CN113656145B - Script scheduling calculation method for AGC control device of hydropower station - Google Patents
Script scheduling calculation method for AGC control device of hydropower station Download PDFInfo
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- 238000013515 script Methods 0.000 title claims abstract description 236
- 238000004364 calculation method Methods 0.000 title claims abstract description 64
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- 230000004044 response Effects 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
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- 125000004122 cyclic group Chemical group 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45504—Abstract machines for programme code execution, e.g. Java virtual machine [JVM], interpreters, emulators
- G06F9/45508—Runtime interpretation or emulation, e g. emulator loops, bytecode interpretation
- G06F9/45512—Command shells
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/544—Buffers; Shared memory; Pipes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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Abstract
The invention discloses a hydropower station AGC control device script scheduling calculation method, which comprises the following steps: scheduling calculation is carried out on the script according to the script calculation strategy; judging whether the calculation result changes, if not, ending the calculation of the current script and scanning the next script; if yes, judging whether the current script has an associated script, if not, ending the calculation of the current script, and scanning the next script; if yes, all associated scripts of the current script are brought into the steps until all scripts in the script file and associated script scheduling calculation are completed. The invention can improve the response speed and the expandability of the AGC control device, improve the adjustment speed, the accuracy and the reliability of the hydropower AGC, and meet the requirements of a power grid on the hydropower frequency modulation and peak regulation capacity.
Description
Technical Field
The invention relates to a script scheduling calculation method for an AGC control device of a hydropower station, and belongs to the technical field of hydropower station automatic control.
Background
With the construction of intelligent power grids in China and the large-scale access of new energy sources with fluctuation and intermittence characteristics such as large-scale wind and light and the like to the power grids, the frequency modulation peak shaving and the absorption pressure of the power grids are huge, stricter frequency modulation peak shaving rate requirements are provided for hydropower, and the improvement of the hydropower AGC regulation rate, precision and accuracy has important significance for improving the flexibility of the power grids and ensuring the safe, stable and efficient operation of the power grids.
The traditional hydropower station AGC software generally operates on a computer monitoring system server and consists of a data acquisition module, a preprocessing module, a start-stop module, a load distribution module, an output processing module and the like, reads real-time data of the computer monitoring system and power grid load scheduling instructions in a cyclic timing execution mode, considers the operation limiting conditions of the hydropower station and the hydropower station unit, determines the operation number of the hydropower station unit, the combination of the operation units and the load distribution among the units on the premise of guaranteeing the safe operation of the hydropower station by taking economic operation as a principle, and meets the output requirement of a power grid on the hydropower station.
However, the traditional AGC software has high coupling degree with hydropower station monitoring system software and communication mode, complex field implementation, low program execution efficiency and slow response rate by adopting a cyclic timing execution mode, and can not meet the requirement of a power grid on quick frequency and peak regulation response of the hydropower station; in order to solve the problems, the application provides a hydropower station AGC control device script scheduling calculation method.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a hydropower station AGC control device script scheduling calculation method which can improve the response speed and expandability of an AGC control device, improve the hydropower AGC regulation speed, precision and reliability and meet the requirements of a power grid on hydropower frequency modulation peak shaving capacity.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
The invention provides a hydropower station AGC control device script scheduling calculation method, which comprises the following steps:
Scheduling calculation is carried out on the script according to the script calculation strategy;
Judging whether the calculation result changes, if not, ending the calculation of the current script and scanning the next script;
If yes, judging whether the current script has an associated script, if not, ending the calculation of the current script, and scanning the next script;
if yes, all associated scripts of the current script are brought into the steps until all scripts in the script file and associated script scheduling calculation are completed.
Preferably, the script file is generated based on visual editing of a UI interface of the AGC control device, and the edited script file is downloaded to the AGC control device, wherein the visual editing comprises script input, script checking and saving compiling.
Preferably, when the AGC control device is powered on and started, the downloaded script file is preloaded, all scripts are read into the shared memory, and a corresponding script calculation strategy is obtained based on calculation logic of each script.
Preferably, the logic of the script calculation comprises a timed execution comprising setting a timed execution cycle period and a trigger execution comprising setting a trigger source.
Preferably, the script calculation policy includes:
the timing execution script circularly triggers the scheduling calculation of the script file according to the set timing execution cycle period; the trigger execution script decides whether to trigger the dispatch calculation of the script file according to whether the state of the trigger source is changed.
Preferably, the judging whether the current script has the associated script includes searching the script associated with the current script according to the reference relation knowledge base.
Preferably, the obtaining of the reference relation knowledge base includes performing reference relation analysis on all scripts read into the shared memory to obtain reference relations among the scripts, and generating the reference relation knowledge base based on the reference relations.
Preferably, the analyzing the reference relation of all the scripts read into the shared memory includes:
analyzing all scripts to obtain script names, script input parameters and script output parameters;
Storing the script name and script input parameters as keys and values in a hash table mapin, and using the hash table mapin as the input parameter dataset { K 0＝V0,K1＝V1,…,Km＝Vm,…,Kn＝Vn }, wherein K m represents the script name, V m is a List [ x1, x2, xm, …, xn ] represents the script input parameter set, and xm represents the script input parameters;
Storing the script name and script output parameters as keys and values in a hash table mapout, and using the hash table mapout as an output parameter data set { K 0＝W0,K1＝W1,…,Km＝Wm,…,Kn＝Wn }, wherein K m represents the script name, W m is a List [ y1, y2, ym, …, yn ] represents the script output parameter set, ym represents the script output parameters;
Analyzing the input parameter data set and the output parameter data set to obtain reference relations of all scripts, forming a hash table maprelation by the reference relations, and taking the hash table maprelation as a reference relation knowledge base { K 0＝Z0,K1＝Z1,…,Km＝Zm,…,Kn＝Zn }, wherein K m represents the script names, Z m is a List [ Z1, Z2, zm, …, zn ] represents script name sets of all the referenced scripts, and zm represents script names of associated scripts.
Preferably, the analyzing the input parameter data set and the output parameter data set to obtain the reference relation of all scripts includes: if any script output parameter in the output parameter data set is any script input parameter in the input parameter data set, the script corresponding to the script input parameter is the script associated with the script corresponding to the script output parameter.
Compared with the prior art, the invention has the beneficial effects that:
according to the script scheduling calculation method for the hydropower station AGC control device, the script scheduling mechanism combining script triggering execution and timing execution is adopted, so that the response speed and expandability of the AGC control device are improved, the hydropower station AGC regulation speed, precision and reliability are improved, and the requirements of a power grid on hydropower frequency modulation peak regulation capacity are met.
Drawings
Fig. 1 is a schematic flow chart of a script scheduling calculation method of a hydropower station AGC control device provided by an embodiment of the invention;
Fig. 2 is a schematic diagram of a scheduling calculation flow of triggering an execution script according to an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
Related technical terms:
AGC: automatic power generation control Automatic Generation Control refers to a technology for automatically controlling the active power of a hydropower plant in a rapid and economical manner according to preset conditions and requirements to meet the system requirements.
Script: script is an executable file written in accordance with a certain format using a specific descriptive language.
Embodiment one:
as shown in fig. 1, the invention provides a hydropower station AGC control device script scheduling calculation method, which comprises the following steps:
a script calculation scheduler program arranged in the AGC control device performs scheduling calculation on the script according to a script calculation strategy;
The script calculation scheduling program judges whether the calculation result changes, if not, the calculation of the current script is ended, and the next script is scanned;
if yes, the script calculation scheduling program judges whether the current script has an associated script, if not, the calculation of the current script is ended, and the next script is scanned;
if yes, all associated scripts of the current script are brought into the steps until all scripts in the script file and associated script scheduling calculation are completed.
The script file in this embodiment is generated by visual editing based on the UI interface of the AGC control device, and the edited script file is downloaded to the AGC control device, where the visual editing includes script input, script inspection, and save compiling. When the AGC control device is powered on and started, the downloaded script files are preloaded, all scripts are read into the shared memory, and the corresponding script calculation strategy is obtained based on calculation logic of each script.
The logic of script calculation comprises timing execution and triggering execution, wherein the timing execution comprises setting a timing execution cycle period, and the triggering execution comprises setting a triggering source.
The script calculation strategy comprises the following steps: the timing execution script circularly triggers the scheduling calculation of the script file according to the set timing execution cycle period; the trigger execution script decides whether to trigger the dispatch calculation of the script file according to whether the state of the trigger source is changed.
In the above step, judging whether the current script has the associated script includes searching the script associated with the current script according to the reference relation knowledge base.
The obtaining of the reference relation knowledge base comprises the steps of analyzing the reference relation of all scripts read into the shared memory, obtaining the reference relation among the scripts, and generating the reference relation knowledge base based on the reference relation.
The analysis of the quotation relation of all the scripts read into the shared memory comprises the following steps:
analyzing all scripts to obtain script names, script input parameters and script output parameters;
Storing the script name and script input parameters as keys and values in a hash table mapin, and using the hash table mapin as the input parameter dataset { K 0＝V0,K1＝V1,…,Km＝Vm,…,Kn＝Vn }, wherein K m represents the script name, V m is a List [ x1, x2, xm, …, xn ] represents the script input parameter set, and xm represents the script input parameters;
Storing the script name and script output parameters as keys and values in a hash table mapout, and using the hash table mapout as an output parameter data set { K 0＝W0,K1＝W1,…,Km＝Wm,…,Kn＝Wn }, wherein K m represents the script name, W m is a List [ y1, y2, ym, …, yn ] represents the script output parameter set, ym represents the script output parameters;
Analyzing the input parameter data set and the output parameter data set to obtain reference relations of all scripts, forming a hash table maprelation by the reference relations, and taking the hash table maprelation as a reference relation knowledge base { K 0＝Z0,K1＝Z1,…,Km＝Zm,…,Kn＝Zn }, wherein K m represents the script names, Z m is a List [ Z1, Z2, zm, …, zn ] represents script name sets of all the referenced scripts, and zm represents script names of associated scripts.
The step of analyzing the input parameter data set and the output parameter data set to obtain the quotation relation of all scripts comprises the following steps: if any script output parameter in the output parameter data set is any script input parameter in the input parameter data set, the script corresponding to the script input parameter is the script associated with the script corresponding to the script output parameter.
As shown in fig. 2, taking the example of triggering an execution script:
Calling a data interface provided by a local static library file libagc.a, obtaining real-time data, calculating and setting the real-time data into a shared memory;
The state of a trigger source of the current script is scanned in real time, if the trigger source meets the trigger condition (the state of the trigger source changes), execution calculation of the corresponding script is immediately carried out, and if the trigger condition is not met, the script is scanned;
before storing the calculated result into the shared memory, judging the result, if the calculated result is judged to be changed, continuing the next step, otherwise, ending the calculation;
And acquiring an associated script influenced by an execution script result through a script reference relation knowledge base, judging whether the associated script exists, and if so, sequentially calling associated script introduction data according to a current script calculation result to perform execution calculation until no associated script exists after the current execution script or the calculation result is unchanged.
Whether the real-time data trigger or the script calculation result trigger is adopted, the current script also needs to pay attention to identify effective changes when receiving the changes, determines the elimination of misoperation of the trigger point when editing, prescribes a dead zone or a change range which can be effective, and can trigger if any change is not edited by default.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (6)
1. A hydropower station AGC control device script scheduling calculation method is characterized by comprising the following steps:
When the AGC control device is powered on and started, preloading the downloaded script files, reading all scripts into a shared memory, and acquiring a corresponding script calculation strategy based on calculation logic of each script;
Scheduling calculation is carried out on the script according to the script calculation strategy;
Judging whether the calculation result changes, if not, ending the calculation of the current script and scanning the next script;
If yes, judging whether the current script has an associated script, if not, ending the calculation of the current script, and scanning the next script;
if yes, carrying all associated scripts of the current script into the steps until all scripts in the script file and associated script scheduling calculation are completed;
wherein the computing logic of the script comprises: a timed execution including setting a timed execution cycle period and a trigger execution including setting a trigger source;
The script calculation strategy comprises the following steps: the timing execution script circularly triggers the scheduling calculation of the script file according to the set timing execution cycle period; the trigger execution script decides whether to trigger the dispatch calculation of the script file according to whether the state of the trigger source is changed.
2. The hydropower station AGC control device script scheduling calculation method according to claim 1, wherein the script file is generated based on a UI interface of the AGC control device by visual editing, the edited script file is downloaded to the AGC control device, and the visual editing comprises script input, script checking and save compiling.
3. The method of claim 1, wherein determining whether the current script has an associated script comprises searching for a script associated with the current script based on a knowledge base of reference relationships.
4. The hydropower station AGC control device script scheduling calculation method according to claim 3, wherein the obtaining of the reference relation knowledge base includes analyzing the reference relation of all scripts read into the shared memory to obtain the reference relation among the scripts, and generating the reference relation knowledge base based on the reference relation.
5. The method for calculating script scheduling of AGC control device of a hydropower station according to claim 4, wherein the analyzing the reference relation of all scripts read into the shared memory comprises:
analyzing all scripts to obtain script names, script input parameters and script output parameters;
The script name and script input parameters are stored as keys and values in a hash table mapin, and hash table mapin is used as the input parameter dataset Wherein/>Representing the name of the script,/>Is one/>Representing script input parameter set,/>Representing script input parameters;
The script name and script output parameters are stored as keys and values in a hash table mapout, and hash table mapout is used as the output parameter dataset Wherein/>The name of the script is indicated and,Is one/>Representing script output parameter set,/>Representing script output parameters;
Analyzing the input parameter data set and the output parameter data set to obtain the reference relation of all scripts, forming the reference relation into a hash table maprelation, and taking the hash table maprelation as a reference relation knowledge base Wherein/>Representing the name of the script,/>Is oneScript name set representing all scripts referenced,/>Representing the script name of the associated script.
6. The method for calculating script scheduling of AGC control device of a hydropower station according to claim 5, wherein analyzing the input parameter data set and the output parameter data set to obtain the reference relation of all scripts comprises: if any script output parameter in the output parameter data set is any script input parameter in the input parameter data set, the script corresponding to the script input parameter is the script associated with the script corresponding to the script output parameter.
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