CN115017730B - Condensate pump electricity consumption correction calculation method in station service electricity consumption calculation of thermal power generating unit - Google Patents
Condensate pump electricity consumption correction calculation method in station service electricity consumption calculation of thermal power generating unit Download PDFInfo
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Abstract
A condensate pump electricity consumption correction calculation method in the station service electricity consumption calculation of a thermal power generating unit comprises the following steps: a. calculating a lift-to-electricity consumption correction factor f according to the lift, the rotating speed test and the design value 1 The method comprises the steps of carrying out a first treatment on the surface of the b. Calculating a flow-to-electricity consumption correction factor f according to flow, rotation speed test and design values 2 The method comprises the steps of carrying out a first treatment on the surface of the c. According to the turbine test and the corrected heat rate, calculating a heat rate difference to electricity consumption correction factor f 3 The method comprises the steps of carrying out a first treatment on the surface of the d. Calculating a power consumption correction factor f of the difference of the heat consumption rates according to the corrected and designed heat consumption rates of the steam turbine 4 The method comprises the steps of carrying out a first treatment on the surface of the e. According to the exhaust pressure of the unit, calculating the correction factor f of the exhaust pressure to the electricity consumption 5 The method comprises the steps of carrying out a first treatment on the surface of the f. According to the aging month number of the steam turbine, calculating an aging-to-electricity consumption correction factor f 6 The method comprises the steps of carrying out a first treatment on the surface of the g. Calculating the corrected power consumption of the condensate pump by using the correction factors and the actually measured power consumption; h. the correction factors can be selected according to the purpose of the test. By using the method for correcting and calculating the power consumption of the condensate pump, the corrected power consumption can reflect the actual performance of the equipment and the unit under the corresponding test purpose.
Description
Technical Field
The invention belongs to the field of thermal performance tests of generator sets, and particularly relates to a condensate pump electricity consumption correction calculation method in station service electricity consumption calculation of a thermal power generating unit.
Background
The plant power consumption is an index reflecting the power consumption of auxiliary equipment of the unit, and factors influencing the plant power consumption of the unit mainly comprise the following components in addition to the self performance: (1) External conditions, such as coal variety change, environmental temperature change and the like, can have great influence on the energy consumption of equipment such as a condensate pump, a water supply pump, a fan, a coal mill and the like when the conditions deviate from design values; (2) Operating conditions, such as operating modes and operating parameter settings that deviate from design (or warranty) operating conditions, can also affect auxiliary equipment energy consumption indicators to varying degrees.
In all factory electric equipment, the factors influencing the actual measurement electricity consumption of the condensate pump are more complex, and mainly comprise the following influencing factors and rules:
(1) And the pump lift of the condensate pump. When the lift of the condensate pump is increased, the power consumption of the condensate pump is correspondingly increased;
(2) Condensate pump flow. When the flow of the condensate pump is increased, the power consumption of the condensate pump is correspondingly increased;
(3) Heat rate of the turbine. When the actually measured heat consumption rate of the steam turbine rises, the flow rate of condensate water is increased under the condition that the unit keeps the same output, and the power consumption of a condensate pump is correspondingly increased;
(4) Steam turbine exhaust pressure. When the exhaust pressure of the steam turbine rises, the flow rate of the condensate water is increased under the condition that the unit keeps the same output, and the power consumption of a condensate pump is correspondingly increased;
(5) The turbine performance ages. According to objective rules, the heat rate of the steam turbine gradually increases with the increase of the operation time, which is called the performance aging of the steam turbine. With the increase of the running time, under the condition that the output power of the unit is fixed, the performance of the turbine is continuously aged, the output heat of the boiler is gradually increased, so that the required water supply flow rate is also increased along with the aging of the turbine, and the power consumption of the condensate pump is correspondingly increased.
Based on the above analysis, it is important to correct the above influence factors when evaluating the power consumption of the condensate pump. However, none of the presently disclosed documents fully considers the calculation formulas or methods for correcting the above factors. Therefore, the method for correcting and calculating the power consumption of the condensate pump in the power consumption calculation of the factory is discussed.
Disclosure of Invention
The invention aims to provide a condensate pump electricity consumption correction calculation method in the station electricity consumption calculation of a thermal power generating unit, and in the station electricity consumption test calculation of a generator set, the actual measured condensate pump electricity consumption can be corrected to corresponding design conditions according to different test purposes by using the method.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
a condensate pump electricity consumption correction calculation method in the station service electricity consumption calculation of a thermal power generating unit adopts a formula (1) to calculate corrected condensate pump electricity consumption:
P CEP_corr ＝P CEP_m +ΔP CEP (1)
wherein: p (P) CEP_corr The power consumption of the condensate pump after correction is kW; p (P) CEP_m The power consumption of the condensate pump is actually measured, and kW is obtained; ΔP CEP The power consumption correction amount of the condensate pump is kW;
the correction amount DeltaP of the electric consumption of the condensate pump in the formula (1) CEP The calculation is performed using formula (2):
ΔP CEP ＝P CEP_m ×f 1 ×f 2 ×f 3 ×f 4 ×f 5 ×f 6 ×f 7 -P CEP_m (2)
wherein: ΔP CEP The power consumption correction amount of the condensate pump is kW; p (P) CEP_m The power consumption value of the condensate pump is actually measured, and kW is obtained; f (f) 1 The correction factor of the lift of the condensate pump to the power consumption of the condensate pump is used; f (f) 2 The correction factor of the flow rate to the power consumption of the condensate pump at the rated rotation speed of the condensate pump is used; f (f) 3 The correction factor of the difference between the test heat rate and the corrected heat rate of the steam turbine on the power consumption of the condensate pump is used; f (f) 4 The correction factor of the difference between the corrected heat rate and the designed heat rate of the steam turbine on the power consumption of the condensate pump is calculated; f (f) 5 The correction factor of the exhaust pressure of the steam turbine to the power consumption of the condensate pump is used; f (f) 6 The correction factor of the turbine performance aging to the power consumption of the condensate pump is used; f (f) 7 The correction factor is used for other correction factors affecting the power consumption of the condensate pump;
correction factor f of pump lift to pump power consumption in formula (2) 1 The calculation is performed using formula (3):
wherein: h d The lift, m, of the condensate pump is designed under the rated test working condition; h t The test lift of the condensate pump is kJ/kg;
correction factor f of flow rate to power consumption of condensate pump at rated rotation speed of condensate pump in formula (2) 2 Calculation was performed using formula (4):
wherein: q (Q) d The flow rate of the condensate pump is designed under the rated test working condition, and t/h; q (Q) t And t/h is the test flow of the condensate pump.
The invention is further improved in that the difference between the test heat rate and the corrected heat rate of the turbine in the formula (2) is a correction factor f of the power consumption of the condensate pump 3 Calculation was performed using formula (5):
wherein: HR (HR) corr kJ/(kWh) is the turbine heat rate after the first class and the second class correction; HR (HR) t To test the turbine heat rate, kJ/(kWh).
A further improvement of the invention is that the turbine test heat rate HR in equation (5) t And the turbine heat consumption rate HR after the first class correction and the second class correction corr All were calculated with reference to ASME PTC 6 procedure for turbine performance test.
The invention is further improved in that the difference between the corrected heat rate and the designed heat rate of the steam turbine in the formula (2) is a correction factor f of the power consumption of the condensate pump 4 Calculation was performed using formula (6):
wherein: HR (HR) corr kJ/(kWh) is the turbine heat rate after the first class and the second class correction; HR (HR) d The heat rate kJ/(kWh) is designed for the turbine under test conditions.
The invention is further improved in that the correction factor f of the steam turbine exhaust pressure to the power consumption of the condensate pump in the formula (2) 5 The calculation is performed using formula (7):
wherein: p (P) b_t The pressure of the exhaust gas of the turbine is measured by kPa; p (P) b_d The pressure of the exhaust gas of the steam turbine is designed to be kPa; k is the influence coefficient of the steam turbine exhaust pressure on the steam turbine heat rate,%/kPa.
The invention is further improved in that the correction factor f of the turbine performance aging to the power consumption of the condensate pump in the formula (2) 6 The calculation is performed using equation (8):
wherein: m is the number of operation months from the first steam inlet of the steam turbine to the time before the test; b is the design output power of the steam turbine, MW; c is rated main steam pressure and MPa.
In the invention, the influence coefficient k of the turbine exhaust pressure on the turbine heat rate in the formula (6) is checked from a back pressure-heat rate correction curve provided by a turbine manufacturer or obtained by performing a turbine back pressure variation characteristic test.
The invention is further improved in that the test flow Q of the condensate pump t The measurement is carried out on a condensate pipeline at the outlet of the condensate pump, and the flow measurement is carried out according to the ISO 5167 standard of measuring the flow of fluid filled with a circular tube by using a pore plate, a nozzle and a venturi tube.
The invention is further improved in that the correction term f involved in the formula (2) 1 、f 2 To have to correct the term, f 3 、f 4 、f 5 、f 6 Selected according to the purpose of the test.
The invention has at least the following beneficial technical effects:
in the plant power consumption test calculation of the generator set, the correction calculation method provided by the invention can correct 6 factors (the lift of the condensate pump, the flow rate of the condensate pump at the rated rotation speed, the difference between the test heat consumption rate of the turbine and the corrected heat consumption rate, the difference between the corrected heat consumption rate of the turbine and the designed heat consumption rate, the steam discharge pressure of the turbine and the aging of the turbine) influencing the power consumption of the condensate pump to the design value according to different test purposes, so that the obtained power consumption of the condensate pump and the power consumption of the plant can reflect the actual performances of the set and the equipment under the corresponding test purposes.
Drawings
FIG. 1 is a graph of typical turbine heat rate versus turbine discharge pressure.
Detailed Description
The method for correcting and calculating the power consumption of the condensate pump in the power consumption calculation of the thermal power generating unit plant is further described in detail below by combining with an example.
The invention provides a condensate pump electricity consumption correction calculation method in the station service electricity consumption calculation of a thermal power generating unit, which comprises the following steps: and (3) calculating the corrected power consumption of the condensate pump by adopting a formula (1):
P CEP_corr ＝P CEP_m +ΔP CEP (1)
wherein: p (P) CEP_corr The power consumption of the condensate pump after correction is kW; p (P) CEP_m The power consumption of the condensate pump is actually measured, and kW is obtained; ΔP CEP And (5) correcting the power consumption of the condensate pump by kW.
The correction amount DeltaP of the electric consumption of the condensate pump in the formula (1) CEP The calculation is performed using formula (2):
ΔP CEP ＝P CEP_m ×f 1 ×f 2 ×f 3 ×f 4 ×f 5 ×f 6 ×f 7 -P CEP_m (2)
wherein: ΔP CEP The power consumption correction amount of the condensate pump is kW; p (P) CEP_m The power consumption value of the condensate pump is actually measured, and kW is obtained; f (f) 1 The correction factor of the lift of the condensate pump to the power consumption of the condensate pump is used; f (f) 2 The correction factor of the flow rate to the power consumption of the condensate pump at the rated rotation speed of the condensate pump is used; f (f) 3 The correction factor of the difference between the test heat rate and the corrected heat rate of the steam turbine on the power consumption of the condensate pump is used; f (f) 4 The correction factor of the difference between the corrected heat rate and the designed heat rate of the steam turbine on the power consumption of the condensate pump is calculated; f (f) 5 The correction factor of the exhaust pressure of the steam turbine to the power consumption of the condensate pump is used; f (f) 6 The correction factor of the turbine performance aging to the power consumption of the condensate pump is used; f (f) 7 And the correction factor is used for other correction factors affecting the power consumption of the condensate pump.
Correction of the pump lift to the pump power consumption in the above formula (2)Factor f 1 The calculation is performed using formula (3):
wherein: h d The lift, m, of the condensate pump is designed under the rated test working condition; h t The test lift of the condensate pump is kJ/kg.
Correction factor f of flow rate to power consumption of condensate pump at rated rotation speed of condensate pump in formula (2) 2 Calculation was performed using formula (4):
wherein: q (Q) d The flow rate of the condensate pump is designed under the rated test working condition, and t/h; q (Q) t And t/h is the test flow of the condensate pump.
Correction factor f of difference of turbine test heat rate and corrected heat rate in formula (2) on power consumption of condensate pump 3 Calculation was performed using formula (5):
wherein: HR (HR) corr kJ/(kWh) is the turbine heat rate after the first class and the second class correction; HR (HR) t To test the turbine heat rate, kJ/(kWh).
Turbine test Heat Rate HR in equation (5) t And the turbine heat consumption rate HR after the first class correction and the second class correction corr All were calculated with reference to ASME PTC 6 procedure for turbine performance test.
Correction factor f of difference between corrected heat rate and designed heat rate of turbine in formula (2) on power consumption of condensate pump 4 Calculation was performed using formula (6):
wherein: HR (HR) corr kJ/(kWh) is the turbine heat rate after the first class and the second class correction; HR (HR) d The heat rate kJ/(kWh) is designed for the turbine under test conditions.
Correction factor f of turbine exhaust pressure to condensate pump power consumption in formula (2) 5 The calculation is performed using formula (7):
wherein: p (P) b_t The pressure of the exhaust gas of the turbine is measured by kPa; p (P) b_d The pressure of the exhaust gas of the steam turbine is designed to be kPa; k is the influence coefficient of the steam turbine exhaust pressure on the steam turbine heat rate,%/kPa.
Correction factor f of turbine performance aging to condensate pump power consumption in formula (2) 6 The calculation is performed using equation (8):
wherein: m is the number of operation months from the first steam inlet of the steam turbine to the time before the test; b is the design output power of the steam turbine, MW; c is rated main steam pressure and MPa.
The coefficient of influence k of the turbine discharge pressure in the formula (6) on the turbine heat rate is obtained from a back pressure versus heat rate correction graph provided by the turbine manufacturer as shown in fig. 1, or by performing a turbine variable back pressure characteristic test.
Test flow rate Q of condensate pump t The measurement is carried out on a condensate pipeline at the outlet of the condensate pump, and the flow measurement is carried out according to the ISO 5167 standard of measuring the flow of fluid filled with a circular tube by using a pore plate, a nozzle and a venturi tube.
Correction term f related to equation (2) 1 、f 2 To have to correct the term, f 3 、f 4 、f 5 、f 6 Can be according toThe purpose of the test is appropriately selected from: (a) If the power station is built as (EPC) total package project, the test aims at the test of checking and accepting the performance of the unit after production, wherein the test aims at obtaining the unit overall performance index (net heat rate, net output power, power supply coal consumption, power for the plant and power for the plant) which can be compared with the design assurance value 5 、f 6 Corrected f 3 ＝1、f 4 =1; (b) If the unit performance test is performed for obtaining the current actual performance index (net heat rate, net output power, power supply coal consumption, power supply station) of the unit 3 Corrected f 4 ＝1、f 5 ＝1、f 6 =1; (c) F, if the performance test is performed for obtaining the power consumption performance index of the condensate pump equipment body under the current design operation condition 2 、f 3 、f 4 、f 6 Corrected f 5 ＝1。
Other correction factors f related in formula (2) and influencing the power consumption of the condensate pump 7 The calculation method participates in the negotiation determination of each party of the test according to the special condition of the actual operation of the unit. Whether or not f is the factor in the three test purposes (a), (b) and (c) 7 And the correction is needed to participate in the negotiation determination of all the parties of the test according to the special condition of the actual operation of the unit.
Description of examples:
as shown in table 1, the whole performance acceptance test is performed on a 660MW coal-fired power generation unit (EPC) total package project, and the power consumption of the unit plant needs to be corrected, so that the power consumption of the condensate pump needs to be correspondingly corrected. The example belongs to the test object (a) in claim 11, and thus the correction factor f affecting the power consumption of the condensate pump 1 ～f 5 Correction calculation is needed.
The test unit is equipped with 3 condensate pumps in total, and under the 100% TMCR test working condition, the condensate pump operation mode is 1 fortune 1 is equipped with. During the test, the output power of the generator set is 686.380MW, the power consumption value of the total auxiliary machinery of the generator set is 56950.7kW, and the total power consumption of 2 condensate pumps is 1886.4kW.
In the example, the calculation result shows that the correction amount of the electric consumption of the condensate pump is minus 62.6kW, and the total plant electric power after the correction of the electric consumption of the condensate pump is 56888.1kW by correcting the lift of the condensate pump, the flow of the condensate pump at the rated rotating speed, the difference between the test heat rate and the corrected heat rate of the turbine, the difference between the corrected heat rate and the designed heat rate of the turbine, the exhaust pressure of the turbine and the aging month number of the turbine to the design value.
Table 1 example of calculation of power consumption correction for condensate pump
While the invention has been described in detail in the foregoing general description and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (9)
1. A condensate pump electricity consumption correction calculation method in the station service electricity consumption calculation of a thermal power generating unit is characterized in that a formula (1) is adopted to calculate corrected condensate pump electricity consumption:
P CEP_corr ＝P CEP_m +ΔP CEP (1)
wherein: p (P) CEP_corr The power consumption of the condensate pump after correction is kW; p (P) CEP_m The power consumption of the condensate pump is actually measured, and kW is obtained; ΔP CEP The power consumption correction amount of the condensate pump is kW;
the correction amount DeltaP of the electric consumption of the condensate pump in the formula (1) CEP The calculation is performed using formula (2):
ΔP CEP ＝P CEP_m ×f 1 ×f 2 ×f 3 ×f 4 ×f 5 ×f 6 ×f 7 -P CEP_m (2)
wherein: ΔP CEP The power consumption correction amount of the condensate pump is kW; p (P) CEP_m The power consumption value of the condensate pump is actually measured, and kW is obtained; f (f) 1 The correction factor of the lift of the condensate pump to the power consumption of the condensate pump is used; f (f) 2 The correction factor of the flow rate to the power consumption of the condensate pump at the rated rotation speed of the condensate pump is used; f (f) 3 The correction factor of the difference between the test heat rate and the corrected heat rate of the steam turbine on the power consumption of the condensate pump is used; f (f) 4 The correction factor of the difference between the corrected heat rate and the designed heat rate of the steam turbine on the power consumption of the condensate pump is calculated; f (f) 5 The correction factor of the exhaust pressure of the steam turbine to the power consumption of the condensate pump is used; f (f) 6 The correction factor of the turbine performance aging to the power consumption of the condensate pump is used; f (f) 7 The correction factor is used for other correction factors affecting the power consumption of the condensate pump;
correction factor f of pump lift to pump power consumption in formula (2) 1 The calculation is performed using formula (3):
wherein: h d The lift, m, of the condensate pump is designed under the rated test working condition; h t The test lift of the condensate pump is kJ/kg;
correction factor f of flow rate to power consumption of condensate pump at rated rotation speed of condensate pump in formula (2) 2 Calculation was performed using formula (4):
wherein: q (Q) d The flow rate of the condensate pump is designed under the rated test working condition, and t/h; q (Q) t And t/h is the test flow of the condensate pump.
2. The method for correcting and calculating the power consumption of a condensate pump in the power consumption calculation of a thermal power plant according to claim 1, wherein the power consumption correction calculation method is characterized in thatCorrection factor f of difference between turbine test heat rate and corrected heat rate in formula (2) on condensate pump power consumption 3 Calculation was performed using formula (5):
wherein: HR (HR) corr kJ/(kWh) is the turbine heat rate after the first class and the second class correction; HR (HR) t To test the turbine heat rate, kJ/(kWh).
3. The method for correcting and calculating the power consumption of the condensate pump in the power consumption calculation of the thermal power generating unit plant according to claim 2, wherein the turbine test heat consumption rate HR in the formula (5) t And the turbine heat consumption rate HR after the first class correction and the second class correction corr All were calculated with reference to ASME PTC 6 procedure for turbine performance test.
4. The method for correcting and calculating the power consumption of a condensate pump in the power consumption calculation of a thermal power generating unit plant according to claim 1, wherein the difference between the corrected heat consumption rate and the designed heat consumption rate of the turbine in the formula (2) is a correction factor f of the power consumption of the condensate pump 4 Calculation was performed using formula (6):
wherein: HR (HR) corr kJ/(kWh) is the turbine heat rate after the first class and the second class correction; HR (HR) d The heat rate kJ/(kWh) is designed for the turbine under test conditions.
5. The method for calculating the power consumption correction of the condensate pump in the power consumption calculation of the thermal power generating unit according to claim 4, wherein the influence coefficient k of the turbine exhaust pressure on the turbine heat consumption rate in the formula (6) is obtained by checking a back pressure versus heat consumption rate correction graph provided by a turbine manufacturer or by performing a turbine variable back pressure characteristic test.
6. The method for correcting and calculating the power consumption of the condensate pump in the power consumption calculation of the thermal power generating unit plant according to claim 1, wherein the correction factor f of the turbine exhaust pressure to the power consumption of the condensate pump in the formula (2) 5 The calculation is performed using formula (7):
wherein: p (P) b_t The pressure of the exhaust gas of the turbine is measured by kPa; p (P) b_d The pressure of the exhaust gas of the steam turbine is designed to be kPa; k is the influence coefficient of the steam turbine exhaust pressure on the steam turbine heat rate,%/kPa.
7. The method for correcting and calculating the power consumption of the condensate pump in the power consumption calculation of the thermal power generating unit plant according to claim 1, wherein the correction factor f of the turbine performance aging to the power consumption of the condensate pump in the formula (2) 6 The calculation is performed using equation (8):
wherein: m is the number of operation months from the first steam inlet of the steam turbine to the time before the test; b is the design output power of the steam turbine, MW; c is rated main steam pressure and MPa.
8. The method for correcting and calculating the power consumption of the condensate pump in the power consumption calculation of the thermal power generating unit plant according to claim 1, wherein the test flow Q of the condensate pump t The measurement is carried out on a condensate pipeline at the outlet of the condensate pump, and the flow measurement is carried out according to the ISO 5167 standard of measuring the flow of fluid filled with a circular tube by using a pore plate, a nozzle and a venturi tube.
9. The method for calculating the power consumption correction of the condensate pump in the power consumption calculation of a thermal power generating unit plant according to claim 1, wherein the correction term f is expressed in the formula (2) 1 、f 2 To have to correct the term, f 3 、f 4 、f 5 、f 6 Selected according to the purpose of the test.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017050207A1 (en) * | 2015-09-21 | 2017-03-30 | 华北电力科学研究院有限责任公司 | Method for analyzing energy efficiency of generator set |
| CN111666675A (en) * | 2020-06-02 | 2020-09-15 | 西安热工研究院有限公司 | Method for correcting and calculating thermal performance examination test of steam turbine with low-temperature economizer |
| CN113404559A (en) * | 2021-07-07 | 2021-09-17 | 西安热工研究院有限公司 | Running method of closed circulating water system of generator set based on environmental parameters |
| CN113719325A (en) * | 2021-09-18 | 2021-11-30 | 西安热工研究院有限公司 | Improvement method for variable back pressure characteristic test of steam turbine |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017050207A1 (en) * | 2015-09-21 | 2017-03-30 | 华北电力科学研究院有限责任公司 | Method for analyzing energy efficiency of generator set |
| CN111666675A (en) * | 2020-06-02 | 2020-09-15 | 西安热工研究院有限公司 | Method for correcting and calculating thermal performance examination test of steam turbine with low-temperature economizer |
| CN113404559A (en) * | 2021-07-07 | 2021-09-17 | 西安热工研究院有限公司 | Running method of closed circulating water system of generator set based on environmental parameters |
| CN113719325A (en) * | 2021-09-18 | 2021-11-30 | 西安热工研究院有限公司 | Improvement method for variable back pressure characteristic test of steam turbine |
Non-Patent Citations (1)
| Title |
|---|
| 热耗率试验真空修正方法探讨;石永锋;常浩;曹玺彬;倪定;;华电技术;20100525(05);全文 * |
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