【Weekly Topic 20101208】Is it feasible to use a steam turbine to drive a 1600KW fan and generate electricity via an electric motor?
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This post was last edited by zhaohh3211 on 2010-12-8 at 16:47. [Weekly Topic 20101208] The original fan had a power rating of 1600 KW; now, steam turbines will be used to drive the fan, while the original 10 KV high-voltage motor will remain in use. If there is excess steam, it will be used for power generation, and if there isn’t enough steam, the motor will drive the fan. Is this feasible? If so, since both power generation and power consumption are required, how can this be achieved from an electrical perspective? Can both synchronous and asynchronous motors be used for power generation? Talk as much as you can, and use the final summary as a reference answer.
I think it’s feasible; the fan needs to have its shaft replaced, with one end connected to the synchronous mechanism and the other end to the steam turbine. Two clutches may also be necessary, as asynchronous motors cannot be used for power generation!
It is recommended to retain the existing high-pressure motors and fans; an additional fan driven by steam can be added. This approach involves minimal changes and does not affect production. If electricity is generated, it can be difficult to balance electrical and steam power, while a turbine allows for easy adjustment of output and power. The choice of turbine depends on the parameters of the high-pressure steam, as well as the low-pressure steam requirements of the process – whether to use a backpressure turbine, a condensing turbine, or a extraction turbine
This post was last edited by Baghdad on 2011-5-27 at 14:15. As we all know, electricity can be generated either by using motors to drive generators or by using steam turbines to drive them; this is undisputed in theory. DC synchronous motors can generate electricity, while AC asynchronous motors cannot be used for power generation. The key question is: what device is used to control the frequency when generating electricity with steam, and how can the 50HZ requirement be achieved stably? Using a motor to drive a fan to generate electricity when there is insufficient steam is a waste of energy; as a result, the electrical consumption exceeds the amount of electricity produced by the generator, which can be explained by the law of conservation of energy. To determine whether the specific plan is feasible, many factors need to be considered, such as the amount of residual steam energy, the range of fluid volume changes, the safety mechanisms for grid connection, and costs.