Power Quality Investigation of Distribution Networks Embedded Wind Turbines

Table 3

DGs connection point and penetration ratio effect on the distribution system steady state voltages.

DG PCC	Number of DG units	FSIG		⁢ with DFIG		⁢UPF with PMSG
			At bus		At bus		At bus
Bus 3	1	0.948	15	0.947	15	0.949	15
	2	0.950	15	0.948	15	0.953	15
	3	0.952	15	0.948	15	0.956	15
	4	0.954	15	0.948	15	0.959	15
Bus 5	1	0.951	15	0.961	15	0.954	15
	2	0.955	15	0.968	15	0.961	15
	3	0.959	15	0.971	15	0.968	15
	4	0.962	15	0.973	15	0.973	15
Bus 7	1	0.951	15	0.966	15	0.955	15
	2	0.956	15	0.973	15	0.963	15
	3	0.960	15	0.977	15	0.971	15
	4	0.963	15	0.979	15	0.977	15
Bus 9	1	0.952	15	0.970	15	0.957	15
	2	0.959	15	0.979	15	0.966	15
	3	0.962	15	0.983	15	0.975	15
	4	0.965	15	0.985	15	0.982	15
Bus 11	1	0.953	15	0.975	15	0.959	15
	2	0.960	15	0.984	15	0.970	15
	3	0.964	15	0.988	15	0.979	15
	4	0.966	15	0.990	15	0.987	15
Bus 13	1	0.954	15	0.979	15	0.961	15
	2	0.961	15	0.987	13	0.973	15
	3	0.965	15	0.989	12	0.982	10
	4	0.965	15	0.989	12	0.986	9
Bus 15	1	0.955	14	0.977	11	0.962	13
	2	0.959	13	0.981	11	0.972	12
	3	0.959	13	0.982	10	0.977	11
	4	0.948	13	0.979	10	0.978	10