CN106020325A - Energy conservation and emission reduction method based on opening and heat consumption rate curve of regulating valve - Google Patents
Energy conservation and emission reduction method based on opening and heat consumption rate curve of regulating valve Download PDFInfo
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- CN106020325A CN106020325A CN201610470796.6A CN201610470796A CN106020325A CN 106020325 A CN106020325 A CN 106020325A CN 201610470796 A CN201610470796 A CN 201610470796A CN 106020325 A CN106020325 A CN 106020325A
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- heat consumption
- consumption rate
- valve opening
- control valve
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
Abstract
The invention provides an energy conservation and emission reduction method based on an opening and heat consumption rate curve of a regulating valve so as to reduce heat consumption of a generator unit and achieve the purposes of energy conservation, consumption reduction and emission reduction. A relation curve of the opening of the regulating valve and power of a generator end is drawn; the relation curve of the heat consumption rate and the power of the generator end is drawn; a relation curve of the opening of the regulating valve and the heat consumption rate is drawn; the relation formula y=f(x) of the opening of the regulating valve and the heat consumption rate is established; a first-order derivative y'=f'(x) is calculated for the relation formula of the opening of the regulating valve and the heat consumption rate, and the derivative y' is an influence coefficient of a steam distribution mechanism of the unit on heat consumption; through big data analysis of tests on a large quantity of units, an expression of influence coefficients of steam distribution mechanisms of various units on the heat consumption is obtained, the minimum value of various influence coefficients in the opening value set of the same regulating valve is obtained through comparison, and the influence coefficient which the minimum value belongs to is a target result.
Description
Technical field
The present invention relates to a kind of energy-saving and emission-reduction method based on control valve opening heat consumption rate curve.
Background technology
At present, along with saving energy and reduce the cost the carrying out in a deep going way of work in power plant, the power saving of generating set is increasingly subject to pay attention to, generating set is carried out reducing energy consumption imperative.
13 overall plannings require: adhere to optimizing the structure of production, Promote Technology, strengthen engineering measure, and guiding of strengthening management combines, and increases substantially efficiency of energy utilization, substantially reduces pollutant emission；Improve further government take as the leading factor, enterprises as principal components, market effective drives, the propulsion energy-saving emission reduction work general layout that jointly participates in of the whole society.
Generating set typically uses the rotating speed of institution of distributing gas's regulation steam turbine, as shown in the Chinese patent of Application No. 201410404241.2.But because its institution of distributing gas's overall efficiency is relatively low, during speed governing, adds additional energy consumption.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency present in prior art, and the energy-saving and emission-reduction method based on control valve opening heat consumption rate curve of a kind of reasonable in design is provided, reduce the heat consumption of generating set, reach the purpose of saving energy, lowering energy consumption and reducing pollutants discharge.
The present invention solves the problems referred to above and be the technical scheme is that a kind of energy-saving and emission-reduction method based on control valve opening heat consumption rate curve, it is characterised in that: comprise the steps:
Step 1, under the stable each load condition of generating set, record each load condition control valve opening and the generator end Power operation data of this generating set, draw control valve opening and generator end power relation curve；
Step 2, under the stable each load condition of generating set, record each load condition heat consumption rate and the generator end Power operation data of this generating set, draw heat consumption rate and generator end power relation curve；
Step 3, the curve drawn according to step 1 and step, draw control valve opening and heat consumption rate relation curve；
Step 4, setting up control valve opening and heat consumption rate relation formula y=f (x) according to control valve opening and heat consumption rate relation curve, y represents heat consumption rate, and x represents control valve opening；Control valve opening and heat consumption rate relation formula are sought first derivative y'=f'(x), this derivative y' is that this unit institution of distributing gas affects coefficient to heat consumption；
Step 5, by a large amount of units this test big data analysis, draw the various unit institution of distributing gas expression formula affecting coefficient on heat consumption, comparing the various minimums affecting coefficient in same adjustment valve opening value set, the coefficient that affects belonging to this minimum is objective result.
In step 1 of the present invention, utilize curve fitting formula that each load condition control valve opening of generating set is fitted with generator end Power operation data, then draw control valve opening and generator end power relation curve.
In step 2 of the present invention, utilize curve fitting formula that each load condition heat consumption rate of generating set is fitted with generator end Power operation data, then draw heat consumption rate and generator end power relation curve.
In step 4 of the present invention, control valve opening with heat consumption rate relation formula is:
y=-47.437x5+544.08x4-2458.1x3+5624.1x2-6914.9x+11657。
Derivative y '=-237.185x of the present invention4+2176.32x3-7374.3x2+11248.2x-6914.9。
The present invention compared with prior art, has the following advantages and effect: unit heat consumption can be made effectively to reduce, and reaches the purpose of saving energy, lowering energy consumption and reducing pollutants discharge, and method simple practical, and implementation process does not affect unit safety stability.
Accompanying drawing explanation
Fig. 1 is the control valve opening that measures of certain generating set of the embodiment of the present invention and generator end power relation curve synoptic diagram.
Fig. 2 is the heat consumption rate that measures of certain generating set of the embodiment of the present invention and generator end power relation curve synoptic diagram.
Fig. 3 is certain generating set control valve opening and the heat consumption rate relation curve schematic diagram of the transposition drafting of the embodiment of the present invention.
Fig. 4 is that the various institution of distributing gas of the embodiment of the present invention affect coefficient curve schematic diagram to heat consumption.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following example are explanation of the invention and the invention is not limited in following example.
The embodiment of the present invention comprises the steps:
Step 1, under the stable each load condition of generating set, record each load condition control valve opening and the generator end Power operation data of this generating set, utilize curve fitting formula that this service data is fitted, drawing control valve opening and generator end power relation curve, this curve is shown in Fig. 1.
Step 2, under the stable each load condition of generating set, record each load condition heat consumption rate and the generator end Power operation data of this generating set, utilizing curve fitting formula to be fitted this service data, draw heat consumption rate and generator end power relation curve, this curve is shown in Fig. 2.
Step 3, the fitting formula set up according to step 1 and step 2, draw control valve opening and heat consumption rate relation curve, and curve is shown in Fig. 3.
Step 4, set up control valve opening and heat consumption rate relation formula y=f (x) according to control valve opening and heat consumption rate relation curve；In the present embodiment, this formula is:
y=-47.437x5+544.08x4-2458.1x3+5624.1x2-6914.9x+11657；
Y represents heat consumption rate, and x represents control valve opening；
Set R2=regression sum of square/total sum of squares=0.9999.
R square value is the index of Trendline fitting degree, and its numerical values recited can reflect the fitting degree between the estimated value of Trendline and corresponding real data, and fitting degree is the highest, and the reliability of Trendline is the highest.
R square value is span numerical value between 0～1, when the R square value of Trendline is equal to 1 or during close to 1, and its reliability is the highest, otherwise then reliability is relatively low.R square value is also referred to as the coefficient of determination.
Control valve opening and heat consumption rate relation formula are sought first derivative y'=f'(x), this derivative y' is that this unit institution of distributing gas affects coefficient to heat consumption.
In the present embodiment, y '=-237.185x4+2176.32x3-7374.3x2+11248.2x-6914.9。
In the present embodiment, setting up formula y=f (x) by program, such as Excel is the most permissible, point several equations, and the curve of the formula of the technical program matching is completely superposed with drawing curve.
Step 5, by a large amount of units this test big data analysis, show that the various unit institution of distributing gas affects the expression formula of coefficient to heat consumption, various coefficient expressions are drawn on same chart, as shown in Figure 4, the various minimums affecting coefficient are compared in identical x value set, the coefficient that affects belonging to this minimum is objective result, in Fig. 4 curve bottom to affect coefficient less.Can conclude that the novel institution of distributing gas of design affects the institution of distributing gas that coefficient is less to heat consumption, reduce the heat consumption of generating set, reach the purpose of saving energy, lowering energy consumption and reducing pollutants discharge.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components, be named title etc. can be different, and the above content described in this specification is only to present configuration example explanation.
Claims (5)
1. an energy-saving and emission-reduction method based on control valve opening heat consumption rate curve, it is characterised in that: comprise the steps:
Step 1, under the stable each load condition of generating set, record each load condition control valve opening and the generator end Power operation data of this generating set, draw control valve opening and generator end power relation curve；
Step 2, under the stable each load condition of generating set, record each load condition heat consumption rate and the generator end Power operation data of this generating set, draw heat consumption rate and generator end power relation curve；
Step 3, the curve drawn according to step 1 and step, draw control valve opening and heat consumption rate relation curve；
Step 4, setting up control valve opening and heat consumption rate relation formula y=f (x) according to control valve opening and heat consumption rate relation curve, y represents heat consumption rate, and x represents control valve opening；Control valve opening and heat consumption rate relation formula are sought first derivative y'=f'(x), this derivative y' is that this unit institution of distributing gas affects coefficient to heat consumption；
Step 5, by a large amount of units this test big data analysis, draw the various unit institution of distributing gas expression formula affecting coefficient on heat consumption, comparing the various minimums affecting coefficient in same adjustment valve opening value set, the coefficient that affects belonging to this minimum is objective result.
Energy-saving and emission-reduction method based on control valve opening heat consumption rate curve the most according to claim 1, it is characterized in that: in step 1, utilize curve fitting formula that each load condition control valve opening of generating set is fitted with generator end Power operation data, then draw control valve opening and generator end power relation curve.
Energy-saving and emission-reduction method based on control valve opening heat consumption rate curve the most according to claim 1, it is characterized in that: in step 2, utilize curve fitting formula that each load condition heat consumption rate of generating set is fitted with generator end Power operation data, then draw heat consumption rate and generator end power relation curve.
Energy-saving and emission-reduction method based on control valve opening heat consumption rate curve the most according to claim 1, it is characterised in that:
In step 4, control valve opening with heat consumption rate relation formula is:
y=-47.437x5+544.08x4-2458.1x3+5624.1x2-6914.9x+11657。
Energy-saving and emission-reduction method based on control valve opening heat consumption rate curve the most according to claim 4, it is characterised in that: described derivative y '=-237.185x4+2176.32x3-7374.3x2+11248.2x-6914.9。
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Citations (7)
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| JPH06272936A (en) * | 1993-03-16 | 1994-09-27 | Noritz Corp | Control method of air conditioning apparatus |
| EP1167698A2 (en) * | 2000-06-21 | 2002-01-02 | Mitsubishi Heavy Industries, Ltd. | Integrated operation instructing system for operating power generation plants |
| US20080288198A1 (en) * | 2005-06-06 | 2008-11-20 | Emerson Process Management Power & Water Solutions, Inc. | Method and Apparatus for Generalized Performance Evaluation of Equipment Using Achievable Performance Derived from Statistics and Real-Time Data |
| CN201705397U (en) * | 2010-03-27 | 2011-01-12 | 苏州华瑞能泰发电技术有限公司 | Steam turbine on-line heat rate monitoring device for thermal power plants |
| CN102722164A (en) * | 2012-04-01 | 2012-10-10 | 浙江亿扬能源科技有限公司 | Distributed control system for coal mine ventilation air oxidation generator set |
| CN103530504A (en) * | 2013-09-27 | 2014-01-22 | 广东电网公司电力科学研究院 | System and method for calculating feasible operation range of BHKW under condition of ordering power by heat |
| CN103850726A (en) * | 2014-03-28 | 2014-06-11 | 苏州华瑞能泰发电技术有限公司 | Method for quickly determining stationary sliding pressing optimization curve of steam turbine |
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2016
- 2016-06-24 CN CN201610470796.6A patent/CN106020325B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06272936A (en) * | 1993-03-16 | 1994-09-27 | Noritz Corp | Control method of air conditioning apparatus |
| EP1167698A2 (en) * | 2000-06-21 | 2002-01-02 | Mitsubishi Heavy Industries, Ltd. | Integrated operation instructing system for operating power generation plants |
| US20080288198A1 (en) * | 2005-06-06 | 2008-11-20 | Emerson Process Management Power & Water Solutions, Inc. | Method and Apparatus for Generalized Performance Evaluation of Equipment Using Achievable Performance Derived from Statistics and Real-Time Data |
| CN201705397U (en) * | 2010-03-27 | 2011-01-12 | 苏州华瑞能泰发电技术有限公司 | Steam turbine on-line heat rate monitoring device for thermal power plants |
| CN102722164A (en) * | 2012-04-01 | 2012-10-10 | 浙江亿扬能源科技有限公司 | Distributed control system for coal mine ventilation air oxidation generator set |
| CN103530504A (en) * | 2013-09-27 | 2014-01-22 | 广东电网公司电力科学研究院 | System and method for calculating feasible operation range of BHKW under condition of ordering power by heat |
| CN103850726A (en) * | 2014-03-28 | 2014-06-11 | 苏州华瑞能泰发电技术有限公司 | Method for quickly determining stationary sliding pressing optimization curve of steam turbine |
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