Modeling And Simulation Of Pingwei Plant 600MW Turbine System

With the rapid development of the state economics, more and more electric power is needed. The high-capacity and high-parameter power generating units are prevailing recently. As a result, workers who must have high operate skills have less chances to manipulate the unit, and what's more, some operations were forbidden. So, computer simulation technology meets the needs of training the workers.The current research state on the simulation system both at home and abroad in reviewed with the purpose of finding out our gap and indicating the development direction in this area.Based on the advanced simulation support system APROS, the full-scope dynamic simulation model of PINGWEI 600MW turbine system is developed and has already been put into operation which has gained good training results. The main content is as follows.The methods of modeling and debugging with simulation support system APROS are studied at first. The turbine system was divided into several subsystems by analyzing the plant, referring to some documents of Unit 1 of PingWei Power Plant such as P&ID graphs and all kinds of design and running data. And then models for graphic configuration were made with modules provided by APROS.For the lack of the models for the turbine system in APROS module library, several models were combined to develop the high-pressure heater, low-pressure heater, duplex pressure condenser with double-skin hull, vacuum suction model, the metal temperature and the expansion difference models of turbine system.The turbine model was debugged to make the key parameters'results in simulation under the condition of 100% load to fit for the rating data given by the plant. Furthermore, additional dynamic tests on turbine, high-pressure heater, low-pressure heater, deaerator, condenser and some tests of malfunction showed that the dynamic curve went the same way with the actual operating status or experience or theoretic analyse. Results show that simulation models of turbine are good enough to simulate the physical phenomena of the turbine-island in real time both on the static state and on the dynamic state.The presented simulation results of the turbine on the condition of full load, start up, shut down, and some fault show the developed turbine simulation system can well demonstrate the dynamic performances of the real utility turbine system. What'more, the model is simpleness and physics meanings is definituded, which is easy to transplant, expansion, maintenance, which provide a nicer flat roof for economy running and fault diagnoses.