Heat storage system for expanding the range of unit peak-shaving output and evaluation method of peak-shaving effect
A heat storage system and heat storage technology are applied in the directions of separation methods, heat storage equipment, chemical instruments and methods to achieve the effect of improving the adaptability of peak regulation.
Active Publication Date: 2022-04-15
STATE GRID HEBEI ELECTRIC POWER RES INST +1
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Problems solved by technology
[0004] In view of this, the embodiment of the present invention provides a heat storage system and a peak shaving effect evaluation method for expanding the range of unit peak shaving output to solve how to apply water heat storage technology in the steam turbine steam-water circuit system to expand the peak shaving output of the generating set range problem
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[0057] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
[0058] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.
[0059] figure 1 A schematic diagram of a heat storage system for extending the peak-shaving output range of a unit provided by an embodiment of the present invention is described in detail as follows.
[0060] The heat storage system that expands the peak-shaving outp...
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The present invention is applicable to the technical field of power generation, and provides a heat storage system for expanding the peak-shaving output range of units and a peak-shaving effect evaluation method. The method includes a heat storage heater, a heat storage pump, a heat release pump, and a heat storage tank group The formed heat storage system obtains the first reference operating parameter of the heat storage system in the heat storage operation mode and the second reference operation parameter in the heat release operation mode; calculates the unit in the heat storage operation mode according to the first reference operation parameter The reduction of the lowest peak-shaving output; the increase of the maximum peak-shaving output of the unit in the heat release operation mode is calculated according to the second reference operating parameter, thereby providing a feasible and reliable method for expanding the peak-shaving output operating range of the existing unit The selection scheme has little impact on the economics of unit operation, and can also provide important reference data for the power grid dispatching department to determine the peak-shaving operation mode of existing units after adopting such a peak-shaving transformation plan, and improve the efficiency of the existing technology-retrofitted units on the power grid. peak shaving adaptability.
Description
technical field [0001] The invention belongs to the technical field of power generation, and in particular relates to a heat storage system for expanding the peak-shaving output range of a unit and a peak-shaving effect evaluation method. Background technique [0002] New energy units put forward higher and higher requirements for the operating flexibility and deep peak regulation of operating units in the power grid. Through flexible transformation, the thermal power unit increases the peak-shaving capacity of 20% of the rated capacity, and the minimum technical output reaches 40%-50% of the rated capacity; the pure condensing unit increases the peak-shaving capacity of 15%-20% of the rated capacity, and the minimum technical output reaches 30 %-35% of the rated capacity, and some power plants even have a minimum technical output of 20%-25% of the rated capacity under pure condensing conditions when the unit is not fueled for stable combustion. [0003] Using water heat st...
Claims
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IPC IPC(8): F22D1/50F28D20/00G06Q10/06
CPCF22D1/50F28D20/00G06Q10/0639F28D2020/0082Y02E60/14
Inventor 杨海生王文营李浩高翔
Owner STATE GRID HEBEI ELECTRIC POWER RES INST