You have a short circuit in the top oven whiring.
It may be a problem with an element, a faulty thermostat or a frayed whire somewhere.
IF you have the right tools and material, you may attempt the repair. It involve carefully inspecting all the whiring of the top oven and replacing any damageds whire or maybe some heavy use of electric tape.
If there are no damaged whire, check the thermostat. Disconnect the whire going OUT from the thermostat to the elements and turn on. If the breaker trips, change the thermostat.
Otherwise, your heating element is deffective and need replacing.
In your place I'd call a repairman. He would probably do the job faster and beter.
Electro, August 2013