Ic GIS变电站最大长期工作电流Igmax 262.432Ab.动稳

Ic GIS变电站最大长期工作电流Igmax 262.432Ab.动稳定校验110 kV侧母线三相短路冲击电流Ia=51.204 kA所选开关柜隔离开关的额定动稳定电流I=80 kAI GIS变电站最大长期工作电流Igmax =262.432Ab.动稳定校验110 kV侧母线三相短路冲击电流Ich=51.204 kA所选开关柜接地开关的额定动稳定电流I=80 kAIch GIS变电站最大长期工作电流Igmax =262.432Ab.110kV侧母线三相短路稳态电流=20.08 kA所选开关柜断路器的额定热稳定电流为31.5 kA所以符合要求。电压互感器(PT)、避雷器不需要检验其动稳定性和热稳定性，因此此处未做校验。设备的选择(1) .额定电压: Ue=35kV (2) .额定电流: le> GIS变电站最大长期工作电流Igmax，即(3) .根据以上分析，选择西安高压开关厂的KYN7-40.5型铠装移开式户内交流金属封闭开关柜，有关参数如表4-2所示。表4-2 KYN7-40. 5型铠装移开式户内交流金属封闭开关柜主要参数表[17]项目单位参数额定电压 kV 40.5主母线额定电流 A 1600额定热稳定电流 kA 20额定动稳定电流 kA 50工频耐受电压 kV 95雷电冲击耐受电压 kV 185(4) .校验①. Ue=35kV, I=1600A>GIS变电站最大长期工作电流Igmax =824.786A②.动稳定校验35 kV侧母线三相短路冲击电流lch=10.608 kA所选开关柜的额定动稳定电流I=50 kAIchGIS 变电站最大长期工作电流Igmax=4811.252A②.②.动稳定校验10kV侧母线三相短路冲击电流Ich=99.450 kA所选开关柜的额定动稳定电流I=125 kAIa

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结果 (英语) 1: [复制]

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Ic GIS substation maximum long-term working current Igmax 262.432A b. Dynamic stability verification 110 kV side bus three-phase short-circuit impulse current Ia = 51.204 kA Rated dynamic stable current of selected switchgear disconnector I = 80 kA I GIS substation maximum long-term operation Current Igmax = 262.432A b. Dynamic stability verification 110 kV side bus three-phase short-circuit impulse current Ich = 51.204 kA Rated dynamic stable current of the selected switchgear grounding switch I = 80 kA Ich GIS substation maximum long-term working current Igmax = 262.432A b. 110kV side bus three-phase short-circuit steady-state current = 20.08 kA The rated thermal stability current of the selected switchgear circuit breaker is 31.5 kA, so it meets the requirements. Voltage transformer (PT), the arrester need not test its thermal stability and dynamic stability, so here without making correction experience. Selection of equipment (1). Rated voltage: Ue = 35kV (2). Rated current: le> Maximum long-term working current Igmax of GIS substation, namely (3). Based on the above analysis, choose the KYN7-40.5 type armor of Xi’an High Voltage Switchgear Factory Removable indoor AC metal enclosed switchgear, the relevant parameters are shown in Table 4-2. Table 4-2 KYN7-40. Main parameter table of type 5 armored removable indoor AC metal-enclosed switchgear [17] Project unit parameters Rated voltage kV 40.5 Main bus rated current A 1600 Rated thermal stability current kA 20 Rated dynamic stability Current kA 50 Power frequency withstand voltage kV 95 Lightning impulse withstand voltage kV 185 (4). Check ①. Ue = 35kV, I = 1600A> GIS substation maximum long-term working current Igmax = 824.786A ②. Dynamic stability check 35 kV side bus three-phase short-circuit impulse current lch = Rated dynamic stable current of 10.608 kA selected switchgear I = 50 kA IchGIS substation maximum long-term working current Igmax = 4811.252A ②.②. Dynamic stability verification 10kV side bus three-phase short-circuit impact current Ich = 99.450 kA selected switchgear Rated dynamic stable current I = 125 kA Ia

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结果 (英语) 2:[复制]

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Ic GIS substation maximum long-term operating current Igmax 262.432A b. Dynamic stability check 110 kV side bus three-phase short-circuit impact current Ia-51.204 kA Rated stable current for selected switch cabinet isolation switch I -80 kA I GIS substation maximum long-term operating current Igmax s 262.432A b. Dynamic stability check 110 kV side bus three-phase short-circuit impact current Ich - 51.204 kA Rated stable current for selected switch cabinet ground switch I -80 kA Ich GIS substation maximum long-term operating current Igmax s 262.432A b.110kV side bus three-phase short-circuit steady-state current : 20.08 kA The selected switch cabinet circuit breaker is rated at 31.5 kA, so it meets the requirements. Voltage transformers (Pts) and lightning eresisors do not need to be tested for dynamic and thermal stability, so it is not Inspection. Choice of equipment (1) .Rated voltage: Ue s 35kV (2) .Rated current: Igmax maximum long-term operating current for the le-GIS substation, i.e. (3) According to the above analysis, the selection of Xi'an high-voltage switch factory KYN7-40.5 type armored moving indoor AC metal closed switch cabinet, the relevant parameters as shown in Table 4-2. Table 4-2 KYN7-40. Type 5 armored move inside ac metal closed switch cabinet main parameter table Project Unit Parameter Rated voltage kV 40.5 Main bus rated current A 1600 Rated thermal stabilization current kA 20 Rated actstability current kA 50 Frequency resistance voltage kV 95 Lightning shock resistance voltage kV 185 (4) .Check (1). Ue s 35kV, I-1600A-GIS substation maximum long-term operating current Igmax s 824.786A (2) Dynamic stability check 35 kV side bus three-phase short-circuit impact current lch s 10.608 kA Rated stable current for selected switch cabinet I -50 kA IchGIS substation maximum long-term operating current Igmax s 4811.252A (2) (2) Dynamic Stability Check 10kV side bus three-phase short-circuit impact current Ich - 99.450 kA Rated stable current for selected switch cabinet I -125 kA Ia

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结果 (英语) 3:[复制]

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Maximum long-term working current of IC GIS Substation igmax 262.432a b. Dynamic stability verification 110 kV side bus three-phase short-circuit impulse current ia = 51.204 Ka Rated dynamic stable current of disconnector of selected switch cabinet I = 80 Ka Igmax = 262.432a b. Dynamic stability verification 110 kV side bus three-phase short-circuit impulse current ICH = 51.204 Ka Rated dynamic stable current of grounding switch of selected switch cabinet I = 80 Ka ICH GIS Substation maximum long-term working current igmax = 262.432a b. 110kV side bus three-phase short-circuit steady-state current = 20.08 Ka The rated thermal stability current of the selected switch cabinet breaker is 31.5KA, so it meets the requirements. The dynamic stability and thermal stability of Pt and arrester do not need to be tested, so they are not calibrated here Proven. Selection of equipment (1) . rated voltage: UE = 35kV (2) . rated current: Le > maximum long-term working current igmax of GIS Substation, i.e (3) According to the above analysis, kyn7-40.5 armored movable indoor AC metal enclosed switchgear of Xi'an high voltage switchgear plant is selected, and relevant parameters are shown in Table 4-2. Table 4-2 main parameters of kyn7-40.5 armored movable indoor AC metal enclosed switchgear [17] Project unit parameters Rated voltage kV 40.5 Rated current of main bus a 1600 Rated thermal stability current KA 20 Rated dynamic stable current KA 50 Power frequency withstand voltage kV 95 Lightning impulse withstand voltage kV 185 (4). Verification. ① . UE = 35kV, I = 1600A > GIS Substation maximum long-term working current igmax = 824.786a ② . dynamic stability verification 35 kV side bus three-phase short-circuit impulse current LCH = 10.608 Ka Rated dynamic stable current of selected switch cabinet I = 50 Ka Ichgis substation maximum long-term working current igmax = 4811.252a ② . ② dynamic stability verification 10kV side bus three-phase short-circuit impulse current ICH = 99.450 Ka Rated dynamic stable current of selected switch cabinet I = 125 Ka Ia

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