Protection Strategies against Cascading Failure for Power Systems of Ring Network
| Autor: | Peter Han Joo Chong, Arun Kumar, Hnin Yu Shwe |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
021110 strategic
defence & security studies business.industry Computer science 05 social sciences 0211 other engineering and technologies Ring network 02 engineering and technology General Medicine Complex network Cascading failure Power (physics) Electric power system Electric power transmission Robustness (computer science) 0501 psychology and cognitive sciences Power-system protection business 050107 human factors Computer network |
| Zdroj: | Communications and Network. :67-78 |
| ISSN: | 1947-3826 1949-2421 |
| DOI: | 10.4236/cn.2016.82008 |
| Popis: | Power grid vulnerability is a key issue with large blackouts, causing power disruption for millions of people. The complexity of power grid, together with excessive number of components, makes it difficult to be modeled. Currently, researchers use complex networks to model and study the performance of power grids. In fact, power grids can be modeled into a complex network by making use of ring network topology, with substations and transmission lines denoted as nodes and edges, respectively. In this paper, three protection schemes are proposed and their effectiveness in protecting the power network under high and low-load attacks is studied. The proposed schemes, namely, Cascaded Load Cut-off (CLC), Cascaded Load Overflow (CLO) and Adaptive-Cascaded Load Overflow (A-CLO), improve the robustness of the power grids, i.e., decrease the value of critical tolerance. Simulation results show that CLC and CLO protection schemes are more effective in improving the robustness of networks than the A-CLO protection scheme. However, the CLC protection scheme is effective only at the expense that certain percentage of the network will have no power supply. Thus, results show that the CLO protection scheme dominates the other protection schemes, CLC and A-CLO, in terms of the robustness of the network, improved with the precise amount of load cut-off determined. |
| Databáze: | OpenAIRE |
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