Electrical energy transmission project in the year 2107

[m.s.j]

Let's imagine the year 2107.In that time electrical power will be generated in nuclear power plants and electrical energy will be produced in big nuclear reactors. Also the electrical energy will be transmitted by superconductor cables.
The electrical riddle no.5 is subjected to one of transmission line projects which intended by power plant owner (client).According to project technical documents, the contractor shall approach one of two DC transmission lines to other line (equal to "d" meter) without lines deenergizing.After that mentioned displacement, the cross distance of two lines changes from "d" meter to zero meter.

At the end of works, the representative of client who is electrical engineer shall account the amount of money that shall be paid to contractor.

He must estimate amount of done works by them. According to fundamental electromagnetic theory for enclosed energy estimation in one meter of transmission lines, he can write:


W=1/2∫vol B.H dv (∫vol =volume integral)

Also: i = ∫H. dl = H 2pr (p=3.14)

and dv = 2pr dr

W = 1/2∫vol B.H dv = 1/2∫0d B.i/2pr.2pr dr
(∫0d =integral between "0" and "d" meter)

Consequently, calculated done works by client are :

W = 1/2∫0d B.i dr

But the representative of contractor who is mechanical engineer thinks above mentioned calculation is not right and client shall be paid more money for done works.

According to fundamental mechanical theory, the representative of contractor tries to do calculation by the other way. He writes:


W =∫L F.dr


F = i x B


W= ∫0d Bidr


Consequently, done works calculated by contractor are:

W= ∫0d Bidr

Therefore amount of done works calculated by contractor are two time of client estimated.


What is your opinion? Who is right?

 

[Jhero]

I believe both the electrical engineer and the mechanical engineer have valid points, but their calculations are based on different principles and therefore may not be directly comparable.

The electrical engineer's calculation is based on the fundamental electromagnetic theory, which takes into account the energy stored in the transmission lines due to the magnetic field generated by the current. This is a valid approach for estimating the energy required to move the transmission lines without deenergizing them.

On the other hand, the mechanical engineer's calculation is based on the fundamental mechanical theory, which considers the force exerted on the transmission lines due to the interaction between the current and the magnetic field. This approach may be more suitable for estimating the physical work required to move the transmission lines.

In my opinion, both calculations are important and should be considered in determining the amount of work done by the contractor. The electrical engineer's calculation may be more relevant for estimating the energy consumed, while the mechanical engineer's calculation may be more relevant for estimating the physical effort required.

Ultimately, the final decision should be made by considering both approaches and coming to a consensus between the client and the contractor. It is important for both parties to have a clear understanding of each other's calculations and to reach a fair and reasonable agreement.