The 600 MW Advanced Ultra-Supercritical Reference Power PlantDevelopment Program for North RhineWestphalia- A Solid Basis for FutureCoal-Fired Plants Worldwide

摘要

Today's challenge for the power generation industry worldwide is more than ever beforeto assure reliable and cost effective power supply, to minimize environmental impactand to prudently use existing fuel resources.The North Rhine Westphalia Reference Power Plant program entails the developmentof a hard coal power plant, based on European market requirements for 2008 andbeyond. Participants in this one-year development program included major Europeanplant engineering companies and major German utilities like EON, Steag, RWE, MarkE, et.al., in cooperation with the VGB and the scientific community. With the objective ofdeveloping an economic, yet highly efficient steam power plant, more than 80 innovativeideas were investigated and evaluated. Boundary conditions and parameters for thetechnical and economical evaluations were determined by the participating utilities, whoadditionally were responsible for evaluating the operability of the plant. With anassumed 2008 commissioning date for the reference power plant, the design isexclusively based on materials and technology which are available today and haveproven their reliability in use.Siemens Power Generation was responsible for the steam turbine generator design, foroptimization of the water/steam cycle, for the turbine building design and the overallplant arrangement design. The concept is based on ultra supercritical steam parametersof 4130 psi (285 bar), 1112 °F (600 °C) main steam and 1148 °F (620 °C) reheatsteam temperature. Where required, the steam turbine employs today’s most advancedmaterials based on nickel and titanium alloys to withstand the stresses caused by thehigh temperature and the centrifugal forces. Together with specific measures tooptimize the water/steam cycle and to minimize auxiliary power consumption, this leadsto net plant efficiencies of 46% (inland location) and 47% (coastal location) . This netefficiency was determined to be the optimum balance between plant economics andenvironmental requirements. In addition the development program addresses measuresto achieve efficiencies of 48% and more.The paper will discuss the major innovations based on consideration of plant economicsand plant operability evaluations. In addition details of the water/steam cycle