CN105809309A - Power system safety control strategy simulation system and simulation method thereof - Google Patents
Power system safety control strategy simulation system and simulation method thereof Download PDFInfo
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Abstract
The invention relates to a power system safety control strategy simulation system and a simulation method thereof. The simulation system includes a script parsing module, a state simulation module, a fault simulation module, a logic execution module and a communication interface module. When the script language is already parsed, the state of the power grid is acquired. Meanwhile, according to the structure of a syntax tree and in conjunction with the state of associated components and equipment, the program logic is executed. In this way, the execution and the determination of an operation mode and a safety control policy, and the output of the safety control policy can be realized. The safety control policy is outputted via the communication interface module. According to the technical scheme of the invention, the logical relationship in the field of the power system is described and parsed. Meanwhile, the logistics of the safety control policy and the behavior thereof can be realistically simulated by the simulation software of the power system. Therefore, the quota of the power grid matched with the current condition can be given in real time. Moreover, the accuracy of the simulation and calculation software of the power grid is greatly improved.
Description
Technical field
The present invention relates to the analogue system of a kind of field of power and emulation mode thereof, in particular to a kind of power system peace control Strategy Simulation system and emulation mode thereof.
Background technology
It is a kind of new and effective logic description language being described for operation of power networks control method and automatic safety device control strategy that power system mode describes language.This language is based on CIM/E language and with reference to C language definition mode and Cshell logic judgement mode, thus describing operation of power networks to control condition and means content and incidence relation between, and automatic safety device operation condition and action policy content and incidence relation between.
Method of operation constraint and peace control policy depiction method and analytic method thereof are mainly operation of power networks, traffic department's service.Mainly through power system operating mode and strategy are described with carrying out specification, it is achieved the automatic parsing to which and peace control strategy.
The disturbance of power system is divided three classes by " guiding rules of power system safety and stability ": the first kind is common ordinary failures；Equations of The Second Kind fault is the more serious fault that probability of occurrence is relatively low, it is desirable to system can guarantee that stable operation when bearing this type of fault, but allows loss sub-load；3rd class fault is rare serious complex fault.Peace control strategy is built-in some control strategies of security control device, security control device utilize peace control strategy realize machine of cutting, cutting load, quickly subtract exert oneself, dc power emergency lifting or time degradation function, it is ensured that power grid operation.
E language defines a kind of simple efficient electrical network universal model Description standard, it is adaptable to the application scenario that large-scale power grid model is described and exchanges by text mode.
Power system operation mode and peace control policy depiction specification relate to the specific language of a large amount of power domain.Enable this language in concerned power automation application, reach emulation purpose, the compiler having oneself as other all machine languages have to be accomplished, compiler is made up of morphology and grammer two parts, and now popular lexical analyzer and syntax analyzer flex and bison do.
The lexical analyzer generated by flex can read input, the relevant action that coupling input suitable after mating every time with all of regular expression and execution.Flex can translate into a kind of efficient internal form all of regular expression, and this makes it almost can process the pattern that be there is a need to coupling simultaneously, and therefore its speed improves with can becoming Radix Achyranthis Bidentatae.Flex may identify which regular expression, and bison may identify which grammer.Flex is decomposed into several fragments inlet flow, and bison then analyzes these marks and logic-based is combined, it is possible to be expressed as a tree structure.
Summary of the invention
For solving above-mentioned deficiency of the prior art, it is an object of the invention to provide a kind of power system peace control Strategy Simulation system and emulation mode thereof, logical relation in field of power is described and resolves by the present invention, utilize power system simulation software of the present invention simulated grid peace control policy logic true to nature and behavior thereof, provide the electrical network limit mated with current working in real time, drastically increase the accuracy of grid simulation software for calculation.
It is an object of the invention to adopt following technical proposals to realize:
The present invention provides a kind of power system peace control Strategy Simulation system, and it thes improvement is that, described analogue system includes:
Script parsing module: describe language syntax by power system mode and be read out script analyzing, therefrom extract relevant component equipment, and the logical relation corresponding to operation of power networks control mode and strategy, form logic and perform formula, ultimately generate executable expression syntax tree；
State simulation module: be used for obtaining electric network state model, and extract the state of element and equipment according to the script implemented；
Fault simulation module: fault set therein is the data simulation source of power system device member in structural grammar tree node internal storage structure, is supplementing electric network state model, namely adds fault attribute in power system device subtype member；
Logic performs module: be used for performing script logic relation, namely performs structural grammar tree, draws peace control strategy；
Communication interface modules: for realizing the communication of analogue system and power grid application system, and export peace control strategy；
The input of described analogue system includes power system mode description language script, electric network state model, electrical network enforcement state and fault set.
Further, described script parsing module generates independent logical program structure, the logical relation of logical program structure recording element and equipment after having resolved script file；Described state simulation module obtains electric network state model, and extracts the state of element and equipment according to the script implemented；Described logic perform module obtain according to respective algorithms perform institute must element and the state of equipment, and is substituted into logical program structure realization execution；Perform result to be exported by communication interface modules.
Further, described script parsing module includes:
(1) structure elucidation module: be analyzed script file resolving according to " linguistic norm ", obtain grammatical structure, form structural grammar tree；
(2) structural grammar tree: the output result of interrecord structure parsing module, forms tree, for the parsing and the execution that export result；
(3) expression parsing module: the execution condition in structural grammar tree and execution conditional expression are resolved, generates the expression syntax tree based on function；
(4) expression syntax tree: for storing the analysis result generated after expression parsing module resolves and receiving related data in electrical network full model E file.
Further, the Data Source of described state simulation module is electrical network full model E file, state simulation module periodically in electrical network full model E file data storing to the power system device member of the structural grammar tree node internal storage structure generated by compiler, will will receive real-time incremental message and the power system device member of structural grammar tree node is updated in the middle of other cycles；Described incremental message includes digital & analog signal in SCADA, peace control monitors system equipment status displacement information and intelligent alarm information.
Further, all of electrical network logic tree is indexed by communication interface modules, including: equipment index and topological relation index；Communication interface modules is used for collecting incremental message, and triggers various index, finds logical relation, logical relation and all node device information matches limits thereof is exported with peace control policy logic.
The present invention also provides for the emulation mode of a kind of power system peace control Strategy Simulation system, it is characterised in that described method comprises the steps:
A, script resolve；
B, state simulation；
C, logic are mated；
D, output peace control strategy.
Further, in described step A, realizing script with script parsing module and resolve, script file is analyzed resolving by structure elucidation module according to " linguistic norm ", obtains grammatical structure, forms structural grammar tree；The output result of interrecord structure parsing module, forms structural grammar tree, for the parsing and the execution that export result；Execution condition in structural grammar tree and execution conditional expression are resolved by expression parsing module, generate the expression syntax tree based on function；Described expression syntax tree is for storing the analysis result generated after expression parsing module resolves and receiving related data in electrical network full model E file.
Further, in described step B, state simulation is realized by state simulation module, complete resolving script, state simulation module obtains the malfunction of electric network state and component equipment, and periodically in electrical network full model E file data storing to the power system device member of the structural grammar tree node internal storage structure generated by compiler, will will receive real-time incremental message and the power system device member of structural grammar tree node is updated in the middle of other cycles.
Further, in described step C, perform module by logic and realize logic coupling；Described logic performs module and performs logic according to the state of structural grammar tree, binding member and equipment, it is achieved execution and the judgement to the method for operation and peace control strategy.
Further, in described step D, with logic communication module output peace control strategy.
Compared with immediate prior art, the excellent effect that technical scheme provided by the invention has is:
A kind of power system peace control Strategy Simulation system provided by the invention and emulation mode thereof, logical relation in field of power is described and resolves, utilize power system simulation software of the present invention simulated grid peace control policy logic true to nature and behavior thereof, provide the electrical network limit mated with current working in real time, drastically increase the accuracy of grid simulation software for calculation.
Accompanying drawing explanation
Fig. 1 is power system provided by the invention peace control Strategy Simulation system construction drawing；
Fig. 2 is script process of analysis figure provided by the invention；
Fig. 3 is structural grammar tree schematic diagram provided by the invention；
Fig. 4 is expression syntax tree schematic diagram provided by the invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
The present invention provides a kind of power system peace control Strategy Simulation system, and its structure chart is as it is shown in figure 1, include:
One, script parsing module: describe language syntax by power system mode and be read out associated script analyzing, therefrom extract relevant component equipment, and the logical relation corresponding to operation of power networks control method and strategy, form logic and perform formula, ultimately generate executable logical program structure (syntax tree).This module achieves the parsing completely that power system mode describes language, supports left and right rule and the logic of customization in this linguistic norm, and generates exclusive logical program structure, performs module for logic and realize performing.As shown in Figure 2.
Described script parsing module includes:
(1) structure elucidation module: the input of structure elucidation module is original script file, this document must comply with the rule of definition in " power system mode describes linguistic norm _ rower version " (rear abbreviation " linguistic norm ").Structure elucidation module uses morphology and grammar analysis technique and according to " linguistic norm ", script file carries out morphology parsing and syntax parsing, according to the grammatical rules that author formulates, what generate a kind of similar C compiler is capable of identify that power system mode describes the compiler of language.
(2) structural grammar tree:
Structural grammar tree is the compiling result for interrecord structure parsing module, and the data structure designed.The define structure of definition, IF structure and E list structure etc. in such as " linguistic norm ".Using all these data structure data member as tree node or tree node, form tree, for follow-up parsing and execution.
This tree construction as it is shown on figure 3, in figure ellipsis represent expansible.
(3) expression parsing module: mainly realize in structural grammar tree, it is necessary to the condition of execution resolves.This condition should form the expression formula being made up of basic function after structure elucidation.This conditional expression to be then analyzed resolving by expression parsing module, it is possible to so says, structure elucidation module is keyword in checking " linguistic norm ", and expression parsing module is the function interface provided in checking " linguistic norm ".Verify errorless after, set up expression syntax tree based on function.
(4) expression syntax tree
After expression parsing module performs, the final expression formula obtained is by function, numeral, comparison operators and operator composition, then expression formula carries out morphological analysis and syntactic analysis, obtains expression syntax tree, simultaneously one new tree data structure of design.Each node of this tree is corresponding with each node of expression syntax tree, preserves expression syntax burl point value.
Expression syntax tree illustrates such as Fig. 4: represent that certain section of electric network data has a number of units of certain power plant start simultaneously of stopping transport more than 20.
Structural grammar tree and expression syntax tree generate when document analysis, can reside in internal memory after generation, as long as script file is not revised, these two syntax trees avoid the need for regenerating, and simply call upon execution.
Script parsing module realizes power system mode is described the parsing of language, and its resolution rules is in accordance with the definition in " power system mode describes linguistic norm ".
It is a kind of plain text language that power system mode describes language, possesses herein below:
1) description of operation of power networks control method and automatic safety device control strategy.
2) the description method of power system operating mode, operation of power networks control strategy, automatic safety device operation condition and automatic safety device action message.
3) logical relation between power system operating mode and operation of power networks control strategy.
4) logical relation of automatic safety device operation condition and automatic safety device action message.
Power system Description standard mainly includes four parts, refers to " power system operating mode constraint and peace control policy depiction specification ":
<1>keyword
Include: outside or User Defined quotes starting character, and similar C language usage is mentioned common portion or high priority part in another one file.
Starting character quoted by model:CIM/E model, is used for quoting electric network model file
Define: variable-definition assignment, similar C language usage, general defined variable, these variablees can be section and the macrodefinition of various complex expression.
Namespace: NameSpace, similar C language usage.Primary responsibility in peace control emulation up and down multistage and multizone script differentiation with merge.
Priority: priority, it is different for having very shifty priority in power system operating mode constraint with peace control policy depiction specification, such as the control measure of provisional maintenance peace is by having precedence over the peace control strategy of routine, thus needs priority higher for provisional peace control policy tag.
Timespan: timestamp, represents network system Iterim Change mode strategy within certain time period.
Direction: equipment or direction of tide.
<2>logical symbol
IF: conditional statement starting character
THEN: perform statement starting character
ELSE: conditional statement starting character, is combined use with IF, THEN.
ENDIF: logical statement end mark
Power system mode describes the logical relation such as table 1 below of the definition in language:
Table 1 power system mode describes the logical relation table of the definition in language
Illustrate:
IF $ (maternal formula is closed by Three Gorges left bank power plant)
THEN
CUTGEN (Three Gorges left bank power plant)=600；
ENDIF
This example is meant to after satisfying condition $ (maternal formula is closed by Three Gorges left bank power plant), output peace control strategy CUTGEN (Three Gorges left bank power plant)=600；
<3>E table: power system mode describes the E table specification of the definition in language in Table 2:
Table 2 power system mode describes the E table of the definition in language
Illustrate:
<maternal formula limit is closed in left bank>
<maternal formula Xian E > is closed in/left bank;
<4>operative symbol
The operative symbol of native system support and illustrated in table 3:
Table 3 operative symbol table
| Descriptor | Definition |
| {} | Simultaneous specifier |
| () | Priority symbol |
| * | Multiplication accords with |
| / | Division operation accords with |
| + | Add operator |
| - | Subtract operator |
| == | Equal to judging symbol |
| ！= | It is not equal to judgement symbol |
| < | Less than judging symbol |
| > | More than judging symbol |
| ≤ | Do not judge symbol very much |
| >= | It is not less than judgement symbol |
| ~ | Closed interval, left and right |
| || | Or relational symbol |
| && | With relational symbol |
| ！ | Non-relation character |
<5>function: function is in Table 4:
Table 4 function table
<6>other: // or/* */: annotation and: line feed connector.
Two, state simulation module
State simulation module realizes the acquisition to electric network state model, and according to the state of the script extraction related elements implemented and equipment, as the basic variable element that logic performs.This variable is designed to a class members being called power system device type in structural grammar tree, includes each attribute of power system device during such design.Such as line facility includes the various information such as meritorious, idle, bus nodes number, associated switch disconnecting link, line direction, three phase connections of circuit.These information needs to obtain from electric network state model.
Electric network state model provides in data file mode, and this data file generates by standard E formatted file, and this data file is read out resolving and recording the state of related elements and equipment by native system, foundation during as peace control policy enforcement.
Electrical network full model E file is read in the power system device member entering structural grammar tree node internal storage structure by routines periodically (every five minutes).In the middle of other cycles, the power system device member of structural grammar tree node is updated by the message receiving real-time increment.These message include digital & analog signal in SCADA, peace control monitors system equipment status displacement information, intelligent alarm information etc..
Three, fault simulation module: fault set therein is another significant data emulation source of power system device member in structural grammar tree node internal storage structure.Being supplementing electric network state model, namely add a fault attribute in power system device subtype member, other functions are the same with state simulation module.
Four, peace control strategy output module:
Read new basic data and can trigger full logic coupling work.Logic performs module and resolves at script, on the basis of state simulation and fault simulation, according to current electric network state, malfunction, performs script logic, namely performs structural grammar tree, draws peace control strategy.
Five, communication interface modules realizes the communication function of native system and other power grid application system.Setting up various index for all of electrical network logic tree: have equipment to index, topological relation index etc. indexes.As collected incremental message, various index will be triggered, thus finding interrelated logic, according to logic and the logic output such as all node device information matches limits and peace control strategy thereof.
Native system importation includes power system mode description language script, electric network state model, and electrical network implements state, fault set.Complete resolving script, and after obtaining electric network state, malfunction, by obtaining structural grammar tree, the state in conjunction with related elements and equipment performs programmed logic, it is achieved execution and the judgement to the method for operation and peace control strategy, and it is tactful to export peace control.Peace control strategy can be exported by communication interface modules.
The present invention also provides for the emulation mode of a kind of power system peace control Strategy Simulation system, and the method completes resolving script, and after obtaining electric network state, malfunction, peace control strategy can be exported by communication interface modules, and described method comprises the steps:
A, script resolve；Realizing script with script parsing module to resolve, script file is analyzed resolving by structure elucidation module according to " linguistic norm ", obtains grammatical structure, forms structural grammar tree；The output result of interrecord structure parsing module, forms structural grammar tree, for the parsing and the execution that export result；Execution condition in structural grammar tree and execution conditional expression are resolved by expression parsing module, generate the expression syntax tree based on function；Described expression syntax tree is for storing the analysis result generated after expression parsing module resolves and receiving related data in electrical network full model E file.
B, state simulation；State simulation is realized by state simulation module, complete resolving script, state simulation module obtains the malfunction of electric network state and component equipment, and periodically in electrical network full model E file data storing to the power system device member of the structural grammar tree node internal storage structure generated by compiler, will will receive real-time incremental message and the power system device member of structural grammar tree node is updated in the middle of other cycles.
C, logic are mated；Perform module by logic and realize logic coupling；Described logic performs module and performs logic according to the state of structural grammar tree, binding member and equipment, it is achieved execution and the judgement to the method for operation and peace control strategy.
D, with logic communication module output peace control strategy.
Finally should be noted that: above example is only in order to illustrate that technical scheme is not intended to limit; although the present invention being described in detail with reference to above-described embodiment; the specific embodiment of the present invention still can be modified or equivalent replacement by those of ordinary skill in the field; these are without departing from any amendment of spirit and scope of the invention or equivalent replace, within the claims of the present invention all awaited the reply in application.
Claims (10)
1. a power system peace control Strategy Simulation system, it is characterised in that described analogue system includes:
Script parsing module: describe language syntax by power system mode and be read out script analyzing, therefrom extract relevant component equipment, and the logical relation corresponding to operation of power networks control mode and strategy, form logic and perform formula, ultimately generate executable expression syntax tree；
State simulation module: be used for obtaining electric network state model, and extract the state of element and equipment according to the script implemented；
Fault simulation module: fault set therein is the data simulation source of power system device member in structural grammar tree node internal storage structure, is supplementing electric network state model, namely adds fault attribute in power system device subtype member；
Logic performs module: be used for performing script logic relation, namely performs structural grammar tree, draws peace control strategy；
Communication interface modules: for realizing the communication of analogue system and power grid application system, and export peace control strategy；
The input of described analogue system includes power system mode description language script, electric network state model, electrical network enforcement state and fault set.
2. analogue system as claimed in claim 1, it is characterised in that described script parsing module generates independent logical program structure, the logical relation of logical program structure recording element and equipment after having resolved script file；Described state simulation module obtains electric network state model, and extracts the state of element and equipment according to the script implemented；Described logic perform module obtain according to respective algorithms perform institute must element and the state of equipment, and is substituted into logical program structure realization execution；Perform result to be exported by communication interface modules.
3. analogue system as claimed in claim 1, it is characterised in that described script parsing module includes:
(1) structure elucidation module: be analyzed script file resolving according to " linguistic norm ", obtain grammatical structure, form structural grammar tree；
(2) structural grammar tree: the output result of interrecord structure parsing module, forms tree, for the parsing and the execution that export result；
(3) expression parsing module: the execution condition in structural grammar tree and execution conditional expression are resolved, generates the expression syntax tree based on function；
(4) expression syntax tree: for storing the analysis result generated after expression parsing module resolves and receiving related data in electrical network full model E file.
4. analogue system as claimed in claim 1, it is characterized in that, the Data Source of described state simulation module is electrical network full model E file, state simulation module periodically in electrical network full model E file data storing to the power system device member of the structural grammar tree node internal storage structure generated by compiler, will will receive real-time incremental message and the power system device member of structural grammar tree node is updated in the middle of other cycles；Described incremental message includes digital & analog signal in SCADA, peace control monitors system equipment status displacement information and intelligent alarm information.
5. analogue system as claimed in claim 1, it is characterised in that all of electrical network logic tree is indexed by communication interface modules, including: equipment index and topological relation index；Communication interface modules is used for collecting incremental message, and triggers various index, finds logical relation, logical relation and all node device information matches limits thereof is exported with peace control policy logic.
6. the emulation mode of the power system peace control Strategy Simulation system as according to any one of claim 1-5, it is characterised in that described method comprises the steps:
A, script resolve；
B, state simulation；
C, logic are mated；
D, output peace control strategy.
7. emulation mode as claimed in claim 6, it is characterised in that in described step A, realizes script with script parsing module and resolves, and script file is analyzed resolving by structure elucidation module according to " linguistic norm ", obtains grammatical structure, forms structural grammar tree；The output result of interrecord structure parsing module, forms structural grammar tree, for the parsing and the execution that export result；Execution condition in structural grammar tree and execution conditional expression are resolved by expression parsing module, generate the expression syntax tree based on function；Described expression syntax tree is for storing the analysis result generated after expression parsing module resolves and receiving related data in electrical network full model E file.
8. emulation mode as claimed in claim 6, it is characterized in that, in described step B, state simulation is realized by state simulation module, complete resolving script, state simulation module obtains the malfunction of electric network state and component equipment, and periodically in electrical network full model E file data storing to the power system device member of the structural grammar tree node internal storage structure generated by compiler, will will receive real-time incremental message and the power system device member of structural grammar tree node is updated in the middle of other cycles.
9. emulation mode as claimed in claim 6, it is characterised in that in described step C, performs module by logic and realizes logic coupling；Described logic performs module and performs logic according to the state of structural grammar tree, binding member and equipment, it is achieved execution and the judgement to the method for operation and peace control strategy.
10. emulation mode as claimed in claim 6, it is characterised in that in described step D, with logic communication module output peace control strategy.
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