CN106020325B - A kind of energy-saving and emission-reduction method based on control valve opening heat consumption rate curve - Google Patents
A kind of energy-saving and emission-reduction method based on control valve opening heat consumption rate curve Download PDFInfo
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- CN106020325B CN106020325B CN201610470796.6A CN201610470796A CN106020325B CN 106020325 B CN106020325 B CN 106020325B CN 201610470796 A CN201610470796 A CN 201610470796A CN 106020325 B CN106020325 B CN 106020325B
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- heat consumption
- valve opening
- control valve
- consumption rate
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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 present invention provides a kind of energy-saving and emission-reduction method based on control valve opening heat consumption rate curve, reduces the heat consumption of generating set, reaches the purpose of saving energy, lowering energy consumption and reducing pollutants discharge.Draw control valve opening and generator end power relation curve；Draw heat consumption rate and generator end power relation curve；Draw control valve opening and heat consumption rate relation curve；Establish control valve opening and heat consumption rate relation formula y=f (x)；First derivative y'=f'(x is asked to control valve opening and heat consumption rate relation formula), derivative y' is influence coefficient of the unit institution of distributing gas to heat consumption；Analyzed by the big data tested a large amount of this of unit, draw the expression formula of influence coefficient of the various unit institution of distributing gas to heat consumption, the more various minimums for influenceing coefficient in same adjustment valve opening value set, the influence coefficient belonging to the minimum is objective 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, to be carried out in a deep going way with the energy-saving work in power plant, the power saving of generating set is increasingly subject to pay attention to,
It is imperative that reducing energy consumption is carried out to generating set.
The requirement of 13 overall plannings：Adhere to optimizing the structure of production, Promote Technology, strengthen engineering measure, reinforced pipe
Reason guiding is combined, and is increased substantially efficiency of energy utilization, is substantially reduced pollutant emission；Further improve government for it is leading,
Enterprises as principal components, the propulsion energy-saving emission reduction work general layout that market effective driving, the whole society participate in jointly.
Generating set is typically using the rotating speed of institution of distributing gas's regulation steam turbine, in Application No. 201410404241.2
Shown in state's patent.But because its institution of distributing gas's overall efficiency is relatively low, during speed governing, it adds additional energy consumption.
The content of the invention
It is an object of the invention to overcome above shortcomings in the prior art, and provide a kind of reasonable in design
Based on the energy-saving and emission-reduction method of control valve opening heat consumption rate curve, the heat consumption of generating set is reduced, reaches saving energy, lowering energy consumption and reducing pollutants discharge
Purpose.
Technical scheme is used by the present invention solves the above problems：A kind of section based on control valve opening heat consumption rate curve
Energy discharge-reducing method, it is characterised in that：Comprise the following steps：
Step 1, under the stable each load condition of generating set, record the generating set each load condition regulation
Valve opening and generator end Power operation data, 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 of the generating set
Rate and generator end Power operation data, draw heat consumption rate and generator end power relation curve；
Step 3, the curve drawn according to step 1 and step 2, draw control valve opening and heat consumption rate relation curve；
Step 4, control valve opening and heat consumption rate relation formula y=established according to control valve opening and heat consumption rate relation curve
F (x), y represent heat consumption rate, and x represents control valve opening；First derivative y'=f' is asked to control valve opening and heat consumption rate relation formula
(x), derivative y' is influence coefficient of the unit institution of distributing gas to heat consumption；
Step 5, by analyzing the big datas of a large amount of units, draw influence coefficient of the various unit institution of distributing gas to heat consumption
Expression formula, in same adjustment valve opening value set it is more various influence coefficients minimums, the shadow belonging to the minimum
It is objective result to ring coefficient.
In step 1 of the present invention, using curve matching formula to each load condition control valve opening of generating set with generating electricity
Generator terminal Power operation data are fitted, and then draw control valve opening and generator end power relation curve.
In step 2 of the present invention, each load condition heat consumption rate and generator end using curve matching formula to generating set
Power operation data are fitted, and then draw heat consumption rate and generator end power relation curve.
In step 4 of the present invention, control valve opening is with heat consumption rate relation formula：
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 advantages below and effect：Unit heat consumption can be made effectively to reduce, reach section
Can be lowered consumption the purpose of emission reduction, and method simple practical, implementation process do not influence unit safety stability.
Brief description of the drawings
Fig. 1 is that the control valve opening that certain generating set of the embodiment of the present invention measures shows with generator end power relation curve
It is intended to.
Fig. 2 is that the heat consumption rate that certain generating set of the embodiment of the present invention measures is illustrated with generator end power relation curve
Figure.
Fig. 3 is that certain generating set control valve opening that the transposition of the embodiment of the present invention is drawn is illustrated with heat consumption rate relation curve
Figure.
Fig. 4 is influence coefficient curve schematic diagram of the various institution of distributing gas of the embodiment of the present invention to heat consumption.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is described in further detail by embodiment, and following examples are to this hair
Bright explanation and the invention is not limited in following examples.
The embodiment of the present invention comprises the following steps：
Step 1, under the stable each load condition of generating set, record the generating set each load condition regulation
Valve opening and generator end Power operation data, are fitted using curve matching formula to the service data, draw regulating valve
Aperture and generator end power relation curve, the curve are shown in Fig. 1.
Step 2, under the stable each load condition of generating set, record each load condition heat consumption of the generating set
Rate and generator end Power operation data, are fitted using curve matching formula to the service data, draw heat consumption rate and hair
Motor side power relation curve, the curve are shown in Fig. 2.
Step 3, the fitting formula established according to step 1 and step 2, draw control valve opening and heat consumption rate relation curve,
Curve is shown in Fig. 3.
Step 4, control valve opening and heat consumption rate relation formula y=established according to control valve opening and heat consumption rate relation curve
f(x)；In the present embodiment, the 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 values are the indexs of Trendline fitting degree, its numerical values recited can reflect the estimate of Trendline with it is right
Fitting degree between the real data answered, fitting degree is higher, and the reliability of Trendline is higher.
R square values are numerical value of the span between 0~1, when the R square values of Trendline are equal to 1 or close to 1
When, its reliability highest is on the contrary then reliability is relatively low.R square values are also referred to as the coefficient of determination.
First derivative y'=f'(x is asked to control valve opening and heat consumption rate relation formula), derivative y' is that the machine assembles vapour
Influence coefficient of the mechanism to heat consumption.
In the present embodiment, y '=- 237.185x4+2176.32x3-7374.3x2+11248.2x-6914.9。
In the present embodiment, formula y=f (x), such as Excel cans are established with program, point several equations, this technology
The curve of the formula of scheme fitting is completely superposed with drawing curve.
Step 5, by analyzing the big datas of a large amount of units, show that the various unit institution of distributing gas influence coefficient to heat consumption
Expression formula, various coefficient expressions are drawn on same chart, as shown in figure 4, the more various shadows in identical x values set
The minimum of coefficient is rung, the influence coefficient belonging to the minimum is objective result, the influence coefficient of the curve in Fig. 4 bottom
It is smaller.It can conclude that designing the new institution of distributing gas influences the smaller institution of distributing gas of coefficient on heat consumption, reduces the heat of generating set
Consumption, 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, it is named
Title etc. can be different, and the above content described in this specification is only to structure example explanation of the present invention.
Claims (5)
- A kind of 1. energy-saving and emission-reduction method based on control valve opening heat consumption rate curve, it is characterised in that：Comprise the following steps：Step 1, under the stable each load condition of generating set, each load condition regulating valve for recording the generating set is opened Degree and generator end Power operation data, 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 of the generating set with Generator end Power operation data, draw heat consumption rate and generator end power relation curve；Step 3, the curve drawn according to step 1 and step 2, draw control valve opening and heat consumption rate relation curve；Step 4, control valve opening and heat consumption rate relation formula y=f established according to control valve opening and heat consumption rate relation curve (x), y represents heat consumption rate, and x represents control valve opening；First derivative y'=f' is asked to control valve opening and heat consumption rate relation formula (x), derivative y' is influence coefficient of the unit institution of distributing gas to heat consumption；Step 5, by analyzing the big datas of a large amount of units, draw the table of influence coefficient of the various unit institution of distributing gas to heat consumption Up to formula, the more various minimums for influenceing coefficient, the influence system belonging to the minimum in same adjustment valve opening value set Number is objective result.
- 2. the energy-saving and emission-reduction method according to claim 1 based on control valve opening heat consumption rate curve, it is characterised in that：Step In rapid 1, each load condition control valve opening and generator end Power operation data using curve matching formula to generating set It is fitted, then draws control valve opening and generator end power relation curve.
- 3. the energy-saving and emission-reduction method according to claim 1 based on control valve opening heat consumption rate curve, it is characterised in that：Step In rapid 2, each load condition heat consumption rate of generating set is carried out with generator end Power operation data using curve matching formula Fitting, then draw heat consumption rate and generator end power relation curve.
- 4. the energy-saving and emission-reduction method according to claim 1 based on control valve opening heat consumption rate curve, it is characterised in that：In step 4, control valve opening is with heat consumption rate relation formula：y=-47.437x5+544.08x4-2458.1x3+5624.1x2-6914.9x+11657。
- 5. the energy-saving and emission-reduction method according to claim 4 based on control valve opening heat consumption rate curve, it is characterised in that：Institute Derivative y ' the=- 237.185x stated4+2176.32x3-7374.3x2+11248.2x-6914.9。
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| JPH06272936A (en) * | 1993-03-16 | 1994-09-27 | Noritz Corp | Control method of air conditioning apparatus |
| JP2002004879A (en) * | 2000-06-21 | 2002-01-09 | Mitsubishi Heavy Ind Ltd | Generalized operation command system of power generating plant |
| US8140296B2 (en) * | 2005-06-06 | 2012-03-20 | 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 |
| CN202732012U (en) * | 2012-04-01 | 2013-02-13 | 浙江亿扬能源科技有限公司 | Ventilation air methane oxidization power generation system |
| CN103530504B (en) * | 2013-09-27 | 2017-03-29 | 广东电网公司电力科学研究院 | The computing system and method for feasible traffic coverage under cogeneration units electricity determining by heat |
| CN103850726B (en) * | 2014-03-28 | 2015-06-24 | 苏州西热节能环保技术有限公司 | Method for quickly determining stationary sliding pressing optimization curve of steam turbine |
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