Single Line Diagram Equipments

That's a large task. And one outside of my areas of expertise. There may be more knowledgeable members on this forum that might be able to point you to the resources where you can better find your answers.

Hiring a consultant with the credentials approved by your AHJ (authority having jurisdiction) is probably the best approach to getting the proper answers for your project.

Best wishes on your quest.

Thank you @Brave, i do appreciate your response. I still look up to more responses from other members who have core knowledge area on this.

You need to contact a major distributer of grid style electrical distribution equipment, and sign an MOU(memorandum of understanding) where you agree to buy all your equipment from them for this project, and have them agree to supply and site all the components of the substation and commissioning done within a certain timeframe...You submit to them your AHJ (authority having jurisdiction) approved plans and have them approve or modify these plans...then they should price out the entire project for you...

https://www.global.toshiba/ww/products-solutions/transmission/products-technical-services/substation-equipment.html

...or Siemens, or Schneider, or any large company that specializes in this type work....I would check to see what other distributors have done locally...

https://nairametrics.com/2022/12/04/electricity-distribution-companies-in-nigeria-and-the-states-they-cover/

https://www.lusha.com/company-search/utilities/56/nigeria/80/

https://projectsportal.afdb.org/dataportal/VProject/show/P-NG-FA0-011

Thank you for your contributions..

You show perhaps 3 sets of battery limits, one around the switchgear, one around the generator and one around the transformer.

You also show 5 transformers, so some information is missing from your equipment you are supposed to supply.

You really need to go back and confirm the limits of your supply. Normally, the transformer supply would not include anything beyond matching the current transformers on the bushings with the CTs on the breakers and generators for differential protection. However, 400V transformers are rarely installed with differential protection.

For example, we can reasonably assume your supply does not include the generators shown connected to the step up transformers.

Yes Williams, the supply does not include the generators. Only the transformers and protection equipment and the panels.

Dear All,

I was able to come up with the list below. Kindly assist to confirm.

You appear to need to include the neutral ground resistor for the wye connection to the generating station step up transformer.

There will be a set of documents that detail the desired protection standards, the environmental requirements and the limit of supply including design engineering, drawings, installation, and the short circuit capability of the power system you connect to, future generation, operation parameters of the generators, and short circuit capability of the generators themselves.

With this information, it will be very easy for the sales engineers for each of the classes of switchgear to provide a quote. This RFQ would not be handled by a single person, except as a common point of contact for a team of engineers.

Iwould expect ABB, Siemens, Schneider would be a single source quote for this project, but you might do better by shopping the components out, unless you need to do the installation. In that case, hire an engineering firm, probably a $25,000 job if your client gave you good information. Someone drew the single line, not likely the end user.

Thank you once again.

No-one needs to operate on a task like this without having guidance. Ask the employer for appropriate training to carry it out. A Mentor would be of good value here.

Thank you. This is noted

I do not think a single person has the knowledge,skills,or ability to perform this job at this time in your career.

That is why it is important to have an experienced engineering firm perform the job.

I respect and admire your ambition,but knowledge is gained a step at the time,and skipping a valuable step can result in catastrophe.

I am sure that with your open mind and thirst for knowledge you will learn much from the company selected to perform the job.

Good luck in your quest,and I wish you much success as you climb the ladder of knowledge.