CN108280278A - A kind of high voltage direct current equals the emulation mode and system of anti-gas dynamic characteristic - Google Patents
A kind of high voltage direct current equals the emulation mode and system of anti-gas dynamic characteristic Download PDFInfo
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Abstract
The present invention relates to emulation modes and system that a kind of high voltage direct current equals anti-gas dynamic characteristic, and transient shock current value is obtained from straight-flow system instruction;Anti- gas vibration protection characteristic model is put down based on the direct current pre-established and the transient shock current value carries out simulation calculation, is obtained high voltage direct current and is put down anti-gas dynamic characteristic response;Wherein, it includes using the flat Non-linear coupling characteristic between anti-gas mechanical oscillation acceleration and transient shock current of Gauss regression algorithm description that the direct current pre-established, which puts down anti-gas vibration protection characteristic model,.Technical solution provided by the invention solves existing direct current emulation and is absorbed in electrical quantity factor, the fining emulation of this key complexity non-electric quantity that can be directly latched direct current of anti-gas is put down due to lacking so that accident is recurred and simulation analysis, equipment test and improvement cause certain difficult problem.
Description
Technical field
The technology for equalling anti-gas equipment is tested the present invention relates to simulation calculation, and in particular to a kind of high voltage direct current puts down anti-gas
The emulation mode and system of dynamic characteristic.
Background technology
In recent years, occurred it is a lot of under AC network normal operating and fault condition, because direct current puts down anti-protection system
System strategy is improper, and direct current is caused to be latched, and the accident case of greater impact, existing direct current emulation is brought to be absorbed in electrical quantity to power grid
Factor puts down the fining emulation of this complicated non-electric quantity of the key that can be directly latched direct current of anti-gas due to lacking so that
Accident is recurred and simulation analysis, equipment test and improvement cause certain difficulty.
Invention content
It is absorbed in electrical quantity factor to solve existing direct current emulation, flat anti-gas is this can be directly latched directly due to lacking
The fining emulation of the complicated non-electric quantity of key of stream so that accident is recurred and simulation analysis, equipment test and improvement cause one
Fixed difficult problem, equals the emulation mode of anti-gas dynamic characteristic the object of the present invention is to provide a kind of high voltage direct current and is
System solves existing direct current emulation and is absorbed in electrical quantity factor, this pass that can be directly latched direct current of anti-gas is put down due to lacking
The fining emulation of key complexity non-electric quantity so that accident is recurred and simulation analysis, equipment test and improvement cause certain be stranded
Difficult problem.
The purpose of the present invention is what is realized using following technical proposals:
The present invention provides the emulation mode that a kind of high voltage direct current equals anti-gas dynamic characteristic, thes improvement is that:
Transient shock current value is obtained from straight-flow system instruction;
Anti- gas vibration protection characteristic model is put down based on the direct current pre-established and the transient shock current value is imitated
It is true to calculate, it obtains high voltage direct current and puts down anti-gas dynamic characteristic response;
Wherein, it includes being retouched using Gauss regression algorithm that the direct current pre-established, which puts down anti-gas vibration protection characteristic model,
State the Non-linear coupling characteristic between flat anti-gas mechanical oscillation acceleration and transient shock current.
Further:The direct current put down anti-gas vibration protection characteristic model to establish process as follows:
The history of acquisition straight-flow system puts down anti-gas mechanical oscillation acceleration and history transient shock current;
Using Gauss regression algorithm to flat non-linear coupling between anti-gas mechanical oscillation acceleration and transient shock current
It closes characteristic and carries out simulation calculation, obtain gaussian coefficient;
Direct current, which is obtained, according to the gaussian coefficient puts down anti-gas vibration protection characteristic model.
Further:The direct current is put down anti-gas vibration protection characteristic model and is indicated with following formula:
Wherein:avibFor mechanical oscillation acceleration, I is transient shock current, and λ is the first gaussian coefficient, and ε is the second Gauss
Coefficient, γ are third gaussian coefficient.
Further:The third gaussian coefficient γ is indicated with following formula:
Wherein:ζi=ln (avib i) indicate vibration acceleration avibN in i-th of value avib iNatural logrithm;IiIt is temporary
I-th of value in n of state dash current I.
Further:The second gaussian coefficient ε is indicated with following formula:
Wherein:ζi=ln (avib i) indicate vibration acceleration avibN in i-th of value avib iNatural logrithm;IiIt is temporary
I-th of value in n of state dash current I.
Further:The first gaussian coefficient λ is indicated with following formula:
Wherein:ζi=ln (avib i) indicate vibration acceleration avibN in i-th of value avib iNatural logrithm;IiIt is temporary
I-th of value in n of state dash current I.
The present invention also provides the analogue systems that a kind of high voltage direct current equals anti-gas dynamic characteristic, the improvement is that:
Acquisition module, for obtaining straight transient shock current value in being instructed from straight-flow system;
Emulation module, for putting down anti-gas vibration protection characteristic model and transient state impact based on the direct current pre-established
Current value carries out simulation calculation, obtains high voltage direct current and puts down anti-gas dynamic characteristic response;
It includes flat using the description of Gauss regression algorithm that the direct current pre-established, which puts down anti-gas vibration protection characteristic model,
Non-linear coupling characteristic between anti-gas mechanical oscillation acceleration and transient shock current.
Further:Further include establishing module, anti-gas vibration protection characteristic model is put down for pre-establishing direct current;It is described
Establishing module includes:
Collecting unit, the history for acquiring straight-flow system put down anti-gas mechanical oscillation acceleration and history transient state impact electricity
Stream;
Obtaining unit, for using Gauss regression algorithm to put down anti-gas mechanical oscillation acceleration and transient shock current it
Between Non-linear coupling characteristic carry out simulation calculation, obtain gaussian coefficient;
Direct current, which is obtained, according to the gaussian coefficient puts down anti-gas vibration protection characteristic model.
Further:The direct current is put down anti-gas vibration protection characteristic model and is indicated with following formula:
Wherein:avibFor mechanical oscillation acceleration, I is transient shock current, and λ is the first gaussian coefficient, and ε is the second Gauss
Coefficient, γ are third gaussian coefficient.
Further:The third gaussian coefficient γ is indicated with following formula:
Wherein:ζi=ln (avib i) indicate vibration acceleration avibIt is N number of in i-th of value avib iNatural logrithm;IiIt is temporary
I-th of value in n of state dash current I.
Further:The second gaussian coefficient ε is indicated with following formula:
Further:The first gaussian coefficient λ is indicated with following formula:
Compared with the immediate prior art, technical solution provided by the invention has an advantageous effect in that:
Non-linear coupling dynamic characteristic of the technical solution provided by the invention to flat anti-gas mechanical oscillation and dash current
Fining simulation and decoupling are carried out, can be mutually compatible with electro-magnetic transient DC engineering algorithm, it can be with the practical work of pure electro-magnetic transient
Program-controlled guarantor's example carries out the pure Electromagnetic Simulation of alternating current-direct current power grid, and the electrical quantity such as alternating current-direct current electric network fault dash current can be described in detail
Dynamic change is multiple in Practical Project to the non-linear fast response characteristic of flat anti-gas mechanical oscillation acceleration non-electric quantity
The flat anti-gas malfunction occurred causes the crash analysis of direct current locking and failure to recur, prevent and equipment improves offer key skill
Art means, the various dimensions precision for further increasing direct current functionization Engineering Simulation have important practical significance.
Description of the drawings
Fig. 1 is the flow simple diagram for the emulation mode that high voltage direct current provided by the invention equals anti-gas dynamic characteristic;
Fig. 2 is that the flow for the emulation mode that high voltage direct current provided by the invention equals anti-gas dynamic characteristic is schemed in detail;
Fig. 3 is flat anti-gas I model contrast curves provided by the invention;
Fig. 4 is flat anti-gas II model contrast curves provided by the invention;
Fig. 5 is direct-current commutation failure transient shock current figure provided by the invention;
Fig. 6 is flat anti-gas dynamic vibration characteristics figure provided by the invention.
Specific implementation mode
The specific implementation mode of the present invention is described in further detail below in conjunction with the accompanying drawings.
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Put into practice them.Other embodiments may include structure, logic, it is electrical, process and other change.Embodiment
Only represent possible variation.Unless explicitly requested, otherwise individual component and function are optional, and the sequence operated can be with
Variation.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The range of bright embodiment includes equivalent obtained by the entire scope of claims and all of claims
Object.Herein, these embodiments of the invention can individually or generally be indicated that this is only with term " invention "
For convenience, it and if in fact disclosing the invention more than one, is not meant to automatically limit ranging from appointing for the application
What single invention or inventive concept.
Embodiment one,
The present invention provides the emulation mode that a kind of high voltage direct current equals anti-gas dynamic characteristic, and flow is as shown in Figure 1, packet
It includes:
S11, transient shock current value is obtained from straight-flow system instruction;
S12, put down based on the direct current pre-established anti-gas vibration protection characteristic model and the transient shock current value into
Row simulation calculation obtains high voltage direct current and puts down anti-gas dynamic characteristic response;Wherein, the direct current pre-established puts down anti-gas and shakes
Dynamic protection feature model include using the description of Gauss regression algorithm put down anti-gas mechanical oscillation acceleration and transient shock current it
Between Non-linear coupling characteristic.
High voltage direct current provided by the invention put down the emulation mode of anti-gas dynamic characteristic flow in detail figure as shown in Fig. 2,
Including:
Direct current equals anti-protection vibration characteristics, and to establish process as follows:Mechanical oscillation acceleration avibTransient state can be passed through
Dash current I carries out dynamical correlation characteristic calculating, IiBe electric current I N number of measurement data in i-th of value.
Wherein:λ is third gaussian coefficient, and ε is the second gaussian coefficient, and γ third gaussian coefficients are gaussian coefficients to be asked, two
While taking logarithm that can obtain:
It enables:
ζ=ln (avib) (6)
It enables:
Note:
Calculate partial derivative:
Expansion can obtain:
Coefficient matrix can be found out:
It can find out:
And then third gaussian coefficient can be found out, it is shown below:
Second gaussian coefficient, is shown below:
First gaussian coefficient, is shown below:
Wherein:ζi=ln (avib i) indicate vibration acceleration avibN in i-th of value avib iNatural logrithm;IiIt is temporary
I-th of value in n of state dash current I.
According to above-mentioned calculating, direct current can be established and put down anti-protection vibration characteristics model.
Embodiment two,
Here is that proposed above formula (1-18) puts down anti-protection vibration characteristics model calculation value in distinct device model
It is as shown in Figures 3 and 4 respectively with the contrast effect of measured data under parameter:
1 different parameters of table are equalled anti-gas test data and are compared with modelling effect
Parameter declaration in table:Max Error:Worst error;Min Error:Minimal error;SSE (and variance):The
Sum of squares due to error, are the quadratic sums of the error of fitting data and initial data corresponding points;R-square
(determining coefficient) is defined as the ratio of SSR and SST, SSR:Sum of squares of the regression, that is, predict
The quadratic sum of the difference of data and initial data mean value, SST:Total sum of squares, the i.e. difference of initial data and mean value
Quadratic sum;RMSE (root mean square):Root mean squared error, also make the fit standard of regression system poor, are MSE
Square root, MSE (mean square deviation):Mean squared error are squares that prediction data and initial data correspond to point tolerance
The mean value of sum;Adjusted R-square:The correction coefficient of determination, which refers to coefficient of determination R, can be used for evaluating the excellent of regression equation
It is bad, when being compared to the regression equation of two independents variable with different numbers, it is necessary to consider the change certainly that equation is included
The influence for measuring number, proposes thus, and so-called " Optimal Regression Equation refers to coefficient of determination the maximum of correction.
In the case of certain Practical Project example direct-current commutation failure, anti-protection is put down using this paper modelings are practical
Dynamic response comparison diagram difference between mechanical vibration performance and direct current dash current characteristic is as illustrated in Figures 5 and 6.By Fig. 5 and
Fig. 6 analogues value are consistent with engineering survey value dynamic characteristic, demonstrate the correctness of simulation model.
Embodiment three,
Based on same inventive concept, the present invention also provides the emulation systems that a kind of high voltage direct current equals anti-gas dynamic characteristic
System, including:
Acquisition module, for obtaining straight transient shock current value in being instructed from straight-flow system;
Emulation module, for putting down anti-gas vibration protection characteristic model and transient state impact based on the direct current pre-established
Current value carries out simulation calculation, obtains high voltage direct current and puts down anti-gas dynamic characteristic response;
It includes flat using the description of Gauss regression algorithm that the direct current pre-established, which puts down anti-gas vibration protection characteristic model,
Non-linear coupling characteristic between anti-gas mechanical oscillation acceleration and transient shock current.
Further:Further include establishing module, anti-gas vibration protection characteristic model is put down for pre-establishing direct current;It is described
Establishing module includes:
Collecting unit, the history for acquiring straight-flow system put down anti-gas mechanical oscillation acceleration and history transient state impact electricity
Stream;
Obtaining unit, for using Gauss regression algorithm to put down anti-gas mechanical oscillation acceleration and transient shock current it
Between Non-linear coupling characteristic carry out simulation calculation, obtain gaussian coefficient;
Direct current, which is obtained, according to the gaussian coefficient puts down anti-gas vibration protection characteristic model.
Further:The direct current is put down anti-gas vibration protection characteristic model and is indicated with following formula:
Wherein:avibFor mechanical oscillation acceleration, I is transient shock current, and λ is the first gaussian coefficient, and ε is the second Gauss
Coefficient, γ are third gaussian coefficient.
Further:The third gaussian coefficient γ is indicated with following formula:
Wherein:ζi=ln (avib i) indicate vibration acceleration avibIt is N number of in i-th of value avib iNatural logrithm;IiIt is temporary
I-th of value in n of state dash current I.
Further:The second gaussian coefficient ε is indicated with following formula:
Further:The first gaussian coefficient λ is indicated with following formula:
The present invention has carried out electricity to repeatedly causing the non-electric quantity equipment that direct current is latched to put down anti-protection in Practical Project
Gas correlation Dynamic Characteristic Modeling, for good with measured data contrast effect under distinct device model parameter, and and direct solenoid
Transient state engineering calculation is mutually compatible with, and key point is that the calculating step using formula (1-18) carries out direct current and puts down anti-gas mechanical oscillation
Acceleration and transient shock current carry out dynamical correlation characteristic modeling, establish the simulation model that direct current puts down anti-protection.It can be with
Flat anti-protection for different model and dynamic characteristic carries out simulation modeling, for flat anti-watt repeatedly occurred in Practical Project
Crash analysis and failure recurrence, the prevention and equipment improvement that this false protection causes direct current to be latched provide key technology means.
As thought carry out mathematical simulation modeling method all within protection scope of the present invention.
The present invention not only equals anti-protection vibration characteristics to direct current and models, and method is also to different voltages grade
It is transformer protection, high voltage reactor protection, middle pressure reactor protection, low tension reactor protection, controllable
Highly resistance protection, is all suitable for
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, the application can be used in one or more wherein include computer usable program code computer
The computer program production implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The application is with reference to method, the flow of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, although with reference to above-described embodiment pair
The present invention is described in detail, those of ordinary skill in the art still can to the present invention specific implementation mode into
Row modification either equivalent replacement these without departing from any modification of spirit and scope of the invention or equivalent replacement, applying
Within the claims of the pending present invention.
Claims (12)
1. a kind of high voltage direct current equals the emulation mode of anti-gas dynamic characteristic, it is characterised in that:
Transient shock current value is obtained from straight-flow system instruction;
Anti- gas vibration protection characteristic model is put down based on the direct current pre-established and the transient shock current value carries out emulation meter
It calculates, obtains high voltage direct current and put down anti-gas dynamic characteristic response;
Wherein, it includes flat using the description of Gauss regression algorithm that the direct current pre-established, which puts down anti-gas vibration protection characteristic model,
Non-linear coupling characteristic between anti-gas mechanical oscillation acceleration and transient shock current.
2. emulation mode as described in claim 1, it is characterised in that:The direct current puts down anti-gas vibration protection characteristic model
It is as follows to establish process:
The history of acquisition straight-flow system puts down anti-gas mechanical oscillation acceleration and history transient shock current;
It is special to flat Non-linear coupling between anti-gas mechanical oscillation acceleration and transient shock current using Gauss regression algorithm
Property carry out simulation calculation, obtain gaussian coefficient;
Direct current, which is obtained, according to the gaussian coefficient puts down anti-gas vibration protection characteristic model.
3. emulation mode as claimed in claim 2, it is characterised in that:The direct current is put down anti-gas vibration protection characteristic model and is used
Following formula indicates:
Wherein:avibFor mechanical oscillation acceleration, I is transient shock current, and λ is the first gaussian coefficient, and ε is the second gaussian coefficient,
γ is third gaussian coefficient.
4. emulation mode as claimed in claim 3, it is characterised in that:The third gaussian coefficient γ is indicated with following formula:
Wherein:ζi=ln (avib i) indicate vibration acceleration avibN in i-th of value avib iNatural logrithm;IiIt is transient state impact
I-th of value in n of electric current I.
5. emulation mode as claimed in claim 3, it is characterised in that:The second gaussian coefficient ε is indicated with following formula:
Wherein:ζi=ln (avib i) indicate vibration acceleration avibN in i-th of value avib iNatural logrithm;IiIt is transient state impact
I-th of value in n of electric current I.
6. emulation mode as claimed in claim 3, it is characterised in that:The first gaussian coefficient λ is indicated with following formula:
Wherein:ζi=ln (avib i) indicate vibration acceleration avibN in i-th of value avib iNatural logrithm;IiIt is transient state impact
I-th of value in n of electric current I.
7. a kind of high voltage direct current equals the analogue system of anti-gas dynamic characteristic, it is characterised in that:
Acquisition module, for obtaining straight transient shock current value in being instructed from straight-flow system;
Emulation module, for equalling anti-gas vibration protection characteristic model and the transient shock current based on the direct current pre-established
Value carries out simulation calculation, obtains high voltage direct current and puts down anti-gas dynamic characteristic response;
It includes flat anti-watt using the description of Gauss regression algorithm that the direct current pre-established, which puts down anti-gas vibration protection characteristic model,
Non-linear coupling characteristic between this mechanical oscillation acceleration and transient shock current.
8. analogue system as claimed in claim 7, it is characterised in that:Further include establishing module, it is flat for pre-establishing direct current
Anti- gas vibration protection characteristic model;The module of establishing includes:
Collecting unit, the history for acquiring straight-flow system put down anti-gas mechanical oscillation acceleration and history transient shock current;
Obtaining unit, for using Gauss regression algorithm to flat between anti-gas mechanical oscillation acceleration and transient shock current
Non-linear coupling characteristic carries out simulation calculation, obtains gaussian coefficient;
Direct current, which is obtained, according to the gaussian coefficient puts down anti-gas vibration protection characteristic model.
9. emulation mode as claimed in claim 8, it is characterised in that:The direct current is put down anti-gas vibration protection characteristic model and is used
Following formula indicates:
Wherein:avibFor mechanical oscillation acceleration, I is transient shock current, and λ is the first gaussian coefficient, and ε is the second gaussian coefficient,
γ is third gaussian coefficient.
10. analogue system as claimed in claim 9, it is characterised in that:The third gaussian coefficient γ is indicated with following formula:
Wherein:ζi=ln (avib i) indicate vibration acceleration avibIt is N number of in i-th of value avib iNatural logrithm;IiIt is transient state impact
I-th of value in n of electric current I.
11. analogue system as claimed in claim 9, it is characterised in that:The second gaussian coefficient ε is indicated with following formula:
12. analogue system as claimed in claim 9, it is characterised in that:The first gaussian coefficient λ is indicated with following formula:
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102035260A (en) * | 2010-12-17 | 2011-04-27 | 国电南瑞科技股份有限公司 | Intelligent warning and fault analysis realizing method for intelligent transformer substation monitoring system |
CN104834781A (en) * | 2015-05-08 | 2015-08-12 | 国网河南省电力公司电力科学研究院 | Transient temperature field simulation method based on multiple commutation failures of smoothing reactor |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN102035260A (en) * | 2010-12-17 | 2011-04-27 | 国电南瑞科技股份有限公司 | Intelligent warning and fault analysis realizing method for intelligent transformer substation monitoring system |
CN104834781A (en) * | 2015-05-08 | 2015-08-12 | 国网河南省电力公司电力科学研究院 | Transient temperature field simulation method based on multiple commutation failures of smoothing reactor |
Non-Patent Citations (1)
Title |
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杨光亮等: "高压直流输电控制保护多重化分析", 电力系统自动化, vol. 34, no. 15, 10 August 2010 (2010-08-10), pages 85 - 90 * |
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