Optimal Sizing and Deployment of Renewable Energy Generators in Practical Transmission Network Using Grid-Oriented Multiobjective Harmony Search Algorithm for Loss Reduction and Voltage Profile Improvements

Table 7

Description of transformers.

From node no.	To node no.	Transformer symbol	Voltage ratio (kV)	MVAR capacity (MVA)	Values of transformer parameters
1	3	UT-1	400/220	3 × 315	Z1 = 0.14 pu; (X1/R1) = 20; Z0 = 0.14 pu; (X0/R0) = 20
2	4	UT-2	400/220	2 × 315	Z1 = 0.14 pu; (X1/R1) = 20; Z0 = 0.14 pu; (X0/R0) = 20
5	21	UT-3	220/132	3 × 100	Z1 = 0.12 pu; (X1/R1) = 20; Z0 = 0.12 pu; (X0/R0) = 20
8	20	UT-4	220/132	260	Z1 = 0.12 pu; (X1/R1) = 20; Z0 = 0.12 pu; (X0/R0) = 20
7	15	UT-5	220/132	570	Z1 = 0.12 pu; (X1/R1) = 20; Z0 = 0.12 pu; (X0/R0) = 20
6	14	UT-6	220/132	160	Z1 = 0.12 pu; (X1/R1) = 20; Z0 = 0.12 pu; (X0/R0) = 20
10	37	UT-7	220/132	100	Z1 = 0.12 pu; (X1/R1) = 20; Z0 = 0.12 pu; (X0/R0) = 20
9	26	UT-8	220/132 kV	260	Z1 = 0.12 pu; (X1/R1) = 20; Z0 = 0.12 pu; (X0/R0) = 20
11	44	UT-9	220/132	100	Z1 = 0.12 pu; (X1/R1) = 20; Z0 = 0.12 pu; (X0/R0) = 20
12	46	UT-10	220/132	2 × 100	Z1 = 0.12 pu; (X1/R1) = 20; Z0 = 0.12 pu; (X0/R0) = 20
13	62	UT-11	220/132	2 × 160	Z1 = 0.12 pu; (X1/R1) = 20; Z0 = 0.12 pu; (X0/R0) = 20