Double-unit coupling peak shaving method and device based on electricity and heat load cooperative scheduling of whole plant

A technology of coordinated scheduling and heat load, which is applied in steam engine installations, heating methods, household heating, etc., and can solve problems such as not considering the economics of peak shaving in the whole plant

Active Publication Date: 2019-12-13
HUADIAN ELECTRIC POWER SCI INST CO LTD +1
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Problems solved by technology

In addition, the patent application "A thermal load distribution method based on maximizing the peak-shaving capacity of the whole plant of a thermal power plant (application number 201810644679.6)" optimizes the t

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  • Double-unit coupling peak shaving method and device based on electricity and heat load cooperative scheduling of whole plant
  • Double-unit coupling peak shaving method and device based on electricity and heat load cooperative scheduling of whole plant
  • Double-unit coupling peak shaving method and device based on electricity and heat load cooperative scheduling of whole plant

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[0052] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0053] see figure 1 , the dual-unit coupling peak-shaving method based on the coordinated scheduling of power and thermal loads in the whole plant in this embodiment includes the following steps:

[0054] Step 1: According to the design parameters of the first thermoelectric unit and the second thermoelectric unit, the performance parameters of the unit and the historical operation data of the unit, draw the two thermoelectric units operating under the condensing mode and the low-pressure cylinder without steam to do work. In each mode, the relationship curve between the heating extraction flow of the unit and the output of the unit and the inlet steam flow of the unit;

[0055] Step 2: Record the operating paramet...

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Abstract

The invention discloses a double-unit coupling peak shaving method and device based on electricity and heat load cooperative scheduling of a whole plant, and belongs to the technical field of cogeneration and thermal power flexibility. The device includes a first thermoelectric unit, a second thermoelectric unit, a first cooling steam system and a second cooling steam system. According to the method and the device, peak-shaving operation strategies of the two units are generated on the premise of meeting an external heat supply load requirement, not only the civil heating requirement is met, but also economic benefits of the peak-shaving operation of the whole plant are maximized, the design of the device is reasonable, the structure is simple, and performance is reliable.

Description

technical field [0001] The invention belongs to the technical field of heat and power cogeneration and thermal power flexibility, and in particular relates to a dual-unit coupling peak-shaving method and device based on coordinated scheduling of electricity and heat loads in the whole plant. Background technique [0002] At present, my country's policies are gradually emphasizing the promotion of new energy sources and reducing the proportion of thermal power units. For thermal power plants, the waste heat of exhaust steam at the cold end of the steam turbine is directly discharged, which causes a huge loss at the cold end. For example, the waste heat loss at the cold end of a 300MW subcritical pure condensing unit can reach 45%, and 20% of the condensation waste heat of the unit is still discharged after steam extraction is used for heating. This part of the heat is difficult to use directly due to its low grade. At the same time, as the power grid accommodates new energy ...

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Application Information

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IPC IPC(8): F01K11/02F01D15/10F01K7/16F28B7/00F24D3/10F24D19/10
CPCF01D15/10F01K7/16F01K11/02F24D3/10F24D19/1015F28B7/00
Inventor 何晓红高新勇王永学汪晓龙阮宇雯
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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