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On-line Evaluation Method and Device for Primary Frequency Regulation Capability of Steam Turbine

An evaluation device and steam turbine technology, applied in the direction of instruments, calculations, electrical digital data processing, etc., can solve the problems of poor safety in power grid operation, achieve the effects of improving safety, increasing the opening of regulating valves, and improving operating economy

Active Publication Date: 2018-10-23
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1
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Problems solved by technology

[0005] In view of this, the first object of the present invention is to provide an online evaluation method for the primary frequency regulation capability of a steam turbine, which can effectively solve the problem of poor grid operation security caused by the primary frequency regulation capability deviating from the design value. The second purpose is to provide an online evaluation device for the primary frequency regulation capability of steam turbines

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  • On-line Evaluation Method and Device for Primary Frequency Regulation Capability of Steam Turbine
  • On-line Evaluation Method and Device for Primary Frequency Regulation Capability of Steam Turbine
  • On-line Evaluation Method and Device for Primary Frequency Regulation Capability of Steam Turbine

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Embodiment Construction

[0048] The embodiment of the invention discloses an online evaluation method for the primary frequency regulation capability of a steam turbine, so as to evaluate the primary frequency regulation capability of the steam turbine in normal operation in real time and improve the safety of power grid operation.

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0050] see figure 1 , figure 1 It is a schematic flowchart of a specific implementation of the online evaluation method for the primary frequency regula...

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Abstract

The invention discloses an online evaluating method for the primary frequency modulation capacity of a turbine.The method includes the steps of obtaining the current main steam pressure of a running unit of the turbine and the current opening degree of an adjusting valve in real time; calculating the primary frequency modulation capacity under the rated main steam pressure corresponding to the current opening degree of the adjusting valve according to the relation between the adjusting valve opening degree under the rated main steam pressure of the unit of the turbine and the corresponding primary frequency modulation capacity, wherein the primary frequency modulation capacity is the load increment corresponding to the full opening degree of the adjusting valve; modifying the primary frequency modulation capacity under the rated main steam pressure into the primary frequency modulation capacity corresponding to the current main steam pressure according to the relation between the main steam pressure and the primary frequency modulation capacity, and determining the current primary frequency modulation capacity.By means of the method, the running economy and safety of a power grid are improved.The invention further discloses an online evaluating device for the primary frequency modulation capacity of the turbine.

Description

technical field [0001] The invention relates to the technical field of steam turbine operation control, and more specifically, relates to an online evaluation method for the primary frequency regulation capability of a steam turbine, and also relates to an online evaluation device for the primary frequency regulation capability of a steam turbine. Background technique [0002] At present, large-capacity UHV transmission lines have been implemented one by one in my country, which has effectively promoted the national energy interconnection. However, if transmission failures such as DC transmission blockage occur, for power input provinces, the local power shortage will suddenly increase significantly. The frequency will drop off abruptly. At this time, if the primary frequency regulation function of the thermal power unit works as designed, it will reduce the frequency drop of the grid and reduce the impact of the accident. Therefore, it is very important to accurately grasp t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG16Z99/00
Inventor 张宝樊印龙吴文健顾正皓
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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