Rapid fuzzy control system and control method for auxiliary start and stop of thermal power generating unit

Abstract

The invention discloses a thermal power generating unit auxiliary start-stop rapid fuzzy control system and a control method. The system comprises a unit heat storage capacity calculation module, an auxiliary start-stop performance simulation calculation module, an auxiliary start-stop performance analysis decision module and an auxiliary start-stop performance rapid fuzzy control module. The unit heat storage capacity calculation module is used for calculating the heat storage adjusting capacity currently possessed by the boiler and the unit heat regeneration system according to the change condition of the operating parameters in the unit load changing process; the auxiliary start-stop performance simulation calculation module is used for calculating unit auxiliary start-stop comprehensive performance indexes in real time according to a calculation formula of the unit auxiliary start-stop comprehensive performance indexes provided by network dispatching, and the auxiliary start-stop performance analysis decision module is used for analyzing main factors influencing the unit auxiliary start-stop performance; a fuzzy set theory is adopted for auxiliary start-stop performance, and boiler load instructions and steam turbine load instructions are rapidly adjusted in real time. The comprehensive performance of auxiliary starting and stopping of the thermal power generating unit can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of coal-fired power generation, and in particular relates to a fast fuzzy control system and control method for auxiliary start-stop of a thermal power unit. Background technique [0002] As the proportion of new energy power generation in the power grid gradually expands, the load of new energy power generation is greatly affected by environmental factors such as weather, and there are many uncontrolled factors in the power generation load, resulting in a greater impact on the frequency of the power grid, which will affect the power grid Stability of operation. Compared with new energy power generation methods, coal power has better peak shaving and start-stop performance. In this case, improving the auxiliary start-stop performance of thermal power units has become one of the main ways to maintain stable operation of the power grid. It can be foreseen that the auxiliary start-stop transformation of therma...

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Problems solved by technology

[0002] As the proportion of new energy power generation in the power grid gradually expands, the load of new energy power generation is greatly affected by environmental factors such as weather, and there are many uncontrolled factors in the power generation load, resulting in a greater impact on the frequency of the power grid, which will affect the power grid Stability of operation

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