CN113312743A - Thermal performance analysis system of steam turbine - Google Patents
Thermal performance analysis system of steam turbine Download PDFInfo
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- CN113312743A CN113312743A CN202110347170.7A CN202110347170A CN113312743A CN 113312743 A CN113312743 A CN 113312743A CN 202110347170 A CN202110347170 A CN 202110347170A CN 113312743 A CN113312743 A CN 113312743A
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Abstract
The invention belongs to the field of operation analysis of a steam turbine of a thermal power plant, and particularly relates to a thermal performance analysis system of a steam turbine unit. The system comprises a data acquisition unit for acquiring field data and a data analysis unit for calculating; the field data includes: main steam pressure, temperature, reheat steam pressure temperature, etc.; the inlet steam pressure, temperature, etc. of the regenerative system; pressure, degree, etc. of the extraction system; pressure and temperature before and after the valve; adjusting post-stage pressure and temperature; the water amount in the unit system comprises the final water supply amount and the temperature reduction water amount of the unit; the data analysis unit is used for calculating the performance parameters of the steam turbine set by combining the field data; and the data analysis unit analyzes by comparing the actual value and the design value of the unit parameter.
Description
Technical Field
The invention belongs to the field of operation analysis of a steam turbine of a thermal power plant, and particularly relates to a thermal performance analysis module of a steam turbine unit.
Background
Energy conservation and consumption reduction are the key points for strengthening the macro regulation at present in China. Under the policy of national guidelines for energy conservation and emission reduction, each thermal power plant pays more and more attention to the energy conservation and consumption reduction work of the unit.
The thermal performance of the steam turbine set is analyzed, the steam inlet quantity and the steam inlet temperature of the steam turbine are intervened and regulated, and the heat consumption of the steam turbine can be reduced.
Disclosure of Invention
The invention provides a thermal performance analysis system of a steam turbine unit, which is realized by the following technical scheme: a thermal performance analysis module of a steam turbine set comprises a data acquisition unit for acquiring field data and a data analysis unit for calculating;
the field data includes:
main steam pressure, temperature, reheat steam pressure, temperature, etc.;
the inlet steam pressure, temperature, etc. of the regenerative system;
pressure, temperature, etc. of the extraction system;
pressure and temperature before and after the valve;
adjusting post-stage pressure and temperature;
the water amount in the unit system comprises the final water supply amount and the temperature reduction water amount of the unit;
the data analysis unit is used for calculating the performance parameters of the steam turbine set by combining the field data;
and the data analysis unit analyzes by comparing the actual value and the design value of the unit parameter.
Further, the data analysis unit calculates a value including: the system comprises a first-stage steam extraction amount, a second-stage steam extraction amount, a third-stage steam extraction amount, a fourth-stage steam extraction amount, a main steam amount, a reheat steam amount, a main steam enthalpy value, a reheat enthalpy value, a heat consumption rate, high-pressure cylinder efficiency, intermediate-pressure cylinder efficiency and the like.
Furthermore, the system also comprises a control unit, wherein the control unit corrects the parameters of the unit and the deviation heat rate of the regenerative system of the unit by adjusting the parameters of the unit; the unit parameters comprise main steam pressure, main steam temperature, reheating pressure loss and unit backpressure, and the unit heat regeneration system deviation comprises heat regeneration system pressure loss, heater end difference and desuperheating water flow.
The invention has the beneficial effects that: the pressure value in the thermodynamic system of the steam turbine is compared, the pressure value of each monitoring section can reflect the change condition of the flow area of the unit, and the pressure value is also a monitoring point for the safe operation of the pipeline and the heater. The pressure value of each monitoring section is an important numerical value for monitoring whether the unit normally operates, the deviation between the unit operation and the design value can be reflected through the comparison of the actual operation value and the design value, and data support can be provided for analyzing the unit condition.
The comparison of temperature values in a thermal system of the steam turbine and the temperature values of each monitoring section can reflect the change condition of a temperature field in the through flow of the unit and are also monitoring points for the safe operation of the pipeline and the heater. The temperature value of each monitoring section is an important numerical value for monitoring whether the unit normally operates, the deviation between the unit operation and the design value can be reflected through the comparison of the actual operation value and the design value, and data support can be provided for analyzing the unit condition.
The upper end difference and the lower end difference of the heater are important indexes reflecting the operation performance of the heater, and the heater can be correspondingly debugged according to the numerical value comparison, so that the economy of the heater is improved.
And is capable of directly reading: high pressure cylinder efficiency, intermediate pressure cylinder efficiency, low pressure cylinder efficiency, heat loss, condenser heat load, and the like.
Detailed Description
A thermal performance analysis module of a steam turbine set comprises a data acquisition unit for acquiring field data and a data analysis unit for calculating;
the field data includes:
main steam pressure, temperature, reheat steam pressure, temperature, etc.;
the inlet steam pressure, temperature, etc. of the regenerative system;
pressure, temperature, etc. of the extraction system;
the pressure and the temperature before and after the valve,
adjusting post-stage pressure and temperature;
the water amount in the unit system comprises the final water supply amount and the temperature reduction water amount of the unit;
the data analysis unit is used for calculating the performance parameters of the steam turbine set by combining the field data;
and the data analysis unit analyzes by comparing the actual value and the design value of the unit parameter.
Further, the data analysis unit calculates a value including: the system comprises a first-stage steam extraction amount, a second-stage steam extraction amount, a third-stage steam extraction amount, a fourth-stage steam extraction amount, a main steam amount, a reheat steam amount, a main steam enthalpy value, a reheat enthalpy value, a heat consumption rate, high-pressure cylinder efficiency, intermediate-pressure cylinder efficiency and the like.
Furthermore, the system also comprises a control unit, wherein the control unit corrects the parameters of the unit and the deviation heat rate of the regenerative system of the unit by adjusting the parameters of the unit; the unit parameters comprise main steam pressure, main steam temperature, reheating pressure loss and unit backpressure, and the unit heat regeneration system deviation comprises heat regeneration system pressure loss, heater end difference and desuperheating water flow.
Theoretical calculation of pressure parameters
The first column of design values in this table requires reading first the post-regulation stage pressure Ptj, and the other pressures are calculated from the relationship between Ptj and the thermal system design values in the enclosure.
The first column of design values in the table is that the unit power N (unit MW, three decimal places are reserved) needs to be read first, and other temperatures need to be calculated according to the relationship curve between N and the thermodynamic system design values in the accessories.
Steam turbine heat consumption calculation scheme
The heat consumption rate is [ [ steam turbine steam inlet flow rate x (new steam specific enthalpy-feed water specific enthalpy) + intermediate pressure cylinder reheated steam flow rate x (intermediate pressure cylinder reheated steam actual specific enthalpy-low pressure cylinder exhaust steam actual specific enthalpy) ]/[ electric power output by the generator
Calculation of first stage extraction
1) According to the first-stage water supply outlet pressure Pfwo1 and the first-stage water supply outlet temperature Tfw 1, the first-stage water supply outlet specific enthalpy Hfwo1, H fwo1 ═ H _ pt97(Pfwo1, Tfwo1) is calculated by using a steam table formula, wherein Pfwo1 and Tfwo1 are read according to field data of a power plant, such as Pfwo1 ═ 26.5, Tfwo1 ═ 279.7, Hfwo1 ═ 1228.3 is calculated
2) Calculating specific enthalpy of primary feedwater and feedwater Hfwi1, Hfwi1 ═ H _ pt97(Pfwi1, Tfwi1) by using a steam table formula according to primary feedwater and feedwater pressure Pfwi1 and primary feedwater and feedwater temperature Tfwi1, wherein Pfwi1 and Tfwi1 are read according to site data of a power plant, such as Pfwi1 ═ 28.5, Tfwi1 ═ 254.8, and Hfwi1 ═ 1109.5 is calculated
3) According to the first-stage extraction pressure Pex1 and the first-stage extraction temperature Tex1, the first-stage extraction specific enthalpy Hex1, Hex 1-H _ pt97(Pex1, Tex1) are formulated by using a steam table, wherein Pex1 and Tex1 are read according to field data of a power plant, for example Pex 1-6.425, Tex 1-360.1, and Hex 1-3064.0 are calculated
4) According to a first-stage steam extraction drainage pressure Pex1 and a first-stage steam extraction drainage temperature Tdw1, a first-stage steam extraction steam exhaust specific enthalpy Hdw1, Hdw 1-H _ pt97(Pex1, Tdw1) is formulated by using a steam table, wherein Pex1 and Tdw1 are read according to field data of a power plant, for example Pex 1-6.425, Tdw 1-260.3, and Hdw 1-1136.6 is calculated
5) According to the principle of energy balance, Gex1 is obtained according to Hfwo1, Hfwi1, Hex1 and Hdw1 and water supply amount Gfw
Two-stage extraction calculation
1) According to the secondary feed water outlet pressure Pfwo2 and the secondary feed water outlet temperature Tfw 2, the specific enthalpy of the secondary feed water outlet Hfwo2, Hfwo2 ═ H _ pt97(Pfwo2, Tfwo2) is calculated by using a steam table formula, wherein Pfwo2 and Tfwo2 are read according to field data of a power plant, such as Pfwo2 ═ 28.5, Tfwo2 ═ 254.8, and Hfwo2 ═ 1109.5 is calculated
2) According to the two-stage water feeding and water feeding pressure Pfwi2 and the two-stage water feeding and water feeding pressure Tfwi2, the specific enthalpy of the two-stage water feeding and water feeding is Hfwi2, Hfwi2 is H _ pt97(Pfwi2, Tfwi2) by utilizing a steam table formula, wherein Pfwi2 and Tfwi2 are read according to field data of a power plant, such as Pfwi2 is 29.5, Tfwi2 is 215.1, and Hfwi2 is 931.2
3) According to the two-stage extraction pressure Pex2 and the two-stage extraction temperature Tex2, the specific enthalpy Hex2, Hex 2-H _ pt97(Pex2, Tex2) of the two-stage extraction is formulated by using a steam table, wherein Pex2 and Tex2 are read according to field data of a power plant, such as Pex 2-4.429, Tex 2-312.4, and Hex 2-2983.2 is calculated
4) According to Pex2 and Tdw2, water steam table formula Hdw2, Hdw 2H _ pt97(Pex2, Tdw2) is utilized, wherein Pex2 and Tdw2 are read according to plant site data, such as Pex2 4.429, Tdw2 220.7, and Hdw2 946.9 is calculated
5) According to the principle of energy balance, Gex2 is obtained from Hfwo2, Hfwi2, Hex2, Hdw2, Gfw and Gex2
Calculation of main steam and reheat steam amount
The leakage Gvlk of the valve rod is 0.2 according to the design value
According to the relation curve of the steam leakage of the thermodynamic system, the regulating stage pressure Ptj in the field actual data is firstly read, the formula y is 1.7823x-1.2832, wherein x is Ptj, and Gbit y is calculated
High and medium pressure gap bridge steam leakage Gcs, according to a thermodynamic system steam leakage relation curve and a thermodynamic system steam leakage relation curve, firstly reading regulating stage pressure Ptj in field actual data, according to a formula y of 1.0702x + 0.2073, wherein x is Ptj, and calculating Gcs y
According to the relationship curve of the steam leakage amount of the thermodynamic system, firstly reading the regulating stage pressure Ptj in the field actual data according to the relationship curve of the steam leakage amount of the thermodynamic system, and calculating the Ghplk (y) which is equal to y according to the formula y which is 0.323x + 1.5406, wherein x is Ptj
The design value of the reheated desuperheating water Grhs is 0, and the actual input value is according to the field
The design value of the superheated desuperheating water Gshs is 0 according to the actual field input value
Gr＝G0-Gvlk-Gcs-Ghplk+Grhs
Derivation of G0 from Gfw, Gshs
G0＝Gfw+Grhs
Calculation of enthalpy of main steam and reheat enthalpy
1) According to P0, T0, using the steam table formula H0, H0-H _ pt97(P0, T0), where P0 and T0 are read from plant site data, such as P0-24.2, T0-566, calculating H0-3396.0
2) According to Pr, Tr, using the steam table formula Hr, Hr — H _ pt97(Pr, Tr), where Pr and Tr are read from the plant site data, e.g., Pr 3.986, Tr 566, Hr 3595.2 is calculated
3) According to Pex2 and Tex2, the equations Hex2, Hex 2H _ pt97(Pex2, Tex2) are used with the steam table, where Pex2 and Tex2 are read from the plant site data, such as Pex2 4.429, Tex2 312.4, and the calculation Hex2 2983.2
Three stage steam flow calculation
1) According to Pfwo3 and Tfwo3, the water steam table formula Hfwo3, Hfwo3 ═ H _ pt97(Pfwo3, Tfwo3) is utilized, wherein Pfwo3 and Tfwo3 are read according to plant site data, such as Pfwo3 ═ 29.5, Tfwo3 ═ 215.1, and Hfwo3 ═ 931.2 is calculated
2) According to Pfwi3 and Tfwi3, water steam table formulas Hfwi3, Hfwi3 ═ H _ pt97(Pfwi3, Tfwi3) are utilized, wherein Pfwi3 and Tfwi3 are read according to site data of the power plant, such as Pfwi3 ═ 30.5, Tfwi3 ═ 187.5, and Hfwi3 ═ 812.5 is calculated
3) According to Pex3 and Tex3, the equations Hex3, Hex 3H _ pt97(Pex3, Tex3) are used with steam tables, where Pex3 and Tex3 are read from plant site data, such as Pex3 2.177, Tex3 473.1, and the calculation Hex3 3406.1
4) According to Pex3 and Tdw3, water steam table formula Hdw3, Hdw 3H _ pt97(Pex3, Tdw3) is utilized, wherein Pex3 and Tdw3 are read according to plant site data, such as Pex3 2.177, Tdw3 193.1, and Hdw3 821.2 is calculated
5) From Gex1 and Gex2, Gdw2 ═ Gex1+ Gex2 was obtained, from which Gex1 ═ 123.79, Gex2 ═ 164.3 were calculated previously
6) According to the principle of energy balance, Gex3 is obtained from Hfwo3, Hfwi3, Hex3, Hdw3, Gfw and Gex3
Four-stage extraction steam quantity calculation
1) According to Pfwo4 and Tfwo4, the water steam table formula Hfwo4, Hfwo4 ═ H _ pt97(Pfwo4, Tfwo4) is utilized, wherein Pfwo4 and Tfwo4 are read according to plant site data, such as Pfwo4 ═ 30.5, Tfwo4 ═ 187.5, and Hfwo4 ═ 812.5 is calculated
2) The enthalpy rise delta Hfwb of the feed pump is valued according to the enthalpy rise curve of the feed pump, and the regulation stage pressure Ptj is firstly read according to field data, wherein y is-0.0189 x3+0.6757x2-5.2513x +25.132, where x is Ptj, and Δ Hfwb ═ y can be calculated
3) According to Pfwi4 and Tfwi4, water steam table formulas Hfwi4, Hfwi4 ═ H _ pt97(Pfwi4, Tfwi4) are utilized, wherein Pfwi4 and Tfwi4 are read according to site data of the power plant, such as Pfwi4 ═ 2.3, Tfwi4 ═ 136.9, and Hfwi4 ═ 576.8 is calculated
4) According to Pex4 and Tex4, the equations Hex4, Hex 4H _ pt97(Pex4, Tex4) are used with steam tables, where Pex4 and Tex4 are read from plant site data, such as Pex4 1.113, Tex4 375.2, and the calculation Hex4 3209.9
5) From Gex3 and Gdw2, Gdw 3-Gex 3+ Gdw2 was obtained, from which Gex 3-78.16, Gdw 2-288.09 were calculated
6) According to the principle of energy balance, Gex4 is obtained from Hfwo4, Hfwi4, Hex4, Gfw and Gex4
Gfw is the unit final feedwater volume, i.e., the volume of water to the boiler superheater inlet.
And Gcw is the final condensed water quantity of the unit, namely the water quantity from the outlet of the condensing pump to the deaerator.
Gfw＝Gcw+Gex4+Gdw3
High pressure cylinder efficiency calculation
1) According to P0 and T0, the formula H0, H0-H _ pt97(P0, T0) is utilized, wherein P0 and T0 are read according to the site data of the power plant, such as P0-24.2 and T0-566, and H0-3396.0 is calculated
2) According to the Pgp and Tgp, the formula Hgp, Hgp H _ pt97(Pgp, Tgp) is used, wherein Pgp and Tgp are read according to the field data of the power plant, for example, Pgp 4.429, Tgp 312.4, Hgp 2983.2 is calculated
3) According to P0 and H0, the steam table formula S0 is used, S0 is S _ pt97(P0, T0), where P0 and T0 are read according to plant site data, such as P0 is 24.2, T0 is 566, S0 is 6.266
4) According to Pgp and S0, the steam table formula Hgps, Hgps H _ ps97(Pgp, S0) is used, where Pgp is read from plant site data, e.g., Pgp 4.429, S0 6.266, Hgps 2929.45
Intermediate pressure cylinder efficiency calculation
1) Based on Pr and Tr, Hr — H _ pt97(Pr, Tr) is calculated using the steam table formula Hr, where Pr and Tr are read from plant site data, e.g., Pr — 3.986, Tr — 566, Hr — 3595.2
2) From Pzp and Tzp, using the steam table formula Hzp, Hzp H _ pt97(Pzp, Tzp), where Pzp and Tzp are read from plant site data, e.g., Pzp 0.564, Tzp 286.8, calculate Hzp 3035.7
3) According to Pr and Hr, the specific entropy Sr, Sr — S _ pt97(Pr, Tr) is used according to the formula of the steam table, where Pr and Tr are read according to the site data of the power plant, for example, Pr 3.986, Tr 566, Sr 7.281
4) According to Pzp and Sr, the formula of the steam table is used, Hzps, H _ ps97(Pzp, Sr), wherein Pzp is read according to the site data of the power plant, such as Pzp, 3.986, Sr, 7.281, Hgps, 3596.97
Claims (3)
1. A thermal performance analysis system of a steam turbine set is characterized by comprising a data acquisition unit for acquiring field data and a data analysis unit for calculating;
the field data includes:
main steam pressure, temperature, reheat steam pressure temperature, etc.;
the inlet steam pressure, temperature, etc. of the regenerative system;
pressure, temperature, etc. of the extraction system;
pressure and temperature before and after the valve;
adjusting post-stage pressure and temperature;
the water amount in the unit system comprises the final water supply amount and the temperature reduction water amount of the unit;
the data analysis unit is used for calculating the performance parameters of the steam turbine set by combining the field data;
and the data analysis unit analyzes by comparing the actual value and the design value of the unit parameter.
2. A steam turbine plant thermodynamic analysis system according to claim 1 wherein the data analysis unit calculated values include: the system comprises a first-stage steam extraction amount, a second-stage steam extraction amount, a third-stage steam extraction amount, a fourth-stage steam extraction amount, a main steam amount, a reheat steam amount, a main steam enthalpy value, a reheat enthalpy value, a heat consumption rate, high-pressure cylinder efficiency and intermediate-pressure cylinder efficiency.
3. The thermal performance analysis system of a steam turbine unit according to claim 1, further comprising a control unit, wherein the control unit corrects the thermal performance by adjusting unit parameters and a unit regenerative system deviation heat rate; the unit parameters comprise main steam pressure, main steam temperature, reheating pressure loss and unit backpressure, and the unit heat regeneration system deviation comprises heat regeneration system pressure loss, heater end difference and desuperheating water flow.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1928327A (en) * | 2006-05-12 | 2007-03-14 | 南京科远控制工程有限公司 | Digital electro-hydraulic regulating system for steam turbine |
| CN1952590A (en) * | 2006-11-10 | 2007-04-25 | 东北电力大学 | On-line monitoring method for variation of through-flow gap of steam turbine |
| CN103646176A (en) * | 2013-12-10 | 2014-03-19 | 国家电网公司 | Comprehensive calculation method for energy-saving effect after steam turbine steam seal modification |
| CN104896980A (en) * | 2015-07-01 | 2015-09-09 | 赵丽颖 | Plate heat exchanger and thermodynamic system comprising plate heat exchanger |
| CN207035886U (en) * | 2017-05-18 | 2018-02-23 | 华电电力科学研究院 | Small steam turbine rough vacuum automatic regulating system |
-
2021
- 2021-03-31 CN CN202110347170.7A patent/CN113312743A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1928327A (en) * | 2006-05-12 | 2007-03-14 | 南京科远控制工程有限公司 | Digital electro-hydraulic regulating system for steam turbine |
| CN1952590A (en) * | 2006-11-10 | 2007-04-25 | 东北电力大学 | On-line monitoring method for variation of through-flow gap of steam turbine |
| CN103646176A (en) * | 2013-12-10 | 2014-03-19 | 国家电网公司 | Comprehensive calculation method for energy-saving effect after steam turbine steam seal modification |
| CN104896980A (en) * | 2015-07-01 | 2015-09-09 | 赵丽颖 | Plate heat exchanger and thermodynamic system comprising plate heat exchanger |
| CN207035886U (en) * | 2017-05-18 | 2018-02-23 | 华电电力科学研究院 | Small steam turbine rough vacuum automatic regulating system |
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