Mould casting type flexible direct-current cable soft joint reaction force cone structure designing method
A technology of reaction force cone and DC cable, which is applied in the direction of cable accessories, cable installation, electrical components, etc., can solve the problems of lack of theoretical support, etc., and achieve the effect of ensuring long-term safety and reliability, avoiding the accumulation of field strength, and uniform electric field
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Embodiment 1
[0137] This embodiment is an injection molded flexible straight submarine cable flexible joint with a rated voltage of ±525kV.
[0138] For ±525kV injection molded flexible straight submarine cable flexible joint, U=525kV; ρ 0 =10 16 Ω·m;
[0139] α=0.15 1 / °C; γ=2.2; r c =34.45mm; R=64.45mm; ρ T1 = 3.5 TΩ m;
[0140] W c = 30.5W;
[0141] Substituting the above values into formula (14), the expression can be obtained:
[0142]
[0143] Substitute y=64.45 into the above formula to get the length L of the reaction force cone curve C :
[0144]
[0145] L C =392.5mm
[0146] The flexible joint structure of ±525kV injection molded flexible straight cable is as follows: image 3 shown.
Embodiment 2
[0148] This embodiment is an injection molded flexible straight submarine cable flexible joint with a rated voltage of ±200kV.
[0149] For ±200kV injection molded flexible straight submarine cable flexible joint, U=200kV; ρ 0 =10 16 Ω·m;
[0150] α=0.15 1 / °C; γ=2.2; r c = 20.4mm; R = 35.4mm; R n =36.4mm; ρ T1 = 3.5 TΩ m;
[0151] W c =58W;
[0152] Substituting the above values into formula (14), the expression can be obtained:
[0153]
[0154] Substitute y=35.4 into the above formula to get the length L of the reaction force cone C :
[0155]
[0156] L C =156.4mm
[0157] The flexible joint structure of ±200kV injection molded flexible straight cable is as follows: Figure 4 shown.
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