Firstly, we need to clarify that power is a scalar, not a vector. Scalars only have numerical values and no directionality, such as mass, density, temperature, work, energy, etc., all belong to scalars. Vectors have both numerical magnitude and directionality, such as velocity, acceleration, force, etc. Power refers to the amount of work done by an object in a unit of time, and it only describes the speed of work done without directionality. Therefore, power is a scalar.
Let's take a look at the triangular transformer again. It is a special transformer structure composed of three coils, each occupying a phase, usually referred to as A-phase Phase B Phase C. The working principle of a triangular transformer is basically the same as that of a regular transformer, both of which achieve voltage transformation by changing the magnitude of electromagnetic induction. Due to its three-phase independent magnetic circuit, it has the characteristics of strong current balance and fault tolerance.
However, regardless of the type of transformer, its power is scalar, so the power of open delta/delta transformer groups is also scalar, without vectors. So, the statement about the power vector of an open delta/delta transformer group is not accurate, and we cannot directly provide the size or direction of its power vector.
In summary, the power of an open delta/delta transformer group is a scalar rather than a vector, so the magnitude or direction of its power vector cannot be given.
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