CN107918822A - A kind of method assessed in fortune nuclear power plant steam turbine output hoisting power - Google Patents
A kind of method assessed in fortune nuclear power plant steam turbine output hoisting power Download PDFInfo
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- CN107918822A CN107918822A CN201710931501.5A CN201710931501A CN107918822A CN 107918822 A CN107918822 A CN 107918822A CN 201710931501 A CN201710931501 A CN 201710931501A CN 107918822 A CN107918822 A CN 107918822A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004458 analytical method Methods 0.000 claims abstract description 10
- 238000012986 modification Methods 0.000 claims abstract description 4
- 230000004048 modification Effects 0.000 claims abstract description 4
- 230000035772 mutation Effects 0.000 claims abstract description 4
- 230000003247 decreasing effect Effects 0.000 claims description 5
- 238000004804 winding Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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Abstract
The present invention provides a kind of method assessed in fortune nuclear power plant steam turbine output hoisting power, including：Step S1, sets steam turbine output hoisting power；Step S2, contributes according to the steam turbine output hoisting power and steam turbine of the setting and lifts principle, estimates the change of multiple key parameters of the steam generator lifted involved by principle and steam turbine when realizing the output hoisting power；Step S3, the condition that need to be met according to other key parameters involved by lifting principle described in the key parameter change mutation analysis that step S2 is estimated；Step S4, whether the value for the other specification for judging to be calculated according to power plant's actual operating data meets the condition of step S3 analyses, if it is judged that it is yes, then show that power plant's actual motion state meets the output hoisting power requirement, if it is judged that it is steam turbine output hoisting power no, then that return to step S1 modifications are set.The present invention can assess steam turbine output winding level in real time, and timeliness is extremely strong.
Description
Technical field
The present invention relates to nuclear power plant's nuclear reactor art field, more particularly to a kind of assessment to contribute in fortune nuclear power plant steam turbine and carry
The method of the ability of liter.
Background technology
Reactor power raising is the big event in fortune nuclear power generating sets transformation, can increase generated energy, improve economy,
It is to maintain long-term high-efficiency and economic and runs most important means.Reactor power raising is limited by several factors, for primary Ioops core
Island, it depends primarily upon the conservative allowance of power plant design consideration at initial stage；For secondary circuit conventional island, Steam Turbine is that key is set
Standby, its capacity directly determines the size of electromotive power output.
At present, evaluation is lifted if to do Steam Turbine and contribute, it is necessary to by power plant's operation data and need hoisting power size
Feed back to steam turbine manufacturer, producer by demonstration in detail, can just draw steam turbine contribute lifting whether feasible conclusion.This
One process is related to substantial amounts of data iteration and department is linked up, lengthy and tedious and time-consuming.
The content of the invention
The technical problems to be solved by the invention are, there is provided one kind assessment is in fortune nuclear power plant steam turbine output hoisting power
Method, steam turbine output winding level can be assessed in real time, timeliness is extremely strong.
A kind of method assessed in fortune nuclear power plant steam turbine output hoisting power provided by the invention, it may include：
Step S1, sets steam turbine output hoisting power, wherein, the hoisting power is less than or equal to the steam turbine
Valve wide open is contributed；
Step S2, contributes according to the steam turbine output hoisting power and steam turbine of the setting and lifts principle, estimate realization
Multiple key parameters of steam generator and the steam turbine during output hoisting power involved by the lifting principle
Change；
Step S3, according to the steaming involved by lifting principle described in the key parameter change mutation analysis that step S2 is estimated
The condition that other key parameters of vapour generator and the steam turbine need to meet；
Step S4, judges according to the steam generator and steam turbine that power plant's actual operating data is calculated
Whether the value of other specification meets the condition of step S3 analyses, if it is judged that being yes, then shows power plant's actual motion shape
State meets the output hoisting power requirement, if it is judged that being no, then the steam turbine of return to step S1 modifications setting is contributed
Hoisting power.
Wherein, the steam turbine contributes lifting principle including by opening big septum valve, reducing choke pressure drop, improving vapour
Expander inlet pressure, so as to increase the steam flow by steam turbine.
Wherein, multiple key parameters described in the step S2 include steam generator outlet pressure, turbine inlet the
First class pressure, steam turbine are through-flow steam；
The steam generator involved by lifting principle when realizing the output hoisting power is estimated in the step S2
Change with multiple key parameters of the steam turbine includes：
Estimate when realizing the output hoisting power, the decreasing value of the steam generator outlet pressure, the steamer enters
The mouth lift-off value of the first stage pressure and the value added of the through-flow steam of the steam turbine.
Wherein, it is high to include turbine inlet during 100%FP Power operations for other key parameters described in the step S3
Press control valve opening X%；
The step S3 specifically may include：
According to the decreasing value of the step S2 steam generator outlet pressure estimated, first stage pressure of steamer entrance
Lift-off value and the through-flow steam of the steam turbine value added, turbine inlet is high when analyzing the 100%FP Power operations
The condition that pressure control valve opening X% need to meet.
Wherein, the output hoisting power is represented with percent increments.
Wherein, in the step S1, steam turbine output hoisting power is set as maximum reactor core hoisting power.
Steam turbine output winding level, timeliness can be assessed in real time by using the technical solution embodiment of the present invention as above
It is extremely strong.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
The assessment that Fig. 1 is the present invention is shown in the flow of method one embodiment of fortune nuclear power plant steam turbine output hoisting power
It is intended to.
Fig. 2 is the multiple key parameters for the steam generator and steam turbine estimated according to lifting hoisting power of contributing
Change curve.
Embodiment
The explanation of following embodiment is refer to the attached drawing, can be to the specific embodiment implemented to the example present invention.
The assessment that Fig. 1 is the present invention is shown in the flow of method one embodiment of fortune nuclear power plant steam turbine output hoisting power
It is intended to.As shown in Figure 1, the method for the present invention may include：
Step S1, sets steam turbine output hoisting power, wherein, the hoisting power is less than or equal to the steam turbine
Valve wide open is contributed.
In certain embodiments, in step S1, steam turbine output hoisting power is set as maximum reactor core hoisting power.
Step S2, contributes according to the steam turbine output hoisting power and steam turbine of the setting and lifts principle, estimate realization
Multiple key parameters of steam generator and the steam turbine during output hoisting power involved by the lifting principle
Change.
In certain embodiments, the steam turbine contributes lifting principle including by opening big septum valve, reducing throttling
Pressure drop, improves turbine inlet pressure, so as to increase the steam flow by steam turbine.Therefore, it is the multiple in step s 2
Key parameter, which includes steam generator outlet pressure, the first stage pressure of turbine inlet, steam turbine is through-flow steam, and step S2, to be had
When body realizes the output hoisting power for estimating, the decreasing value of the steam generator outlet pressure, the steamer entrance
The value added of the lift-off value of first stage pressure and the through-flow steam of the steam turbine.
For example, in the embodiment of fig. 2, analyze and steam by taking steam turbine output electrical power lifting 1.6% i.e. P1=1.6% as an example
The evolution process of vapour generator and steam turbine operation parameter.The change of several key parameters is obtained by analysis：SG outlet pressures
0.04MPa, turbine inlet first order pressure rise 0.06MPa are reduced, turbine inlet high voltage adjusting valve opening needs to increase, vapour
Steam increase by 1.7% that turbine is through-flow..
Step S3, according to the steaming involved by lifting principle described in the key parameter change mutation analysis that step S2 is estimated
The condition that other key parameters of vapour generator and the steam turbine need to meet.
Still by taking the steam turbine output electrical power lifting 1.6% i.e. P1=1.6% of Fig. 2 as an example, in step s3 to 100%FP
The condition that turbine inlet high voltage adjusting valve opening X% meets during Power operation is analyzed.Analytical procedure is as follows：
△ P-1 ＞ (△ P- △ P1) * 1.0172+ △ P2, wherein：
—△P：SG outlets and turbine inlet pressure difference under 100%FP
—△P-1：SG outlets and turbine inlet pressure difference under 101.6%FP
—△P1：Choke pressure drop under 100%FP valve site apertures
—△P2：Choke pressure drop=1.7bar under 100% aperture of valve
Continue to be derived from：
△ P1 ＞ (0.04* △ P+2.7)/1.04, wherein：
—△P：SG outlets and turbine inlet pressure difference under 100%FP
—△P1：Choke pressure drop under 100%FP valve site apertures
According to steam turbine output Principles of Regulation and valve opening and the relation of choke pressure drop, can continue to be derived from：
X% ＜ Xlimit%
- X%：100%FP valve site apertures
- Xlimit%：(0.04* △ P+2.7)/1.04 correspond to aperture
—△P：SG outlets and turbine inlet pressure difference under 100%FP
" turbine inlet is high when X% ＜ Xlimit% " are 100%FP Power operations before steam turbine output lifts 1.6%
The condition that pressure control valve opening X% need to meet.
Step S4, judges according to the steam generator and steam turbine that power plant's actual operating data is calculated
Whether the value of other specification meets the condition of step S3 analyses, if it is judged that being yes, then shows power plant's actual motion shape
State meets the output hoisting power requirement, if it is judged that being no, then the steam turbine of return to step S1 modifications setting is contributed
Hoisting power.
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly
Enclose, therefore equivalent variations made according to the claims of the present invention, it is still within the scope of the present invention.
Claims (6)
- A kind of 1. method assessed in fortune nuclear power plant steam turbine output hoisting power, it is characterised in that including：Step S1, sets steam turbine output hoisting power, wherein, the hoisting power is less than or equal to the valve of the steam turbine Standard-sized sheet is contributed；Step S2, contributes according to the steam turbine output hoisting power and steam turbine of the setting and lifts principle, estimate described in realization The change of multiple key parameters of steam generator and the steam turbine during output hoisting power involved by the lifting principle；Step S3, according to the steam hair involved by lifting principle described in the key parameter change mutation analysis that step S2 is estimated The condition that other key parameters of raw device and the steam turbine need to meet；Step S4, judges according to the steam generator and steam turbine that power plant's actual operating data is calculated other Whether the value of parameter meets the condition of step S3 analyses, if it is judged that being yes, then shows that power plant's actual motion state expires The foot output hoisting power requirement, if it is judged that being no, the then steam turbine output lifting of return to step S1 modifications setting Ability.
- 2. assessment according to claim 1 is in the method for fortune nuclear power plant steam turbine output hoisting power, it is characterised in that institute Stating steam turbine output lifting principle is included by opening big septum valve, and reduction choke pressure drop, improves turbine inlet pressure, from And increase the steam flow by steam turbine.
- 3. assessment according to claim 2 is in the method for fortune nuclear power plant steam turbine output hoisting power, it is characterised in that institute Stating multiple key parameters described in step S2 includes steam generator outlet pressure, the first stage pressure of turbine inlet, steam turbine Through-flow steam；Steam generator when realizing the output hoisting power involved by the lifting principle and institute are estimated in the step S2 Stating the change of multiple key parameters of steam turbine includes：Estimate when realizing the output hoisting power, the decreasing value of the steam generator outlet pressure, the steamer entrance The value added of the lift-off value of first class pressure and the through-flow steam of the steam turbine.
- 4. assessment according to claim 3 is in the method for fortune nuclear power plant steam turbine output hoisting power, it is characterised in that institute Stating other key parameters described in step S3 includes turbine inlet high voltage adjusting valve opening X% during 100%FP Power operations；The step S3 specifically may include：According to the decreasing value of the step S2 steam generator outlet pressure estimated, first stage pressure of turbine inlet The value added of lift-off value and the through-flow steam of the steam turbine, turbine inlet high pressure when analyzing the 100%FP Power operations The condition that control valve opening X% need to meet.
- 5. assessment according to any one of claim 1-4 is in the method for fortune nuclear power plant steam turbine output hoisting power, its It is characterized in that, the output hoisting power is represented with percent increments.
- 6. assessment according to any one of claim 1-4 is in the method for fortune nuclear power plant steam turbine output hoisting power, its It is characterized in that, in the step S1, sets steam turbine output hoisting power as maximum reactor core hoisting power.
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|---|---|---|---|
| CN201710931501.5A CN107918822B (en) | 2017-10-09 | 2017-10-09 | Method for evaluating output lifting capacity of steam turbine in nuclear power plant |
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| CN201710931501.5A CN107918822B (en) | 2017-10-09 | 2017-10-09 | Method for evaluating output lifting capacity of steam turbine in nuclear power plant |
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| CN107918822B CN107918822B (en) | 2021-09-24 |
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