Equivalent Modeling of DFIG-Based Wind Power Plant Considering Crowbar Protection

Table 3

DFIG units with crowbar protection conduction.

Grounding impedance	Detailed WPP	Before revision		After revision
		Right judgment	Wrong judgment	Right judgment	Wrong judgment
Ω	1(0)-(1), 1(3)–(10), 2(0)–(10), 3(0)-(1), 3(7)–(10), 4(0)–(10), 5(0), 5(9), 6(0)–(10)	1(0), 1(7)–(10), 2(0)–(10), 3(0), 3(7), 3(9)-(10), 4(0)–(10), 5(0), 6(0)–(10)	1(1), 1(3)–(6), 3(1), 3(8) 5(9)	1(0)-(1), 1(3)–(10), 2(0)–(10), 3(0)-(1), 3(7)–(10), 4(0)–(10), 5(0), 5(9), 6(0)–(10)	1(2), 5(10)
Ω	1(0), 2(0)–(10), 3(7), 4(0)–(10), 6(1), 6(5)–(10)	1(0), 2(0)–(10), 4(3)–(10), 6(5), 6(7), 6(9)-(10)	3(7), 4(0)–(2), 6(1), 6(6), 6(8)	1(0), 2(0)–(10), 3(7), 4(0)–(10), 6(1), 6(5)–(10)	None