Department of Electrical and Electronic Engineering

Power Networks EEEE3002

Definition of Technical Specs for Lab #5

This week’s simulation lab demonstrates the principle of load flow analysis for a power network. Up till now load flow has been applied to simple two port systems. In this coursework an interconnected three bus system is studied where each bus type is considered. This demonstrates how the known and unknown variables are typically distributed around the network.

Using the MATLAB Simulink software build the ideal 50 Hz network as shown in Figure 5.1 with the personalised set of data in Tables 5.1 and 5.2 (base VA of 100 MVA and a base voltage of 138 kV) which will be sent to you by email after the lab. Then, using the load flow calculator, provide the unknown values indicated by question marks in the tables 5.1.

From the results give the real and reactive power flow Use the template provided for your answers.

Figure 5.1 Example problem

Table 5.1 Example system bus data

(base VA of 100 MVA and a base voltage of 138 kV)

Table 5.2 Transmission line data for the three bus system

(base VA of 100 MVA and a base voltage of 138 kV)