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A Compound Relay Protection Operation Criterion Based on Kirchhoff’s Current Law and Abnormal Data Detecting Algorithm
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
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
- 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 Shaanxi Key Laboratory of Smart Grid (Xi’an Jiaotong University), Xi’an Jiaotong University, Xi’an, China
- 4 Shaanxi Key Laboratory of Smart Grid (Xi’an Jiaotong University), Xi’an Jiaotong University, Xi’an, China
- 5 Tianjin Power Transmission and Transformation Engineering Company, Tianjin, China
Energy and Power Engineering·Volume 09 (2017)·Pages 88–94·Published 6 April 2017·DOI10.4236/epe.2017.94B011
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Abstract
A compound relay protection operation criterion is proposed based on Kirchhoff’s Current Law and abnormal data detecting algorithm. The abnormal data detecting algorithm are proposed after deep research on the abnormal data properties. The current transformer status monitoring system and current phase angle detecting system is introduced. A simulation model containing different power sources and loads is established in Matlab. The simulation results show that this compound criterion can work quickly and reliably in all conditions.
KeywordsRelay ProtectionAbnormal DataSmart Substation
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