【正文】 May, 2022 Power Transmission and Distribution Transformers The noise is generated by the core 噪聲由鐵芯產生 The main responsible for the noise is the core. 噪聲主要來自鐵芯。 % / 121 /11 kV YNyn0d11 STC serial no. 500901 (2022) 佛山 EPIB 150MVA 220 177。Jinan, May, 2022 Power Transmission and Distribution Transformers High performance Power Transformers ?High performance into your benefit 高性能給您帶來利益 高 性 能的 電力變壓器 Jinan, May, 2022 Power Transmission and Distribution Transformers The 8 features of STC transformers 西門子變壓器的八大特點 靜 韌 固 省 凈 穩(wěn) 簡 壽 Jinan, May, 2022 Power Transmission and Distribution Transformers Shortcircuit withstand capability 抗短路能力 Jinan, May, 2022 Power Transmission and Distribution Transformers Advanced Technology and Robust Design 先進的技術和耐用的設計 TEMPERATURE not important 溫度 不重要 FORCES very important 短路力 非常重要 calculation of forces with advanced finite elements programs from Germany 使用德國高級有限元程序進行短路力計算 all possible situations are considered (Chinese work) 設計時考慮 (中國電網 ) 可能出現的各種情況 design withstands the worst case 設計可經受最壞情況考驗 Example of analysed linetoearth fault cases for a three phase transformer with three windings 三相三線圈變壓器接地故障 類 型分析示例 Jinan, May, 2022 Power Transmission and Distribution Transformers Our technology reduces the appearing forces 西門子技術降低短路力 knowhow in ELECTRICAL DESIGN to reduce forces to the minimum possible levels 通過電磁計算將短路力減少到可能的最小水平 例如 ： ? optimized arrangement of windings 優(yōu)化線圈布置 ? careful selection of type of windings and type of conductors 正確選擇線圈形式及導線類型 Foi ? ? HW Foi HW = winding length 線圈高度 ? = axial displacement (? % of HW) 軸向偏移 Foi = outside impulse force 對外沖擊力 Fax1 W 2 W 1 Jinan, May, 2022 Power Transmission and Distribution Transformers Mechanical strength 機械強度 hard as a rock 堅如磐石 Pressing of winding 線圈壓緊 ? pressing plates 壓板 Clamping frame 夾件 ? withstands extreme loads 耐受極大負荷 Example Jinan, May, 2022 Power Transmission and Distribution Transformers Advanced manufacturing 先進的生產工藝和制造 Strict manufacturing tolerancies 嚴格的制造公差 ? winding height 線圈高度 ? JB 部頒標準為 +5 8 mm ? STC 西門子為 +0 2 mm ? inner diameter 內徑 ? JB 部頒標準為 +4 5 mm ? STC 西門子為 +2 0 mm ? outer diameter 外徑 ? JB 部頒標準為 +6 4 mm ? STC 西門子為 2 +0 mm JB 部頒標準為 JB/T56011 Stateoftheart processing, such as 先進的工藝過程，例如 ? 3 times pressing for each winding 每一個線圈進行 3 次壓緊 ? tightness control during winding 線圈繞制過程緊度控制 Jinan, May, 2022 Power Transmission and Distribution Transformers Tap winding between main windings 主線圈之間的調壓線圈 Between the main windings the ampereturns are the highest, . the electrical loading is the highest 主線圈間的安匝即磁場強度是最高的 The position for the tap winding in this area is not convenient 這一位置對該區(qū)域的調壓線圈不夠方便 Jinan, May, 2022 Power Transmission and Distribution Transformers State of the Art Inovation 創(chuàng)新的線圈壓緊工藝 Self bonding conductors 自粘換位導線的使用 Vapour phase advanced drying 先進的氣相干燥 Constant hydraulic pressing 恒壓干燥 Jinan, May, 2022 Power Transmission and Distribution Transformers How the reactor is connected? 電抗器是怎樣連接的 ? reactor is in series with the low voltage winding 電抗器與低壓線圈串聯 advantage: the voltage stress is minimal (low vo