SIEMENS

Bhushan Power&Steel in India continues to place its trust in drive technology and automation systems from Siemens

Siemens VAI Metals Technologies has received an order from Bhushan Power&Steel Co. to supply the drives and automation system for expansion of the company's compact hot rolling mill in Orrissa, India. The scope of supply also includes two reactive-power compensators for electric arc furnaces. Commissioning is scheduled for July 2010.

In Orrissa, a federal state of India, Bhushan Power&Steel has been operating a compact hot rolling mill with an annual capacity of 0.8 million metric tons since April 2008. The plant is being expanded in order to double its capacity and also to enable rolling of thinner steel strips with a minimum thickness of 1.2 mm. To this end, the hot rolling mill is to be equipped with a second caster, a sixth finishing stand and a second coiler. Siemens is to supply and install the associated drives and automation system, which are based on the Siroll HM solution platform specially developed for hot rolling mills. For the first construction stage, Bhushan had already decided in favor of drives and automation systems from Siemens. Moreover, Siemens supplied the reactive-power compensation equipment for the drives and the electric arc furnaces.

Within the framework of the current project, Siemens is supplying additional cyclo-converters and the motor for the finishing stand, the main drive and the main motor for the coiler, as well as other auxiliary drives and motors for the new parts of the plant. The caster will be automated on the basis of Simatic S7 and PCS7 with Simelt CC Control. Simatic TDC and PCS7 systems will serve as the basis for extended automation of the finishing mill. On top of all this, Siemens is supplying two reactive-power compensators (Static Var Compensators, SVC) for the electric arc furnaces, whereby each compensator has an output of 120 Mvar. Simetal PQ (Power Quality) is being used to ensure the quality of the power supplied. Siemens is also responsible for installation supervision and commissioning of the supplied drives and automation system.

The automation solution from Siemens for the new parts of the plant is a uniform, integrated system with a high degree of standardization. Integrated diagnostic functions ensure a high level of transparency, simple operator control and the ability of the operating personnel to react quickly in the event of a fault. The open communication protocols will facilitate additions to the plant in future.