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Primary frequency modulation optimization control method and system

A technology that optimizes control and changes direction. It is applied to AC network circuits, electrical components, circuit devices, etc., and can solve problems such as poor accuracy, lag in primary frequency modulation performance adjustment, and insufficient output.

Active Publication Date: 2021-01-05
JIANGSU FRONTIER ELECTRIC TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the deficiencies in the prior art, the present invention provides a primary frequency modulation optimization control method and system, which improves the problems of primary frequency modulation performance adjustment lag, insufficient output and poor precision caused by the inconsistency between the AGC command and the primary frequency modulation command

Method used

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  • Primary frequency modulation optimization control method and system
  • Primary frequency modulation optimization control method and system
  • Primary frequency modulation optimization control method and system

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Embodiment 1

[0017] A primary frequency regulation optimization control method, comprising: when a unit receives an AGC command and a primary frequency regulation command at the same time, according to the current actual load of the unit, the AGC command, the change direction of the AGC command, and the change direction of the primary frequency regulation command, comprehensively select the AGC command Switching command AGCm; use the historical data of the actual load of the unit to predict the change of the actual load of the unit under the action of the switching command AGCm of the AGC command after the set period of time, and calculate the compensation for the unit’s primary frequency regulation to obtain the preset value of the unit’s primary frequency regulation load; In the compensation calculation of unit primary frequency regulation, the influence of pressure deviation on the unit is comprehensively considered to determine the primary frequency regulation load set value.

[0018] S...

Embodiment 2

[0035] Based on the primary frequency modulation optimization control method described in Embodiment 1, this embodiment provides a primary frequency modulation optimization control system, including:

[0036] The first module, that is, the intelligent cooperative switching selection module of AGC command and one-time frequency regulation command, is used when the unit receives AGC command and one-time frequency regulation command at the same time, according to the current actual load of the unit, AGC command, the direction of change of AGC command and one-time frequency regulation command direction of change, comprehensively select the switching command AGCm of the AGC command;

[0037] The second module, that is, the primary frequency modulation command compensation module with prediction function, is used to use the historical data of the actual load of the unit to predict the change of the actual load of the unit under the action of the switching command AGCm of the AGC comm...

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Abstract

The invention discloses a primary frequency modulation optimization control method and a primary frequency modulation optimization control system in the technical field of primary frequency modulation, and solves problems of lagged primary frequency modulation performance adjustment, insufficient output and poor precision caused by inconsistency of an AGC instruction and a primary frequency modulation instruction. The method comprises steps that a, when a unit receives an AGC instruction and a primary frequency modulation instruction at the same time, a switching instruction AGCm of the AGC instruction being comprehensively selected according to the current actual load of the unit, the AGC instruction, the change direction of the AGC instruction and the change direction of the primary frequency modulation instruction; b, predicting the change condition of the actual load of the unit under the action of a switching instruction AGCm of the AGC instruction after a set duration by utilizing the historical data of the actual load of the unit, and carrying out primary frequency modulation compensation calculation on the unit to obtain a primary frequency modulation load preset value of the unit; and c, in the primary frequency modulation compensation calculation of the unit, comprehensively considering the influence of pressure deviation on the unit, and determining a primary frequency modulation load set value.

Description

technical field [0001] The invention belongs to the technical field of primary frequency modulation, and in particular relates to a primary frequency modulation optimization control method and system. Background technique [0002] At present, the grid connection of new energy power generation is gradually increasing, and the proportion of new energy is steadily increasing. In order to improve the consumption of new energy power, the primary frequency regulation performance of thermal power units is particularly important. However, the primary frequency regulation performance of thermal power units in the process of primary frequency regulation It is not ideal, mainly manifested in problems such as insufficient frequency modulation output, poor frequency modulation accuracy, and lag in the adjustment process. Thermal power plants do not pay enough attention to the functions of load regulation and frequency regulation that thermal power units should play. In the future, the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/24H02J3/46
CPCH02J3/241H02J3/466H02J2203/10
Inventor 高爱民崔晓波于国强殳建军张天海张卫庆杨小龙肖新宇史毅越汤可怡李玮胡尊民刘娜娜
Owner JIANGSU FRONTIER ELECTRIC TECH
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