Method for optimizing plant-level AGC system allocation strategy to improve unit stability

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

Active Publication Date: 2018-03-23
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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  • Method for optimizing plant-level AGC system allocation strategy to improve unit stability

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Effect test

Embodiment 1

[0021] refer to figure 1 A plant-level AGC system allocation strategy optimization method for improving unit stability proposed by the present invention includes the following steps.

[0022] Calculation of theoretical target load: Receive the total plant 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 rule of equal micro-increase rate.

[0023] Analysis of total load increment: Calculate the total load increment of the entire plant based on the total load command of the entire plant and the current total load of the entire plant. Specifically, the total load increment of the entire plant is the total load command of the entire plant and the current total load of the entire plant The difference; determine whether the absolute value of the total load increment is less than the load fine-tuning value, if not, then directly send th...

Embodiment 2

[0031] refer to figure 1 A plant-level AGC system allocation strategy optimization method for improving unit stability proposed by the present invention includes the following steps.

[0032] Calculation of theoretical target load: Receive the total plant 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 rule of equal micro-increase rate.

[0033] Analysis of total load increment: Calculate the total load increment of the entire plant according to the total load command of the entire plant and the current total load of the entire plant, and judge whether the total load increment is less than the preset load fine-tuning value. The target load is sent 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 o...

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Abstract

The invention discloses a method for optimizing a plant-level AGC system allocation strategy to improve unit stability. A concept of load fine tuning is introduced into the allocation strategy of theplant-level AGC system, that is when the total load instruction of the whole plant changes very little, the total load increment of the whole plant is applied to one of the units instead of all the units according to a reasonable selection logic, thereby solving the frequent changes of target load of the units.

Description

technical field [0001] The invention relates to the technical field of plant-level automatic generation control (AGC) of thermal power plants, in particular to a plant-level AGC system allocation strategy optimization method for improving unit stability. Background technique [0002] After receiving the plant-level total load command from the dispatching master station, the plant-level automatic power generation control system of the thermal power plant uses a certain distribution strategy to decompose the total load command into the load commands 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 load distribution strategy of the existing plant-level AGC (Automatic Generation Control, automatic generation control) system of thermal power plants generally uses the power supply coal consumption characteristic curve of each unit and the equal micr...

Claims

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Application Information

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Patent Type & Authority Applications(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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