High-back-pressure heat supply system energy-saving optimization method

Abstract

The invention relates to a high-back-pressure heat supply system energy-saving optimization method. A heat supply system comprises a high-back-pressure heat supply unit, a No.1 steam extraction and heat supply unit, a No.2 steam extraction and heat supply unit, a heat supply network first-station heat exchanger, an industrial heat supply user side and a resident heat supply user side; the high-back-pressure heat supply unit, the No.1 steam extraction and heat supply unit and the No.2 steam extraction and heat supply unit are cogeneration units; electricity generating and heat supplying are simultaneously carried out according to an electrical load demand of a power grid and a heat load demand of a heat supply network; the heat supply network first-station heat exchanger is a steam-water heat exchanger; a steam side is connected with steam extraction and heat supply pipelines of the No.1 steam extraction and heat supply unit and the No.2 steam extraction and heat supply unit; a water side is connected with circulating water of the high-back-pressure heat supply unit; the industrial heat supply user side requires high-temperature steam and is heated by the No.1 steam extraction and heat supply unit and the No.2 steam extraction and heat supply unit; and the resident heat supply user side requires high-temperature hot water and is heated by the high-back-pressure heat supply unit,the No.1 steam extraction and heat supply unit and the No.2 steam extraction and heat supply unit through the heat supply network first-station heat exchanger so as to supply heat.

Description

technical field [0001] The invention relates to the technical field of cogeneration of heat and power, in particular to an energy-saving optimization method for a high back pressure heating system. Background technique [0002] The high back pressure series extraction steam heating system is a heating system commonly used by cogeneration units in North China in recent years. It can not only make full use of the advantage of zero cold source loss of high back pressure heating units, but also According to the user's heat load demand, the external heat supply is adjusted by controlling the steam extraction volume of the steam extraction heating unit. This heating system can give full play to the advantages of high back pressure heating units and extraction steam heating units, and flexibly meet the needs of heating users, such as the Chinese patent application number 201810984137.3, but the high back pressure heating units are more When different types of heating units are con...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies existing in the current high back pressure series steam extraction heating system, and provide a high back pressure heating system energy-saving optimization method to solve the problem of heating units when the electric load of the power grid and the load of the heating network change. The problem of high energy consumption of combined heat and power units

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