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To study the effects of wind generators on distribution system protection, the short-circuit current （SCC） characteristics of wind generators is important. Although there are many researches on the issue, a clear agreement has not been reached so far. The SCC characteristics for different wind generators are studied. PSCAD simulation is performed in the same system integrated with different kinds of wind generators, and their results are compared with those reported in IEEE papers. The detection possibility by overcurrent relay （OCR） is discussed based on the simulation results.