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A new pole slipping protection algorithm for dispersed storage and generation using the equal area criterion

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2 Author(s)
Redfern, M.A. ; Sch. of Electron. & Electr. Eng., Bath Univ., UK ; Checkfield, M.J.

The probability of pole slipping of dispersed storage and generation (DSG) synchronous machines is being viewed with concern, since this can damage the machine as well as promote power system instability. This is particularly the case for small and medium sized machines because their low inertia and high resistance make them inherently more unstable. Research has therefore been directed into new techniques for detecting pole slipping and the formulation of protection algorithms which can be included into an integrated microcomputer based protection scheme for these generators. This paper describes a method for detecting pole slipping using power measurements taken at the generator's terminals. This technique has been shown to correctly detect pole slipping using both computer simulation and a laboratory model power system. The algorithm remains stable for recoverable swing conditions and power system faults

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Power Delivery, IEEE Transactions on  (Volume:10 ,  Issue: 1 )