Calculation of negative sequence impedance (in %) for Generator

Rating of 3phase generator is as follows-


Rated pf=0.85 lag

Rated voltage- 20 KV

Rated current-17465

Direct Axis Synchronous reactance(Xd)= 193%

Quadrature axis synchronous reactance (Xq)= 234%

Negative Sequence reactanceX2= 19.4%

Zero Sequence reactance = 12.6%

Resistance of stator winding per phase = 0.00131 ohm

This 3 phase Generator is connected with three single phase transformers. Rating for R phase transformer is as follows-


Voltage ratio= 21KV/420KV

Vector group- YNd1

Short circuit impedance(positive sequence) = 13.5%

Zero sequence impedance= 13.5%

whereas Ratings of other Y and B transformer are same . which is as follows


Voltage ratio- 20KV/400KV

HV current = 873.6

LV current =10083

Vector Group-YNd1

Short circuit impedance (positive sequence )= 14.5%

Short circuit impedance (zero sequence )=14.5%

HV side of these transformers are connected with Grid .calculate negative sequence impedance of generator in % because of unbalance in transformer rating.

Compétences : Electronique, Génie Électrique, Ingénierie, Design de circuits, Génie Mécanique

en voir plus : negative number worksheets generator, negative numbers worksheet generator, disel generator rating, positive negative integers worksheet generator, excel sequence number generator, negative sequence, negative sequence currents, negative sequence matlab, negative sequence current matlab, negative sequence project, free sequence diagram generator, online sequence diagram generator, 4 7 12 19 28 sequence, negative space logo generator, negative keyword list generator, weblogo: a sequence logo generator, number sequence formula generator, online sequence diagram generator java, negative space typography generator, free negative keyword list generator

Concernant l'employeur :
( 1 commentaire ) Sonebhadra, India

Nº du projet : #28316859

3 freelances font une offre moyenne de 1150 ₹ pour ce travail


I will give you perfect result. I am qualified engineer. Doin job in Power House.. i will do this. I am perfect candidate to do this job

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% INR en 7 jours
(0 Commentaires)

hello sir, I am professional in power systems like substation and equipment design in industry. I delivered lots of lectures in university also. I will solve problems like this and other also for you.

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% INR en 6 jours
(0 Commentaires)

I am an electrical engineer. I am studying power system subject. It's very easy for me. you can contact with me.

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% INR en 2 jours
(0 Commentaires)