Research on Pre-view Method of Safety Level of Cascading Trip for Power Grid
| Autor: | Qin-Bin Li, Pei-Qiang Li, Rong-Jin Zheng, Hui-Qiong Deng, Kuo-Chi Chang |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Advances in Intelligent Systems and Computing ISBN: 9783030697167 AMLTA |
| DOI: | 10.1007/978-3-030-69717-4_79 |
| Popis: | This article introduces a method by which the power grid's security level can be observed in advance based on the expected initial failure. Firstly, based on the general form of cascading trip, this paper gives a mathematical expression of grid tripping based on cascading trip relay protection action behavior. According to the mathematical expression, the relationship between grid tripping and grid node injection power is discussed. According to this relationship, the distance between the node injection power under the current operation state and the nearest critical state node injection power is taken as the index to measure the power grid's security for cascading trip. According to this index, combined with various power grid constraints before and after the initial fault, a mathematical model for obtaining this safety index is given. This model is an optimized mathematical model. For the model, this paper gives a solution idea based on particle swarm. Finally, a few cases are performed in the IEEE-14 node system, and the calculations of the cases proved the accuracy of the proposed model and method. |
| Databáze: | OpenAIRE |
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