Optimized Design Of Marine Power Equipment Boiler-turbine Coordination

Steam power plant is the main power plant of a large ship, which determines the speed, flexibility and endurance of the ship, and other important technical performance. Marine steam boiler is the major power plant equipment, forming the main propulsion plant and steam power plant in an important position.When steam power plant is operating, frequent changes in the load, large margin, the control system in response to the high performance requirements, in particular the coordination of the machine furnace control systems require higher. Steam frequently by the owners of a quick closing speed direct parking, and sometimes even the greatest running rpm rated speed directly related parking, and sometimes directly leaping from the parking to a state of speed. The main steam turbine running in this way, the main pressurized boiler is the impact load and the main turbine load all the changes needed to coordinate the control of the main boilers. Marine main pressurized boiler by the use of environmental decisions, the relative land boilers are smaller and heat capacity are also small. If it don't use reasonable boiler-turbine coordinated control system, the main boiler will very difficult to meet the frequent changing requirements of the load significantly.Based on the coordination of power plant control system analysis, for the entire heater units as well as the classification method has been characterized by a detailed study trip, and described the overall boiler-turbine coordinated the basic idea. Through the marine supercharged boiler and steam turbine power system structure and working principle of the research and analysis, given simplified model system, and according to some of the parameters of power systems, analyze the stability of this system working condition points, select a typical case of several points as the fundamental design Based on the analysis and design to improve the sliding pressure boiler-turbine control system, as the last local controller, combined with fuzzy multi-model controller, for the entire furnace system to coordinate a visit by the design and use of MATLAB simulation software, has been Better control.