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Optimization method for AGC system of steam turbine

An optimization method and steam turbine technology, applied in geometric CAD, computer-aided design, special data processing applications, etc., can solve problems such as difficult to meet the adjustment speed and adjustment accuracy at the same time, achieve improved AGC adjustment speed, wide application range, and improve AGC Adjusting the Effects of Accuracy Issues

Active Publication Date: 2018-02-09
哈尔滨沃华智能电力技术有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that it is difficult to meet the two requirements of adjustment rate and adjustment accuracy at the same time through the AGC optimization method of the control system design and adjustment control parameters of the existing heating units, and proposes an optimization of the steam turbine AGC system method

Method used

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  • Optimization method for AGC system of steam turbine
  • Optimization method for AGC system of steam turbine
  • Optimization method for AGC system of steam turbine

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specific Embodiment approach 1

[0032] Specific implementation mode one: as figure 1 Shown, a kind of optimization method of steam turbine AGC system comprises the following steps:

[0033] Step 1: According to the actual variable load rate V of the unit 0 And the expected variable load rate V that meets the requirements of the AGC assessment 1 Get the optimized ratio K 1 ;

[0034] Step 2: According to the optimized ratio K obtained in Step 1 1 Get the slope K of the tuning characteristic curve:

[0035] K=1+K 1

[0036] Step 3: In order to increase the slope of the characteristic curve, change the slope of the valve flow characteristic curve, and change the value range of the valve flow characteristic curve X-axis (comprehensive flow command) from [0,100] to [0,X’], where:

[0037]

[0038] Step 4: Translate the valve flow characteristic curve as a whole, so that the value range of the X-axis of the valve flow characteristic curve is [0,100];

[0039] Step 5: Correct the X value corresponding to...

specific Embodiment approach 2

[0045] Specific embodiment two: the difference between this embodiment and specific embodiment one is that: in the step one, according to the actual variable load rate V of the unit 0 And the expected variable load rate V that meets the requirements of the AGC assessment 1 Get the optimal ratio K 1 Specifically:

[0046]

[0047] Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0048] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that in the step 4, the overall translation distance X of the valve flow characteristic curve is translated. L for:

[0049] x L = 100-X'.

[0050] Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to an optimization method for an AGC system of a steam turbine. The optimization method for improving AGC adjustment performance of the steam turbine solves the problem that it is difficult for existing methods to meet the two demands of adjusting a rate and precision. The method comprises the steps of 1, obtaining an optimization proportion K1 according to an actual variableload rate V0 of a unit and an expected variable load rate V1 for meeting AGC demands; 2, obtaining a valve characteristic curve slope rate K according to the optimization proportion K1 obtained in the step 1; 3, changing a value range of the X axis of a valve flow characteristic curve from [0,100] to [0,X']; 4, conducting the overall translation of the valve flow characteristic curve to make thevalue range of the X axis of the valve flow characteristic curve be [0,100]; 5, correcting X values corresponding to fitting point parameters of DEH function blocks of all valves, and ensuring that corresponding Y values keep unchanged. The optimization method is used in the field of adopting the valve characteristic curve optimization method to improve the AGC comprehensive adjustment performanceof a thermal power unit.

Description

technical field [0001] The invention relates to an optimization method for an AGC system of a steam turbine, in particular to an optimization method for improving the AGC adjustment performance of a heating unit by increasing the slope of the comprehensive flow characteristic of a high-adjustment door. Background technique [0002] At present, my country's requirements for environmental protection are increasing day by day, the power structure is constantly being adjusted, and the proportion of new energy in the energy supply structure is increasing year by year. However, due to the limitations of new energy sources and the high standard requirements of the State Grid for grid stability, thermal power units are more involved in grid peak regulation, especially in recent years, toward deep and fast regulation. develop. At the same time, with the rapid development of the electric power industry, the replacement of small-capacity units by large-capacity units is increasing, an...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F2119/08
Inventor 姚坤孙建国康剑南王凤良江飞张腾宇李越男刘东旭方国春马志国郭瑞君张怀文张剑峰吕登龙楚豫川曹勇
Owner 哈尔滨沃华智能电力技术有限公司
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