transformerplant

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  • The most complete explanation of transformer cooling system
    The most complete explanation of transformer cooling system
    The cooling system of the power transformer consists of two parts: the internal cooling system, which ensures that the heat of the winding and the iron core is dissipated into the surrounding medium; the external cooling system, which ensures that the heat in the medium is dissipated to the outside of the transformer. According to the size of the transformer capacity, the medium and the type of circulation, the transformer adopts different cooling methods.
  • The difference between the action principle of the main variable light and heavy gas protection
    The difference between the action principle of the main variable light and heavy gas protection
    Corresponding protection devices shall be installed for the short-circuit faults of the transformer lead wires, bushings and internals, and shall meet the following requirements: 1) The single-running transformer of 10MVA and above and the parallel running transformer of 6.3MVA and above should be equipped with longitudinal differential protection. Important transformers with 6.3MVA and below operating independently can also be equipped with longitudinal differential protection.2) Transformers below 10MVA can be equipped with current quick-break protection and overcurrent protection. For transformers of 2MVA and above, when the current quick-break sensitivity coefficient does not meet the requirements, longitudinal differential protection should be installed. 3) 0.4MVA and above, the primary voltage is 10kV and below, and the coil is a transformer with a delta-star connection, and a two-phase three-relay type overcurrent protection can be used.4) The various protection devices specified in this article shall operate to disconnect the circuit breakers on each side of the transformer.
  • Must see! A comprehensive explanation of the composition, structure, oil system and fault operation and maintenance
    Must see! A comprehensive explanation of the composition, structure, oil system and fault operation and maintenance
    Oil-immersed transformers have the characteristics of good heat dissipation, low loss, large capacity and low price. At present, most of the power transformers running on the grid are oil-immersed transformers, of which more than 80% are cooled by natural oil circulation. It is a commonly used cooling structure to set a guide plate in the coil of a natural oil circulation transformer. This paper focuses on analyzing the structure, operation and maintenance of oil-immersed power transformers, and specifically analyzes the oil system of oil-immersed power transformers, and briefly analyzes the faults of oil-immersed power transformers. Hope to increase understanding and analysis of my country's oil-immersed power transformers.
  • How much KW power consumption can a 1000KVA transformer withstand?
    How much KW power consumption can a 1000KVA transformer withstand?
    Question:"There is an old-fashioned transformer of 1000KVA with an existing load of about 200KW. If a new load of about 600KW is to be added, can this transformer withstand it?" 
  • Inventory! 7 types of fault judgment methods and solutions for dry-type transformer noise, worth collecting!
    Inventory! 7 types of fault judgment methods and solutions for dry-type transformer noise, worth collecting!
    This article mainly counts 7 types of fault judgment methods and solution analysis of dry-type transformer noise. If there is any error or omission, please point it out in the comment area.Analysis of 7 types of fault judgment methods and solutions for dry-type transformer noise➢Resonance problems of fans, casings and other components➢Installation problems➢Influence of installation environment➢The problem of vibration of busbar bridge➢Transformer core resonates by itself.➢Transformer coil self-resonance➢The problem of the nature of the load
  • Power Transformer Basics
    Power Transformer Basics
    1. Classification and models of power transformers2. 1. Classification by use3. (1) Step-up transformer: used by the power plant to transmit electricity to the outside.4. (2) Step-down transformer: The substation of the power supply bureau is used for voltage conversion.5. (3) Distribution transformer: used to supply power to users.6. (4) Plant transformer: Provides internal electricity for the power plant.7. (5) Transformer for station: Provide internal electricity for the substation.8. (6) Converter transformer: for DC power transmission, one side is connected to AC power, and one side is connected to the converter valve.9. (7) Rectifier transformer: used in thermal power plants to supply power to electrostatic precipitators.
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