5 publications

References 38 publications

A Methodology for Rating Electricity Transmission Lines to Assess the Most Important or Critical Lines

A Methodology for Rating Electricity Transmission Lines to Assess the Most Important or Critical Lines

Voltage stability improvement and power losses reduction through multiple grid contingency supports

Voltage stability assessment and contingency ranking in power systems based on modern stability assessment index

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