Method for adjusting AGC of water turbine generator set through variable-parameter approach

A hydroelectric unit and variable parameter technology, applied in the direction of controlling generators, electrical components, control systems, etc., can solve problems such as overshoot and undershoot, and achieve the effect of high adjustment precision and accuracy

Active Publication Date: 2018-01-16
西安五常电力技术有限公司
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Problems solved by technology

[0008] In order to solve the problems in the background technology, this invention proposes a method of adjusting the AGC of the hydroelectric unit by changing the parameters. This method solves the problem of overshoot and undershoot in some working conditions during AGC adjustment, thus adapting to different conditions. Load segments and different compliance adjustments

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  • Method for adjusting AGC of water turbine generator set through variable-parameter approach
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  • Method for adjusting AGC of water turbine generator set through variable-parameter approach

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Embodiment Construction

[0037] Step 1) Measure the guide vane opening and power curve of each generator set, and divide the unit load range into N load segments according to the linear relationship of the guide vane opening and power relationship curve and the target load of the historical AGC command load; (In this implementation, it is divided into 4 sections), such as Figure 4 shown.

[0038] Step 2) Carry out a large load disturbance test and a small load disturbance test respectively for 4 different load segments, and determine the target load of the large load disturbance test and the target load of the small load disturbance test;

[0039] Step 2.1) determine the target load of the large load disturbance test;

[0040] According to the target load of the historical AGC load command, the historical AGC load command curve is drawn in a period of 6 months; a historical AGC load command range probability event within 6 months is counted; the historical AGC load command range probability event is...

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Abstract

The invention relates to a method for adjusting the AGC (Automatic Generation Control) of a water turbine generator set, which includes the following steps: (1) dividing the load of a generator set into load segments; (2) carrying out large load disturbance test and small load disturbance test on N different load segments, and determining the target load of large load disturbance test and the target load of small load disturbance test; (3) determining the power adjustment quantity corresponding to the N different load segments in the processes of large load disturbance test and small load disturbance test; (4) establishing a generator set AGC parameter adjustment table; and (5) importing the AGC parameter adjustment table to the AGC to adjust the parameters of the generator set. The problem of overshoot and undershoot during AGC adjustment under part of working conditions is solved. Thus, the method adapts to different load segments and different eligible adjustment quantity.

Description

Technical field: [0001] The invention belongs to the field of hydroelectric generating sets, and in particular relates to an AGC adjustment method of a hydroelectric generating set. Background technique [0002] With the improvement of scheduling and automation level of power plants, the automatic generation control system (AGC) of hydropower units has been widely used in large and medium-sized hydropower stations. The AGC of hydropower plants is generally determined based on the principle of economic operation under the condition of operating constraints under the load instructions issued by the dispatcher. The number of operating units and the load distribution among units. [0003] figure 1 It is a schematic diagram of the AGC control structure of the hydroelectric unit, and its specific working principle is as follows: [0004] The dispatcher sends the load command of the power plant or a single unit to the AGC of the power plant, and the AGC of the power plant sends t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/48H02J3/38H02P9/04H02P101/10
Inventor 李军李勋城
Owner 西安五常电力技术有限公司
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