CN106294901B - A kind of customized emulation mode of power system customer based on mixing variable step emulation - Google Patents
A kind of customized emulation mode of power system customer based on mixing variable step emulation Download PDFInfo
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- CN106294901B CN106294901B CN201510276361.3A CN201510276361A CN106294901B CN 106294901 B CN106294901 B CN 106294901B CN 201510276361 A CN201510276361 A CN 201510276361A CN 106294901 B CN106294901 B CN 106294901B
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Abstract
The present invention provides a kind of customized emulation mode of power system customer based on mixing variable step emulation, pass through the pretreatment of user-defined model, initialization and simulation calculation, optimize user's custom feature of Based on Power System Analysis Software Package, both the redundancy for reducing user-defined model emulation when system dynamic course is steady can have been guaranteed, calculating speed is improved without losing the acceptable accuracy of engineering calculation, again careful accurate calculating can be carried out in needing the period paid close attention to, realize electromechanics-electro-magnetic transient of Based on Power System Analysis Software Package and the mixing step-length copying of the medium-term and long-term process of electromechanics-, and variable step emulation is realized to a certain extent, improve the computational convergence of Based on Power System Analysis Software Package, accuracy and computational efficiency, extend the use scope of Based on Power System Analysis Software Package.
Description
Technical field
The present invention relates to a kind of emulation modes, and in particular to it is a kind of based on mixing variable step emulation power system customer from
Define emulation mode.
Background technique
With the rapid development of electric system and power electronic technique, novel system element is constantly put into and system controls skill
Art is showing improvement or progress day by day, it is desirable that several new-type elements and various control functions can be simulated in power system computation.General emulation
Analysis software is provided with user customized (User-defined, UD) modeling and/or third party software interface function, to realize
The open emulation of software, makes up the deficiency of professional simulation software.
In domestic existing power system simulation software, UD function technology more falls behind, in Based on Power System Analysis Software Package
There is UD function in (Power System Analysis Software Package, PSASP), but its emulation uses and main program
Consistent fixed step size is easy to happen the problem that self-definition model calculating does not restrain or computing redundancy degree is too big, influences emulation
Precision and efficiency.
External business software such as matlab, PSCAD etc. have a UD function, and emulate for variable step, but these softwares with
The simulation algorithm of PSASP, process are widely different, therefore realization mechanism is different from the present invention, and are still not carried out and are emulated based on fixed step size
Mixing variable step UD emulation mode under main program.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of electric system based on mixing variable step emulation
The customized emulation mode of user can both guarantee the redundancy for reducing user-defined model emulation when system dynamic course is steady
Degree improves calculating speed without losing the acceptable accuracy of engineering calculation, but can be carried out in needing period for paying close attention to it is careful
It is accurate to calculate, guarantee the computational accuracy of user-defined model, reduces and calculate a possibility that not restraining.
In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme that:
The present invention provides a kind of customized emulation mode of power system customer based on mixing variable step emulation, the method
The following steps are included:
Step 1: the pretreatment of user-defined model；
Step 2: the initialization of user-defined model；
Step 3: the simulation calculation of user-defined model.
In the step 1, the control parameter of simulation calculation is set, completes the pretreatment of user-defined model；
The control parameter of simulation calculation includes subdivision step-length multiple, mixing variable step emulation initial time and mixing variable step
Emulate finish time.
In the step 2, judge to mix whether variable step emulation initial time is zero moment, if then by mixing variable step
Initialization calculating is carried out, otherwise carries out initialization calculating by the fixed step size of Based on Power System Analysis Software Package.
In the step 3, based on the emulation time step of Based on Power System Analysis Software Package, sentenced in each time step
It is disconnected, if current time emulates between initial time and mixing variable step emulation finish time in the mixing variable step of setting,
Mixing variable step emulation is carried out, is determined according to subdivision step-length multiple and increases step-length or reduce step-length, specifically included:
If increasing step-length, judge whether the time step is overlapped with the emulation time step of user-defined model, if then being used
The calculating of family self-definition model simultaneously exports calculated result to Based on Power System Analysis Software Package, otherwise utilizes interpolation calculation by user
It is exported after the calculated result processing of a time step to Based on Power System Analysis Software Package on self-definition model；
If reducing step-length, the iterative solution of user-defined model subdivision step-length is carried out under the time step, by final meter
Result is calculated to export to Based on Power System Analysis Software Package.
In the step 3, under each emulation time step of Based on Power System Analysis Software Package, user-defined model and electricity
The analysis integrated program of Force system all carries out the interaction of input/output variable；Based on Power System Analysis Software Package calls user to make by oneself
Adopted interface function passes through user's self defined interface letter related with value after Based on Power System Analysis Software Package calculates completion
Corresponding input variable is passed to user-defined model by number；User-defined model emulation finishes, by related with restoring value
User's self defined interface function calculated result is passed into Based on Power System Analysis Software Package, circuit sequentially calculating until emulation
Terminate.
The function set that user's self defined interface function is formed is stored in user's self defined interface module, the use
Family self defined interface module is write using VC, and it is compiled into dynamic link library * .dll document form, by Power System Analysis
Synthesizer calls.
Compared with prior art, the beneficial effects of the present invention are:
Present invention optimizes user's custom features of Based on Power System Analysis Software Package, can both guarantee in system dynamic
The redundancy for reducing user-defined model emulation when process is steady improves calculating speed without losing the acceptable standard of engineering calculation
Exactness, and careful accurate calculating can be carried out in needing the period paid close attention to, guarantee the computational accuracy of user-defined model,
It reduces and calculates a possibility that not restraining, Based on Power System Analysis Software Package is made more to adapt to the novel member of a large amount of electric system at this stage
Part emerges in large numbers, and needs flexible modeling and simulating means to adapt to the needs of security and stability analysis of large power grid, realizes electric system point
Electromechanics-electro-magnetic transient of synthesizer and the mixing step-length copying of the medium-term and long-term process of electromechanics-are analysed, and to a certain extent
Variable step emulation is realized, computational convergence, accuracy and the computational efficiency of Based on Power System Analysis Software Package are improved, is extended
The use scope of Based on Power System Analysis Software Package.
Detailed description of the invention
Fig. 1 is the process schematic that mixing increases step-length emulation in the embodiment of the present invention；
Fig. 2 is the process schematic that step-length emulation is reduced in mixing in the embodiment of the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
The present invention provides a kind of customized emulation mode of power system customer based on mixing variable step emulation, the method
The following steps are included:
Step 1: the pretreatment of user-defined model；
Step 2: the initialization of user-defined model；
Step 3: the simulation calculation of user-defined model.
In the step 1, the control parameter of simulation calculation is set, completes the pretreatment of user-defined model；
The control parameter of simulation calculation includes subdivision step-length multiple, mixing variable step emulation initial time and mixing variable step
Emulate finish time.
In the step 2, judge to mix whether variable step emulation initial time is zero moment, if then by mixing variable step
Initialization calculating is carried out, otherwise carries out initialization calculating by the fixed step size of Based on Power System Analysis Software Package.
In the step 3, (such as Fig. 1 and Fig. 2) based on the emulation time step of Based on Power System Analysis Software Package, each
Time step is judged, if current time is at the end of the mixing variable step of setting emulation initial time and mixing variable step emulation
Between quarter, then mixing variable step emulation is carried out, is determined according to subdivision step-length multiple and increase step-length or reduce step-length, specifically included:
If increasing step-length, judge whether the time step is overlapped with the emulation time step of user-defined model, if then being used
The calculating of family self-definition model simultaneously exports calculated result to Based on Power System Analysis Software Package, otherwise utilizes interpolation calculation by user
It is exported after the calculated result processing of a time step to Based on Power System Analysis Software Package on self-definition model；
If reducing step-length, the iterative solution of user-defined model subdivision step-length is carried out under the time step, by final meter
Result is calculated to export to Based on Power System Analysis Software Package.
In the step 3, under each emulation time step of Based on Power System Analysis Software Package, user-defined model and electricity
The analysis integrated program of Force system all carries out the interaction of input/output variable；Based on Power System Analysis Software Package calls user to make by oneself
Adopted interface function passes through user's self defined interface letter related with value after Based on Power System Analysis Software Package calculates completion
Corresponding input variable is passed to user-defined model by number；User-defined model emulation finishes, by related with restoring value
User's self defined interface function calculated result is passed into Based on Power System Analysis Software Package, circuit sequentially calculating until emulation
Terminate.
The function set that user's self defined interface function is formed is stored in user's self defined interface module, the use
Family self defined interface module is write using VC, and it is compiled into dynamic link library * .dll document form, by Power System Analysis
Synthesizer calls.
The present invention optimizes Power System Analysis by the pretreatment, initialization and simulation calculation of user-defined model
User's custom feature of synthesizer can both guarantee to reduce user-defined model emulation when system dynamic course is steady
Redundancy, improve calculating speed without losing the acceptable accuracy of engineering calculation, but can in needing period for paying close attention into
The careful accurate calculating of row, guarantees the computational accuracy of user-defined model, reduces and calculates a possibility that not restraining, makes power train
Analysis integrated program of uniting more adapts to a large amount of electric system new-type elements at this stage and emerges in large numbers, need flexible modeling and simulating means with
The needs for adapting to security and stability analysis of large power grid, realize the electromechanics-electro-magnetic transient and machine of Based on Power System Analysis Software Package
Electricity-medium-term and long-term process mixing step-length copying, and variable step emulation is realized to a certain extent, improve electric system
Computational convergence, accuracy and the computational efficiency of analysis integrated program, extend Based on Power System Analysis Software Package uses model
It encloses.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute
The those of ordinary skill in category field can still modify to a specific embodiment of the invention referring to above-described embodiment or
Equivalent replacement, these are applying for this pending hair without departing from any modification of spirit and scope of the invention or equivalent replacement
Within bright claims.
Claims (1)
1. a kind of customized emulation mode of power system customer based on mixing variable step emulation, it is characterised in that: the method
The following steps are included:
Step 1: the pretreatment of user-defined model；
Step 2: the initialization of user-defined model；
Step 3: the simulation calculation of user-defined model；
In the step 1, the control parameter of simulation calculation is set, completes the pretreatment of user-defined model；
The control parameter of simulation calculation includes subdivision step-length multiple, mixing variable step emulation initial time and mixing variable step emulation
Finish time；
In the step 2, judge to mix whether variable step emulation initial time is zero moment, if then carrying out by mixing variable step
Initialization calculates, and otherwise carries out initialization calculating by the fixed step size of Based on Power System Analysis Software Package；
In the step 3, based on the emulation time step of Based on Power System Analysis Software Package, judged in each time step, such as
Fruit current time emulates between initial time and mixing variable step emulation finish time in the mixing variable step of setting, then is mixed
Variable step emulation is closed, is determined according to subdivision step-length multiple and increases step-length or reduce step-length, specifically included:
If increasing step-length, judge whether the time step is overlapped with the emulation time step of user-defined model, if then carrying out user certainly
The calculating of Definition Model simultaneously exports calculated result to Based on Power System Analysis Software Package, is otherwise made by oneself user using interpolation calculation
It is exported after the calculated result processing of a time step to Based on Power System Analysis Software Package on adopted model；
If reducing step-length, the iterative solution of user-defined model subdivision step-length is carried out under the time step, by final calculating knot
Fruit exports to Based on Power System Analysis Software Package；
In the step 3, under each emulation time step of Based on Power System Analysis Software Package, user-defined model and power train
Analysis integrated program of uniting all carries out the interaction of input/output variable；Based on Power System Analysis Software Package calls that user is customized connects
Mouth function will by user's self defined interface function related with value after Based on Power System Analysis Software Package calculates completion
Corresponding input variable passes to user-defined model；User-defined model emulation finishes, by being worth related use with restoring
Calculated result is passed to Based on Power System Analysis Software Package by family self defined interface function, circuits sequentially calculating until emulation knot
Beam；
The function set that user's self defined interface function is formed is stored in user's self defined interface module, and the user is certainly
Defining interface module is write using VC, and it is compiled into dynamic link library * .dll document form, is integrated by Power System Analysis
Routine call.
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| CN112434420B (en) * | 2020-11-20 | 2023-09-05 | 国网山东省电力公司电力科学研究院 | Time synchronization and data interaction method for hybrid simulation of comprehensive energy system |
| CN114237767B (en) * | 2022-02-24 | 2022-06-14 | 西安羚控电子科技有限公司 | System and method for realizing multi-speed simulation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101533428A (en) * | 2009-04-30 | 2009-09-16 | 华北电力大学 | Electro-magnetic transient off-line non-real time parallel simulation system and simulation method |
| CN103942091A (en) * | 2014-04-17 | 2014-07-23 | 国家电网公司 | MATLAB user-defined model and PSASP joint simulation excitation system simulation method and system |
| CN104102526A (en) * | 2014-07-04 | 2014-10-15 | 中国西电电气股份有限公司 | Collaborative interface for co-simulation of PSCAD (power system computer aided design) with third-party simulation software or hardware |
-
2015
- 2015-05-26 CN CN201510276361.3A patent/CN106294901B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101533428A (en) * | 2009-04-30 | 2009-09-16 | 华北电力大学 | Electro-magnetic transient off-line non-real time parallel simulation system and simulation method |
| CN103942091A (en) * | 2014-04-17 | 2014-07-23 | 国家电网公司 | MATLAB user-defined model and PSASP joint simulation excitation system simulation method and system |
| CN104102526A (en) * | 2014-07-04 | 2014-10-15 | 中国西电电气股份有限公司 | Collaborative interface for co-simulation of PSCAD (power system computer aided design) with third-party simulation software or hardware |
Non-Patent Citations (1)
| Title |
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| 一种电力系统元件通用模型建模方法;岳程燕等;《2007中国电机工程学会年会论文集》;20071231;1-5 * |
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