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Coal-electricity internal heat circulation system and method for improving wind power consumption level thereof

A circulation system and heat storage system technology, applied in the field of power dispatching, can solve the problems of less research on the flexibility of conventional coal-fired power units

Active Publication Date: 2021-04-13
SHANXI UNIV
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  • Description
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  • Application Information

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Problems solved by technology

However, at present, the main research in my country focuses on the thermoelectric decoupling of cogeneration units, and there are few studies on the flexibility transformation of conventional coal-fired power units.

Method used

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  • Coal-electricity internal heat circulation system and method for improving wind power consumption level thereof
  • Coal-electricity internal heat circulation system and method for improving wind power consumption level thereof
  • Coal-electricity internal heat circulation system and method for improving wind power consumption level thereof

Examples

Experimental program
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Embodiment Construction

[0066] like figure 1 As shown, a coal-fired internal thermal cycle system includes a steam power generation system, a boiler system, a high-pressure cylinder, a medium-pressure cylinder, a low-pressure cylinder, a cooling tower, and also includes a high-temperature heat storage system and a low-temperature heat storage system;

[0067] The first gas outlet of the boiler system is connected to the first port of the No. 1 tee 1, and the second port of the No. 1 tee 1 is connected to the heat medium inlet of the No. 1 heat exchanger 2 in the high-temperature heat storage system. The heat medium outlet of the No. 1 heat exchanger 2 is connected to the first port of the No. 5 tee 3, and the cold medium outlet of the No. 1 heat exchanger 2 is connected to the air inlet of the hot tank 4 in the high-temperature heat storage system, so The gas outlet of the hot tank 4 in the high-temperature heat storage system is connected through the heat medium inlet of the No. The air outlet of ...

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Abstract

The invention belongs to the field of power dispatching, and particularly relates to a coal-electricity internal heat circulation system and a method for improving the wind power consumption level thereof. The constraint relation of a coal-electricityunit boiler combustion system, a high-temperature and low-temperature heat storage system and a steam power generation system is considered, a mathematical model of a steam extraction and double-heat-storage system is established, and a maximum wind power consumption optimization scheduling system is constructed. Through example simulation, the economy and the wind curtailment rate before and after steam extraction and double-heat-storage transformation are analyzed, and the influence effects of different wind power installations and heat storage capacities are compared and analyzed.

Description

Technical field [0001] The invention belongs to the field of electric power dispatching, and specifically relates to an internal thermal circulation system of coal power and a method for improving the level of wind power consumption. Background technique [0002] In the future, my country will vigorously develop wind power and further increase the proportion of new energy installed capacity, but the problem of wind curtailment is also more prominent. According to the National Energy Administration’s reflection on key issues in the “14th Five-Year Plan” energy development plan, the peak-to-valley difference in my country’s electricity load continues to expand, and the problem of clean energy consumption during low load periods is prominent. During peak load periods, the pressure to ensure power supply increases. big. Insufficient peak-shaving capacity of the system is a major reason for power curtailment and wind curtailment. Looking at my country's Shanxi Province, the powe...

Claims

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Application Information

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IPC IPC(8): H02J3/46F28D20/00F01D15/10F01K11/02F01K17/06
CPCH02J3/46F01K11/02F01K17/06F01D15/10F28D20/00H02J2203/20Y02E70/30
Inventor 赵兴勇李京虎
Owner SHANXI UNIV
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