Can EnergyPlus or TRNSYS simulate electric ovens?

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Please note that EnergyPlus, TRNSYS, or other whole-building simulation programs model ovens or any other type of appliance or non-HVAC equipment as a heat source and as energy consumption. Furthermore, it's up to the user to define the usage schedule, energy intensity, and the fraction of the energy consumed that appears as heat gain to the space. Thus, these programs are not so much as "simulating" these equipment, but acting as "bean counters" keeping track of the energy and heat input information provided by the user. The only simulation that occurs is how that heat input influences conditions within the space, and the amount of heating or cooling that has to be provided by the HVAC equipment.

An electric oven is no different from any other piece of interior electric equipment. The Building America House Simulation Protocols explains some of the assumptions used for modeling cooking equipment for residential buildings.

Pretty much any whole-building modeling program will be able to handle this the same way. You can enter the power consumption of the oven.

You'll need to use some calculation outside of the program as to how many kW are used through out the day based on what is being cooked, and what the hours of operation will be. You'll also need to note how much heat from the oven is convected/radiated to the space and how much might be exhausted through a hood so that it isn't part of the cooling load.