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Method and assembly for improving the dynamic behavior of a coal-fired power plant for primary and/or secondary requirements of the power grid operator with respect to the current output into the grid

A technology for operators and power stations, applied in combustion methods, block/powder fuel preparation, burners for burning powder fuel, etc. It can solve the problem of delay time affecting the total equipment delay time, etc., and achieve the effect of accurate consideration.

Active Publication Date: 2012-03-21
GENERAL ELECTRIC TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The delay time of the coal mill corresponding to the raw coal preparation process (depending on the raw coal purity, humidity, hardness and mill load) can be long and thus adversely affects the delay time of the overall plant

Method used

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  • Method and assembly for improving the dynamic behavior of a coal-fired power plant for primary and/or secondary requirements of the power grid operator with respect to the current output into the grid
  • Method and assembly for improving the dynamic behavior of a coal-fired power plant for primary and/or secondary requirements of the power grid operator with respect to the current output into the grid
  • Method and assembly for improving the dynamic behavior of a coal-fired power plant for primary and/or secondary requirements of the power grid operator with respect to the current output into the grid

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Experimental program
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Embodiment Construction

[0025] In an electrical energy supply system (grid), the power generated must always be balanced with the power consumed. Changes in customer load or disturbances in power stations impair this balance and cause frequency deviations in the network to which the machines participating in the main regulation or main demand react. The main regulator, or its equivalent, guarantees, thanks to its regulating behavior, to re-establish the balance between the power produced and consumed within a few seconds. Here, the frequency remains within permissible limit values. In the grid, after the main regulation or main requirement corrects sudden changes in the consumed or generated power, there are quasi-steady-state deviations of the frequency Δf and of the delivered power ΔPi (reference target values) between the individual regulation areas. In this regard, secondary adjustments or secondary requirements come into play, the purpose of which is to bring the frequency back to its target va...

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Abstract

The invention relates to a method for improving the dynamic behavior of a coal-fired power plant for primary and / or secondary requirements of the power grid operator with respect to the current output into the grid, wherein the power plant has a nominal output (RC) and is operated by way of firing, wherein upon an increase in the primary and / or secondary requirements of the power grid operator with respect to the current output into the grid the coal dust volume that is supplied is raised with respect to the present actual output, and wherein upon a decrease in the primary and / or secondary requirements of the power grid operator with respect to the current output into the grid the coal dust volume that is supplied is lowered with respect to the present actual output and is stored, and to an assembly for carrying out the method.

Description

technical field [0001] The invention relates to a system for the grid operator in the A method and an assembly for improving the dynamic behavior of a coal-fired (Kohlegefeuert) power station (Kraftwerk) in the context of the proposed primary and / or secondary requirements. Background technique [0002] It is an important aim to keep the frequency of the alternating voltage in the grid constant. Deviations from the predetermined frequency can lead to failure of consumers connected to the network and the resulting harmful consequences. [0003] In particular when the power demand for a power station connected to the grid changes suddenly (for example because a power station is disconnected from the network due to an accident or a large consumer is connected or because the network configuration or network distribution changes), the predetermined network frequency occurs in particular. value deviation. In order to keep the network frequency constant at a predetermined value ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C6/02F23C6/04F23D1/00F23K1/00F23K3/02F23N1/00
CPCF23K2201/1006F23C6/02F23K3/02F23C6/047F23N1/00F23K2203/105F23K2203/103F23K1/00F23D1/00
Inventor H·布吕格曼O·德雷尼克M·黑姆H·米尔扎
Owner GENERAL ELECTRIC TECH GMBH