TY - JOUR AU - Su Sheng AU - W. L. Chan AU - K. K. Li AU - Duan Xianzhong AU - Zeng Xiangjun AB - This paper proposes identifying a vicious fault by using context information, such as voltage and current, of the same substation. When the protection system detects a fault based on measurements transmitted through a network, it collects all measurements of the substation and feeds these data to a probabilistic neural network. Thereafter, the fault caused by fake data that differs from the known fault pattern can be identified and blocked. BT - Institute of Electrical and Electronics Engineers (IEEE) DA - 2007-07 DO - 10.1109/TPWRD.2006.886775 N1 - In order to provide a complementary mechanism against other measures, context information-based cyber security protection is proposed in this paper. When the protection system detects a fault based on the measurements of a single or couple instrument transformers, the measurements of the whole substation will be collected to carry out pattern classification to validate the fault. A PNN used as pattern classifier has been constructed. The test of real and fake fault exemplars generated with specific rules show that the proposed PNN can identify the fake fault from the real fault with selected smoothing parameters. N2 - This paper proposes identifying a vicious fault by using context information, such as voltage and current, of the same substation. When the protection system detects a fault based on measurements transmitted through a network, it collects all measurements of the substation and feeds these data to a probabilistic neural network. Thereafter, the fault caused by fake data that differs from the known fault pattern can be identified and blocked. PY - 2007 T2 - Institute of Electrical and Electronics Engineers (IEEE) TI - Context Information-Based Cyber Security Defense of Protection System UR - https://ieeexplore.ieee.org/abstract/document/4265724 SN - 0885-8977 ER -