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Identical time scale-based AGC and AVC coordination control method

A coordinated control, same time technology, applied in the direction of AC network voltage adjustment, reactive power compensation, etc., can solve problems such as adverse system safety and robustness, repeated adjustment of control equipment, and control index decline.

Active Publication Date: 2016-02-24
STATE GRID CORP OF CHINA +3
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AI Technical Summary

Problems solved by technology

[0004] The existing grid automatic control method uses AGC and AVC as two completely independent closed-loop control systems for independent control, but the control commands of AGC and AVC will affect each other, which may lead to a decrease in control indicators and repeated adjustments. Consequences detrimental to system safety and robustness such as control equipment

Method used

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  • Identical time scale-based AGC and AVC coordination control method
  • Identical time scale-based AGC and AVC coordination control method
  • Identical time scale-based AGC and AVC coordination control method

Examples

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Embodiment 1

[0058] Such as Figure 1-4 Shown, the inventive method of this example comprises the following steps:

[0059] Step 1: According to the overall framework of the multi-time-scale multi-level AGC and AVC coordinated control model provided by the present invention, determine the applicable time scale for AGC and AVC coordinated control, and establish a multi-layered AGC and AVC coordinated control system.

[0060] The overall framework provided by the present invention includes two levels, such as figure 2 As shown, they are: at the minute level, realize the coordinated optimization control of AGC and AVC, and output active and reactive power reference power commands; at the second level, realize the coordinated correction control of AGC and AVC, and output active and reactive power adjustment commands.

[0061] According to the overall framework provided by the present invention, combined with the load level carried by the actual power grid, the adjustment capacity and respons...

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Abstract

The invention relates to an identical time scale-based AGC and AVC coordination control method. The method includes the following steps of: establishing a multi-layer AGC and AVC coordination control system; realizing economic operation of a power grid; and correcting and controlling active power and reactive power of the power grid in real time. According to the method in the invention, the problem that AGC and AVC independent control can mutually affect a control effect can be solved; an interaction mechanism between an AGC and an AVC can be researched; a time scale being suitable for the AGC and AVC coordination control can be analyzed; an AGC and AVC coordination control model which is based on the identical time scale and considers the interaction mechanism between the active power and the reactive power, is provided; the conventional control method is improved; the AGC and AVC coordination optimized control can be achieved; adjustable resources and the control freedom degree of the system can be fully utilized; and the safety, the economy and the power quality of power grid operation can be improved to the greatest extent.

Description

Technical field: [0001] The present invention relates, more specifically, to an AGC and AVC coordinated control method based on the same time scale. Background technique: [0002] In the intersection field of power grid operation control and nonlinear programming problems, automatic generation control (AGC) is responsible for the control of active power frequency. The rate adjusts the power generation output in real time to meet the real-time balance of power supply and demand, to achieve the purpose of maintaining the deviation between the system frequency and the rated value within the allowable range, and maintaining the deviation between the net exchange power of the external connection line and the planned value within the allowable range. AGC generally adopts tie-line net exchange power deviation and frequency deviation control (TBC). The advantage of this control method is that each control area balances its load fluctuations by itself according to the adjustment pow...

Claims

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Application Information

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IPC IPC(8): H02J3/16
CPCY02E40/30
Inventor 于汀蒲天骄赵聪田爱忠韩巍李时光
Owner STATE GRID CORP OF CHINA
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