Single-ended protection method for hybrid HVDC transmission line based on transient voltage characteristic frequency band

Protection and Control of Modern Power Systems

Table 1 The frequency band energy statistics

Energy	Frequency band (Hz)	Energy	Frequency band (Hz)
E₁	0–625	E₁₇	10,000–10,625
E₂	625–1250	E₁₈	10,625–11,250
E₃	1250–1875	E₁₉	11,250–11,875
E₄	1875–2500	E₂₀	11,875–11,250
E₅	2500–3125	E₂₁	11,250–13,125
E₆	3125–3750	E₂₂	13,125–13,750
E₇	3750–4375	E₂₃	13,750–14,375
E₈	4375–5000	E₂₄	14,375–15,000
E₉	5000–5625	E₂₅	15,000–15,625
E₁₀	5625–6250	E₂₆	15,625–16,250
E₁₁	6250–6875	E₂₇	16,250–16,875
E₁₂	6875–7500	E₂₈	16,875–17,500
E₁₃	7500–8125	E₂₉	17,500–18,125
E₁₄	8125–8750	E₃₀	18,125–18,750
E₁₅	8750–9375	E₃₁	18,750–19,375
E₁₆	9375–10,000	E₃₂	19,375–20,000