Circulating cooling water solar energy saving and controlling device for coal-based power plant

Abstract

The invention discloses a circulating cooling water solar energy saving and controlling device for a coal-based power plant. In the invention, a solar-powered water distribution pump set and an energy-saving control device of the solar-powered water distribution pump set are arranged on the conventional circulating cooling water system for regulating the temperature of the circulating cooling water and reducing the plant power consumption rate of the circulating water pump of a machine by fully utilizing the day and night and seasonal characteristics of solar, and thus, an obvious energy-saving effect is achieved.

Description

technical field [0001] The invention relates to a solar energy-saving and control device, in particular to an energy-saving and control device which utilizes solar energy to reduce the plant power consumption rate of a thermal power plant circulating cooling water system and realize the temperature optimization of circulating water. Background technique [0002] In my country's primary energy structure, coal and other fossil fuels account for more than 70%. Therefore, thermal power plants also account for more than 60% of domestic power generation installed capacity. According to statistics, more than 40% of the world's electricity comes from fossil fuels such as coal. Although the proportion of various renewable energy sources such as wind energy and solar energy is gradually increasing, thermal power plants will still be an important part of the global power industry for a long period of time in the future. [0003] As the governments and the public of various countries p...

AI Technical Summary

Problems solved by technology

The current solutions generally include changing the number of circulating water pumps in operation according to the ambient temperature and unit load or adding frequency conversion devices for circulating water pumps to achieve energy saving in the circulating water system. However, the adjustable means and precision of these methods are limited, and the operating effect is not good. Ideal

[0007] In the current large-scale utilization of renewable energy such as solar energy and wind energy, one of the biggest problems is its uncertainty with the environment, climate and time. The unstable power generation brought by these renewable energy sources directly connected to the grid It will have a huge impact on the operation and security of the entire power grid, and it is necessary to adapt to the direct grid connection and dispatching of these new energy generating units through costly smart grid transformation and upgrading

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