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Detection of topology errors by state estimation [power systems]

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2 Author(s)
Wu, F.F. ; Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA ; Liu, W.-H.E.

Errors in the telemetered data of breaker and switch status, through the network topology processor in the EMS (energy management system) computer, may result in errors in the determination of the current network topology of the system. The use of normalized residuals that result from state estimation is proposed for the detection of topology errors. Three types of topology errors are considered: line or transformer outage, bus split, and shunt capacitor/reactor switching. Conditions for detectability of topology errors are presented. The conditions are tested on the IEEE 30 bus system, and the results confirm the theoretical predictions. The problem of topology error identification is also discussed

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Power Systems, IEEE Transactions on  (Volume:4 ,  Issue: 1 )