CN118274313A - Intelligent adjustment and distribution control system and method for steam temperature of generator set - Google Patents
Intelligent adjustment and distribution control system and method for steam temperature of generator set Download PDFInfo
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 70
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000002347 injection Methods 0.000 claims abstract description 23
- 239000007924 injection Substances 0.000 claims abstract description 23
- 239000007921 spray Substances 0.000 claims abstract description 21
- 239000000446 fuel Substances 0.000 claims abstract description 14
- 230000001960 triggered effect Effects 0.000 claims abstract description 13
- 230000002159 abnormal effect Effects 0.000 claims abstract description 7
- 230000008859 change Effects 0.000 claims abstract description 6
- 238000005507 spraying Methods 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 claims description 3
- 230000004069 differentiation Effects 0.000 claims 1
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- 238000004134 energy conservation Methods 0.000 description 2
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- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- 238000003303 reheating Methods 0.000 description 1
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Abstract
The invention relates to a system and a method for intelligently adjusting and distributing steam temperature of a generator set, wherein the system comprises a first switching module, a second switching module, a main fuel tripping module, a subtracting module, a tracking module, a first function module, a second function module, a multiplying module, a first constant module, a first switching module, a first adding module, a non-module and the like; the method utilizes real-time change of the temperature after the secondary temperature reduction and reduction valve and corresponding set values of the secondary temperature reduction main temperature regulation output, the main steam temperature rate and the main steam temperature at the outlet of the final superheater of the boiler to carry out comprehensive regulation control so as to dynamically regulate the temperature reduction water injection regulating valve of the secondary superheater of the boiler, wherein the state is an automatic control state; when auxiliary machine fault load reduction or main fuel tripping occurs, the abnormal fault working condition is adopted, the 'FceF' end of the manual operator module is directly triggered, and the control instruction output of the boiler secondary superheater temperature-reducing spray regulating valve is directly changed into '0', so that the secondary superheater temperature-reducing spray regulating valve is closed, and the safety of a unit is ensured; when the manual cutting condition is changed to 1, the FceM end of the manual operator module is directly triggered, and the secondary superheater temperature-reducing spray regulating valve is directly switched from an automatic control state to a manual control state, wherein the opening degree of the secondary superheater temperature-reducing spray regulating valve is controlled by a manual control instruction of an operator.
Description
Technical Field
The invention belongs to the field of intelligent control of generating sets, and particularly relates to an intelligent steam temperature adjusting and distributing control system and method of a generating set.
Background
At present, a secondary desuperheater of a generator set is arranged on a main steam pipeline at an inlet of a final-stage superheater, and a boiler secondary superheater temperature-reducing water-spraying regulating valve mainly plays a role in micro-regulating steam temperature. When operators monitor the boiler, the steam temperature required by the unit under the operating condition is lower than the outlet temperature value of the boiler, and then the steam temperature is reduced by using a boiler secondary superheater temperature-reducing spray regulating valve, so that the current required operating parameters of the unit are ensured. However, due to the characteristics of large hysteresis, strong time delay and the like commonly existing in the steam temperature, operators need to frequently adjust the boiler secondary superheater temperature-reducing water-spraying regulating valve to ensure the safe operation of the unit, and the operation workload of a monitoring disc is increased. There is a need to develop a system and a method for intelligently adjusting and distributing the steam temperature of a generator set, so as to solve the problems in a control manner of dynamic adaptation and self-matching.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a system and a method for intelligently adjusting and distributing the steam temperature of a generator set.
The invention is realized by adopting the following technical scheme:
The intelligent steam temperature adjusting and distributing control system for the generator set comprises a first switching module, a second switching module, a main fuel tripping, subtracting module, a tracking module, a first function module, a second function module, a multiplying module, a first constant module, a first switching module, a first adding module, a second adding module, a third switching module, a second switching module, a third switching module, a PID regulating module, a first or module, a first delay module, a second delay module, a pulse module, a second or module, a manual operator module and a non-module;
The analog input end of the temperature after the second-stage temperature reduction valve is connected to the Pv end of the PID regulating module; the analog input end of the temperature after the second-stage temperature reduction valve and the analog input end of the temperature output of the second-stage temperature reduction main regulator are connected to a subtraction module, and the output end of the subtraction module is connected to the T end of the tracking module; the analog input signal of the main steam temperature rate is connected to a first function module, the analog input signal of the main steam temperature at the outlet of the final superheater of the boiler is connected to a second function module, the output end of the first function module and the output end of the second function module are both connected to a multiplication module, the output end of the multiplication module is connected to the 'Pv 1' end of a first switching module, a first constant module is connected to the 'Pv 2' end of the first switching module, and the first switching module is connected to the 'S' end of the first switching module; the analog input end of the second-stage temperature reduction main temperature regulation output and the output end of the first switching module are connected to the first adding module; the output end of the first adding module and the output end of the first adding module are both connected to the second adding module, and the output end of the second adding module is connected to the Sp end of the PID regulating module;
The output end OUT of the manual operator module is connected to the end Pv1 of the third switching module, the analog input signal of the second-stage temperature reduction output is connected to the end Pv2 of the third switching module, and the output end NotA of the manual operator module is connected to the end S of the third switching module; the output end of the third switching module is connected to the Trak end of the PID regulating module; the output end 'NotA' of the manual operator module and the second switching module are connected to a first or module, and the output end of the first or module is connected to the 'SelT' end of the PID regulating module;
The output end of the PID regulating module is connected to the Pv2 end of the second switching module, and the third switching module is connected to the S end of the second switching module; the output end of the second switching module is connected to the PV end of the manual operator module; the analog input signal fed back by the valve position of the boiler secondary superheater temperature-reducing water-spraying regulating valve is connected with the FB end of the manual operator module; the switching value signal of auxiliary machine fault load reduction is connected to a first delay module, the output end of the first delay module is connected to a pulse module, the switching value signal of main fuel tripping is connected to a second delay module, the output end of the pulse module and the output end of the second delay module are both connected to a second or module, and the output end of the second or module is connected to the 'FceF' end of a manual operator module; the switching value input signal of the manual cutting condition is connected to the 'FceM' end of the manual operator module; the output end OUT of the manual operation device module is connected to a control instruction of the boiler secondary superheater temperature-reducing water injection regulating valve, the output end NotA of the manual operation device module is connected to the non-module, and the output end of the non-module is connected to the secondary temperature-reducing automatic valve.
The invention is further improved in that the output end NotA of the manual operator module is connected to the S end of the tracking module, when the S end of the tracking module is 1, the output is the value of the T end of the tracking module, and when the S end is 0, the output is the built-in preset value of the tracking module.
The invention is further improved in that when the output of the first switching module is 1, the output of the first switching module is a Pv1 end, and when the output of the first switching module is 0, the output of the first switching module is a Pv2 end.
The invention is further improved in that when the output of the output end 'NotA' of the manual operation device module is 1, the output of the third switching module is Pv1, and when the output of the output end 'NotA' of the manual operation device module is 0, the output of the third switching module is Pv 2.
The invention is further improved in that when the output of the third switching module is 1, the output of the second switching module is a Pv1 end, and when the output of the third switching module is 0, the output of the second switching module is a Pv2 end.
The intelligent steam temperature adjusting and distributing control method for the generator set is based on the intelligent steam temperature adjusting and distributing control system for the generator set, and comprises the following steps:
The method comprises the steps of utilizing real-time change of temperature after a secondary temperature reduction and reduction valve and set values respectively corresponding to primary temperature output, primary steam temperature rate and primary steam temperature at an outlet of a final superheater of a boiler to carry out comprehensive adjustment control, and dynamically adjusting a secondary superheater temperature reduction water injection adjusting valve of the boiler, wherein the state is an automatic control state; when auxiliary machine fault load reduction or main fuel tripping occurs, the abnormal fault working condition is adopted, the 'FceF' end of the manual operator module is directly triggered, and the control instruction output of the boiler secondary superheater temperature-reducing spray regulating valve is directly changed into '0', so that the secondary superheater temperature-reducing spray regulating valve is closed, and the safety of a unit is ensured; when the manual cutting condition is changed to 1, the FceM end of the manual operator module is directly triggered, and the secondary superheater temperature-reducing spray regulating valve is directly switched from an automatic control state to a manual control state, wherein the opening degree of the secondary superheater temperature-reducing spray regulating valve is controlled by a manual control instruction of an operator.
The invention further improves that the intelligent steam temperature model outputs and utilizes the running and variable working condition data set in the historical library, establishes the intelligent steam temperature model based on a multi-variable generalized prediction method, finds the linear relation between the dynamic inertia of the secondary temperature reduction and adjustment valve and the multi-variable coupling of the steam temperature so as to realize the advanced prediction of the main and reheating steam temperatures, and timely and accurately adjusts according to the inertia of the boiler and the inertia time of the pulverizing system.
When the second switching module is put into '1', the operator selects the steam temperature intelligent model to output, at the moment, the secondary superheater temperature-reducing water injection regulating valve is put into an automatic control state, the opening degree of the secondary superheater temperature-reducing water injection regulating valve is kept consistent with the steam temperature intelligent model to output, at the moment, the secondary superheater temperature-reducing water injection regulating valve is subjected to dynamic intelligent adjustment under the control of the steam temperature intelligent model to output, the valve is subjected to predictive adjustment control of main and reheat steam temperatures of an adaptation unit in advance, and the safety, the efficiency and the stability of the unit are ensured.
When auxiliary machine fault load reduction or main fuel tripping occurs, the invention directly triggers the 'FceF' end of the manual operator module under abnormal fault working condition, and the control command output of the secondary superheater temperature-reducing water injection regulating valve is directly changed into '0', so as to close the secondary superheater temperature-reducing water injection regulating valve, thereby ensuring the safety of a unit; when the manual cutting condition is changed to 1, the FceM end of the manual operator module is directly triggered, and the secondary superheater temperature-reducing spray regulating valve is directly switched from an automatic control state to a manual control state, wherein the opening degree of the secondary superheater temperature-reducing spray regulating valve is controlled by a manual control instruction of an operator.
The invention has at least the following beneficial technical effects:
The intelligent regulation and distribution control method for the steam temperature of the generator set realizes the accurate control of the full-flow tracking self-adaptive model of equipment energy conservation and steam temperature indexes, takes the intelligent control of the steam temperature of the generator set with comprehensive cooperation, environmental protection and energy conservation and intelligent operation as main characteristics as a research core, and is used for large-scale construction and application of an intelligent power plant.
Drawings
FIG. 1 is a schematic diagram of a method for intelligently adjusting and distributing the steam temperature of a generator set.
Fig. 2 is a graph of the regulating and controlling effect of the boiler secondary superheater temperature-reducing water injection regulating valve A.
Fig. 3 is a graph of the regulating and controlling effect of the boiler secondary superheater temperature-reducing water injection regulating valve B.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
The invention provides an intelligent regulation and distribution control system for the steam temperature of a generator set, wherein the figure 1 is a logic schematic diagram of a control method for the intelligent regulation and distribution of the steam temperature of the generator set, and the system specifically comprises the following steps: the post-secondary desuperheating valve temperature 001, the secondary desuperheating main temperature output 002, the main steam temperature rate 003, the boiler final superheater outlet main steam temperature 004, the first switching module 005, the secondary desuperheating output 006, the second switching module 007, the boiler secondary desuperheating water injection regulating valve position feedback 008, the auxiliary machine fault load 009, the main fuel trip 010, the manual cutting condition 011, the subtracting module 012, the tracking module 013, the first function module 014, the second function module 015, the multiplying module 016, the first constant module 017, the first switching module 018, the first adding module 019, the second adding module 020, the steam temperature intelligent model output 021, the third switching module 022, the second switching module 023, the third switching module 024, the PID regulating module 025, the first or module 026, the first delay module 027, the second delay module 028, the pulse module 029, the second or module 030, the manual operator module 031, the non-module 032, the boiler secondary desuperheating module 033 and the second desuperheating valve 034.
The control strategy logic diagram of fig. 1 includes: the analog input end of the temperature 001 after the second-stage temperature reduction valve is connected to the 'Pv' end of the PID regulating module 025; the analog input end of the temperature 001 after the secondary temperature reduction valve and the analog input end of the temperature 002 of the secondary temperature reduction main regulator are connected to a subtraction module 012, the output end of the subtraction module 012 is connected to the 'T' end of the tracking module 013, the output end 'NotA' of the manual operator module 031 is connected to the 'S' end of the tracking module 013, when the 'S' end of the tracking module 013 is 1, the output is the value of the 'T' end of the tracking module 013, and when the 'S' end is 0, the output is the built-in preset value of the tracking module 013; the analog input signal of the main steam temperature rate 003 is connected to the first function module 014, the analog input signal of the main steam temperature 004 at the outlet of the final superheater of the boiler is connected to the second function module 015, the output end of the first function module 014 and the output end of the second function module 015 are both connected to the multiplication module 016, the output end of the multiplication module 016 is connected to the "Pv1" end of the first switching module 018, the first constant module 017 is connected to the "Pv2" end of the first switching module 018, the first switching module 005 is connected to the "S" end of the first switching module 018, when the output of the first switching module 005 is "1", the output of the first switching module 018 is the "Pv1" end, and when the output of the first switching module 005 is "0", the output of the first switching module 018 is the "Pv2" end; the analog input end of the second-stage temperature reduction main temperature adjustment output 002 and the output end of the first switching module 018 are both connected to the first addition module 019; the output end of the first addition module 019 and the output end of the first addition module 019 are both connected to a second addition module 020, and the output end of the second addition module 020 is connected to the "Sp" end of the PID regulation module 025;
The output end 'OUT' of the manual operator module 031 is connected to the 'Pv 1' end of the third switching module 024, the analog input signal of the second-stage temperature reduction output 006 is connected to the 'Pv 2' end of the third switching module 024, and the output end 'NotA' of the manual operator module 031 is connected to the 'S' end of the third switching module 024; when the output of the output end 'NotA' of the manual operation module 031 is '1', the output of the third switching module 024 is 'Pv 1' end, when the output of the output end 'NotA' of the manual operation module 031 is '0', the output of the third switching module 024 is 'Pv 2' end, and the output end of the third switching module 024 is connected to the 'Trak' end of the PID adjusting module 025; both the output "NotA" of the manual operator module 031 and the second switching module 007 are connected to the first or module 026, the output of the first or module 026 being connected to the "SelT" end of the PID adjustment module 025;
The steam temperature intelligent model output 021 is connected to the "Pv1" end of the second switching module 023, the output end "OUT" of the PID regulating module 025 is connected to the "Pv2" end of the second switching module 023, the third switching module 022 is connected to the "S" end of the second switching module 023, when the output of the third switching module 022 is "1", the output of the second switching module 023 is the "Pv1" end, and when the output of the third switching module 022 is "0", the output of the second switching module 023 is the "Pv2" end; the output end of the second switching module 023 is connected to the 'PV' end of the manual operator module 031; the analog input signal of valve position feedback 008 of the boiler secondary superheater temperature-reducing water injection regulating valve is connected with the FB end of the manual operator module 031; the switching value signal of the auxiliary machine fault load reduction 009 is connected to a first delay module 027, the output end of the first delay module 027 is connected to a pulse module 029, the switching value signal of the main fuel trip 010 is connected to a second delay module 028, the output end of the pulse module 029 and the output end of the second delay module 028 are both connected to a second or module 030, and the output end of the second or module 030 is connected to the 'FceF' end of a manual operator module 031; the switching value input signal of the manual cutting condition 011 is connected to the 'FceM' end of the manual operator module 031; the output end 'OUT' of the manual operator module 031 is connected to the boiler secondary superheater temperature-reducing water injection regulating valve control command 033, the output end 'NotA' of the manual operator module 031 is connected to the non-module 032, and the output end of the non-module 032 is connected to the secondary temperature-reducing automatic 034.
The specific control functions of fig. 1 are as follows:
Control mode 1: the method comprises the steps that the real-time change of the temperature after the secondary temperature reduction and reduction valve and the set values respectively corresponding to the primary temperature output of the secondary temperature reduction and reduction valve, the primary steam temperature rate and the primary steam temperature at the outlet of the final superheater of the boiler are utilized to carry out comprehensive adjustment control, so that the secondary temperature reduction and water injection adjusting valve of the boiler is dynamically adjusted, the state is an automatic control state, and an operator does not need to manually control the secondary temperature reduction Wen Zhudiao valve to keep the steam temperature of a unit stable; when auxiliary machine fault load reduction 009 or main fuel trip 010 occurs, if the abnormal fault working condition is present, the 'FceF' end of the manual operator module 031 is directly triggered, and the output of a control instruction 033 of the boiler secondary superheater temperature-reducing water injection regulating valve is directly changed into '0', so that the secondary superheater temperature-reducing water injection regulating valve is closed, and the safety of a unit is ensured; when the manual cutting condition 011 is changed into 1, the FceM end of the manual operator module 031 is directly triggered, and at the moment, the secondary superheater temperature-reducing spray regulating valve is directly switched from an automatic control state to a manual control state, and the opening degree of the secondary superheater temperature-reducing spray regulating valve is controlled by a manual control instruction of an operator.
Control mode 2:
The traditional PID control and univariate generalized predictive control are difficult to adapt to the control requirements of slight change, multivariable, large delay and the like of a boiler secondary temperature reduction water control system, the timing and quantitative control cannot be realized due to the secondary temperature reduction water adjustment capability in the unit operation process, the industrial problems of over-limit or over-low temperature of the metal wall of a superheater or a reheater are frequently encountered, and the aim of accurate control is difficult to realize. The intelligent steam temperature model provided by the invention can effectively improve the accuracy and dynamic adaptability of steam temperature prediction, and provides a basis for taking intervention and adjustment measures in advance and avoiding over-limit wall temperature or over-low steam temperature.
The intelligent steam temperature model output 021 utilizes the running and variable working condition data set in the historical library, establishes an intelligent steam temperature model based on a multivariable generalized prediction method, finds the linear relation between the dynamic inertia of the secondary temperature reduction and adjustment valve and the multivariable coupling of the steam temperature so as to realize the advanced prediction of the main and reheat steam temperatures, and makes timely and accurate adjustment according to the inertia of the boiler and the inertia time of the pulverizing system so as to thoroughly solve the problem that the conventional PID adjustment and tracking of the secondary temperature reduction water is difficult due to the rapid change of the steam temperature.
When the operator inputs the second switching module 013 as 1, the steam temperature intelligent model output 012 is selected, at the moment, the secondary superheater temperature-reducing water injection regulating valve is put into an automatic control state, the opening degree of the secondary superheater temperature-reducing water injection regulating valve is kept consistent with the steam temperature intelligent model output 012, at the moment, the secondary superheater temperature-reducing water injection regulating valve is controlled by the steam temperature intelligent model output 012 to carry out dynamic intelligent adjustment, so that the valve is subjected to predictive adjustment control of main and reheat steam temperatures of an adaptation unit in advance, and the safety, the efficiency and the stability of the unit are ensured; when auxiliary machine fault load reduction 009 or main fuel trip 010 occurs, if the abnormal fault working condition is present, the 'FceF' end of the manual operator module 024 is directly triggered, and the output of the control command 026 of the secondary superheater temperature-reducing spray regulating valve is directly changed into '0', so that the secondary superheater temperature-reducing spray regulating valve is closed, and the safety of a unit is ensured; when the manual cutting condition 011 is changed into 1, the FceM end of the manual operator module 024 is directly triggered, and the secondary superheater temperature-reducing spray regulating valve is directly switched from an automatic control state to a manual control state, wherein the opening degree of the secondary superheater temperature-reducing spray regulating valve is controlled by a manual control instruction of an operator.
Examples
The invention is actually deployed and verified on site. As shown in fig. 2 and 3, the boiler secondary superheater desuperheating water injection regulating valve a and the boiler secondary superheater desuperheating water injection regulating valve B are both controlled to be stable during the period of use. From 14:30 to 16 at 2024, 4, 9: and in 00 hours, the opening of the regulating valve is increased, and the steam temperature at the outlet of the attemperator is in a stable descending trend, so that hidden danger caused by temperature rise is effectively inhibited, and the safe temperature control of the steam temperature is ensured.
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. The intelligent regulation and distribution control system for the steam temperature of the generator set is characterized by comprising a first switching module (005), a second switching module (007), a main fuel trip (010), a subtraction module (012), a tracking module (013), a first function module (014), a second function module (015), a multiplication module (016), a first constant module (017), a first switching module (018), a first addition module (019), a second addition module (020), a third switching module (022), a second switching module (023), a third switching module (024), a PID (proportion integration differentiation) regulation module (025), a first or module (026), a first delay module (027), a second delay module (028), a pulse module (029), a second or module (030), a manual operator module (031) and a non-module (032);
The analog input end of the temperature (001) after the second-stage temperature reduction valve is connected to the Pv end of the PID regulating module (025); the analog input end of the temperature (001) behind the second-stage temperature reduction valve and the analog input end of the temperature output (002) of the second-stage temperature reduction main regulator are connected to a subtraction module (012), and the output end of the subtraction module (012) is connected to the T end of a tracking module (013); an analog input signal of the main steam temperature rate (003) is connected to a first function module (014), an analog input signal of the main steam temperature (004) at the outlet of the final superheater of the boiler is connected to a second function module (015), an output end of the first function module (014) and an output end of the second function module (015) are connected to a multiplication module (016), an output end of the multiplication module (016) is connected to a 'Pv 1' end of a first switching module (018), a first constant module (017) is connected to a 'Pv 2' end of the first switching module (018), and the first switching module (005) is connected to an 'S' end of the first switching module (018); the analog input end of the secondary temperature reduction main temperature regulation output (002) and the output end of the first switching module (018) are connected to the first adding module (019); the output end of the first adding module (019) and the output end of the first adding module (019) are both connected to a second adding module (020), and the output end of the second adding module (020) is connected to the Sp end of the PID regulating module (025);
The output end OUT of the manual operator module (031) is connected to the end Pv1 of the third switching module (024), the analog input signal of the second-stage temperature reduction output (006) is connected to the end Pv2 of the third switching module (024), and the output end NotA of the manual operator module (031) is connected to the end S of the third switching module (024); the output end of the third switching module (024) is connected to the Trak end of the PID regulating module (025); both the output end 'NotA' of the manual operator module (031) and the second switching module (007) are connected to the first or module (026), and the output end of the first or module (026) is connected to the 'SelT' end of the PID regulating module (025);
The output end 'OUT' of the PID regulating module (025) is connected to the 'Pv 2' end of the second switching module (023), and the third switching module (022) is connected to the 'S' end of the second switching module (023); the output end of the second switching module (023) is connected to the 'PV' end of the manual operator module (031); an analog input signal of valve position feedback (008) of a boiler secondary superheater temperature-reducing water injection regulating valve is connected with the 'FB' end of a manual operator module (031); the switching value signal of the auxiliary machine fault load reduction module (009) is connected to a first delay module (027), the output end of the first delay module (027) is connected to a pulse module (029), the switching value signal of the main fuel trip (010) is connected to a second delay module (028), the output end of the pulse module (029) and the output end of the second delay module (028) are both connected to a second or module (030), and the output end of the second or module (030) is connected to the 'FceF' end of the manual operator module (031); the switching value input signal of the manual cutting condition (011) is connected to the 'FceM' end of the manual operator module (031); the output end OUT of the manual operator module (031) is connected to a boiler secondary superheater temperature-reducing water-spraying regulating valve control instruction (033), the output end NotA of the manual operator module (031) is connected to a non-module (032), and the output end of the non-module (032) is connected to a secondary temperature-reducing automatic (034).
2. The intelligent steam temperature adjusting and distributing control system of a generator set according to claim 1, wherein an output end NotA of the manual operator module (031) is connected to an end S of the tracking module (013), when the end S of the tracking module (013) is 1, the output is a value of the end T of the tracking module (013), and when the end S is 0, the output is a preset value of the tracking module (013).
3. The intelligent regulation and distribution control system for steam temperature of a generator set according to claim 1, wherein when the output of the first switching module (005) is "1", the output of the first switching module (018) is "Pv1", and when the output of the first switching module (005) is "0", the output of the first switching module (018) is "Pv 2".
4. The intelligent regulation and distribution control system for steam temperature of generator set according to claim 1, wherein when the output of the output end "NotA" of the manual operation module (031) is "1", the output of the third switching module (024) is "Pv1" end, and when the output of the output end "NotA" of the manual operation module (031) is "0", the output of the third switching module (024) is "Pv2" end.
5. The intelligent steam temperature adjusting and distributing control system of a generator set according to claim 1, wherein when the output of the third switching module (022) is "1", the output of the second switching module (023) is "Pv1", and when the output of the third switching module (022) is "0", the output of the second switching module (023) is "Pv 2".
6. A method for controlling intelligent adjustment and distribution of steam temperature of a generator set, which is based on the system for controlling intelligent adjustment and distribution of steam temperature of a generator set according to any one of claims 1 to 5, comprising:
The method comprises the steps of utilizing real-time change of temperature after a secondary temperature reduction and reduction valve and set values respectively corresponding to primary temperature output, primary steam temperature rate and primary steam temperature at an outlet of a final superheater of a boiler to carry out comprehensive adjustment control, and dynamically adjusting a secondary superheater temperature reduction water injection adjusting valve of the boiler, wherein the state is an automatic control state; when auxiliary machine fault load reduction (009) or main fuel tripping (010) occurs, the abnormal fault working condition is adopted at the moment, the 'FceF' end of the manual operator module (031) is directly triggered, and the output of a control instruction (033) of a boiler secondary superheater temperature-reducing water-spraying regulating valve is directly changed into '0', so that the secondary superheater temperature-reducing water-spraying regulating valve is closed, and the safety of a unit is ensured; when the manual cutting condition (011) is changed into 1, the FceM end of the manual operator module (031) is directly triggered, and the secondary superheater temperature-reducing spray regulating valve is directly switched from an automatic control state to a manual control state at the moment, and the opening degree of the secondary superheater temperature-reducing spray regulating valve is controlled by a manual control instruction of an operator.
7. The intelligent regulation and distribution control method for steam temperature of generator set according to claim 6, characterized in that the intelligent model output (021) of steam temperature utilizes the running and variable working condition data set in the history base, based on the multivariable generalized prediction method, establishes the intelligent model of steam temperature, finds the linear relation of the dynamic inertia of the two-stage temperature-reducing regulating valve and the multivariable coupling of steam temperature, so as to realize the advanced prediction of main and reheat steam temperatures, and make timely and accurate regulation according to the inertia of boiler and the inertia time of pulverizing system.
8. The intelligent regulation and distribution control method for the steam temperature of the generator set according to claim 6 is characterized in that when an operator inputs a second switching module (013) to be 1, a steam temperature intelligent model output (012) is selected, at the moment, the opening of a secondary superheater temperature-reducing water-spraying regulating valve is kept consistent with the steam temperature intelligent model output (012), at the moment, the secondary superheater temperature-reducing water-spraying regulating valve is dynamically and intelligently regulated under the control of the steam temperature intelligent model output (012), the predictive regulation control of the valve for adapting the main and reheat steam temperatures of the generator set in advance is realized, and the safety, the efficiency and the stability of the generator set are ensured.
9. The intelligent steam temperature adjusting and distributing control method for the generator set according to claim 8 is characterized in that when auxiliary machine fault load reduction (009) or main fuel tripping (010) occurs, an abnormal fault working condition is caused, a 'FceF' end of a manual operator module (024) is directly triggered, and the output of a control command (026) of a secondary superheater temperature-reducing water-spraying regulating valve is directly changed into '0', so that a secondary superheater temperature-reducing water-spraying regulating valve is closed, and the safety of the generator set is ensured; when the manual cutting condition (011) is changed into 1, the FceM end of the manual operator module (024) is directly triggered, and the secondary superheater temperature-reducing spray regulating valve is directly switched from an automatic control state to a manual control state, wherein the opening of the secondary superheater temperature-reducing spray regulating valve is controlled by a manual control instruction of an operator.
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