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A plant-level AGC system allocation strategy optimization method for improving unit stability

A technology of allocation strategy and optimization method, which is applied in the direction of AC network circuit, single network parallel feeding arrangement, circuit device, etc., can solve the problem of reducing the time period of stable operation and economical operation of the unit, increasing the number of times of alternating stress of the unit, and Unfavorable operation and other problems to achieve the effect of improving stability and economy, reducing the number of adjustments, and avoiding instability

Active Publication Date: 2021-02-05
LEADZONE SMART GRID TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Frequent changes in the target load of each unit increase the number of alternating stresses of the unit and reduce the time period for stable and economical operation of the unit, thus adversely affecting the operation of the unit

Method used

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  • A plant-level AGC system allocation strategy optimization method for improving unit stability

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Experimental program
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Embodiment 1

[0021]Referencefigure 1The method for optimizing plant-level AGC system allocation strategy for improving unit stability proposed by the present invention includes the following steps.

[0022]Calculate the theoretical target load: receive the plant-wide total load command issued by the dispatching master station, and calculate the theoretical target load of each unit according to the power supply coal consumption characteristic curve of each unit and the criterion of equal slight increase rate.

[0023]Analyze the total load increment: calculate the total load increment of the whole plant according to the total load command of the whole plant and the current total load of the whole plant. Specifically, the total load increment of the whole plant is the total load command of the whole plant and the current total load of the whole plant Determine whether the absolute value of the total load increment is less than the fine-tuning value of the load. If it is not less than, then directly send...

Embodiment 2

[0031]Referencefigure 1The method for optimizing plant-level AGC system allocation strategy for improving unit stability proposed by the present invention includes the following steps.

[0032]Calculate the theoretical target load: receive the plant-wide total load command issued by the dispatching master station, and calculate the theoretical target load of each unit according to the power supply coal consumption characteristic curve of each unit and the criterion of equal slight increase rate.

[0033]Analyze the total load increment: calculate the total load increment of the whole plant according to the total load command of the whole plant and the current total load of the whole plant, and judge whether the total load increment is less than the preset load fine-tuning value. The target load is distributed to each unit.

[0034]In this embodiment, the total load increment of the whole plant is the difference between the total load command of the whole plant and the current total load of t...

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Abstract

The invention discloses a plant-level AGC system distribution strategy optimization method for improving unit stability, and introduces a concept of load fine-tuning in the plant-level AGC system distribution strategy, that is, when the total load command of the whole plant changes very little , according to a reasonable selection logic, the total load increment of the whole plant is borne by one of the units instead of shared by all units, which solves the problem of frequent changes in the target load of the units.

Description

Technical field[0001]The invention relates to the technical field of plant-level automatic power generation control (AGC) in thermal power plants, in particular to a plant-level AGC system allocation strategy optimization method for improving unit stability.Background technique[0002]After the plant-level automatic power generation control system of the thermal power plant receives the plant-level total load command from the dispatching master station, it uses a certain distribution strategy to decompose the total load command into the load command of each single unit, and then sends it to the DCS of the unit (Distributed Control System, distributed control system) system, control the unit to reach the target load.[0003]The existing load distribution strategy of the plant-level AGC (Automatic Generation Control) system of thermal power plants generally uses the power supply coal consumption characteristic curve of each unit and the criterion of equal slight increase rate to calculate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/46
CPCH02J3/46H02J2203/20
Inventor 王统义殷骏谢芝东柴东元计圣凯温全程琦
Owner LEADZONE SMART GRID TECH
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