Breaker Contact Behavior with Rapid Sequential Switching Above Fault Rating

Barkan, P.; Beehler, J. E.; Reckleff, J.G.

doi:10.1109/tpas.1983.317747

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…Nevertheless, it is the most commonly used method for reducing the short-circuit current, because it is fast and inexpensive. Additionally, there is a method of dividing the system using the "splitting" function, which cuts the system with a ring-bus configuration in an optimal manner [6][7][8]. This method, which considers the number of breakers needed to divide the system, is the most economical method for isolating the short-circuit current.…”

Section: Introductionmentioning

confidence: 99%

Development of Bus and Line Control Method for Short-Circuit Current Reduction Using Genetic Programming

Son

Han

2022

Energies

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In this study, genetic programming (GP) is used for optimizing bus and line separation methods to reduce the short-circuit current. Expanding power systems led to intensive electric power and more transmission lines, reducing the grid impedance. This increases the short-circuit currents that occur during failure, and it is impossible to continue developing higher-capacity breakers to accommodate such short-circuit currents. Therefore, the short-circuit currents must be managed systematically through busbar separation and line separation. However, there are countless possible bus and line separation schemes for power systems. Furthermore, to comply with power-system reliability standards, no lines or transformers should be overloaded after such controls are applied. This paper proposes the use of GP to optimize the bus and line separation methods for obtaining a solution. The solutions are limited to methods that can be implemented in real power systems, reducing the convergence probability and optimization time. The proposed technique is useful for designing power systems with consideration of the short-circuit current.

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Section: Introductionmentioning

confidence: 99%

Development of Bus and Line Control Method for Short-Circuit Current Reduction Using Genetic Programming

Son

Han

2022

Energies

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“…Nevertheless, these are the most widely used methods to reduce short circuit current, as they require effectively no additional time or expense. Related research has been conducted on methods of separating the grid using the "splitting" function, which cuts a grid connected in ring-bus form into its optimal form [6][7][8]. Developed a very long time ago, it is the most economical approach for separating short circuit current and takes into account the number of breakers required to divide the grid.…”

Section: Introductionmentioning

confidence: 99%

Control Method of Buses and Lines Using Reinforcement Learning for Short Circuit Current Reduction

Han¹

2020

Sustainability

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This paper proposes a reinforcement learning-based approach that optimises bus and line control methods to solve the problem of short circuit currents in power systems. Expansion of power grids leads to concentrated power output and more lines for large-scale transmission, thereby increasing short circuit currents. The short circuit currents must be managed systematically by controlling the buses and lines such as separating, merging, and moving a bus, line, or transformer. However, there are countless possible control schemes in an actual grid. Moreover, to ensure compliance with power system reliability standards, no bus should exceed breaker capacity nor should lines or transformers be overloaded. For this reason, examining and selecting a plan requires extensive time and effort. To solve these problems, this paper introduces reinforcement learning to optimise control methods. By providing appropriate rewards for each control action, a policy is set, and the optimal control method is obtained through a maximising value method. In addition, a technique is presented that systematically defines the bus and line separation measures, limits the range of measures to those with actual power grid applicability, and reduces the optimisation time while increasing the convergence probability and enabling use in actual power grid operation. In the future, this technique will contribute significantly to establishing power grid operation plans based on short circuit currents.

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Short-Circuit Current Partitioning in HV Substations in Ring-Bus Arrangement with Redundancy

Koeppi

Blahous

Hager

1984

IEEE Trans. on Power Apparatus and Syst.

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Breaker Contact Behavior with Rapid Sequential Switching Above Fault Rating

Cited by 4 publications

References 6 publications

Development of Bus and Line Control Method for Short-Circuit Current Reduction Using Genetic Programming

Development of Bus and Line Control Method for Short-Circuit Current Reduction Using Genetic Programming

Control Method of Buses and Lines Using Reinforcement Learning for Short Circuit Current Reduction

Short-Circuit Current Partitioning in HV Substations in Ring-Bus Arrangement with Redundancy

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