I would like to know the impact of low-load operation of a steam turbine on the unit
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Our unit is a 3MW back-pressure steam turbine. It is summer now, and the amount of gas used is very low; basically, only around 5 tons of gas enters the system. The exhaust pressure is high, as is the exhaust temperature. I would like to know what effects this mode of operation has on the turbine What impact does the power transfer have on the upstream power grid? Which process parameters will be affected? Urgently needed, thank you all**.
The exhaust pressure and temperature should not be too high; it is best not to exceed the upper limits specified by the manufacturer. If these limits are exceeded, it is necessary to consult the manufacturer. As for the material of the exhaust pipes, I don’t have much knowledge in this area related to power generation; I hope experts can provide answers.
Thank you; I’m aware of this. The rated load for our generator is 3000. In summer, the demand for power isn’t as high, but management still expects the generator to generate electricity in order to make a profit. As a result, during summer the generator’s load is around 400, which exceeds the technical specifications provided by the manufacturer. What I want to know now is what effects such operation will have on the generator set – for example, on its service life, on the parameters of the upstream power supply network, especially the power factor, and also on which components of the generator set itself might be affected. Therefore, I hope engineers and technicians with relevant knowledge can provide some guidance.
Reply 1# Penang: The low load results in turbine blading losses; that is, the frictional heat between the impeller and the gas increases and cannot be dissipated, leading to a rise in temperature. This ultimately led to the turbine tripping. The solution shouldn’t be that difficult, right!