Analysis of Transmission and Distribution Networks
Clarify the following concepts please,
(a) Transmission and distribution systems and their analysis;
(b) Power factor analysis and its balancing.
You should not only present results but analyze them in accordance with the theoretical fundamentals and calculations.
Required Software and Hardware:
Suggested to use MATLAB Simulink software package with Simscape Electrical toolbox.
Tasks to complete.
The following system should be analyzed:
Where G-1 and 4-M are the distribution systems (parameters for MV) and the link 2-3 is the transmission system (HV notions). Generator and motor (load) are directly connected to the MV system and they don’t require the additional transformation of the voltage level. You should analyze the system, using the following parameters:
Data Input can be found in attached document
The following should be noted:
1) Transformers: ratings are equal to the rating of the base generation power, both T1 and T2 have operating voltages of HV and MV, as given to each student. Internal impedance for both transformers is X=0.1 p.u.
2) MV distributions lines have impedance of (0.01+j0.12) Ohm/km; HV transmission lines have impedances of (0.005+j0.08) Ohm/km. Length of the distribution lines for G-1 and 4-M are equal and can be found as (0.5*(Length of MV from the table)).
3) Losses in Generator are presented as X=0.2 p.u.
4) Resistance of the motor are shown as X=0.2 p.u.
You should analyse the following
a) Draw the system diagram with all values being converted in p.u. values;
b) Construct impedance matrices of the system;
c) Analyse the applied phase shift in the transmission and distribution systems, considering that the output of Generator has 00 phase shift. Calculate current in each segment of the network;
d) Analyse PF for the system when the motor is not connected;
e) Calculate required capacitor, needs to be added before the motor to achieve PF unity.
What to submit:
You should clearly write all solutions to the questions and separate the calculations.
The write up part
The hand written solution - picture
Clear explanation of the theory
matlab code - just easy short explanation of the code
Explain the solution and steps
one line each
the explanation shouldn't exceed more than a page - just make it clear to be understood