An intelligent and economical operation system for steam turbine generator set

Abstract

The invention relates to an intelligent economic operation system of a steam turbine generator unit. The intelligent economic operation system comprises a data acquisition module, an intelligent algorithm computation module and a control module, wherein the data acquisition module is connected with the intelligent algorithm computation module, the intelligent algorithm computation module is connected with the control module, the control module is connected with a unit DCS control system and a unit coordinated control system, the data acquisition module is used for collecting real-time operating data of the DCS system of the generator unit and transmitting to the intelligent algorithm computation module, the intelligent algorithm computation module is used for calculating the current unit load, the optimal main steam pressure of a steam turbine at the temperature of circulating water and the optimal variable frequency of a water circulating pump by virtue of a sliding pressure optimization calculation module and a water circulating pump optimization calculation module, the optimal main steam pressure value and the optimal variable frequency value of the water circulating pump are transmitted to the unit DCS control system and the unit coordinated control system by virtue of the control system module, the unit is automatically adjusted to operate in a real-time optimization mode,and the intelligent economic operation of the steam turbine generator unit is realized.

Description

technical field [0001] The invention relates to an intelligent system for improving the operating economy of a steam turbine generator set, which belongs to the technical field of the steam turbine generator set. Background technique [0002] The clean and efficient utilization of coal is of great significance to my country's energy strategy. Power generation is the main aspect of clean and efficient utilization of coal. Optimizing the operation mode of turbo-generator sets and improving the economy of power generation operation has become an important measure for power generation enterprises to save energy and reduce consumption. [0003] The economical operation of the sliding pressure of the steam turbine and the economical operation of the circulating water system are important aspects to improve the operating economy of the steam turbine generator set. However, it has been found in practice that the current optimization of the sliding pressure operation and the optimi...

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Problems solved by technology

At the same time, the change of the sliding pressure operation mode leads to the change of the exhaust steam energy of the low-pressure cylinder of the steam turbine, which in turn affects the exhaust steam pressure of the steam turbine, resulting in the change of the operation mode of the circulating water system

When the unit is running, if the sliding pressure optimization operation is implemented alone, the optimization effect of the circulating water operation will be affected; if the circulating water system optimization operation is implemented alone, the exhaust pressure will be affected, and the sliding pressure optimization operation effect will be affected

During the actual operation, it is difficult for operators to consider the optimization mode of sliding pressure operation and circulating water system operation at the same time. Even if some operators with field experience consider optimizing at the same time, they need to perform repeated operations, which increases the difficulty of operation and is not conducive to power plants. Intelligent operation

[0007] At present, no algorithm or implementation case has been found that combines the sliding pressure optimization operation with the circulating water system optimization operation. Domestic power plants or related research institutions have not optimized the operation of the steam turbine sliding pressure operation and the circulating water system as a whole system, which greatly reduces The economic effect of the operation of the steam turbine generator set

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