CN106339585A - Method for evaluating carbon emission intensity of coal-fired generator set - Google Patents
Method for evaluating carbon emission intensity of coal-fired generator set Download PDFInfo
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- CN106339585A CN106339585A CN201610706454.XA CN201610706454A CN106339585A CN 106339585 A CN106339585 A CN 106339585A CN 201610706454 A CN201610706454 A CN 201610706454A CN 106339585 A CN106339585 A CN 106339585A
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Abstract
The invention relates to a method for evaluating carbon emission intensity of a coal-fired generator set. The method comprises the following steps: obtaining corresponding calculated power supply CO2 emission intensity and calculated heat supply CO2 emission intensity according to the CO2 total emission quantity, power supply quantity, heat supply quantity, heat supply standard coal consumption and various-caliber power supply standard coal consumption of the coal-fired generator set; obtaining calculated power supply raw coal quantity according to the raw coal consumption total quantity, the calculated power supply CO2 emission intensity and the calculated heat supply CO2 emission intensity of the coal-fired generator set; obtaining calculated power supply standard coal quantity according to the raw coal annual average receipt based low-level heating quality and the calculated power supply raw coal quantity of the coal-fired generator set; obtaining checked power supply standard coal consumption according to the power supply quantity and the calculated power supply standard coal quantity; and obtaining real power supply standard coal consumption, wherein the calculated power supply CO2 emission intensity and the calculated heat supply CO2 emission intensity corresponding to the real power supply standard coal consumption are real power supply CO2 emission intensity and real heat supply CO2 emission intensity. The power supply standard coal consumption is checked, so that the calculation deviation is reduced.
Description
Technical field
The invention belongs to carbon emission calculating field, it is related to a kind of Thermal generation unit carbon intensity appraisal procedure.
Background technology
China's electric power and heating power produce and account for coal-fired co at present2The 40% about of total emission volumn, with domestic carbon transaction market
Progressively foundation, the calculation of carbon emission quota become improves carbon market construction important foundation stone, be also each enterprise weigh
The key element of itself carbon emission level.In the model regions in carbon transaction market, fossil power plant carbon emission quota is usually
With the carbon intensity of facility aspect as basis, i.e. the power supply co according to every Thermal generation unit2Discharge intensity (tco2/
) and heat supply co mwh2Discharge intensity (tco2/ gj) carry out the granting of carbon emission quota.Both definition are respectively as follows:
As unit co2When total emission volumn, delivery, heating load have determined that, power co2Discharge intensity and heat supply co2Discharge intensity is only
Relevant with the coal consumption of power supply of unit and heat supply mark coal consumption.But in fact, because electricity power enterprise adopts when calculating coal consumption of power supply
With the different pattern of several sets and bore, lead to coal consumption of power supply different, final impact power supply co2Discharge intensity and heat supply co2
The result of calculation of discharge intensity.Such as certain 300mw unit, its annual related data is as shown in the table:
As can be seen from the above table, the coal consumption of power supply of 3 kinds of different bores has drawn different power supply co2Discharge intensity and heat supply
co2Discharge intensity.With the co that powers2Discharge intensity difference 0.001tco2/ mwh, market co240 yuan/tco of price2Calculate, this unit
The power supply co of current year2Discharge costs differ about 7.4 ten thousand yuan.
Although being also related to carbon intensity appraisal procedure now, such as publication date is on 03 16th, 2016, Publication No.
In the Chinese patent of cn105404762a, a kind of disclosed provincial electric power carbon emission appraisal procedure based on consumption perspective, but
This appraisal procedure is not suitable for Thermal generation unit carbon intensity is assessed.
Content of the invention
The present invention causes to calculate the problem of deviation it is proposed that a kind of Thermal generation unit carbon is arranged for coal consumption of power supply difference
Put strength assessment method, can be used for checking coal consumption of power supply, reduce and calculate deviation.
The present invention solves the above problems and be the technical scheme is that this Thermal generation unit carbon intensity appraisal procedure
Feature be: the step of methods described is as follows:
Step 1, according to Thermal generation unit co2Total emission volumn, delivery, the confession of heating load, heat supply mark coal consumption and various bore
Electricity mark coal consumption, draws corresponding calculating power supply co2Discharge intensity and calculating heat supply co2Discharge intensity;
Step 2, according to unit raw coal total amount consumed, calculates power supply co2Discharge intensity and calculating heat supply co2Discharge intensity, draws
Calculate power supply raw coal amount;
Step 3, according to unit raw coal annual net calorific value as received basis and calculating power supply raw coal amount, draws calculating power supply mark coal
Amount;
Step 4, according to delivery and calculating power supply mark coal amount, draws check coal consumption of power supply;
Step 5, calculates the check coal consumption of power supply mean value that various bore coal consumption of power supplies are drawn, marks closest to checking power supply
The coal consumption of power supply data of coal consumption mean value is true coal consumption of power supply;Calculate corresponding with true coal consumption of power supply is powered
co2Discharge intensity and calculating heat supply co2Discharge intensity, as truly power co2Discharge intensity and true heat supply co2Discharge intensity.
Preferably, calculating power supply co in step 1 of the present invention2Discharge intensity and calculating heat supply co2The calculating of discharge intensity is public
Formula is respectively as follows:
.
Preferably, calculating power supply raw coal amount in step 2 of the present invention, calculating power supply mark coal amount and step 4 lieutenant colonel in step 3
The computing formula of core coal consumption of power supply is respectively as follows:
.
Preferably, in step 1 of the present invention, Thermal generation unit co2The unit of total emission volumn is tco2, the list of delivery
Position is mwh, and the unit of heating load is gj, and the unit of heat supply mark coal consumption is kg/gj, and the unit of the coal consumption of power supply of various bores is
Kg/mwh, calculates power supply co2The unit of discharge intensity is tco2/ mwh, calculates heat supply co2The unit of discharge intensity is tco2/gj;
In step 2, the unit of unit raw coal total amount consumed is t, and the unit calculating power supply raw coal amount is t;
In step 3, the unit of unit raw coal annual net calorific value as received basis is kj/kg, calculates the unit of power supply mark coal amount
For t;
In step 4, the unit checking coal consumption of power supply is kg/mwh.
The present invention compared with prior art, has advantages below and effect: can be to Thermal generation unit carbon intensity
In calculating process, the coal consumption of power supply of various bores is verified, thus to power supply co2Discharge intensity and heat supply co2Discharge intensity
Carry out qualitative assessment, find out the most real result of calculation, reduce calculation error, be fossil power plant co2Discharge is cost-effective.
Brief description
Fig. 1 is the schematic flow sheet of Thermal generation unit carbon intensity appraisal procedure in the embodiment of the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following examples are to this
Bright explanation and the invention is not limited in following examples.
Embodiment 1.
Referring to Fig. 1, the subcritical Thermal generation unit of certain 300mw, year raw coal total amount consumed be 829274t, raw coal annual
Net calorific value as received basis be 21738kj/kg, year delivery be 1797795mwh, year heating load be 1075522gj, year co2Row
Putting total amount is 1700543tco2, heat supply mark coal consumption is 41.39kg/gj.Due to having 3 kinds to the statistical of station service and bore
Method, the coal consumption of power supply of this unit also has 3 kinds, is respectively as follows: 311.03,314.23 and 316.87kg/mwh.
Step 1, draws each self-corresponding calculating power supply co of 3 kinds of coal consumption of power supplies first2Discharge intensity and calculating heat supply
co2Discharge intensity., it calculates power supply co taking coal consumption of power supply 311.03kg/mwh as a example2Discharge intensity and calculating heat supply co2Row
Putting intensity is:
.
Similar, show that coal consumption of power supply is 314.23 and 316.87kg/mwh is corresponding and calculate power supply co2Discharge intensity
With calculating heat supply co2Discharge intensity, result of calculation is as follows:
Step 2, draws calculating power supply raw coal amount.Taking coal consumption of power supply 311.03kg/mwh as a example,
.
Similar, show that coal consumption of power supply is 314.23 and the corresponding power supply raw coal amount that calculates of 316.87kg/mwh is respectively
768695.97t and 769165.56t.
Step 3, draws calculating power supply mark coal amount.Taking coal consumption of power supply 311.03kg/mwh as a example,
.
Similar, show that coal consumption of power supply is 314.23 and the corresponding power supply mark coal amount that calculates of 316.87kg/mwh is respectively
570167.98t and 570516.29t.
Step 4, draws check coal consumption of power supply.Taking coal consumption of power supply 311.03kg/mwh as a example,
.
Similar, show that coal consumption of power supply is 314.23 and the corresponding coal consumption of power supply of checking of 316.87kg/mwh is respectively
317.15 and 317.34kg/mwh.
Step 5, when coal consumption of power supply fluctuates in 311.03~316.87kg/mwh (fluctuation range is 5.84), checks and supplies
Electricity mark coal consumption is only 316.91~317.34kg/mwh fluctuation (fluctuation range is 0.43).Try to achieve check coal consumption of power supply mean value
For:
.
By contrast, coal consumption of power supply 316.87kg/mwh connects most with checking coal consumption of power supply mean value 317.13kg/mwh
Closely.Therefore true coal consumption of power supply is 316.87kg/mwh, its corresponding true power supply co2Discharge intensity is 0.8773tco2/
Mwh, true heat supply co2Discharge intensity is 0.1146tco2/gj.
Embodiment 2.
Referring to Fig. 1, the overcritical Thermal generation unit of certain 660mw, year raw coal total amount consumed be 1636999t, raw coal annual
Net calorific value as received basis be 21046kj/kg, year delivery be 3861049mwh, year heating load be 0gj, year co2Total emission volumn
For 3273286tco2, heat supply mark coal consumption is 0kg/gj.Due to having 3 kinds of methods, this unit to the statistical of station service and bore
Coal consumption of power supply also have 3 kinds, be respectively as follows: 305.00,306.17 and 307.32kg/mwh.
According to the method for step 1~step 4 in embodiment 1, it is respectively calculated, obtain following result:
Step 5, because this unit heating load is 0gj, the check coal consumption of power supply that therefore 3 kinds coal consumption of power supplies draw is
304.47kg/mwh, checks coal consumption of power supply mean value and is 304.47kg/mwh.The true coal consumption of power supply of this unit is
305.00kg/mwh, truly power co2Discharge intensity is 0.8478tco2/ mwh, true heat supply co2Discharging intensity is
0.00tco2/gj.
Embodiment 3.
Referring to Fig. 1, certain 145mw super-pressure Thermal generation unit, year raw coal total amount consumed be 310314t, raw coal annual
Net calorific value as received basis be 19485kj/kg, year delivery be 469079mwh, year heating load be 1551205gj, year co2Row
Putting total amount is 573527tco2, heat supply mark coal consumption is 40.01kg/gj.Due to having 3 kinds of sides to the statistical of station service and bore
Method, the coal consumption of power supply of this unit also has 3 kinds, is respectively as follows: 308.73,312.75 and 320.43kg/mwh.
According to the method for step 1~step 4 in embodiment 1, it is respectively calculated, obtain following result:
Step 5, when coal consumption of power supply fluctuates in 308.73~320.43kg/mwh (fluctuation range is 11.70), checks power supply
Mark coal consumption is only 307.90~311.26kg/mwh fluctuation (fluctuation range is 3.36).Try to achieve check coal consumption of power supply mean value
For: 309.42kg/mwh.By contrast, coal consumption of power supply 308.73kg/mwh and check coal consumption of power supply mean value 309.42kg/
Mwh is closest.Therefore true coal consumption of power supply is 308.73kg/mwh, its corresponding true power supply co2Discharging intensity is
0.8559tco2/ mwh, true heat supply co2Discharge intensity is 0.1109tco2/gj.
Embodiment 4.
Referring to Fig. 1, the Thermal generation unit carbon intensity appraisal procedure in the present embodiment comprises the following steps.
Step 1, according to Thermal generation unit co2Total emission volumn (unit tco2), delivery (unit mwh), heating load (single
Position gj), heat supply mark coal consumption (units/kg/gj), the coal consumption of power supply (units/kg/mwh) of various bore, draw corresponding calculate supply
Electric co2Discharge intensity (unit tco2/ mwh) and calculate heat supply co2Discharge intensity (unit tco2/ gj).
Calculate power supply co2Discharge intensity and calculating heat supply co2The computing formula of discharge intensity is respectively as follows:
.
Step 2, according to unit raw coal total amount consumed (unit t), calculating power supply co2Discharge intensity and calculating heat supply co2Discharge
Intensity, draws calculating power supply raw coal amount (unit t).
The computing formula calculating power supply raw coal amount is:
.
Step 3, according to unit raw coal annual net calorific value as received basis (unit kj/kg), calculates power supply raw coal amount, obtains
Go out to calculate power supply mark coal amount (unit t).
The computing formula calculating power supply mark coal amount is:
.
Wherein, 29307 is the low heat valve of standard coal, unit kj/kg.
Step 4, according to delivery, calculates power supply mark coal amount, draws check coal consumption of power supply (units/kg/mwh).
The computing formula checking coal consumption of power supply is:
.
Step 5, when coal consumption of power supply changes within the specific limits, affects very on the result of calculation checking coal consumption of power supply
Little, the check coal consumption of power supply mean value that various bore coal consumption of power supplies are calculated can be obtained, and power supply mark will be checked
Coal consumption mean value is considered as definite value.Checking coal consumption of power supply mean value compared with the coal consumption of power supply of various bores, will connect most
The nearly coal consumption of power supply data checking coal consumption of power supply mean value is considered as true coal consumption of power supply.Therefore, with true power supply mark coal
Consumption is corresponding to calculate power supply co2Discharge intensity and calculating heat supply co2Discharge intensity, as truly power co2Discharge intensity and true
Heat supply co2Discharge intensity.
Furthermore, it is necessary to explanation, 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 present configuration example explanation.All according to
The equivalence changes done according to the construction described in inventional idea of the present invention, feature and principle or simple change, are all included in this
In the protection domain of bright patent.Those skilled in the art can do various to described specific embodiment
The modification of various kinds or supplement or substituted using similar mode, the structure without departing from the present invention or surmount present claims
Scope defined in book, all should belong to protection scope of the present invention.
Claims (4)
1. a kind of Thermal generation unit carbon intensity appraisal procedure it is characterised in that: the step of methods described is as follows:
Step 1, according to Thermal generation unit co2Total emission volumn, delivery, the power supply of heating load, heat supply mark coal consumption and various bore
Mark coal consumption, draws corresponding calculating power supply co2Discharge intensity and calculating heat supply co2Discharge intensity;
Step 2, according to unit raw coal total amount consumed, calculates power supply co2Discharge intensity and calculating heat supply co2Discharge intensity, draws meter
Calculate power supply raw coal amount;
Step 3, according to unit raw coal annual net calorific value as received basis and calculating power supply raw coal amount, draws calculating power supply mark coal
Amount;
Step 4, according to delivery and calculating power supply mark coal amount, draws check coal consumption of power supply;
Step 5, calculates the check coal consumption of power supply mean value that various bore coal consumption of power supplies are drawn, marks closest to checking power supply
The coal consumption of power supply data of coal consumption mean value is true coal consumption of power supply;Calculate corresponding with true coal consumption of power supply is powered
co2Discharge intensity and calculating heat supply co2Discharge intensity, as truly power co2Discharge intensity and true heat supply co2Discharge intensity.
2. Thermal generation unit carbon intensity appraisal procedure according to claim 1 it is characterised in that: step 1 is fallen into a trap
Calculate power supply co2Discharge intensity and calculating heat supply co2The computing formula of discharge intensity is respectively as follows:
.
3. Thermal generation unit carbon intensity appraisal procedure according to claim 1 it is characterised in that: step 2 is fallen into a trap
The computing formula calculating check coal consumption of power supply in power supply mark coal amount and step 4 in calculation power supply raw coal amount, step 3 is respectively as follows:
.
4. Thermal generation unit carbon intensity appraisal procedure according to claim 1 it is characterised in that:
In step 1, Thermal generation unit co2The unit of total emission volumn is tco2, the unit of delivery is mwh, the unit of heating load
For gj, the unit of heat supply mark coal consumption is kg/gj, and the unit of the coal consumption of power supply of various bores is kg/mwh, calculates power supply co2Row
The unit putting intensity is tco2/ mwh, calculates heat supply co2The unit of discharge intensity is tco2/gj;
In step 2, the unit of unit raw coal total amount consumed is t, and the unit calculating power supply raw coal amount is t;
In step 3, the unit of unit raw coal annual net calorific value as received basis is kj/kg, calculates the unit of power supply mark coal amount
For t;
In step 4, the unit checking coal consumption of power supply is kg/mwh.
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CN113592134A (en) * | 2021-06-15 | 2021-11-02 | 国网浙江省电力有限公司 | Power carbon emission assessment system and method based on energy data |
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CN108280047A (en) * | 2018-01-24 | 2018-07-13 | 江苏方天电力技术有限公司 | A kind of fired power generating unit carbon emission accounting method based on field monitoring data |
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CN113592134A (en) * | 2021-06-15 | 2021-11-02 | 国网浙江省电力有限公司 | Power carbon emission assessment system and method based on energy data |
CN113592134B (en) * | 2021-06-15 | 2023-09-26 | 国网浙江省电力有限公司 | Electric power carbon emission evaluation system and method based on energy data |
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