Excitation control system applicable to steam turbine generator unit of self-generation power plant

Abstract

The invention discloses an excitation control system applicable to a steam turbine generator unit of a self-generation power plant. The excitation control system comprises a signal collection unit used for obtaining an external power power-supplying fluctuation signal between the self-generation power plant and an external power grid and / or an internal grid power-supplying fluctuation signal of asteam turbine generator, a signal processing unit used for obtaining a current external power power-supplying fluctuation parameter and / or an internal grid generator power-supplying fluctuation parameter, a load control unit used for controlling the operating state of a power load, an output control unit used for regulating the output power of a backup steam turbine generator, and a call wire power factor control unit used for realizing real-time control of a call wire power factor. The invention also discloses an excitation control method applicable to the steam turbine generator unit of theself-generation power plant. By virtue of the technical scheme, fluctuation of output power of the internal power grid of a sugar refinery in isolated grid or grid-connected operation can be lowered,so that switching of two kinds of operating modes of steam constant current and constant power grid connection is realized, and operation of the sugar refinery can be more energy-saving and economical.

Description

technical field [0001] The invention belongs to the technical field of biomass combined heat and power generation and energy saving and consumption reduction, and specifically relates to an excitation control system suitable for a steam turbine generator set in a self-provided power plant. Background technique [0002] Since the state encourages the incremental power distribution of renewable energy consumption nearby to achieve the purpose of energy saving and environmental protection, self-provided power plants gradually have a place in the national grid structure. On the one hand, the self-provided power plant can solve the problem of the enterprise's own power distribution. When there is a surplus in production capacity, it can also provide functions to the external power grid, which improves energy utilization efficiency and increases the income of the enterprise; on the other hand, the self-provided power plant can alleviate the external The power supply pressure of th...

AI Technical Summary

Problems solved by technology

The method of the technical solution of the present invention aims at the situation that the output power fluctuates greatly during the grid-connected operation of the self-provided power plant, and the quantitative power generation cannot be generated according to the demand during the isolated grid operation, by controlling the start and / or stop of the power load in the plant, The output power of the self-provided power plant is monitored and adjusted to realize stable output when the self-provided power plant is connected to the grid and on-demand power generation during isolated grid operation

Images