Indoor Substation Ventilation Heat Transformer Numerical Simulation Study And Countermeasures

With the continuous development of China’s economy, the transmission grid is expandingand covered the city quickly to speed up the construction of the urban network substation,substation distribution gradually increased. However, due to the urban network substationoften in the heart of the city, and at the same time bear the important task of supply;Therefore, in order to save land resources and to consider and cities around thearchitectural style in harmony, and the angle of the substation noise impact on the urbanenvironment departure, city substation design generally require the use of the indoor typelayout.Compare with the past, the biggest difference between the total indoor substation incity network and the substation with traditional design was the former main transformerincluding all equipment placed indoors. This requires that we consider if the high-voltage,large-capacity power transformer which is placed in the indoor can rated output power thesame scale layout with outdoor transformer. The most critical thing is cooling andventilation of indoor transformer. To ensure the normal operation of the transformer, a lotof heat generated by the transformer in operation due to normal wear and tear through thevents of the transformer room must timely exhausted to the outside. This can ensure thatthe urgent problem of the indoor urban network substation work properly. In accordancewith a Chongqing substation, I started from the air flow and heat transfer mechanism of theindoor transformer, researched it heat from the transformer itself into the transformer roomexhaust port location, size and height of the transformer room between each other relationsproposed the indoor transformer room building ventilation professional requirements.This thesis is mainly from the following aspects of the indoor substation ventilationstudies:First, Searching and reading a lot of literature about domestic and foreign indoorsubstation Research and research, and summarized its research.Secondly, the indoor substation heat, according to the given parameter of GB andrequests, I build the main part of the substations and transformers, and otherthree-dimensional modeling, calculated the amount of heat and ventilation rate, find outwhere the problem was. Use FLUENT to Numerical simulation of three-dimensionalmodel,with the processing software CFD-POST to discuss results of the analysis to identify feasible countermeasures.Finally, according to the specific circumstances of the simulation results comparingthe actual added at the inlet deflector to change the air flow path, and to increase theeffective air area to improve the substation cooling effect.Through the of indoor substation heat problem, I have a more profound understandingof the advantages and disadvantages of the various solutions, and by reading a lot of booksand literature and the actual design calculations, not only improved my professional level,but also lay a good foundation in design for the future in enterprise.