CN104331612A - Method for evaluating energy conservation and emission reduction comprehensive performances of thermal power generating unit based on small index integrating system - Google Patents

Method for evaluating energy conservation and emission reduction comprehensive performances of thermal power generating unit based on small index integrating system Download PDF

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Publication number
CN104331612A
CN104331612A CN201410578354.4A CN201410578354A CN104331612A CN 104331612 A CN104331612 A CN 104331612A CN 201410578354 A CN201410578354 A CN 201410578354A CN 104331612 A CN104331612 A CN 104331612A
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China
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thermal power
value
generating unit
saving
power generating
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CN201410578354.4A
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Inventor
孙栓柱
代家元
王林
周春蕾
张友卫
孙彬
王其祥
高进
王明
许国强
刘成
李春岩
高成明
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State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
Jiangsu Fangtian Power Technology Co Ltd
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State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
Jiangsu Fangtian Power Technology Co Ltd
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Priority to CN201410578354.4A priority Critical patent/CN104331612A/en
Publication of CN104331612A publication Critical patent/CN104331612A/en
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Abstract

The invention discloses a method for evaluating energy conservation and emission reduction comprehensive performances of a thermal power generating unit based on a small index integrating system. The method comprises the steps of: acquiring running data of the thermal power generating unit to obtain index data of each item of the thermal power generating unit; calculating score values of net coal consumption rate, station service power consumption rate, primary key control indexes, sulfur dioxide emission concentration, nitric oxide emission concentration and dust emission concentration, so that the unification of the key energy conservation and emission reduction evaluation index system of the thermal power generating unit can be realized; the energy conservation and emission reduction comprehensive benchmarking of the thermal power generating unit can be facilitated; the maximization of the energy conservation and emission reduction comprehensive environmental benefits of the unit can be realized; the unification and comprehensive quantitative analysis of the energy conservation and emission reduction effects of the thermal power generating unit can be realized; the method has good application prospect.

Description

Energy-saving for Thermal Power Units based on Small Indicators integrating system reduces discharging comprehensive performance evaluation method
Technical field
The present invention is specifically related to a kind of Energy-saving for Thermal Power Units based on Small Indicators integrating system and reduces discharging comprehensive performance evaluation method, belongs to fired power generating unit Comprehensive Assessment Technology field.
Background technology
At present, the Energy-saving for Thermal Power Units field that reduces discharging is evaluated and is mainly divided into energy-saving and environmental protection two large divisions, economized portion mainly evaluates the energy-saving effect of coal fired power generation with net coal consumption rate, station service power consumption rate, environmental protection part is evaluated mainly through unit discharge of major pollutant level.
But Energy efficiency evaluation index and environmental protection evaluation index exist larger coupled relation, such as, same unit, whether desulphurization system puts into operation, and net coal consumption rate difference is larger; Same unit, after installing flue gas denitrification system additional, coal consumption can increase, therefore, only carry out evaluating the effects of energy saving and emission reduction that accurately can not reflect unit from several indexs of a certain localized to unit performance, need to design a kind of energy-saving and emission-reduction performance integrated evaluating method for fired power generating unit, realizing the unification to Energy-saving for Thermal Power Units emission reduction effect, comprehensive quantification analysis, is current urgent problem.
Summary of the invention
The object of the invention is to overcome and only carry out evaluating the problem that accurately can not reflect the effects of energy saving and emission reduction of unit to unit performance from several indexs of a certain localized at present.Energy-saving for Thermal Power Units based on Small Indicators integrating system of the present invention reduces discharging comprehensive performance evaluation method, achieve the unification of the crucial energy-saving and emission-reduction assessment indicator system of fired power generating unit, be conducive to carrying out unit energy-saving and emission-reduction comprehensive to mark analysis, realize the maximization of unit energy-saving and emission-reduction integrated environment benefit, realize the unification to Energy-saving for Thermal Power Units emission reduction effect, comprehensive quantification analysis, have a good application prospect.
In order to achieve the above object, the technical solution adopted in the present invention is:
Energy-saving for Thermal Power Units based on Small Indicators integrating system reduces discharging comprehensive performance evaluation method, it is characterized in that: comprise the following steps,
Step (1), by gathering the service data of fired power generating unit, obtain the indices data of fired power generating unit, comprise net coal consumption rate value in the current year, industrial thermoelectric ratio, heating hotspot stress, station service power consumption rate, main steam temperature exceeding standard rate, reheat steam temperature exceeding standard rate, HPFH use rate, sulfur dioxide emissioning concentration, discharged nitrous oxides concentration, smoke dust discharge concentration;
Step (2), calculates net coal consumption rate score value F1,
F1=40+{ net coal consumption rate nominally-[net coal consumption rate value-3.6 × (20 × industrial thermoelectric is than+23 × heating hotspot stress) in the current year] }
Wherein, net coal consumption rate nominally=net coal consumption rate reference value × (S1 × S2 × S3), S1 are W flame stove correction factor, and S1 is 1.01; S2 is the correction factor of unit circulating water mode, and open circulation S2 is 1.0, closed cycle S2 is 1.008; S3 is unit output coefficient correction factor,
S 3 = 0 , L f > 0.8 0.06 × ( 0.8 - L f ) , L f ≤ 0.8
L ffor loading coefficient;
Step (3), calculates net coal consumption rate score value F2, operation Small Indicators score value F3, smoke dust discharge concentration score value F4, sulfur dioxide emissioning concentration score value F5 and calculates discharged nitrous oxides score value F6;
Step (4), calculates Energy-saving for Thermal Power Units and reduces discharging comprehensive performance value F,
F=F1+F2+F3+F4+F5+F6;
Step (5), F is the energy-saving and emission-reduction resultant effect of fired power generating unit, and score value is larger, and energy-saving and emission-reduction combination property is better; Otherwise, poorer, according to the F obtained, carry out the quantitative Ranking evaluation of fired power generating unit.
The aforesaid Energy-saving for Thermal Power Units based on Small Indicators integrating system reduces discharging comprehensive performance evaluation method, it is characterized in that: it is the score value 2 points that station service power consumption rate is the highest that step (3) calculates net coal consumption rate score value F2; Reach the reference value of fired power generating unit unit of the same type, obtain 1 point; Otherwise must 0 be divided into.
The aforesaid Energy-saving for Thermal Power Units based on Small Indicators integrating system reduces discharging comprehensive performance evaluation method, it is characterized in that: step (3), calculates the process running Small Indicators score value F3 as follows,
(1) with the vapor (steam) temperature before the high pressure automatic main throttle valve of steam turbine side for examination is worth, highest score is 5 points, times of collection/total times of collection * 5 beyond deduction of points value=main steam temperature actual value off-design value ± 3 DEG C;
(2) to press the vapor (steam) temperature before automatic main throttle valve to be worth for examination in steam turbine side, highest score is 5 points, times of collection/total times of collection * 5 beyond deduction of points value=reheat steam temperature actual value off-design value ± 3 DEG C;
(3) HPFH use rate highest score is 5 points, and lower than 95% not score, on 95% benchmark, HPFH use rate often increases by 1%, increases by 1 point.
The aforesaid Energy-saving for Thermal Power Units based on Small Indicators integrating system reduces discharging comprehensive performance evaluation method, it is characterized in that: step (3), the process calculating smoke dust discharge concentration score value F4 be concentration of emission up to standard 3 points, to exceed standard within 1 times to obtain 0 point, exceed standard 1 times and more than, button 3* (times of ultra standard-1) point.
The aforesaid Energy-saving for Thermal Power Units based on Small Indicators integrating system reduces discharging comprehensive performance evaluation method, it is characterized in that: step (3), the process calculating sulfur dioxide emissioning concentration score value F5 be concentration of emission up to standard 20 points, to exceed standard within 1 times to obtain 0 point, exceed standard 1 times and more than, button 20* (times of ultra standard-1) point.
The aforesaid Energy-saving for Thermal Power Units based on Small Indicators integrating system reduces discharging comprehensive performance evaluation method, it is characterized in that: step (3), the process calculating discharged nitrous oxides score value F6 be concentration of emission up to standard 12 points, to exceed standard within 1 times to obtain 0 point, exceed standard 1 times and more than, button 12* (times of ultra standard-1) point.
The invention has the beneficial effects as follows: the Energy-saving for Thermal Power Units based on Small Indicators integrating system of the present invention reduces discharging comprehensive performance evaluation method, by gathering the service data of fired power generating unit, obtain the indices data of fired power generating unit, and calculate net coal consumption rate, station service power consumption rate, Chief Con trolling index, sulfur dioxide emissioning concentration, discharged nitrous oxides concentration, smoke dust discharge concentration six score value, achieve the unification of the crucial energy-saving and emission-reduction assessment indicator system of fired power generating unit, be conducive to carrying out unit energy-saving and emission-reduction comprehensive to mark analysis, realize the maximization of unit energy-saving and emission-reduction integrated environment benefit, realize the unification to Energy-saving for Thermal Power Units emission reduction effect, comprehensive quantification is analyzed, have a good application prospect.
Accompanying drawing explanation
Fig. 1 is the process flow diagram that the Energy-saving for Thermal Power Units based on Small Indicators integrating system of the present invention reduces discharging comprehensive performance evaluation method.
Embodiment
Below in conjunction with Figure of description, the present invention is further illustrated.
Energy-saving for Thermal Power Units based on Small Indicators integrating system of the present invention reduces discharging comprehensive performance evaluation method, by gathering the service data of fired power generating unit, obtain the indices data of fired power generating unit, and calculate net coal consumption rate, station service power consumption rate, Chief Con trolling index, sulfur dioxide emissioning concentration, discharged nitrous oxides concentration, smoke dust discharge concentration six score value, achieve the unification of the crucial energy-saving and emission-reduction assessment indicator system of fired power generating unit, be conducive to carrying out unit energy-saving and emission-reduction comprehensive to mark analysis, realize the maximization of unit energy-saving and emission-reduction integrated environment benefit, realize the unification to Energy-saving for Thermal Power Units emission reduction effect, comprehensive quantification is analyzed, as shown in Figure 1, specifically comprise the following steps,
Step (1), by gathering the service data of fired power generating unit, obtain the indices data of fired power generating unit, comprise net coal consumption rate value in the current year, industrial thermoelectric ratio, heating hotspot stress, station service power consumption rate, main steam temperature exceeding standard rate, reheat steam temperature exceeding standard rate, HPFH use rate, sulfur dioxide emissioning concentration, discharged nitrous oxides concentration, smoke dust discharge concentration;
Step (2), calculates net coal consumption rate score value F1,
F1=40+{ net coal consumption rate nominally-[net coal consumption rate value-3.6 × (20 × industrial thermoelectric is than+23 × heating hotspot stress) in the current year] }
Wherein, net coal consumption rate nominally=net coal consumption rate reference value × (S1 × S2 × S3), S1 are W flame stove correction factor, and S1 is 1.01; S2 is the correction factor of unit circulating water mode, and open circulation S2 is 1.0, closed cycle S2 is 1.008; S3 is unit output coefficient correction factor,
S 3 = 0 , L f > 0.8 0.06 × ( 0.8 - L f ) , L f ≤ 0.8
L ffor loading coefficient, as shown in table 1 below, be all kinds pure condensate unit net coal consumption rate, station service power consumption rate reference value
Table 1 all kinds pure condensate unit net coal consumption rate, station service power consumption rate reference value
Note: thermal power plant unit: hotspot stress increases by 10%, and on pure condensate crew base, unit net coal consumption rate gap can increase 2gce/kWh
Step (3), calculates net coal consumption rate score value F2, operation Small Indicators score value F3, smoke dust discharge concentration score value F4, sulfur dioxide emissioning concentration score value F5 and calculates discharged nitrous oxides score value F6;
Step (4), calculates Energy-saving for Thermal Power Units and reduces discharging comprehensive performance value F,
F=F1+F2+F3+F4+F5+F6;
Step (5), F is energy-saving and emission-reduction resultant effect, and score value is larger, and energy-saving and emission-reduction combination property is better; Otherwise, poorer, according to the F obtained, carry out the quantitative Ranking evaluation of fired power generating unit.
Wherein, step (3) calculates net coal consumption rate score value F2 is the score value 2 points that station service power consumption rate is the highest; Reach the reference value of fired power generating unit unit of the same type, obtain 1 point; Otherwise must 0 be divided into.
Calculate the process running Small Indicators score value F3 as follows,
(1) with the vapor (steam) temperature before the high pressure automatic main throttle valve of steam turbine side for examination is worth, highest score is 5 points, times of collection/total times of collection * 5 beyond deduction of points value=main steam temperature actual value off-design value ± 3 DEG C;
(2) to press the vapor (steam) temperature before automatic main throttle valve to be worth for examination in steam turbine side, highest score is 5 points, times of collection/total times of collection * 5 beyond deduction of points value=reheat steam temperature actual value off-design value ± 3 DEG C;
(3) HPFH use rate highest score is 5 points, and lower than 95% not score, on 95% benchmark, HPFH use rate often increases by 1%, increases by 1 point;
The process calculating smoke dust discharge concentration score value F4 be concentration of emission up to standard 3 points, to exceed standard within 1 times to obtain 0 point, exceed standard 1 times and more than, button 3* (times of ultra standard-1) point;
The process calculating sulfur dioxide emissioning concentration score value F5 be concentration of emission up to standard 20 points, to exceed standard within 1 times to obtain 0 point, exceed standard 1 times and more than, button 20* (times of ultra standard-1) point;
The process calculating discharged nitrous oxides score value F6 be concentration of emission up to standard 12 points, to exceed standard within 1 times to obtain 0 point, exceed standard 1 times and more than, button 12* (times of ultra standard-1) point;
Reduce discharging comprehensive performance evaluation method below in conjunction with the Energy-saving for Thermal Power Units based on Small Indicators integrating system of the present invention, introduce a specific embodiment,
Introduce integrated evaluating method applicable cases with Jiangsu part generate electricity enterprise actual measurement evaluation index data instance, shown in following table 2, be Jiangsu part generate electricity enterprise installation situation,
Table 2 Jiangsu part generate electricity enterprise installation situation
Be each electricity power enterprise statistical time range energy-saving shown in following table 3 and reduce discharging actual measurement statistical index data,
Table 3 each electricity power enterprise statistical time range energy-saving reduces discharging actual measurement statistical index data
According to method of the present invention, it is as shown in table 4 below that each Energy-saving for Thermal Power Units that statistical computation obtains reduces discharging comprehensive performance,
The each Energy-saving for Thermal Power Units of table 4 reduces discharging comprehensive performance value
As can be seen from Table 4, if only consider unit net coal consumption rate, then S9U2 unit is the most energy-conservation, if only consider sulfur dioxide (SO2) emissions situations, then and the most environmental protection of S10U1 unit, if only consider discharged nitrous oxides situation, the then most environmental protection of S1U2 unit, if only consider soot emissions situation, then the most environmental protection of S9U2 unit, and calculate according to Small Indicators integral method of the present invention, obtain S1U2 energy-conserving and environment-protective performance best.
Upper display and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (6)

1. the Energy-saving for Thermal Power Units based on Small Indicators integrating system reduces discharging comprehensive performance evaluation method, it is characterized in that: comprise the following steps,
Step (1), by gathering the service data of fired power generating unit, obtain the indices data of fired power generating unit, indices data comprise net coal consumption rate value in the current year, industrial thermoelectric ratio, heating hotspot stress, station service power consumption rate, main steam temperature exceeding standard rate, reheat steam temperature exceeding standard rate, HPFH use rate, sulfur dioxide emissioning concentration, discharged nitrous oxides concentration, smoke dust discharge concentration;
Step (2), calculates net coal consumption rate score value F1,
F1=40+{ net coal consumption rate nominally-[net coal consumption rate value-3.6 × (20 × industrial thermoelectric is than+23 × heating hotspot stress) in the current year] }
Wherein, net coal consumption rate nominally=net coal consumption rate reference value × (S1 × S2 × S3), S1 are W flame stove correction factor, and S1 is 1.01; S2 is the correction factor of unit circulating water mode, and open circulation S2 is 1.0, closed cycle S2 is 1.008; S3 is unit output coefficient correction factor,
S 3 = 0 , L f > 0.8 0.06 × ( 0.8 - L f ) , L f ≤ 0.8
L ffor loading coefficient;
Step (3), calculates net coal consumption rate score value F2, operation Small Indicators score value F3, smoke dust discharge concentration score value F4, sulfur dioxide emissioning concentration score value F5 and calculates discharged nitrous oxides score value F6;
Step (4), calculates Energy-saving for Thermal Power Units and reduces discharging comprehensive performance value F,
F=F1+F2+F3+F4+F5+F6;
Step (5), F is the energy-saving and emission-reduction resultant effect of fired power generating unit, and score value is larger, and energy-saving and emission-reduction combination property is better; Otherwise, poorer, according to the F obtained, carry out the quantitative Ranking evaluation of fired power generating unit.
2. the Energy-saving for Thermal Power Units based on Small Indicators integrating system according to claim 1 reduces discharging comprehensive performance evaluation method, it is characterized in that: it is the score value 2 points that station service power consumption rate is the highest that step (3) calculates net coal consumption rate score value F2; Reach the reference value of fired power generating unit unit of the same type, obtain 1 point; Otherwise must 0 be divided into.
3. the Energy-saving for Thermal Power Units based on Small Indicators integrating system according to claim 1 reduces discharging comprehensive performance evaluation method, it is characterized in that: step (3), calculates the process running Small Indicators score value F3 as follows,
(1) with the vapor (steam) temperature before the high pressure automatic main throttle valve of steam turbine side for examination is worth, highest score is 5 points, times of collection/total times of collection * 5 beyond deduction of points value=main steam temperature actual value off-design value ± 3 DEG C;
(2) to press the vapor (steam) temperature before automatic main throttle valve to be worth for examination in steam turbine side, highest score is 5 points, times of collection/total times of collection * 5 beyond deduction of points value=reheat steam temperature actual value off-design value ± 3 DEG C;
(3) HPFH use rate highest score is 5 points, and lower than 95% not score, on 95% benchmark, HPFH use rate often increases by 1%, increases by 1 point.
4. the Energy-saving for Thermal Power Units based on Small Indicators integrating system according to claim 1 reduces discharging comprehensive performance evaluation method, it is characterized in that: step (3), the process calculating smoke dust discharge concentration score value F4 be concentration of emission up to standard 3 points, to exceed standard within 1 times to obtain 0 point, exceed standard 1 times and more than, button 3* (times of ultra standard-1) point.
5. the Energy-saving for Thermal Power Units based on Small Indicators integrating system according to claim 1 reduces discharging comprehensive performance evaluation method, it is characterized in that: step (3), the process calculating sulfur dioxide emissioning concentration score value F5 be concentration of emission up to standard 20 points, to exceed standard within 1 times to obtain 0 point, exceed standard 1 times and more than, button 20* (times of ultra standard-1) point.
6. the Energy-saving for Thermal Power Units based on Small Indicators integrating system according to claim 1 reduces discharging comprehensive performance evaluation method, it is characterized in that: step (3), the process calculating discharged nitrous oxides score value F6 be concentration of emission up to standard 12 points, to exceed standard within 1 times to obtain 0 point, exceed standard 1 times and more than, button 12* (times of ultra standard-1) point.
CN201410578354.4A 2014-10-24 2014-10-24 Method for evaluating energy conservation and emission reduction comprehensive performances of thermal power generating unit based on small index integrating system Pending CN104331612A (en)

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* Cited by examiner, † Cited by third party
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Application publication date: 20150204