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The Influence of Abnormal Data on Relay Protection
Shaanxi Key Laboratory of Smart Grid (Xi’an Jiaotong University), Xi’an Jiaotong University, Xi’an, China
Shaanxi Key Laboratory of Smart Grid (Xi’an Jiaotong University), Xi’an Jiaotong University, Xi’an, China
Tianjin Power Transmission and Transformation Engineering Company, Tianjin, China
Shaanxi Key Laboratory of Smart Grid (Xi’an Jiaotong University), Xi’an Jiaotong University, Xi’an, China
Shaanxi Key Laboratory of Smart Grid (Xi’an Jiaotong University), Xi’an Jiaotong University, Xi’an, China
- 1 Shaanxi Key Laboratory of Smart Grid (Xi’an Jiaotong University), Xi’an Jiaotong University, Xi’an, China
- 2 Shaanxi Key Laboratory of Smart Grid (Xi’an Jiaotong University), Xi’an Jiaotong University, Xi’an, China
- 3 Tianjin Power Transmission and Transformation Engineering Company, Tianjin, China
- 4 Shaanxi Key Laboratory of Smart Grid (Xi’an Jiaotong University), Xi’an Jiaotong University, Xi’an, China
- 5 Shaanxi Key Laboratory of Smart Grid (Xi’an Jiaotong University), Xi’an Jiaotong University, Xi’an, China
Energy and Power Engineering·Volume 09 (2017)·Pages 95–101·Published 6 April 2017·DOI10.4236/epe.2017.94B012
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Abstract
The parameters of abnormal data are defined and their influence on the original data and Fourier Algorithm is studied. A formula is proposed to quantify how the abnormal data influences the amplitude calculated by Fourier Algorithm. Two simulation models are established in Matlab to study the influence of abnormal data on relay protection. The simulation results show that the abnormal data can make distance protection extend the fault’s influence and make over current protection start by error.
KeywordsRelay ProtectionAbnormal DataFourier Algorithm
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