Steam-extracting and heat-supplying power station system with complete thermoelectric decoupling and working method

Abstract

The invention discloses a steam-extracting and heat-supplying power station system with complete thermoelectric decoupling and a working method. The steam-extracting and heat-supplying power station system is a power station system with steam extraction and heat supply and with in-series connection of two-stage bypasses. The steam-extracting and heat-supplying power station system and the working method disclosed by the invention have the advantages that by modification of the heat-supplying power station system of the original middle reheating unit, not only can the heat-supplying safety of regions at the heat-supplying peak period in winter be guaranteed, but also greatest reduction of the power-generation load of a steam turbine is allowed, so that the wind-electricity receiving capability can be greatly improved and the purpose of complete thermoelectric decoupling can be achieved. The scheme disclosed by the invention has the advantages of convenience in implementation, obvious effect, low investment cost and the like.

Description

technical field [0001] The present invention relates to the field of decoupling the constraints of traditional thermal power plants to "determine electricity by heat", so that the power station can ensure the safety of heat supply and can also receive wind power in a large amount. . Background technique [0002] "Abandoning wind and light" has become more and more severe. In recent years, the average wind abandonment rate in the "Three North" region has approached 30%. In order to meet the development needs of grid-connected renewable energy power generation, the power grid requires power plants to increase their peak-shaving capacity during the heating season. Since the heat supply for residents is a major issue related to the people's livelihood, it must be guaranteed first. Therefore, under the traditional operation mode of heating power, the power generation load of the power plant cannot be reduced arbitrarily, otherwise it will cause insufficient heat supply. [0003...

AI Technical Summary

Problems solved by technology

Since the heat supply for residents is a major event related to the people's livelihood, it must be guaranteed first. Therefore, under the traditional operation mode of heating power, the power generation load of the power plant cannot be reduced at will, otherwise it will cause insufficient heat supply.

[0003] The heating units of conventional power plants, whether they are back pressure heating units or condensing heating units, are unable to adjust peaks due to heating requirements, resulting in excessive system forced output during low power consumption at night, which makes wind power connected to the grid not enough space

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