Steam turbine power regulation method and equipment without PID

Abstract

The invention discloses a steam turbine power regulation method and equipment without a PID. The steam turbine power regulation method comprises the following steps: an active power set value of a steam turbine and an active power actual value of the steam turbine are compared; when the active power set value is greater than a preset threshold value of the active power actual value, a team turbine regulating door is opened for regulation; when the active power set value is less than the preset threshold value of the active power actual value, the team turbine regulating door is closed for regulation. By means of the technical scheme, the active power set value of the steam turbine is compared with the active power actual value which reflects the real-time operation state of the steam turbine, the power of the steam turbine is regulated through difference value changes, as a result, the contradiction between speed regulation, inertia regulation and delay regulation can be eliminated to the maximum, and the power of the steam turbine can be regulated quickly and stably. The mode that regulation is triggered when the difference value of the active power set value and the active power actual value exceeds the preset threshold value is adopted, and therefore influence of power fluctuation on regulation can be eliminated in a settable mode.

Description

technical field [0001] The invention relates to the field of control, in particular to a PID-free steam turbine power regulation method and equipment. Background technique [0002] Thermal power plants generate electricity through boilers and turbogenerators. Boiler and steam turbine generating unit units should be able to quickly respond to load changes and participate in power grid frequency regulation. At the same time, they should be able to overcome disturbances from various aspects to ensure safe, stable and economical operation of the units. high demands. Coordinated control system for thermal power plants came into being. [0003] In order to meet the quality requirements of the power grid for automatic generation control (AGC) and primary frequency regulation of units, the coordinated control system generally adopts a coordinated control method based on "furnace and machine". In this control mode, the boiler regulator automatically adjusts the main steam pressure...

AI Technical Summary

Problems solved by technology

Although the PID control technology is mature, the parameters of the PID regulator must be tuned first in actual use

It takes a lot of time and labor costs to set the parameters of the PID regulator, and if the parameters are not set properly, the system will face the risk of oscillation or even divergence, which seriously threatens the safety of the generator set

[0005] For the above problems, there is no good solution in the prior art

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