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Control method of AGC facing control performance standard (CPS) and control system thereof

A technology for automatic power generation control and evaluation standards, applied in control systems, control generators, electrical components, etc., can solve problems such as the inability to completely get rid of the control strategy of the A standard, and the inability of the AGC control strategy to meet the control objectives of the CPS standard. Power grid frequency quality and safety, stability and anti-disturbance level, improving system frequency quality, and improving the effect of CPS indicators

Inactive Publication Date: 2012-06-13
STATE GRID LIAONING ELECTRIC POWER RES INST
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Problems solved by technology

[0006] Aiming at the problems in the above-mentioned prior art, the present invention provides a control method for automatic power generation control oriented to the CPS standard, which solves the problem that the AGC control strategy in the prior art cannot meet the control target requirements of the CPS standard and cannot completely get rid of the AGC The problem with standard control strategy deficiencies

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  • Control method of AGC facing control performance standard (CPS) and control system thereof
  • Control method of AGC facing control performance standard (CPS) and control system thereof
  • Control method of AGC facing control performance standard (CPS) and control system thereof

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Embodiment

[0035] The control method of the present invention includes the following steps.

[0036] Let the current moment be T 0 , predict time T P =30 points, the number of days for historical statistics is 3 days, and the forecast time and number of days for statistics can be adjusted as needed.

[0037] 3 days before calculation T 0 to T 0 +T P The total average value of all frequency deviations at the moment is used as the predicted value of frequency deviation at the current point, Δf P .

[0038] Calculate the CPS correction component of the AGC total power, and use the following formula to calculate the frequency deviation correction component.

[0039] P CPS = - G × sign(Δf P )

[0040] In the formula, sign( ) is a sign function, the positive value is 1, and the negative value is -1; G is a certain power correction amount, at this time, the frequency deviation correction component only changes with the change of the predicted frequency deviation sign, and the predict...

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Abstract

The invention relates to a control method of AGC facing a control performance standard (CPS) and a control system thereof. Through setting structures of a data acquisition and pretreatment portion, an AGC total power calculating portion, an AGC total power distribution portion, a parameter set interface, an AGC state monitoring portion and the like, based on a frequency difference expectation, AGC regulating variable can be determined and an integral control link is canceled so that AGC set adjustment times can be effectively reduced. Set wear can be greatly reduced and energy consumption can be effective reduced too. The method and the system are beneficial to realize energy saving and emission reduction for power grid.

Description

technical field [0001] The present invention relates to an electric power control system, in particular to a control method and control system for automatic power generation control oriented to a control performance evaluation standard (CPS-control performance standard). Background technique [0002] According to the principle of "unified dispatching and hierarchical management", the dispatching at all levels should strictly implement the plan of sending, sending and receiving power, and strictly control and assess the deviation between the power of the tie line and the system frequency. Grid companies, provincial companies, and power generation companies that are integrated into the power grid are obliged and responsible to participate in frequency regulation and peak regulation of the power grid, make full use of primary frequency regulation of units, automatic generation control (AGC) and ultra-short-term load forecasting technologies, and strictly implement power generati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P9/00
Inventor 李铁刘劲松马千冯松起陈晓东金晓明何晓洋赵鹏王刚郭春雨刘淼张艳军刘刚罗卫华丛培贤韦明赵景宏李卫东
Owner STATE GRID LIAONING ELECTRIC POWER RES INST
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