The Use of Probabilistic Approach in Power System Security Analyses

Przygrodzki, M.; Kubek, Paweł; Gwozdz, Rafal

doi:10.1109/epe51172.2020.9269201

Cited by 2 publications

(4 citation statements)

References 4 publications

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“…Sometimes, though the contingency is more probable, it may not have risk at all. The application of probabilistic SA in operational time frame remains limited by the heavy computational burden [ 56 , 69 ].…”

Section: Methods Of Power System Security Assessmentmentioning

confidence: 99%

“…1 [ 54 , 55 ]. Normal state: all system equality, E, (e.g., power balance in equation (1) and inequality, I, constraints (e.g., bus voltages and line flows) are within the operating limits and the system is N -k secure [ 56 ]. Alert state: system equality and inequality constraints are near their limits, but not N -k secure (

).…”

Section: Static Security Limits and Operating Statesmentioning

confidence: 99%

“…Normal state: all system equality, E, (e.g., power balance in equation (1) and inequality, I, constraints (e.g., bus voltages and line flows) are within the operating limits and the system is N -k secure [ 56 ].…”

Section: Static Security Limits and Operating Statesmentioning

confidence: 99%

“…[ 19 ], the combination of generation scheduling and load shedding are considered to maintain system security. Both generation rescheduling and load shedding practices are direct but costly options [ 56 ] and difficult to implement in deregulated market environments and multi-area power systems since different regions of the power system are owned and controlled by different companies or operators [ 111 , 120 ].…”

Section: Security Improvement Techniquesmentioning

confidence: 99%

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confidence: 99%

).…”

Section: Static Security Limits and Operating Statesmentioning

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Power systems can be analyzed using either a deterministic or a probabilistic approach. The deterministic analysis centers on studying the quantities and indicators that characterize the operating states of the power system under strictly defined conditions. However, the long-term horizon of planning analyses, the changes of marketing mechanisms, the development of renewable electricity sources, the leaving from large-scale generation, the growth of smart technology and the increase in consumer awareness make the development of transmission networks a non-deterministic problem. In this article, we propose a planning procedure that takes the probabilistic elements into account. This procedure was developed to take into account the high variability of power flows caused by the generation of renewable sources and international exchange. Such conditions of the power system operation forced a departure from deterministic planning. The new probabilistic approach uses the existing tools and experience gained during subsequent development projects. As part of the probabilistic approach, simulations were carried out using the Latin Hypercube Sampling and Two Point Estimation Method algorithms. These methods effectively reduce the computation time and, at the same time, give satisfactory results. The verification was carried out on a test grid model developed in accordance with the technical standards used in the Polish Power System. Effects were assessed using a deterministic and probabilistic approach. This analysis confirmed the practical possibility of using the probabilistic approach in planning the development of transmission network in Poland. When using a probabilistic approach to predict power flow, the criteria of technical acceptability for a given development variant and the manner in which the strategy is determined are of particular importance.

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The Use of Probabilistic Approach in Power System Security Analyses

Cited by 2 publications

References 4 publications

Techniques of power system static security assessment and improvement: A literature survey

Techniques of power system static security assessment and improvement: A literature survey

The Polish Practice of Probabilistic Approach in Power System Development Planning

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