110kv级及以上变压器安装操作说明书(英文版).doc

Installation and Operation Manual for Power Transformer of 110kV and Above1Content1. Introduction1.1 Scope of Application1.2 Product Type Specification1.3 Transformer Structure2. Transporting and Hoisting2.1 Requirement for Transporting2.2 Subject Transporting2.3 Subject Hoisting2.4 Subject Pulling and Lifting3. Acceptance and Storage3.1 Inspection of Merchandise Received3.2 OOBA Acceptance for Accessories3.3 Acceptance Storage3.4 Insulating Oil Management4. Installation and Inspection of Transformer4.1 Preparation for Transformer Inspection4.2 Conditions and Precautions for Transformer Inspection4.3 Scope of Transformer Inspection4.4 Test of Transformer Inspection5. Integral Compounded Installation and Vacuum Oil Filling5.1 Preparation for Installation5.2 Installation Program Flow5.3 Vacuum and Vacuum Oil Filling5.4 Replenishment and Standing5.5 Vacuum Oil Filling of Transformer without InspectionInstallation and Operation Manual for Power Transformer of 110kV and Above25.6 Installation of Other Components6. Pre-test Inspection and Acceptance Trial6.1 Pre-test Inspection 6.2 Acceptance Trial7. Inspection Before Launch and Unload-energization 7.1 Inspection Before Operation7.2 Unload Test7.3 Unload-energization8. Operation and Maintenance8.1 Operation8.2 Maintenance8.3 Transformer Failure Analysis and ClearanceInstallation and Operation Manual for Power Transformer of 110kV and Above3ⅠⅠ. Introduction1.1 Scope of Application1.1.1 This specification is a document of technological guidance in installation and application, only applicable for oil-immersed transformer of 110kV (including off-circuit tap changing transformer, on load tap changing transformer, auto coupling transformer, and commutator transformer).1.1.2 Scope of Application: Requirements of transformer transporting by railway, road and ship; precautions for field acceptance and storage; field operation flow and acceptance trial; conditions for launch and daily maintenance; failure identification, etc.1.1.3 Application of this specification should be integrated with specific structure of transformer for proper construction according to relevant terms of technological requirements in the specification. For any question, please contact with the manufacturer for appropriate disposal.1.2 Product Type Specification1.2.1 Type Specification for Oil-immersed Power TransformerS F S Z □ - □ / □ Voltage Class (kV)Nominal Capacity (kVA)Code of Performance LevelVoltage Regulation Mode：“Yes”means on load tap changing， “No” means off-circuit tap changingWinding No.：“Yes” means three windings, “No” means two windings. Cooling system: “Yes” means air cooling, “No” means self cooling.Three-phase transformer1.2.2 Type Specification for Immersed-type high-temperature-resistance power transformerS F S R N Z - □ / □Voltage Class (kV)Nominal Capacity (kVA)Voltage Regulation Mode：“Yes”means on load tap changing， “No” means off-circuit tap changingHigh temperature resistanceInsulating (cooling) medium is fire-resistant fluid Winding No.：“Yes” means three windings, “No” means two windings.Cooling system: “Yes” means air cooling, “No” means self cooling.Three-phase transformerInstallation and Operation Manual for Power Transformer of 110kV and Above41.3 Transformer Structure1.3.1 CoreThe core is wholly made of high permeability grain-oriented cold-reduced silicon sheet steel, automatically assembled by E-shape fully automated card stacker imported from Switzerland. The burr at sheared edge is no longer than 0.02mm. Appropriate set-up colligation is used for orientation of core leg so as to increase mechanical intensity and decrease open circuit losses and noises.1.3.2 CoilHigh-voltage coil is formed by interleaved continuous winding for small capacity and inner-screen continuous winding for large capacity in order to improve the voltage property under impulse voltage and reach even voltage distribution. The stay and bracket are all planed round edges to improve insulation reliability. Twist directed forced oil structure is designed inside transformer winding so that each part can be fully cooled to decrease the temperature rise of winding and its thermal point and prolong the insulation life. High and medium voltage regulator is equipped with individual regulating wingding so that each winding has balanced ampere-turn, and consequently to decrease the axial electromotion at short circuit of transformer and improve its capability to resist sudden short circuit. The winding radial is designed in “0” margin, keeping dry and close fitting between core and low-voltage winding cylinder, stay and boarding set, and among low-voltage, high-voltage and regulating winding so that the entire winding has great tightness and concentricity.1.3.3 Subject InsulationThe winding insulators, such as stay, bracket, and all high-voltage electrode and metal structural components, are planed round angles in order to avoid point discharge; the winding should undergo a se。