CN103810643A - Voltage sag level quantification method and device - Google Patents
Voltage sag level quantification method and device Download PDFInfo
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- CN103810643A CN103810643A CN201210460493.8A CN201210460493A CN103810643A CN 103810643 A CN103810643 A CN 103810643A CN 201210460493 A CN201210460493 A CN 201210460493A CN 103810643 A CN103810643 A CN 103810643A
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Abstract
The invention provides a voltage sag level quantification method and device. The voltage sag level quantification method comprises obtaining the voltage sag event information of a monitoring point and performing level quantification on voltage sags of a user according to the voltage sag event information, wherein the monitoring point belongs to the user. The level quantification is performed on the voltage sags of the user according to the voltage sag event information after the voltage sag event information is obtained and accordingly the problem that voltage sag evaluation methods in related technologies are poor in applicability is solved and accordingly the sensitive degree of power user device to the voltage sags and the energy loss degree of the voltage sags of power systems are comprehensively considered and responsibilities and obligations of both sides are reflected. The voltage sag level quantification method and device is simple and practicable, the operability is strong, and accordingly the voltage sag conditions of the monitoring point or the user can be accurately and reasonably reflected and a scientific basis can be provided when a power supply department and power users need to understand the state of the quality of the power supply electric energy and take reasonable measures.
Description
Technical field
The present invention relates to quality of power supply technical field, in particular to a kind of grade quantizing method and device of voltage dip.
Background technology
Voltage dip (comprise in short-term and interrupting) is one of main power quality problem, can bring huge economic loss to user.Report according to Europe " Leonardo quality of power supply working group (LPQI) " issue in 2007 shows, accepts the industrial sector of investigation because losing up to 1,500 hundred million Euros in the year that the quality of power supply causes.Wherein, the loss that voltage dip (comprising that short time voltage interrupts) causes accounts for 60% of industrial sample total losses.Therefore the monitoring record based on voltage dip, rationally carries out assessment and the evaluation of voltage dip, takes appropriate voltage dip mitigation strategy significant to promoting.
Electric system generation voltage dip phenomenon is that inevitably user should have antijamming capability to the not serious voltage dip of the overwhelming majority, and power supply department also needs to improve electric system and protection configuration thereof as far as possible, and the impact that user is subject to is as far as possible little.Therefore assessing the impact that voltage dip causes need to consider from two aspects, i.e. disappearance voltage degree and the duration of system side generation voltage dip, the sensitivity of subscriber equipment to voltage dip.The voltage dip sensitivity of equipment generally represents with residual voltage amplitude and the duration curve of voltage dip, i.e. the voltage-tolerance curve of equipment.According to voltage-tolerance curve, the equipment of can specifying is to voltage dip tolerance range.
The evaluation index of voltage dip and method still under study for action, are not also built consensus both at home and abroad.Except the statistics of the voltage dip frequency, wherein main research index has two classes, i.e. voltage dip severity index and fall temporarily energy indexes.Voltage dip severity index just, from the angle of sensitive equipment, is investigated tolerance and influenced result to voltage dip; Falling temporarily energy indexes just considers from the have a power failure angle of disappearance energy of the equivalence of electric system generation voltage dip, and being subject to fall temporarily the duration affects from the span of millisecond to 1 minute, and make assessment result dispersion large, be difficult to realize the contrast of voltage dip quality between different monitoring points or user.Therefore, the appraisal procedure of the voltage dip in correlation technique can only be for sensitive equipment, its restricted application, and also assessment result dispersion is poor, and the appraisal procedure applicability of the voltage dip in correlation technique is poor.
For the appraisal procedure of voltage dip in correlation technique problem poor for applicability, effective solution is not yet proposed at present.
Summary of the invention
The present invention aims to provide a kind of grade quantizing method and device of voltage dip, can solve the appraisal procedure of voltage dip problem poor for applicability in correlation technique.
According to an aspect of the present invention, provide a kind of grade quantizing method of voltage dip, the method comprises: the voltage dip event information that obtains monitoring point; According to this voltage dip event information, the voltage dip of user under above-mentioned monitoring point is carried out to grade quantizing.
According to above-mentioned voltage dip event information, above-mentioned user's voltage dip is carried out to grade quantizing and comprise: according to above-mentioned voltage dip event information, determine the voltage dip overall target of monitoring point; Above-mentioned user Ge road powering quantity is weighted; According to the voltage dip overall target of above-mentioned weighted results and above-mentioned monitoring point, determine user's voltage dip overall target; According to above-mentioned user's voltage dip overall target, determine above-mentioned user's voltage dip grade.
According to above-mentioned voltage dip event information, determine that the voltage dip overall target of above-mentioned monitoring point comprises: according to above-mentioned voltage dip event information, determine the comprehensive parameter of voltage dip of single incident; According to the comprehensive parameter of the voltage dip of above-mentioned single incidents all in the assessment cycle of above-mentioned monitoring point, determine the voltage dip overall target of above-mentioned monitoring point.
According to above-mentioned voltage dip event information, determine that the comprehensive parameter of voltage dip of above-mentioned single incident comprises: according to above-mentioned voltage dip event information, determine that energy indexes falls in the single incident of monitoring point temporarily; According to user's voltage dip sensitivity curve, determine that severity falls in the single incident of monitoring point temporarily; Fall temporarily energy indexes and severity falls in above-mentioned single incident temporarily according to above-mentioned monitoring point single incident, calculate based on weighted sum natural logarithm, determine the comprehensive parameter of voltage dip of above-mentioned single incident.
According to above-mentioned voltage dip event information, after determining the voltage dip overall target of above-mentioned monitoring point, said method also comprises: according to the voltage dip overall target of above-mentioned monitoring point, determine the voltage dip grade of above-mentioned monitoring point.
According to above-mentioned voltage dip event information, after determining the comprehensive parameter of voltage dip of above-mentioned single incident, said method also comprises: according to the comprehensive parameter of the voltage dip of above-mentioned single incident, determine the menace level of single incident.
The voltage dip event information of above-mentioned monitoring point comprises: the shape information of voltage and current, and the parameter informations such as event start time, temporary range of decrease value, duration fall temporarily.
According to another aspect of the present invention, provide a kind of grade quantizing device of voltage dip, this device comprises: acquisition of information module, for obtaining the voltage dip event information of monitoring point; Grade quantizing module, for the voltage dip event information obtaining according to above-mentioned acquisition of information module, carries out grade quantizing to the voltage dip of user under above-mentioned monitoring point.
Above-mentioned grade quantizing module comprises: overall target is determined submodule, for according to above-mentioned voltage dip event information, determines the voltage dip overall target of monitoring point; User gradation is determined submodule, for determine the voltage dip overall target of the definite above-mentioned monitoring point of submodule according to above-mentioned overall target, determines above-mentioned user's voltage dip grade.
Above-mentioned overall target determines that submodule comprises: comprehensive parameter determining unit, for according to above-mentioned voltage dip event information, determine the comprehensive parameter of voltage dip of single incident; Overall target determining unit, for according to the comprehensive parameter of voltage dip of the definite above-mentioned single incident of above-mentioned comprehensive parameter determining unit, determines the voltage dip overall target of above-mentioned monitoring point.
Above-mentioned user gradation determines that submodule comprises: weighted units, for above-mentioned user Ge road powering quantity is weighted; User's overall target determining unit, for according to the voltage dip overall target of above-mentioned weighted results and above-mentioned monitoring point, determines user's voltage dip overall target; User gradation determining unit, for according to the definite above-mentioned user's of above-mentioned user's overall target determining unit voltage dip overall target, determines above-mentioned user's voltage dip grade.
By the present invention, getting after voltage dip event information, according to this voltage dip event information, user's voltage dip is carried out to grade quantizing, solve the appraisal procedure of voltage dip problem poor for applicability in correlation technique, thereby the sensitivity of power consumer equipment to voltage dip and the energy disappearance degree of electric system generation voltage dip are considered as a whole, responsibilities of the parties and obligation are embodied, and simple, workable, can reflect reasonably and accurately monitoring point or user's voltage sag condition, for power supply department and power consumer understanding confession electricity consumption quality of power supply situation, and take rational control measures that the foundation of science is provided.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the process flow diagram of the grade quantizing method of the voltage dip of the embodiment of the present invention;
Fig. 2 is the appraisal procedure process flow diagram according to the voltage dip of the embodiment of the present invention;
Fig. 3 is according to the structured flowchart of the grade quantizing device of the voltage dip of the embodiment of the present invention;
Fig. 4 is according to the preferred structure block diagram of the grade quantizing device of the voltage dip of the embodiment of the present invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.
The embodiment of the present invention provides a kind of grade quantizing method and device of voltage dip, according to voltage dip event and the waveform thereof of power quality analyzer monitoring record, proposition considers the evaluation index that falls temporarily the order of severity and fall temporarily energy, the order of severity of the voltage dip occurring in the impact of comprehensive balance voltage dip on sensitive equipment and electric system, thus realize the valid metric of voltage dip.Describe in detail below by specific embodiment.
The present embodiment provides a kind of grade quantizing method of voltage dip, and Fig. 1 is according to the process flow diagram of the grade quantizing method of the voltage dip of the embodiment of the present invention, and as shown in Figure 1, this flow process comprises the following steps (step S102-step S104):
Step S102, obtains the voltage dip event information of monitoring point;
Step S104, according to above-mentioned voltage dip event information, carries out grade quantizing to the voltage dip of user under above-mentioned monitoring point.
Pass through said method, getting after voltage dip event information, according to this voltage dip event information, user's voltage dip is carried out to grade quantizing, solve the appraisal procedure of voltage dip problem poor for applicability in correlation technique, thereby the sensitivity of power consumer equipment to voltage dip and the energy disappearance degree of electric system generation voltage dip are considered as a whole, responsibilities of the parties and obligation are embodied, and simple, workable, can reflect reasonably and accurately monitoring point or user's voltage sag condition, for power supply department and power consumer understanding confession electricity consumption quality of power supply situation, and take rational control measures that the foundation of science is provided.
In above-mentioned steps S102, preferably, the voltage dip event information that obtains monitoring point can comprise: the voltage dip event information that obtains the monitoring point in cycle evaluation time.This cycle evaluation time can be set to one month, a season or 1 year.The voltage dip event information of above-mentioned monitoring point can comprise: the waveform of voltage and current, the parameter information of voltage and current.
For above-mentioned steps S104, according to voltage dip event information, user's voltage dip is carried out to grade quantizing, can realize by following preferred implementation: according to voltage dip event information, determine the voltage dip overall target of monitoring point; According to the voltage dip overall target of above-mentioned monitoring point, determine user's voltage dip grade.Which is simple, workable.
In the preferred implementation of the present embodiment, according to voltage dip event information, determine that the voltage dip overall target of monitoring point comprises: according to voltage dip event information, determine the comprehensive parameter of voltage dip of single incident; According to the comprehensive parameter of the voltage dip of single incident, determine the voltage dip overall target of monitoring point.Which is simple, workable.
In the preferred implementation of the present embodiment, according to voltage dip event information, determine that the comprehensive parameter of voltage dip of single incident comprises: according to voltage dip event information, that determines monitoring point falls energy indexes temporarily; According to user's voltage dip sensitivity curve, that determines single incident falls severity temporarily; According to above-mentioned monitoring point energy indexes and above-mentioned single incident fall temporarily and severity falls temporarily, determine the comprehensive parameter of voltage dip of single incident.Which is simple, workable.
In the preferred implementation of the present embodiment, according to voltage dip event information, determine that the energy indexes that falls temporarily of monitoring point comprises: according to voltage dip event information, that determines single incident falls energy temporarily; According to single incident energy falls temporarily, that determines above-mentioned monitoring point falls energy indexes temporarily.Which is simple, workable.
For according to the voltage dip overall target of monitoring point, determine user's voltage dip grade, can realize by following preferred implementation: user Ge road powering quantity is weighted; According to the voltage dip overall target of weighted results and monitoring point, determine user's voltage dip overall target; According to user's voltage dip overall target, determine user's voltage dip grade.Which is simple, workable.
Describe the preferred implementation process of voltage dip grade of determining user above in detail, can reflect reasonably and accurately that situation falls in monitoring point or user's electric energy temporarily.In the process of voltage dip grade of determining user, preferably, also can determine the voltage dip grade of monitoring point and the voltage dip grade of single incident.Based on this, the present embodiment provides a kind of preferred implementation, according to voltage dip event information, after determining the voltage dip overall target of monitoring point, said method also comprises: according to the voltage dip overall target of monitoring point, determine the voltage dip grade of monitoring point.According to voltage dip event information, after determining the comprehensive parameter of voltage dip of single incident, said method also comprises: according to the comprehensive parameter of the voltage dip of single incident, determine the menace level of single incident.By the way, can reflect reasonably and accurately that situation falls in monitoring point or user's electric energy temporarily, be power supply department and power consumer understanding confession electricity consumption quality of power supply situation, and take rational control measures that the foundation of science is provided.
The flow process of the appraisal procedure to voltage dip describes in detail below.The feature of the appraisal procedure of voltage dip based on voltage dip monitoring and statistics and the index result of assessment, realize monitoring point level and the grade quantizing containing the Problem of Voltage Temporary-Drop of the user class of many monitoring points, thereby correspondingly whether need the suggestion of administering or arousing attention that foundation is provided for follow-up providing.Fig. 2 is the appraisal procedure process flow diagram according to the voltage dip of the embodiment of the present invention, and as shown in Figure 2, the method comprises the following steps (step S202-step S212):
Step S202, obtains monitoring point and the voltage dip event information in cycle evaluation time.
In this step, obtain evaluated monitoring point and every voltage dip logout in the time period, comprise the voltage and current waveform of its record, and typical parameter information: start time, range of decrease value, duration etc. temporarily.
Above-mentioned cycle evaluation time can be the moon, season, year or other, but herein, for provide that monitoring point and user experience monthly or the Variation Features that occurs of every seasonal voltage dip event, and consider that the factors such as the monthly form of assessing with stationary power quality coordinates, recommend adoption assessment cycle are the moon.
Step S204, for each event of record, calculate one by one single incident energy and monitoring point fall temporarily and energy indexes falls temporarily.
The energy indexes that falls temporarily that falls temporarily energy and monitoring point of single incident calculates as follows:
Energy E falls in single incident temporarily
vS(i)=(1-U
sag(i))
2× T (i) (1)
Wherein EVS(i) the i time energy value falls temporarily, and Usag is voltage dip amplitude, pu., T is the duration.
Energy indexes falls in monitoring point temporarily
Energy indexes on average falls in monitoring point temporarily
Wherein, SARFI90 is the number of times that in measurement period, range of decrease value is less than 90% temporarily.
Step S206, the user's voltage dip sensitivity curve (similar with ITIC curve) based on definition, calculate one by one single incident severity and monitoring point fall temporarily and severity index falls temporarily.
The severity index of falling temporarily of falling temporarily severity and monitoring point of single incident is calculated as follows:
Single incident severity falls temporarily
Wherein Se(i) the i time severity, Usag(i fall temporarily) be voltage dip amplitude, pu., Uref (Ti) is the voltage dip amplitude in corresponding equipment voltage dip tolerance curve of falling temporarily duration T i.
Severity index falls in monitoring point temporarily
Severity index on average falls in monitoring point temporarily
Step S208, calculates one by one the comprehensive parameter of voltage dip of single incident, and provides single incident menace level.Wherein, the comprehensive parameter of this voltage dip is to consider the comprehensive parameter of voltage dip that falls temporarily severity and fall temporarily energy.
In this step, the comprehensive parameter of single voltage dip event has been divided to rate range, based on the comprehensive Parameters Calculation result to each voltage dip event, can realize the grade evaluation result of single incident.
The comprehensive Parameters Calculation of single incident voltage dip is as follows:
The comprehensive parameter CVS(i of the i time voltage dip) C
vS(i)=Se (i)+W
iln (E
vS(i)) (7)
Wi value is for falling temporarily the energy weight factor, and corresponding different falls time T value temporarily in table 1.
Table 1
Fall temporarily for primary voltage, the grade classification based on Cvs is as table 2.
Table 2
| Between Cvs graded region | Cvs<2 | 2≤Cvs<3 | 3≤Cvs<4 | 4≤Cvs<6 | 6≤Cvs |
| Grade | I level | II level | III level | IV level | V level |
Step S210, calculates the voltage dip overall target of the monitoring point in the monitoring and evaluation cycle, and provides monitoring point voltage dip grade.
In this step, fall temporarily at single incident on the basis of comprehensive parameter, the voltage dip overall target towards monitoring point has been proposed.
Monitoring point voltage dip overall target is calculated as follows:
Falling temporarily overall target CVSI is
Wherein, for the tightness of calculation procedure, when Cvs is when negative, value is zero.
Step S212, the user who all monitors for multiple-way supply Qie Mei road, An Ge road powering quantity is weighted, and calculates user's voltage dip overall target, and provides user's voltage dip grade.
Falling temporarily index for the user of multiple-way supply multiple spot monitoring is calculated as follows:
Overall target falls in user temporarily
Wherein,
be m monitoring point monthly average active power, N is the monitoring point basic data number in this month, and P (i) is the basic data of i active power monitoring.
for this user's of that month total mean power; What CVSI (m) was this user m monitoring point in statistics month falls overall target temporarily.
In step S210 and step S212, consider that the feature of 1～2 time occurs the voltage dip average that measurement period is month, monitoring point and user's voltage dip grade classification is as follows:
IF CVSI>=6THEN monitoring point severity V level, seriously needs to administer.
IF4≤CVSI<6THEN monitoring point severity IV level, more seriously needs to pay attention to.
IF3≤CVSI<4THEN monitoring point severity III level, need arouse attention.
IF2≤CVSI<3THEN monitoring point severity II level, need be careful.
IF CVSI<2THEN monitoring point severity is I level, need be careful.
The present embodiment is at existing voltage dip severity and fall temporarily on the basis of energy, has defined a comprehensive parameter weighing voltage dip single incident, and this parameter combines and falls temporarily severity and fall temporarily energy; In the very large feature of dispersion of considering to fall temporarily energy, the voltage dip of various durations is carried out to rational weighting setting; Consider and fall temporarily the dispersion of duration in Millisecond and second level (in 1 minute) time scale, in the time of COMPREHENSIVE CALCULATING, adopted the account form of natural logarithm to falling temporarily energy.
In the present embodiment, for the Variation Features showing monthly or every seasonal voltage dip event occurs, and consider that the factors such as the monthly form of assessing with stationary power quality coordinates, recommend adoption assessment cycle are the moon, and the measurement period that general monitoring point statistical estimation more often uses is year; The statistical nature occurring based on monthly voltage dip, has divided rate range to the voltage dip overall target of monitoring point, can provide monitoring point voltage dip grade evaluation result and relevant improvement requirement.
The grade quantizing method of the voltage dip of introducing based on above-described embodiment, the present embodiment provides a kind of grade quantizing device of voltage dip, and this device is used for realizing above-described embodiment.Fig. 3 is according to the structured flowchart of the grade quantizing device of the voltage dip of the embodiment of the present invention, and as shown in Figure 3, this device comprises: acquisition of information module 10 and grade quantizing module 20.Below this structure is elaborated.
Acquisition of information module 10, for obtaining the voltage dip event information of monitoring point;
Pass through said apparatus, acquisition of information module 10 gets after voltage dip event information, grade quantizing module 20 is carried out grade quantizing according to this voltage dip event information to user's voltage dip, solve the appraisal procedure of voltage dip problem poor for applicability in correlation technique, thereby the sensitivity of power consumer equipment to voltage dip and the energy disappearance degree of electric system generation voltage dip are considered as a whole, responsibilities of the parties and obligation are embodied, and simple, workable, can reflect reasonably and accurately monitoring point or user's voltage sag condition, for power supply department and power consumer understanding confession electricity consumption quality of power supply situation, and take rational control measures that the foundation of science is provided.
In above-mentioned acquisition of information module 10, preferably, acquisition of information module 10 can comprise: acquisition of information submodule, and for obtaining the voltage dip event information of the above-mentioned monitoring point in cycle evaluation time.This cycle evaluation time can be set to one month, a season or 1 year.The voltage dip event information of above-mentioned monitoring point can comprise: the waveform of voltage and current, the parameter information of voltage and current.
Fig. 4 is according to the preferred structure block diagram of the grade quantizing device of the voltage dip of the embodiment of the present invention, as shown in Figure 4, this device is except the modules that comprises above-mentioned Fig. 3 and introduce, and above-mentioned grade quantizing module 20 also comprises: overall target determines that submodule 22 and user gradation determine submodule 24.Below this structure is elaborated.
Overall target is determined submodule 22, for according to above-mentioned voltage dip event information, determines the voltage dip overall target of monitoring point;
User gradation is determined submodule 24, is connected to overall target and determines submodule 22, for determine the voltage dip overall target of the definite above-mentioned monitoring point of submodule according to above-mentioned overall target, determines above-mentioned user's voltage dip grade.This is simple for structure, workable.
In the preferred implementation of the present embodiment, above-mentioned overall target determines that submodule comprises: comprehensive parameter determining unit, for according to above-mentioned voltage dip event information, determine the comprehensive parameter of voltage dip of single incident; Overall target determining unit, for according to the comprehensive parameter of voltage dip of the definite above-mentioned single incident of above-mentioned comprehensive parameter determining unit, determines the voltage dip overall target of above-mentioned monitoring point.This is simple for structure, workable.
In the preferred implementation of the present embodiment, above-mentioned comprehensive parameter determining unit comprises: energy indexes is determined subelement, and for according to above-mentioned voltage dip event information, that determines monitoring point falls energy indexes temporarily; Severity is determined subelement, and for according to user's voltage dip sensitivity curve, that determines single incident falls severity temporarily; Comprehensive parameter is determined subelement, for determine according to above-mentioned energy indexes above-mentioned monitoring point that subelement determines above-mentioned single incident that energy indexes and above-mentioned severity determine that subelement determines falls temporarily and severity falls temporarily, determine the comprehensive parameter of voltage dip of above-mentioned single incident.This is simple for structure, workable.
In the preferred implementation of the present embodiment, above-mentioned energy indexes determines that subelement comprises: fall temporarily quantum of energy unit, for according to above-mentioned voltage dip event information, that determines single incident falls energy temporarily; Energy indexes subelement falls temporarily, for according to above-mentioned the above-mentioned single incident determined quantum of energy unit falls temporarily and energy falls temporarily, that determines above-mentioned monitoring point falls energy indexes temporarily.This is simple for structure, workable.
Determine that for user gradation submodule is according to the voltage dip overall target of monitoring point, determine user's voltage dip grade, can realize by following preferred implementation: above-mentioned user gradation determines that submodule comprises: weighted units, for above-mentioned user Ge road powering quantity is weighted; User's overall target determining unit, for according to the voltage dip overall target of above-mentioned weighted results and above-mentioned monitoring point, determines user's voltage dip overall target; User gradation determining unit, for according to the definite above-mentioned user's of above-mentioned user's overall target determining unit voltage dip overall target, determines above-mentioned user's voltage dip grade.This is simple for structure, workable.
Describe the voltage dip grade preferred structure of determining user above in detail, can reflect reasonably and accurately that situation falls in monitoring point or user's electric energy temporarily.In the process of voltage dip grade of determining user, preferably, also can determine the voltage dip grade of monitoring point and the voltage dip grade of single incident.Based on this, the present embodiment provides a kind of preferred implementation, and above-mentioned grade quantizing module 20 also comprises: monitoring point classification submodule, for according to the voltage dip overall target of above-mentioned monitoring point, determine the voltage dip grade of above-mentioned monitoring point.Above-mentioned overall target determines that submodule also comprises: single incident classification unit, for according to the comprehensive parameter of the voltage dip of above-mentioned single incident, determine the menace level of single incident.By said structure, can reflect reasonably and accurately that situation falls in monitoring point or user's electric energy temporarily, be power supply department and power consumer understanding confession electricity consumption quality of power supply situation, and take rational control measures that the foundation of science is provided.
As can be seen from the above description, the above embodiments of the present invention are take monitoring point voltage dip monitoring record as basis, propose voltage dip overall target and realized its grade quantizing assessment, the sensitivity of power consumer equipment to voltage dip and the energy disappearance degree of electric system generation voltage dip are considered as a whole, comprehensive reasonable is considered to feature and the correlated quality responsibility of electric power system generation voltage dip, fall temporarily sensitivity and correlated quality responsibility with the equipment of power consumer, embodied responsibilities of the parties and obligation.And simple, workable, can reasonably reflect that situation falls in monitoring point or user's electric energy temporarily, for power supply department and power consumer are understood for electricity consumption quality of power supply situation and take rational control measures that the foundation of science is provided.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that multiple calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby they can be stored in memory storage and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or the multiple modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (11)
1. a grade quantizing method for voltage dip, is characterized in that, comprising:
Obtain the voltage dip event information of monitoring point;
According to described voltage dip event information, the voltage dip of user under described monitoring point is carried out to grade quantizing.
2. method according to claim 1, is characterized in that, according to described voltage dip event information, described user's voltage dip is carried out to grade quantizing and comprise:
According to described voltage dip event information, determine the voltage dip overall target of monitoring point;
Described user Ge road powering quantity is weighted;
According to the voltage dip overall target of described weighted results and described monitoring point, determine user's voltage dip overall target;
According to described user's voltage dip overall target, determine described user's voltage dip grade.
3. method according to claim 2, is characterized in that, according to described voltage dip event information, determines that the voltage dip overall target of described monitoring point comprises:
According to described voltage dip event information, determine the comprehensive parameter of voltage dip of single incident;
According to the comprehensive parameter of the voltage dip of described single incidents all in the assessment cycle of described monitoring point, determine the voltage dip overall target of described monitoring point.
4. method according to claim 3, is characterized in that, according to described voltage dip event information, determines that the comprehensive parameter of voltage dip of described single incident comprises:
According to described voltage dip event information, determine that energy indexes falls in the single incident of monitoring point temporarily;
According to user's voltage dip sensitivity curve, determine that severity falls in the single incident of monitoring point temporarily;
Fall temporarily energy indexes and severity falls in described single incident temporarily according to described monitoring point single incident, calculate based on weighted sum natural logarithm, determine the comprehensive parameter of voltage dip of described single incident.
5. method according to claim 2, is characterized in that, according to described voltage dip event information, after determining the voltage dip overall target of described monitoring point, described method also comprises:
According to the voltage dip overall target of described monitoring point, determine the voltage dip grade of described monitoring point.
6. method according to claim 3, is characterized in that, according to described voltage dip event information, after determining the comprehensive parameter of voltage dip of described single incident, described method also comprises:
According to the comprehensive parameter of the voltage dip of described single incident, determine the menace level of single incident.
7. according to the method described in any one in claim 1 to 6, it is characterized in that, the voltage dip event information of described monitoring point comprises: the shape information of voltage and current, and the parameter informations such as event start time, temporary range of decrease value, duration fall temporarily.
8. a grade quantizing device for voltage dip, is characterized in that, comprising:
Acquisition of information module, for obtaining the voltage dip event information of monitoring point;
Grade quantizing module, for the described voltage dip event information obtaining according to described acquisition of information module, carries out grade quantizing to the voltage dip of user under described monitoring point.
9. device according to claim 8, is characterized in that, described grade quantizing module comprises:
Overall target is determined submodule, for according to described voltage dip event information, determines the voltage dip overall target of monitoring point;
User gradation is determined submodule, for determine the voltage dip overall target of the definite described monitoring point of submodule according to described overall target, determines described user's voltage dip grade.
10. device according to claim 9, is characterized in that, described overall target determines that submodule comprises:
Comprehensive parameter determining unit, for according to described voltage dip event information, determines the comprehensive parameter of voltage dip of single incident;
Overall target determining unit, for according to the comprehensive parameter of voltage dip of the definite described single incident of described comprehensive parameter determining unit, determines the voltage dip overall target of described monitoring point.
11. devices according to claim 9, is characterized in that, described user gradation determines that submodule comprises:
Weighted units, for being weighted described user Ge road powering quantity;
User's overall target determining unit, for according to the voltage dip overall target of described weighted results and described monitoring point, determines user's voltage dip overall target;
User gradation determining unit, for according to the definite described user's of described user's overall target determining unit voltage dip overall target, determines described user's voltage dip grade.
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