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Thermodynamic system and regulation and control method for rapid load responses of heat supply unit

A heating unit, load response technology, applied in heating systems, household heating, hot water central heating systems, etc., can solve the problems of poor stability and high maintenance costs, and achieve rapid load reduction capabilities, small impact, and increased The effect of power generation load

Pending Publication Date: 2019-12-24
SPIC POWER PLANT OPERATION TECH (BEIJING) CO LTD
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  • Application Information

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Problems solved by technology

[0007] A thermal system and control method for rapid load response of heating units proposed by the present invention can solve the technical problems of poor stability and high maintenance cost of existing thermal systems

Method used

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  • Thermodynamic system and regulation and control method for rapid load responses of heat supply unit
  • Thermodynamic system and regulation and control method for rapid load responses of heat supply unit
  • Thermodynamic system and regulation and control method for rapid load responses of heat supply unit

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Embodiment Construction

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments.

[0036] like figure 1 and figure 2 As shown, the thermal system and control method for the rapid load response of the heating unit described in this embodiment are based on the heating unit, and the heating unit includes boiler 1, high-pressure cylinder 2, medium-pressure cylinder 3, and low-pressure cylinder connected in sequence 4 and the generator 5, a medium-low pressure communication butterfly valve 8 is set between the medium-pressure cylinder 3 and the low-pressure cylinder 4, and is used to adjust the flow of steam entering the low-pressure...

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Abstract

The invention discloses a thermodynamic system and a regulation and control method for rapid load responses of a heat supply unit. The technical problems that an existing thermodynamic system is poorin stability and high in cost are solved. The system is based on the heat supply unit, and the heat supply unit comprises a boiler, a high-pressure cylinder, a medium-pressure cylinder, a low-pressurecylinder and a generator which are sequentially connected. A medium-low-pressure communication butterfly valve is arranged between the medium-pressure cylinder and the low-pressure cylinder and is used for regulating the flow of steam entering the low-pressure cylinder. A heat supply steam outlet is formed between the medium-pressure cylinder and the medium-low-pressure communication butterfly valve, and a steam extraction butterfly valve is arranged on a steam extraction pipeline and is used for adjusting and controlling the flow of steam entering a heat supply network heater. The system isused for rapidly responding to AGC load instructions and primary frequency modulation instructions through the heat supply unit. The steam extraction device and a heat supply network system are adjusted through the heat supply unit, the instantaneous heat supply steam flow of the heat supply unit is quickly changed, and the instantaneous thermoelectric ratio of the whole unit is adjusted, so thatthe quick responses to power generation loads of the unit are achieved.

Description

technical field [0001] The invention relates to the technical field of thermal power generation, in particular to a thermal system and control method for rapid load response of a heating unit. Background technique [0002] For large-scale thermal power generating units, the power generation goes through the load control center of the dispatching organization. Through the distribution of dispatching instructions, the thermal power plant responds to the power generation demand, that is, the AGC control system, adjusts and controls the actual power generation load of the thermal power generating unit, thereby To adapt to the load demand of power grid dispatching, the load response rate is generally required to be 1.5-2% / min to meet the power grid dispatching requirements. In addition, grid-connected thermal power units also need to have a frequency modulation function to ensure the stability of the grid frequency. [0003] At present, the load response rate of large thermal po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K7/22F01K7/24F01K7/38F01K17/02F01D19/00F04D27/00F24D3/02F24D19/10
CPCF01K7/22F01K7/24F01K7/38F01K7/345F01K17/02F24D3/02F01D19/00F04D27/004F24D19/1012F24D19/1015
Inventor 袁建丽菅志清吴水木包伟伟尤姗姗周乃康符佳张起
Owner SPIC POWER PLANT OPERATION TECH (BEIJING) CO LTD
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