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Scenario 4 Consumption of P depends on V_1 Scenario 5 Consumption of P depends on V_1 Scenario 6 Max line current Scenario 7 Max line current Scenario 8 Max line current V_0 1 @ 35 COS Q AP/AV_1 V_0 135 ks 35 AP/AV_1 V_0 COS Q V_0 COS Q V_1 COS Q [KV] 36.75 [MW] [%/%] [KV] [MW] [%/%] [KV] [KV] [KV] 6.5 1 1.4 36.75 6.5 0.95 1.4 36.75 1 36.75 0.95 34 0.95 GENERAL DATA Line cable R XL [mm2] Ohms/km Ohms/km Length ated current [km] [A] 3 x 40 0.6766 0.33 22 150 Full Cable data (for info only) https://www.yifangcable.com/product/aluminium-conductors-steel-reinforced-acsr-bs-215-standard/ Sectional Stranding Strandin Approximate Sectional Sectional Nominal Area Steel & Wire g & Wire overall Diameter Area Aluminiu Breaking Area Area Weight Max. DC Resistance Current Load Rating diameter Steel Total at 20°C m mm2 mm mm mm mm2 mm2 mm2 kg/km kN Ohm/km A 25 6/2.36 1/2.36 7.08 26.24 4.38 30.62 106 9.61 1.093 126 30 6/2.59 1/2.59 7.77 31.61 5.27 36.88 128 11.45 0.9077 134 40 6/3.00 1/3.00 9 42.41 7.07 49.48 172 15.2 0.6766 161 50 6/3.35 1/3.35 10.05 52.88 8.82 61.7 214 18.35 0.5426 185 70 12/2.79 7/2.79 13.95 73.37 42.83 116.2 538 61.2 0.3936 268 100 6/4.72 7/1.57 14.15 105 13.5 118.5 394 32.7 0.2733 278

Scenario 4 Consumption of P depends on V_1 Scenario 5 Consumption of P depends on V_1 Scenario 6 Max line current Scenario 7 Max line current Scenario 8 Max line current V_0 1 @ 35 COS Q AP/AV_1 V_0 135 ks 35 AP/AV_1 V_0 COS Q V_0 COS Q V_1 COS Q [KV] 36.75 [MW] [%/%] [KV] [MW] [%/%] [KV] [KV] [KV] 6.5 1 1.4 36.75 6.5 0.95 1.4 36.75 1 36.75 0.95 34 0.95 GENERAL DATA Line cable R XL [mm2] Ohms/km Ohms/km Length ated current [km] [A] 3 x 40 0.6766 0.33 22 150 Full Cable data (for info only) https://www.yifangcable.com/product/aluminium-conductors-steel-reinforced-acsr-bs-215-standard/ Sectional Stranding Strandin Approximate Sectional Sectional Nominal Area Steel & Wire g & Wire overall Diameter Area Aluminiu Breaking Area Area Weight Max. DC Resistance Current Load Rating diameter Steel Total at 20°C m mm2 mm mm mm mm2 mm2 mm2 kg/km kN Ohm/km A 25 6/2.36 1/2.36 7.08 26.24 4.38 30.62 106 9.61 1.093 126 30 6/2.59 1/2.59 7.77 31.61 5.27 36.88 128 11.45 0.9077 134 40 6/3.00 1/3.00 9 42.41 7.07 49.48 172 15.2 0.6766 161 50 6/3.35 1/3.35 10.05 52.88 8.82 61.7 214 18.35 0.5426 185 70 12/2.79 7/2.79 13.95 73.37 42.83 116.2 538 61.2 0.3936 268 100 6/4.72 7/1.57 14.15 105 13.5 118.5 394 32.7 0.2733 278

Power System Analysis and Design (MindTap Course List)
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter6: Power Flows
Section: Chapter Questions
Problem 6.61P
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Analyse several voltage and current situations in different loading scenarios in a simplified radial (transformer to consumption) medium-voltage power system example. There are only 2 nodes in the 35 kV line – node 0 from the 110/35 kV and node 1 with one consumer.

Briefly reflect on the complexity of the calculations for known input or output voltage, as well as for fixed or voltage-dependent consumption in this simple power system model.
 

Analyse and discuss the sensitivity of the voltage drop [in % of amplitude and the degrees of phase] with respect to the current level [in %] and to the power factor.

Scenario 4 Consumption of P depends on V_1 Scenario 5 Consumption of P depends on V_1 Scenario 6 Max line current Scenario 7 Max line current Scenario 8 Max line current V_0 1 @ 35 COS Q AP/AV_1 V_0 135 ks 35 AP/AV_1 V_0 COS Q V_0 COS Q V_1 COS Q [KV] 36.75 [MW] [%/%] [KV] [MW] [%/%] [KV] [KV] [KV] 6.5 1 1.4 36.75 6.5 0.95 1.4 36.75 1 36.75 0.95 34 0.95 GENERAL DATA Line cable R XL [mm2] Ohms/km Ohms/km Length ated current [km] [A] 3 x 40 0.6766 0.33 22 150
Transcribed Image Text:Scenario 4 Consumption of P depends on V_1 Scenario 5 Consumption of P depends on V_1 Scenario 6 Max line current Scenario 7 Max line current Scenario 8 Max line current V_0 1 @ 35 COS Q AP/AV_1 V_0 135 ks 35 AP/AV_1 V_0 COS Q V_0 COS Q V_1 COS Q [KV] 36.75 [MW] [%/%] [KV] [MW] [%/%] [KV] [KV] [KV] 6.5 1 1.4 36.75 6.5 0.95 1.4 36.75 1 36.75 0.95 34 0.95 GENERAL DATA Line cable R XL [mm2] Ohms/km Ohms/km Length ated current [km] [A] 3 x 40 0.6766 0.33 22 150
Full Cable data (for info only) https://www.yifangcable.com/product/aluminium-conductors-steel-reinforced-acsr-bs-215-standard/ Sectional Stranding Strandin Approximate Sectional Sectional Nominal Area Steel & Wire g & Wire overall Diameter Area Aluminiu Breaking Area Area Weight Max. DC Resistance Current Load Rating diameter Steel Total at 20°C m mm2 mm mm mm mm2 mm2 mm2 kg/km kN Ohm/km A 25 6/2.36 1/2.36 7.08 26.24 4.38 30.62 106 9.61 1.093 126 30 6/2.59 1/2.59 7.77 31.61 5.27 36.88 128 11.45 0.9077 134 40 6/3.00 1/3.00 9 42.41 7.07 49.48 172 15.2 0.6766 161 50 6/3.35 1/3.35 10.05 52.88 8.82 61.7 214 18.35 0.5426 185 70 12/2.79 7/2.79 13.95 73.37 42.83 116.2 538 61.2 0.3936 268 100 6/4.72 7/1.57 14.15 105 13.5 118.5 394 32.7 0.2733 278
Transcribed Image Text:Full Cable data (for info only) https://www.yifangcable.com/product/aluminium-conductors-steel-reinforced-acsr-bs-215-standard/ Sectional Stranding Strandin Approximate Sectional Sectional Nominal Area Steel & Wire g & Wire overall Diameter Area Aluminiu Breaking Area Area Weight Max. DC Resistance Current Load Rating diameter Steel Total at 20°C m mm2 mm mm mm mm2 mm2 mm2 kg/km kN Ohm/km A 25 6/2.36 1/2.36 7.08 26.24 4.38 30.62 106 9.61 1.093 126 30 6/2.59 1/2.59 7.77 31.61 5.27 36.88 128 11.45 0.9077 134 40 6/3.00 1/3.00 9 42.41 7.07 49.48 172 15.2 0.6766 161 50 6/3.35 1/3.35 10.05 52.88 8.82 61.7 214 18.35 0.5426 185 70 12/2.79 7/2.79 13.95 73.37 42.83 116.2 538 61.2 0.3936 268 100 6/4.72 7/1.57 14.15 105 13.5 118.5 394 32.7 0.2733 278
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