Protection and Control-Power Distribution

The first thing you should do is clearly provide more information. Seriously. You talk about a substation and also about a wind turbine. Are you trying to build a system (including protection) to connect a 33kV wind turbine to the 11kV power grid? What size turbine? Is there just one?

The next thing you should do is to look at the electrical standards and local electrical regulations governing this sort of thing (which your system MUST conform to). These vary from country to country (and in some cases from state to state) What country are you in?

If this is a job do you at least have a customer specification, tender design, etc to assist in what is required (protection levels, earth fault protection, NER's, transformer types, overload capability, preferred manufacturers, protection schemes, SCADA control, CT ratios and accuracy, budget, civil works, etc, etc, etc) or are you trying to make it up as you go.

If you are unsure or new to this sort of thing (which seems very clear to me) you should get the advise of a professional electrical consultancy (or similar) to help with the design (or do the design for you). We on CR4 can give you a few pointers and ideas but we CANNOT provide you with all the necessary information to design and build such a complex system from scratch. This is a discussion group after all, not a free consultancy service.

Please provide more information.

If you find it neccessary to ask this question on a random, open, engineering forum then I suggest you go back to answering tech support calls for Mattel.

Your substation design is likely to register as a 0.58MT explosion.