CN111537256A - Method and system for analyzing reason for unqualified AGC (automatic gain control) performance of thermal generator set - Google Patents
Method and system for analyzing reason for unqualified AGC (automatic gain control) performance of thermal generator set Download PDFInfo
- Publication number
- CN111537256A CN111537256A CN202010442605.1A CN202010442605A CN111537256A CN 111537256 A CN111537256 A CN 111537256A CN 202010442605 A CN202010442605 A CN 202010442605A CN 111537256 A CN111537256 A CN 111537256A
- Authority
- CN
- China
- Prior art keywords
- agc
- coal
- steam turbine
- real
- performance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
Abstract
The invention discloses a method for analyzing reasons for unqualified AGC (automatic gain control) performance of a thermal generator set, which comprises the following steps of: acquiring real-time signal data of a steam turbine set running state parameter, a coal feeder set running state parameter and an AGC running state parameter in a generator set; analyzing the real-time signal data by using criteria corresponding to a plurality of preset reasons for the substandard AGC performance, and determining the substandard AGC performance reasons according to the analysis result; wherein the criteria include a first related criterion related to the steam turbine unit operating state parameter and a second related criterion related to the coal feeder unit operating state parameter. The invention can enable operation and maintenance personnel to quickly determine the reason why the AGC performance does not reach the standard, and optimize the control parameters and the operation mode in time, thereby quickly recovering the AGC performance. The invention also discloses a system for analyzing the reason that the AGC performance of the thermal generator set does not reach the standard, and the system has the beneficial effects as described above.
Description
Technical Field
The invention relates to the technical field of thermal power generation, in particular to a method for analyzing reasons for unqualified AGC (automatic gain control) performance of a thermal generator set. The invention also relates to a system for analyzing the reason that the AGC performance of the thermal generator set does not reach the standard.
Background
With the development of Chinese power technology, more and more power plants are put into use.
Thermal power generation is the main force of modern society power development, and under the big background of establishing harmonious society and developing circular economy, the thermal power technology development direction is mainly considering the influence of electric power on the environment and the influence on non-renewable energy. With the change of the structure of power Generation enterprises in China, the new energy power Generation enterprises occupy larger and larger proportions in the power grid, so that a thermal power plant is required to participate in power grid peak shaving and primary frequency modulation more, and the requirement on AGC (Automatic Generation Control) performance is higher and higher.
The AGC can enable the generator set to automatically adjust the generating capacity according to the scheduling instruction, and in the actual use process, the AGC performance is poor and cannot be adjusted in place due to faults of some functional equipment of the generator set. However, the generator set has a complex structure and numerous parts, mainly including a steam turbine set and a coal feeder set, and different faults may cause poor AGC performance.
In order to improve the AGC performance, the reason for the unqualified AGC performance needs to be accurately judged in time. In the prior art, reason analysis is generally carried out manually by maintainers, and abnormal searching is carried out by checking data, curves and the like of various devices so as to gradually clear out reasons of performance which do not reach the standard. However, due to the huge analysis workload, the numerous data and the dependence on manual experience for judgment, the analysis results of the same problem may be completely different, and a unified and standard judgment method is difficult to form, so that a maintainer is difficult to find the real reason that the AGC performance does not reach the standard.
Therefore, how to quickly and accurately find the reason why the AGC performance does not meet the standard is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to provide an analysis method for the AGC performance of a thermal generator set not reaching the standard, which can quickly and accurately find out the reason for the AGC performance not reaching the standard. The invention further aims to provide a system for analyzing the reason that the AGC performance of the thermal generator set does not reach the standard.
In order to solve the technical problem, the invention provides a method for analyzing reasons for the substandard AGC performance of a thermal generator set, which comprises the following steps:
acquiring real-time signal data of a steam turbine set running state parameter, a coal feeder set running state parameter and an AGC running state parameter in a generator set;
analyzing the real-time signal data by using criteria corresponding to a plurality of preset reasons for the substandard AGC performance, and determining the substandard AGC performance reasons according to the analysis result; wherein the criteria include a first related criterion related to the steam turbine unit operating state parameter and a second related criterion related to the coal feeder unit operating state parameter.
Preferably, the acquiring the real-time signal data specifically includes:
and acquiring the running state parameters of the steam turbine set, the running state parameters of the coal feeder set and the AGC running state parameters from the control system through a cable or wireless communication mode and the control system of the generator set.
Preferably, acquiring the real-time signal data further comprises:
downloading the running state parameters of the steam turbine set, the running state parameters of the coal feeder set and the AGC running state parameters which are stored in the current interval time period from the control system at intervals of preset interval time;
wherein the steam turbine set operating state parameters include: the method comprises the following steps of (1) carrying out real-time load, current value of main steam pressure, set value of the main steam pressure and main control instruction of the steam turbine set;
the running state parameters of the coal feeder set comprise: each coal feeder automatically inputs signals, the real-time coal amount and the real-time coal-electricity ratio of each coal feeder;
the AGC operation state parameters comprise: an AGC input signal, an AGC load instruction signal and an AGC adjusting speed set value.
Preferably, the first relevant criterion includes a slip pressure curve pressure setting bias ion criterion, and the slip pressure curve pressure setting bias ion criterion specifically is:
the difference between the AGC load instruction signal and the real-time load of the steam turbine set is greater than the single minimum load change value of the power grid AGC instruction; and
the product of the operation number of the coal feeders and the maximum coal feeding amount of a single coal feeder is larger than the product of the AGC instruction value and the real-time coal-electricity ratio; and
the main control instruction of the steam turbine set is larger than the main control value of the steam turbine set when the regulating valve of the steam turbine set enters the middle section of the non-linear region; and
the main steam pressure set point is less than or equal to the current value of the main steam pressure.
Preferably, the second correlation criterion comprises a coal feeder operation quantity shortage sub-criterion, a coal feeder operation quantity excess sub-criterion, a coal feeder intervention coal feeding quantity bias ion criterion and a coal feeding quality difference sub-criterion.
Preferably, the sub-criterion for shortage of the number of coal feeders in operation specifically includes:
the difference between the AGC load instruction signal and the real-time load of the steam turbine set is greater than the single minimum load change value of the power grid AGC instruction; and
the product of the operation number of the coal feeders and the maximum coal feeding amount of a single coal feeder is smaller than the product of the AGC instruction value and the real-time coal-electricity ratio; and
the product of the operation number of the coal feeders and the maximum coal feeding amount of a single coal feeder is smaller than the product of the sum of the real-time load of the steam turbine set and the single minimum load change value of the power grid AGC instruction and the real-time coal-electricity ratio; and
the main control instruction of the steam turbine set is larger than the main control value of the steam turbine set when the steam turbine regulating valve enters the middle section of the non-linear region.
Preferably, the sub-criterion for the excess of the running number of the coal feeders specifically includes:
the difference between the AGC load instruction signal and the real-time load of the steam turbine set is smaller than the single minimum load change value of the power grid AGC instruction; and
the product of the running number of the coal feeders and the minimum coal feeding amount of a single coal feeder is larger than the product of the AGC command value and the real-time coal-electricity ratio.
Preferably, the criterion of the coal feeder intervention coal feeding quantity bias ion specifically comprises:
the difference between the AGC load instruction signal and the real-time load of the steam turbine set is greater than the single minimum load change value of the power grid AGC instruction; and
the product of the operation number of the coal feeders and the maximum coal feeding amount of a single coal feeder is larger than the product of the AGC instruction value and the real-time coal-electricity ratio; and
the main control instruction of the steam turbine set is larger than the main control value of the steam turbine set when the steam turbine regulating valve enters the middle section of the non-linear region; and
the sum of the product of the number of the automatically operated coal feeders and the maximum coal feeding amount of a single coal feeder and the total coal feeding amount of the manually operated coal feeders is less than the product of the AGC instruction value and the real-time coal-electricity ratio; and
the main steam pressure set point is greater than the current main steam pressure.
Preferably, after determining the reason for the AGC performance not meeting the standard, the method further includes:
and recording and storing the reason why the AGC performance does not reach the standard and the corresponding running state parameters of the steam turbine set, the coal supply set and the AGC running state parameters.
The invention also provides a system for analyzing the reason that the AGC performance of the thermal generator set does not reach the standard, which comprises the following components:
the parameter acquisition module is used for acquiring real-time signal data of the steam turbine set running state parameters, the coal feeder set running state parameters and the AGC running state parameters in the generator set;
the reason analysis module is used for analyzing the real-time signal data by using criteria corresponding to a plurality of preset reasons for the unqualified AGC performance and determining the reasons for the unqualified AGC performance according to the analysis result; wherein the criteria include a first related criterion related to the steam turbine unit operating state parameter and a second related criterion related to the coal feeder unit operating state parameter.
The method mainly comprises two steps, wherein in the first step, real-time signal data related to steam turbine set operation state parameters, coal feeder set operation state parameters and AGC operation state parameters in a generator set are obtained firstly, then in the second step, the obtained real-time signal data are substituted into criteria corresponding to a plurality of preset AGC performance non-standard reasons for analysis and calculation, whether the real-time signal data meet the preset criteria or not is judged through the calculation result, and if one or a plurality of criteria are met, the fact that the AGC performance is not good can be determined to be caused by the AGC performance non-standard reasons corresponding to the part of criteria. The AGC system in the thermal power generating set is mainly related to the steam turbine set and the coal feeder set, so that the criterion mainly comprises a first related criterion related to the running state parameters of the steam turbine set and a second related criterion related to the running state parameters of the coal feeder set, namely, a certain running fault in the steam turbine set or a certain running fault in the coal feeder set can be specifically determined according to the analysis result of real-time signal data. Therefore, the method for analyzing the reason why the AGC performance of the thermal generator set does not reach the standard can enable maintainers to quickly determine the reason why the AGC performance does not reach the standard through the acquisition, analysis and calculation of the real-time signal data of the running state parameters of the steam turbine set, the running state parameters of the coal feeder set and the AGC running state parameters, and accurately implement the method on the running fault of the steam turbine set or the running fault of the coal feeder set, thereby timely carrying out maintenance operation and quickly recovering the AGC performance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flow chart of an embodiment of the present invention.
FIG. 2 is a block diagram of an embodiment of the present invention.
Wherein, in fig. 2:
the system comprises a parameter acquisition module-1, a reason analysis module-2 and a storage recording module-3.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating an embodiment of the present invention.
In a specific embodiment provided by the invention, the reason analysis method for the reason why the AGC performance of the thermal generator set does not reach the standard mainly comprises two steps, which are respectively as follows:
s1, acquiring real-time signal data of the steam turbine set running state parameters, the coal feeder set running state parameters and the AGC running state parameters in the generator set;
s2, analyzing the real-time signal data by using criteria corresponding to a plurality of preset reasons for the unqualified AGC performance, and determining the reasons for the unqualified AGC performance according to the analysis result; the criterion comprises a first relevant criterion related to the running state parameters of the steam turbine set and a second relevant criterion related to the running state parameters of the coal feeder set.
In the first step, considering that the operation performance of the AGC system is mainly related to a steam turbine set and a coal supply set in a generator set, the operation state parameters of the steam turbine set and the coal supply set can be obtained firstly, and meanwhile, the operation state parameters of the AGC system are also required to be obtained.
Then, in the second step, the obtained real-time signal data is substituted into the criteria corresponding to a plurality of preset reasons for the substandard AGC performance to be analyzed and calculated, so as to judge whether the real-time signal data meets the preset criteria or not through the calculation result, and if one or more criteria are met, the fact that the substandard AGC performance is caused by the substandard AGC performance corresponding to the part of criteria can be determined.
The AGC system in the thermal power generating set is mainly related to the steam turbine set and the coal feeder set, so that the criterion mainly comprises a first related criterion related to the running state parameters of the steam turbine set and a second related criterion related to the running state parameters of the coal feeder set, namely, a certain running fault in the steam turbine set or a certain running fault in the coal feeder set can be specifically determined according to the analysis result of real-time signal data.
Therefore, according to the method for analyzing the AGC performance of the thermal generator set not reaching the standard, by obtaining, analyzing and calculating the real-time signal data of the steam turbine set operating state parameter, the coal feeder set operating state parameter, and the AGC operating state parameter, the maintainer can quickly determine the reason why the AGC performance does not reach the standard, and accurately implement the method on the operating fault of the steam turbine set or the coal feeder set, so as to timely perform the maintenance operation and quickly recover the AGC performance.
In order to conveniently obtain the running state parameters of the steam turbine set, the running state parameters of the coal supply set and the AGC running state parameters, the steam turbine set is connected with a control system of the generator set in a cable or wireless communication mode. Generally, the Control System mainly includes a DCS (Distributed Control System) System, an SIS System, an MIS System, or other signal connections, and acquires three required parameters from the Control System. Therefore, all important parameters of the thermal generator set are stored in the control system, and the required three parameters can be conveniently obtained from the control system.
In addition, in consideration of the fact that the transient real-time signal data may not accurately judge the fault reason, the fault reason can be judged only by using all data changes within a period of time. For example, the stored parameters can be downloaded from the control system every 5-10 s, so that the fault cause can be more accurately judged according to the parameter change in a certain time period, and the risk of poor AGC performance which may occur in the future can be predicted.
Specifically, the steam turbine set operation state parameters obtained from the control system mainly include a steam turbine set real-time load, a current value of a main steam pressure, a set value of the main steam pressure, a main steam turbine set control instruction and the like, the coal feeder set operation state parameters obtained from the control system mainly include automatic coal feeder input signals, real-time coal quantity of each coal feeder, a real-time coal-electricity ratio and the like, and the AGC operation state parameters obtained from the control system mainly include AGC input signals (i.e., instruction values of various adjustment quantities for AGC intervention adjustment), AGC load instruction signals, AGC adjustment rate set values and the like.
Generally, in this embodiment, the first relevant criterion mainly includes a slip pressure curve pressure-set bias ion criterion, and the slip pressure curve pressure-set bias ion criterion includes 4 specific judgment conditions, which are respectively: the difference between the AGC load instruction signal and the real-time load of the steam turbine set is larger than the single minimum load change value of a power grid AGC instruction, the product of the operation number of the coal feeders and the maximum coal feeding amount of a single coal feeder is larger than the product of the AGC instruction value and the real-time coal-electricity ratio, the main control instruction of the steam turbine set is larger than the main control value of the steam turbine set when the regulating valve of the steam turbine set enters the middle section of the nonlinear area, and the set value of the main steam pressure is smaller than or equal to the current value. The obtained real-time signal data and other known data are substituted into the 4 judgment conditions for calculation, so that whether the conditions are met can be judged, and only when the 4 conditions are met, the slip pressure curve pressure setting ion criterion is met, namely, the fact that the AGC performance is poor is that the steam turbine set has operation faults and the fault causes that the pressure setting value of the slip pressure curve deviates from a normal value.
Wherein, the coal-electricity ratio refers to the coal-fired quantity consumed by unit electric quantity, namely the total coal quantity consumed/generated electric quantity consumed by the generating set for generating electricity; the nonlinear region of the gate is as follows: the opening of the steam turbine is corresponding to the flow passing through the valve, and when the opening of the large opening is large enough, the change of the opening has almost no influence on the flow, namely the steam turbine enters a nonlinear area. For a particular valve, the nonlinear region is substantially stable, with a well-defined interval.
Similarly, in this embodiment, the second correlation criterion mainly includes a coal feeder operation quantity shortage sub-criterion, a coal feeder operation quantity excess sub-criterion, a coal feeder intervention coal feeding quantity bias ion criterion, and a coal feeding quality difference sub-criterion, which respectively indicate that the number of the coal feeders in the coal feeder unit in the automatic operation state is insufficient, the number of the coal feeders in the automatic operation state is excessive, the partial manual coal feeding quantity of the coal feeders in the manual state is improper, and the coal feeding quality is poor.
The sub-criterion for the shortage of the operating quantity of the coal feeders specifically comprises 4 judgment conditions which are respectively as follows: the difference between the AGC load instruction signal and the real-time load of the steam turbine set is larger than the single minimum load change value of the power grid AGC instruction, the product of the operation number of the coal feeders and the maximum coal feeding amount of a single coal feeder is smaller than the product of the AGC instruction value and the real-time coal-electricity ratio, the product of the operation number of the coal feeders and the maximum coal feeding amount of the single coal feeder is smaller than the product of the sum of the real-time load of the steam turbine set and the single minimum load change value of the power grid AGC instruction and the real-time coal-electricity ratio, and the main control instruction of the steam turbine set is larger than the main control value of the steam turbine set when. And substituting the acquired real-time signal data and other known data into the 4 judgment conditions for calculation, so as to judge whether the conditions are met, and only when the 4 conditions are met, the sub-criterion that the running number of the coal feeders is insufficient is satisfied.
The sub-criterion for the excess of the running number of the coal feeders specifically comprises 2 judging conditions which are respectively as follows: the difference between the AGC load instruction signal and the real-time load of the steam turbine set is smaller than the single minimum load change value of the power grid AGC instruction, and the product of the running number of the coal feeders and the minimum coal feeding amount of a single coal feeder is larger than the product of the AGC instruction value and the real-time coal-electricity ratio. And substituting the acquired real-time signal data and other known data into the 2 judgment conditions for calculation, namely judging whether the conditions are met, and only when the 2 conditions are met, determining that the running number of the coal feeder is over-rated.
The criterion of the coal feeder intervention coal feeding quantity bias ions specifically comprises 5 judgment conditions which are respectively as follows: the difference between the AGC load instruction signal and the real-time load of the steam turbine set is larger than the single minimum load change value of a power grid AGC instruction, the product of the operating quantity of the coal feeders and the maximum coal feeding quantity of a single coal feeder is larger than the product of the AGC instruction value and the real-time coal-electricity ratio, the main control instruction of the steam turbine set is larger than the main control value of the steam turbine set when a steam turbine valve enters the middle section of a non-linear area, the sum of the product of the quantity of the automatically operating coal feeders and the maximum coal feeding quantity of the single coal feeder and the total coal feeding quantity of the manually operating coal feeders is smaller than the product of the AGC instruction value and the real-time coal-electricity ratio, and. And substituting the acquired real-time signal data and other known data into the 5 judgment conditions for calculation, namely judging whether the conditions are met, and only when the 5 conditions are met, determining that the coal feeder is involved in the coal feeding quantity and the bias ion criterion is met.
It should be noted that each sub-criterion in the first correlation criterion and the second correlation criterion includes, in addition to a plurality of respective determination conditions, 2 common determination conditions, which are respectively: and automatically inputting by an AGC mode, and meeting the preset delay time (such as 60s delay and the like).
The coal feeding quality difference criterion only comprises 1 judgment condition, namely the real-time coal-electricity ratio is larger than the sum of the normal coal-electricity ratio and the allowable value.
In addition to this, a few cases may include fault cause criteria for the AGC itself, such as the adjustment rate setting being low, etc., only if the adjustment rate setting is less than the prescribed setting.
In another specific embodiment, after the reason for the AGC performance not meeting the standard is determined through analysis and calculation, the recording and storing operation can be continued, that is, the determined reason for the AGC performance not meeting the standard and the steam turbine set operation state parameter, the coal feeder set operation state parameter, and the AGC operation state parameter corresponding to the reason are recorded and stored. By the arrangement, when the same steam turbine set running state parameters, coal feeder set running state parameters and AGC running state parameters continue to appear in the future, the reason why the AGC performance does not reach the standard can be quickly matched according to the stored records, and the fault reason is the same as the fault reason before with high probability.
Fig. 2 is a block diagram of an embodiment of the present invention, as shown in fig. 2.
The embodiment also provides an analysis system for the performance of the AGC of the thermal generator set, which mainly comprises a parameter acquisition module 1 and a reason analysis module 2. The parameter acquisition module 1 is mainly used for acquiring real-time signal data of steam turbine set running state parameters, coal feeder set running state parameters and AGC running state parameters in a generator set, and the reason analysis module 2 is mainly used for analyzing the real-time signal data by using criteria corresponding to a plurality of preset AGC performance non-standard reasons and determining the AGC performance non-standard reasons according to an analysis result; the criterion comprises a first relevant criterion related to the running state parameters of the steam turbine set and a second relevant criterion related to the running state parameters of the coal feeder set.
In addition, the embodiment further includes a storage recording module 3, which is mainly used for recording the reason why the determined AGC performance does not reach the standard and the corresponding parameter, so as to perform fast matching in the future.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A thermal generator set AGC performance substandard reason analysis method is characterized by comprising the following steps:
acquiring real-time signal data of a steam turbine set running state parameter, a coal feeder set running state parameter and an AGC running state parameter in a generator set;
analyzing the real-time signal data by using criteria corresponding to a plurality of preset reasons for the substandard AGC performance, and determining the substandard AGC performance reasons according to the analysis result; wherein the criteria include a first related criterion related to the steam turbine unit operating state parameter and a second related criterion related to the coal feeder unit operating state parameter.
2. The method for analyzing the reason why the AGC performance of the thermal generator set does not reach the standard according to claim 1, wherein the obtaining the real-time signal data specifically includes:
and acquiring the running state parameters of the steam turbine set, the running state parameters of the coal feeder set and the AGC running state parameters from the control system through a cable or wireless communication mode and the control system of the generator set.
3. The method of analyzing the reason for substandard AGC performance of a thermal generator set according to claim 2, wherein obtaining the real-time signal data further comprises:
downloading the running state parameters of the steam turbine set, the running state parameters of the coal feeder set and the AGC running state parameters which are stored in the current interval time period from the control system at intervals of preset interval time;
wherein the steam turbine set operating state parameters include: the method comprises the following steps of (1) carrying out real-time load, current value of main steam pressure, set value of the main steam pressure and main control instruction of the steam turbine set;
the running state parameters of the coal feeder set comprise: each coal feeder automatically inputs signals, the real-time coal amount and the real-time coal-electricity ratio of each coal feeder;
the AGC operation state parameters comprise: an AGC input signal, an AGC load instruction signal and an AGC adjusting speed set value.
4. The method for analyzing the reason for the substandard AGC performance of the thermal generator set according to claim 3, wherein the first related criterion comprises a slip pressure curve pressure set bias ion criterion, and the slip pressure curve pressure set bias ion criterion is specifically as follows:
the difference between the AGC load instruction signal and the real-time load of the steam turbine set is greater than the single minimum load change value of the power grid AGC instruction; and
the product of the operation number of the coal feeders and the maximum coal feeding amount of a single coal feeder is larger than the product of the AGC instruction value and the real-time coal-electricity ratio; and
the main control instruction of the steam turbine set is larger than the main control value of the steam turbine set when the regulating valve of the steam turbine set enters the middle section of the non-linear region; and
the main steam pressure set point is less than or equal to the current value of the main steam pressure.
5. The method for analyzing the reason why the AGC performance of the thermal generator set does not reach the standard according to claim 4, wherein the second correlation criterion comprises a coal feeder operation number shortage sub-criterion, a coal feeder operation number excess sub-criterion, a coal feeder intervention coal feeding quantity bias ion criterion and a coal feeding quality difference sub-criterion.
6. The method for analyzing the reason why the AGC performance of the thermal generator set does not reach the standard according to claim 5, wherein the sub-criterion for the running number of the coal feeders specifically comprises:
the difference between the AGC load instruction signal and the real-time load of the steam turbine set is greater than the single minimum load change value of the power grid AGC instruction; and
the product of the operation number of the coal feeders and the maximum coal feeding amount of a single coal feeder is smaller than the product of the AGC instruction value and the real-time coal-electricity ratio; and
the product of the operation number of the coal feeders and the maximum coal feeding amount of a single coal feeder is smaller than the product of the sum of the real-time load of the steam turbine set and the single minimum load change value of the power grid AGC instruction and the real-time coal-electricity ratio; and
the main control instruction of the steam turbine set is larger than the main control value of the steam turbine set when the steam turbine regulating valve enters the middle section of the non-linear region.
7. The method for analyzing the reason why the AGC performance of the thermal generator set does not meet the standard according to claim 6, wherein the sub-criterion of the excess of the running number of the coal feeders specifically comprises the following steps:
the difference between the AGC load instruction signal and the real-time load of the steam turbine set is smaller than the single minimum load change value of the power grid AGC instruction; and
the product of the running number of the coal feeders and the minimum coal feeding amount of a single coal feeder is larger than the product of the AGC command value and the real-time coal-electricity ratio.
8. The method for analyzing the reason why the AGC performance of the thermal generator set does not reach the standard according to claim 7, wherein the criterion of the quantity of the coal fed by the coal feeder to be inserted into the coal feeding machine and the bias ions specifically comprises the following steps:
the difference between the AGC load instruction signal and the real-time load of the steam turbine set is greater than the single minimum load change value of the power grid AGC instruction; and
the product of the operation number of the coal feeders and the maximum coal feeding amount of a single coal feeder is larger than the product of the AGC instruction value and the real-time coal-electricity ratio; and
the main control instruction of the steam turbine set is larger than the main control value of the steam turbine set when the steam turbine regulating valve enters the middle section of the non-linear region; and
the sum of the product of the number of the automatically operated coal feeders and the maximum coal feeding amount of a single coal feeder and the total coal feeding amount of the manually operated coal feeders is less than the product of the AGC instruction value and the real-time coal-electricity ratio; and
the main steam pressure set point is greater than the current main steam pressure.
9. The method for analyzing the reason for the substandard AGC performance of the thermal generator set according to any one of claims 1 to 8, wherein after determining the reason for the substandard AGC performance, the method further comprises:
and recording and storing the reason why the AGC performance does not reach the standard and the corresponding running state parameters of the steam turbine set, the coal supply set and the AGC running state parameters.
10. The utility model provides a thermal generator set AGC performance reason analytic system not up to standard which characterized in that includes:
the parameter acquisition module is used for acquiring real-time signal data of the steam turbine set running state parameters, the coal feeder set running state parameters and the AGC running state parameters in the generator set;
the reason analysis module is used for analyzing the real-time signal data by using criteria corresponding to a plurality of preset reasons for the unqualified AGC performance and determining the reasons for the unqualified AGC performance according to the analysis result; wherein the criteria include a first related criterion related to the steam turbine unit operating state parameter and a second related criterion related to the coal feeder unit operating state parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010442605.1A CN111537256B (en) | 2020-05-22 | 2020-05-22 | Method and system for analyzing reason for unqualified AGC (automatic gain control) performance of thermal generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010442605.1A CN111537256B (en) | 2020-05-22 | 2020-05-22 | Method and system for analyzing reason for unqualified AGC (automatic gain control) performance of thermal generator set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111537256A true CN111537256A (en) | 2020-08-14 |
| CN111537256B CN111537256B (en) | 2022-06-14 |
Family
ID=71978088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010442605.1A Active CN111537256B (en) | 2020-05-22 | 2020-05-22 | Method and system for analyzing reason for unqualified AGC (automatic gain control) performance of thermal generator set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111537256B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112330189A (en) * | 2020-11-19 | 2021-02-05 | 贵溪发电有限责任公司 | Thermal power generating unit AGC dynamic characteristic evaluation method based on test information |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070038335A1 (en) * | 2005-07-22 | 2007-02-15 | Mcintyre Timothy J | Real Power Regulation for the Utility Power Grid Via Responsive Loads |
| KR100964297B1 (en) * | 2009-12-15 | 2010-06-16 | 한국전력거래소 | An automatic generation control and generation scheduling system |
| CN202453059U (en) * | 2012-03-03 | 2012-09-26 | 国投曲靖发电有限公司 | Acquisition and data processing system for coal feed quantity of coal feeder |
| CN106597138A (en) * | 2015-10-16 | 2017-04-26 | 中国大唐集团科学技术研究院有限公司西北分公司 | Generator set AGC test evaluation method |
| CN107218086A (en) * | 2017-07-28 | 2017-09-29 | 华能平凉发电有限责任公司 | Steam turbine and its sliding pressure curve correcting method and system based on load capacity |
| CN107862449A (en) * | 2017-10-31 | 2018-03-30 | 合肥天鹰高科技有限公司 | A kind of power plant AGC adjusts checking system |
| WO2018082359A1 (en) * | 2016-11-02 | 2018-05-11 | 南京南瑞继保电气有限公司 | Group-control-based automatic generation control method for power system |
| CN110518640A (en) * | 2019-09-05 | 2019-11-29 | 华北电力科学研究院有限责任公司 | Fired power generating unit load responding method for evaluating state and device |
| CN110658721A (en) * | 2019-10-09 | 2020-01-07 | 中国能源建设集团华中电力试验研究院有限公司 | Self-adaptive pre-coal-feeding method and system applied to AGC-R mode of thermal power generating unit |
| CN111142377A (en) * | 2019-12-23 | 2020-05-12 | 山东电力工程咨询院有限公司 | Fuel quantity feedforward control method of coordinated control system considering operation state of coal mill |
-
2020
- 2020-05-22 CN CN202010442605.1A patent/CN111537256B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070038335A1 (en) * | 2005-07-22 | 2007-02-15 | Mcintyre Timothy J | Real Power Regulation for the Utility Power Grid Via Responsive Loads |
| KR100964297B1 (en) * | 2009-12-15 | 2010-06-16 | 한국전력거래소 | An automatic generation control and generation scheduling system |
| CN202453059U (en) * | 2012-03-03 | 2012-09-26 | 国投曲靖发电有限公司 | Acquisition and data processing system for coal feed quantity of coal feeder |
| CN106597138A (en) * | 2015-10-16 | 2017-04-26 | 中国大唐集团科学技术研究院有限公司西北分公司 | Generator set AGC test evaluation method |
| WO2018082359A1 (en) * | 2016-11-02 | 2018-05-11 | 南京南瑞继保电气有限公司 | Group-control-based automatic generation control method for power system |
| CN107218086A (en) * | 2017-07-28 | 2017-09-29 | 华能平凉发电有限责任公司 | Steam turbine and its sliding pressure curve correcting method and system based on load capacity |
| CN107862449A (en) * | 2017-10-31 | 2018-03-30 | 合肥天鹰高科技有限公司 | A kind of power plant AGC adjusts checking system |
| CN110518640A (en) * | 2019-09-05 | 2019-11-29 | 华北电力科学研究院有限责任公司 | Fired power generating unit load responding method for evaluating state and device |
| CN110658721A (en) * | 2019-10-09 | 2020-01-07 | 中国能源建设集团华中电力试验研究院有限公司 | Self-adaptive pre-coal-feeding method and system applied to AGC-R mode of thermal power generating unit |
| CN111142377A (en) * | 2019-12-23 | 2020-05-12 | 山东电力工程咨询院有限公司 | Fuel quantity feedforward control method of coordinated control system considering operation state of coal mill |
Non-Patent Citations (10)
| Title |
|---|
| JOHAN ROMERO MARTÍNEZ ET AL: "A Machine Learning based Tool for AGC Performance Evaluation", 《2019 FISE-IEEE/CIGRE CONFERENCE - LIVING THE ENERGY TRANSITION (FISE/CIGRE)》 * |
| S.K. JOSHI ET AL: "A modern heuristic optimization method for AGC performance assessment at a power plant level", 《8TH INTERNATIONAL CONFERENCE ON ADVANCES IN POWER SYSTEM CONTROL, OPERATION AND MANAGEMENT (APSCOM 2009)》 * |
| ZOU BIN ET AL: "A New Evaluation Method for AGC Units ’Performance", 《IEEE/PES TRANSMISSION AND DISTRIBUTION CONFERENCE AND EXHIBITION: ASIA AND PACIFIC》 * |
| 向婷婷等: "评价机组AGC调节性能新方法", 《电网与清洁能源》 * |
| 姚诸香等: "AGC机组辅助服务确定性指标及应用", 《华中电力》 * |
| 孟祥荣等: "机组AGC系统常见问题分析及处理", 《HTTPS://WWW.DOCIN.COM/P-104194927.HTML》 * |
| 段南，李国胜: "影响火电机组AGC投运指标的若干问题及对策", 《华北电力技术》 * |
| 王当珍等: "影响 AGC 综合指标的因素分析", 《山东电力技术》 * |
| 马斌等: "AGC机组性能指标及考核补偿计算方法", 《河北电力技术》 * |
| 龚陈雄等: "AGC机组辅助服务考核与补偿评估方法", 《电力系统及其自动化学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112330189A (en) * | 2020-11-19 | 2021-02-05 | 贵溪发电有限责任公司 | Thermal power generating unit AGC dynamic characteristic evaluation method based on test information |
| CN112330189B (en) * | 2020-11-19 | 2024-05-07 | 贵溪发电有限责任公司 | Thermal power generating unit AGC dynamic characteristic evaluation method based on test information |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111537256B (en) | 2022-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102412575B (en) | Simulation evaluation method for configuration scheme of safe automatic device of transmitting-end power grid high-frequency cutting machine | |
| CN103746408A (en) | AGC (Automatic Generation Control) coordination control method of large-scale wind power | |
| CN108173261B (en) | New energy grid-connected active high-reliability automatic control system | |
| CN111412025B (en) | Method and system for monitoring state of high-side system of steam turbine | |
| CN109412210B (en) | Fine adjustment method for active power of wind turbine generator | |
| CN110021942B (en) | DCS-based frequency modulation control method | |
| CN115224746A (en) | Multi-scene cluster coordination control method, device and system for offshore wind power | |
| CN104283222A (en) | Regional power grid reactive voltage control system | |
| CN107947239A (en) | Automatic power generation control method based on power variation and high speed generator terminal power measurement | |
| CN111537256B (en) | Method and system for analyzing reason for unqualified AGC (automatic gain control) performance of thermal generator set | |
| US11936186B2 (en) | Method and apparatus for evaluating a degree of frequency regulation urgency of a generator set, power system, and storage medium | |
| CN112821426A (en) | System and method for optimizing load distribution and AGC quick response of thermal power plant | |
| CN116128241A (en) | Intelligent power supply system | |
| CN117318069A (en) | Power supply system fault self-healing method and system | |
| CN110429645B (en) | Photovoltaic power station active power change rate control method, system and storage medium | |
| CN111313466A (en) | Sending-end power grid AGC optimization regulation and control method and system based on wind power priority regulation | |
| CN110854852A (en) | Method for configuring key parameters of AGC (automatic gain control) master station in high-proportion hydropower region | |
| CN109340038B (en) | Power gradual change fault judgment method based on continuous slope change threshold judgment | |
| CN114696370A (en) | Primary frequency modulation wind power cluster control system, method and device | |
| CN115118002A (en) | Mass low-voltage distributed new energy regulation and control method, device, equipment and storage medium | |
| CN104319779A (en) | Regional power grid reactive voltage control method | |
| CN109687525B (en) | Method and device for automatic off-grid control of hydropower microgrid | |
| CN111668880A (en) | Generator set coordination control device and method based on regional power grid stability control system | |
| CN111579987A (en) | Large-frequency-difference remote disturbance testing system for thermal generator set | |
| CN110417064A (en) | Regulations speed dynamic regulation method and device based on the active ability monitoring of AGC unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |