CN106483393B - Configuration method and system are unified in harmonic wave and voltage dip monitoring point - Google Patents
Configuration method and system are unified in harmonic wave and voltage dip monitoring point Download PDFInfo
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- CN106483393B CN106483393B CN201510524318.4A CN201510524318A CN106483393B CN 106483393 B CN106483393 B CN 106483393B CN 201510524318 A CN201510524318 A CN 201510524318A CN 106483393 B CN106483393 B CN 106483393B
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Abstract
Configuration method and system are unified in a kind of harmonic wave and voltage dip monitoring point, obtain electric network information parameter；Voltage dip allocation plan is determined according to the electric network information parameter and voltage dip monitoring point allocation models；Judge whether the voltage dip allocation plan meets the whole network harmonic wave Observable constraint condition；If so, the voltage dip allocation plan is determined as unified allocation plan.When meeting the whole network harmonic wave Observable constraint condition due to the voltage dip allocation plan, the voltage dip allocation plan had not only met the voltage dip constraint condition of voltage dip monitoring point allocation models, but also met the whole network harmonic wave Observable constraint condition.Therefore the voltage dip allocation plan, which can be identified as unified allocation plan, can make the monitoring point for unifying allocation plan setting according to this, monitoring voltage can temporarily drop and two kinds of power quality situations of harmonic wave simultaneously.
Description
Technical field
The present invention relates to the unified configuration sides of power quality monitoring field more particularly to a kind of harmonic wave and voltage dip monitoring point
Method and system.
Background technique
The monitoring of power quality always is the key point and basic technology of research power quality problem, however huge electricity
Force system can not all install equipment for monitoring power quality in all nodes, be proposed inside and outside past Study of China big
The Optimal Configuration Method of the equipment for monitoring power quality of amount.The index of power quality generally comprise harmonic wave, voltage dip, rise sharply with
And voltage fluctuation, flickering etc., electric energy quality monitoring is mainly monitored the whole network, for the angle of electric energy quality monitoring,
It generally requires and comprehensively considers various problems.The guiding principle that the equipment for monitoring power quality that the country is proposed is distributed rationally
Mainly have: monitoring point being capable of all voltage class in covering system；Meet the requirement of power quality index adjustment and control；Meet
The basic demand of power quality especially meets the high requirement of sensibility load user.
At present in terms of the research of electric energy quality monitoring, that is, mainly single Monitoring Indexes or are estimated as with harmonic wave
Distributing rationally or being monitored optimization for voltage dip merely for monitoring object for background progress harmonic wave measuring point is matched
There is uneconomical, generation amount of redundancy and increase and calculate the time in the monitoring device set, but two indexs are separately configured.
Summary of the invention
Based on this, it is necessary to provide a kind of harmonic wave and electricity that can monitor two kinds of power quality situations of harmonic wave and voltage dip
Pressure temporarily unifies configuration method and system in drop monitoring point.
Configuration method is unified in a kind of harmonic wave and voltage dip monitoring point, comprising steps of
Obtain electric network information parameter；
Voltage dip allocation plan is determined according to the electric network information parameter and voltage dip monitoring point allocation models；
Judge whether the voltage dip allocation plan meets the whole network harmonic wave Observable constraint condition；
If so, the voltage dip allocation plan is determined as unified allocation plan.
A kind of harmonic wave and voltage dip monitoring point uniformly configure system, comprising:
Parameter acquisition module, for obtaining electric network information parameter；
Voltage schemes determining module, for being determined according to the electric network information parameter and voltage dip monitoring point allocation models
Voltage dip allocation plan；
Condition judgment module, for judging whether the voltage dip allocation plan meets the whole network harmonic wave Observable constraint item
Part；
Unified approach determining module, if the condition judgment module judges whether the voltage dip allocation plan meets entirely
Net harmonic wave Observable constraint condition, for the voltage dip allocation plan to be determined as unified allocation plan.
Configuration method and system are unified in above-mentioned harmonic wave and voltage dip monitoring point, according to the electric network information parameter and voltage
Temporarily drop monitoring point allocation models determines voltage dip allocation plan, and judges whether the voltage dip allocation plan meets the whole network
Harmonic wave Observable constraint condition, if so, the voltage dip allocation plan is determined as unified allocation plan.Due to the electricity
When the temporary drop allocation plan of pressure meets the whole network harmonic wave Observable constraint condition, the voltage dip allocation plan both meets voltage dip
The voltage dip constraint condition of monitoring point allocation models, and meet the whole network harmonic wave Observable constraint condition.Therefore by the voltage dip
Allocation plan, which can be identified as unified allocation plan, can make the monitoring point for unifying allocation plan setting according to this, can monitor simultaneously
Two kinds of power quality situations of voltage dip and harmonic wave.
Detailed description of the invention
Fig. 1 unifies the flow chart of configuration method for a kind of harmonic wave of embodiment and voltage dip monitoring point；
Fig. 2 unifies the flow chart of configuration method for the harmonic wave of another embodiment and voltage dip monitoring point；
Fig. 3 unifies the structure chart of configuration method for a kind of harmonic wave of embodiment and voltage dip monitoring point；
Fig. 4 unifies the structure chart of configuration method for the harmonic wave of another embodiment and voltage dip monitoring point.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give preferred embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more saturating
It is thorough comprehensive.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " or/and " it include one or more phases
Any and all combinations of the listed item of pass.
As shown in Figure 1, configuration method, including following step are unified in a kind of harmonic wave of embodiment and voltage dip monitoring point
It is rapid:
S110: electric network information parameter is obtained.
Electric network information parameter includes network topology and each component parameters of power grid, e.g., total node number, line parameter circuit value, load ginseng
Several and voltage device parameter.
S130: voltage dip configuration side is determined according to the electric network information parameter and voltage dip monitoring point allocation models
Case.
The step S130 in one of the embodiments, specifically: use discrete particle cluster algorithm, the power grid is believed
Cease input of the parameter as discrete particle cluster algorithm, using the value of the objective function of voltage dip monitoring point allocation models as
The fitness value of discrete particle cluster algorithm, using the voltage dip constraint condition of voltage dip monitoring point allocation models as from
The condition of convergence of shot swarm optimization determines voltage dip allocation plan.
In other embodiments, voltage dip allocation plan can also be determined using other algorithms, such as be suitble to processing from
Dissipate the genetic algorithm of data.But discrete cluster ion algorithm is not only suitable for processing discrete data, and its processing speed is fast.
S140: judge whether the voltage dip allocation plan meets the whole network harmonic wave Observable constraint condition.
Wherein, the whole network harmonic wave observable condition can be obtained according to the prior art.In one of the embodiments, in step
Before S140, further comprises the steps of: and obtain the whole network harmonic wave observable condition.
If so, the i.e. described voltage dip allocation plan meets the whole network harmonic wave Observable constraint condition, S150 is thened follow the steps.
S150: the voltage dip allocation plan is determined as unified allocation plan.
Since voltage dip allocation plan is true according to the electric network information parameter and voltage dip monitoring point allocation models
Fixed, therefore when judging that the voltage dip allocation plan meets the whole network harmonic wave Observable constraint condition, the voltage dip is matched
It sets scheme and had not only met the voltage dip constraint condition of voltage dip monitoring point allocation models, but also meet the constraint of the whole network harmonic wave Observable
Condition, therefore the voltage dip allocation plan can be identified as unified allocation plan.Unify the prison of allocation plan setting according to this
Measuring point monitoring voltage can temporarily drop and two kinds of power quality situations of harmonic wave simultaneously.
If referring to Fig. 2, judging that the voltage dip allocation plan is unsatisfactory for the whole network harmonic wave in one of the embodiments,
Observable constraint condition further includes step S160-S180 then after the step S140.
S160: the initial scheme configured using voltage dip monitoring point allocation plan as Detecting Power Harmonicies point, and maintenance voltage is temporary
It is constant to drop monitoring point, is at least harmonic wave objective function with Detecting Power Harmonicies point number, determines the minimum monitoring point number of harmonic wave.
In the present embodiment, harmonic wave objective function can be with are as follows:
Wherein, F is the target function value of monitoring point；M is the number of monitoring point；gindexiIt is seen for i-th the comprehensive of bus
Survey Capability index.
Electric network information parameter further includes the INTEGRATED SIGHT Capability index of every bus in one of the embodiments,.
In another embodiment, the INTEGRATED SIGHT Capability index gindex of bus can be determined according to the following formula.
Wherein, type indicates fault type, and type=1,2,3,4 respectively indicate three-phase shortcircuit, single-phase short circuit, line to line fault
And two-phase short circuit and ground fault, indexi,typeIndicate the observing capacity index under i-th bus fault type, p (type) table
Show the occurrence frequency of the fault type.As the above analysis, INTEGRATED SIGHT Capability index is smaller, indicates the monitoring energy of the bus
Power is better.
In one of the embodiments, observing capacity index index by fuzzy voltage dip Observable domain MMRA and
Mamdani fuzzy model determines.
MMRA includes I (In), B (Boundaries) and O (Out).I is completely in the fault point in monitoring region；B is in mould
Paste the fault point of threshold region；O includes monitoring points except region and higher than conventional threshold values.Formula is expressed as follows:
Wherein, i indicates node i, and j indicates fault point j；Type is fault type；UijIt is sag exposed areas matrix UdipIn the i-th row
The value of jth column, indicates the voltage effective value of node i when short trouble occurs for fault point j；It p.u. is that a unit indicates mark
Value.Specifically, sag exposed areas matrix UdipVoltage dip amplitude distribution under various short-circuit conditions can be calculated by electric network information parameter
Situation and determine.
By using MMRA, introducing observing capacity index index indicates the observing capacity of bus.Since each monitoring site is female
Whether voltage dip amplitude reliably within the scope of the bus Observable pairs is closely related for the observation of line, thus the size of index
It is determined by following three factors:
1) the smallest voltage dip value in Observable region；
2) voltage dip average value in Observable region；
3) maximum voltage dip value in Observable region.
The index of every bus is calculated by establishing Mamdani fuzzy model.In the present embodiment, using voltage
Input variable of the temporary decline maximum point max and voltage dip average value average as Mamdani fuzzy model, output
Variable is exactly the observing capacity index index of the bus.In order to be blurred input and output amount, make input variable voltage magnitude most
The fuzzy set of big value max and average value average is using the set distribution in MMRA: { I (In), B (Boundaries), O
(Out)}。
S170: it is determined according to the minimum monitoring point number of the harmonic wave and the monitoring point number of the voltage dip allocation plan
Newly-increased monitoring point number.
If there is n monitoring point in the voltage dip allocation plan, the minimum monitoring point number of harmonic wave is M, most due to harmonic wave
The determination of few monitoring point number is using voltage dip allocation plan as initial scheme, and temporarily to drop monitoring point constant for maintenance voltage
On the basis of carry out.Therefore the minimum monitoring point number M of harmonic wave is necessarily greater than the monitoring point number in voltage dip allocation plan
N needs M-n newly-increased monitoring points thus, it is possible to determine on the basis of the voltage dip allocation plan.
S180: the newly-increased monitoring point of newly-increased monitoring point number is sought on the basis of the voltage dip allocation plan
It is excellent to obtain optimizing result, and determine unified allocation plan according to the optimizing result or increase a newly-increased monitoring point and continue optimizing
Until determining unified allocation plan.
In the present embodiment, it can satisfy according to the newly-increased monitoring point of voltage dip allocation plan and newly-increased monitoring point number
The whole network harmonic wave Observable constraint condition determines optimizing result.It is described in one of the embodiments, to match in the voltage dip
It sets and the step of optimizing obtains optimizing result is carried out to the newly-increased monitoring point of newly-increased monitoring point number on the basis of scheme specifically: adopt
With discrete particle cluster algorithm, searching makes the monitoring point of voltage dip allocation plan and newly-increased monitoring point can satisfy the whole network harmonic wave can
The newly-increased monitoring point of the newly-increased monitoring point number of observational constraints condition.If finding, optimizing result is to seek；If not finding,
Optimizing result is not seek.
Specifically, searching process uses discrete particle cluster algorithm, and searching meets the new of the whole network harmonic wave Observable constraint condition
The newly-increased monitoring point for increasing monitoring point number, if finding, optimizing result is to seek, and increases this newly monitoring point number newly-increased at this time
Monitoring point and the monitoring point of voltage dip allocation plan are determined as the monitoring point of unified allocation plan.If having traversed all monitorings
Point, the newly-increased monitoring point for still not finding newly-increased monitoring point number can satisfy the whole network harmonic wave Observable constraint condition, then seek
Excellent result is not seek, at this point, being further added by a newly-increased monitoring point continues optimizing, until optimizing result is to seek.It is sought when described
When excellent scheme is unsatisfactory for the whole network harmonic wave Observable constraint condition, increases a monitoring point and continue optimizing；Until the optimizing scheme
When meeting the whole network harmonic wave Observable constraint condition, the optimizing scheme can be determined for unified allocation plan.
The step S180 could alternatively be in one of the embodiments: discrete particle cluster algorithm be used, by the electricity
The initial population of allocation plan and the newly-increased monitoring point as discrete particle cluster algorithm temporarily drops in pressure, and the harmonic wave is at least monitored
Fitness value of the value of the objective function of point number as discrete particle cluster algorithm, by the whole network harmonic wave Observable constraint condition
The condition of convergence as discrete particle cluster algorithm determines unified allocation plan.
Please continue to refer to Fig. 2, in one of the embodiments, before the step S130, further includes:
S120: voltage dip monitoring point allocation models is obtained, voltage dip monitoring point allocation models includes that voltage is temporary
Constraint condition and voltage dip objective function drop.
In the present embodiment, voltage dip objective function is by INTEGRATED SIGHT Capability index gindex and Sugeno fuzzy model
It establishes, specifically:
Wherein, n is voltage dip monitoring point number；It is every fuzzy rule for the output of Sugeno fuzzy model
The weighted average of output quantity, specifically:
ωkIt is the weight number of general rule shared by kth rule in fuzzy model output, numerical value is given birth to automatically by fuzzy system
At also can according to need sets itself.yk=a0 k+a1 kgindex1+…+an kgindexn.K is number of fuzzy rules；N is voltage
The temporarily number of drop monitoring point.an kFor the INTEGRATED SIGHT Capability index gindex of nth busnCoefficient, mould is obscured by Sugeno
The fuzzy rule of type, which changes, to be generated.
INTEGRATED SIGHT Capability index gindex in one of the embodiments,nIt is determined according to formula (2).In another reality
It applies in example, INTEGRATED SIGHT Capability index is one of electric network information parameter.
The voltage dip objective function, formula (4) can reflect current-configuration for the compound function of two multiplications simultaneously
The monitoring point number of scheme and the fine or not degree of scheme.Even if as can be seen that the situation identical in monitoring point number from function
Under, different configuration of objective function is not also identical, and the smaller program of objective function is better, so as to obtain optimal side
Case.
In the present embodiment, it can be monitored by a voltage dip to guarantee under any fault type each failure at least
Point observes, establishes voltage dip constraint condition.Network short calculating is carried out according to network topology first, according to network short meter
It calculates result and establishes global viewable survey matrix M=(MRA3p,MRA1p,MRA2p,MRA2pg), wherein subscript 3p, 1p, 2p and 2pg difference
Indicate three-phase shortcircuit, single-phase short circuit, line to line fault and two-phase short circuit and ground fault.The voltage dip constraint condition specifically:
Wherein, xiIndicate whether i-th bus installs monitoring device, xi=1 expression is mounted with monitoring device；xi=0
Expression is fitted without monitoring device；N is system busbar sum；F is fault point sum；M (i, j) indicates that fault point j breaks down
When bus i whether can observe point failure, the expression of M (i, j)=1, which can be observed, to be measured, and M (i, j)=0 indicates to observe.
Configuration method is unified in above-mentioned harmonic wave and voltage dip monitoring point, is supervised according to the electric network information parameter and voltage dip
Measuring point arrangement model determines voltage dip allocation plan, and judging whether the voltage dip allocation plan meets the whole network harmonic wave can
Observational constraints condition, if so, the voltage dip allocation plan is determined as unified allocation plan.Due to the voltage dip
When allocation plan meets the whole network harmonic wave Observable constraint condition, the voltage dip allocation plan had both met voltage dip monitoring point
The voltage dip constraint condition of allocation models, and meet the whole network harmonic wave Observable constraint condition.Therefore by the voltage dip configuration side
Case, which can be identified as unified allocation plan, can make the monitoring point for unifying allocation plan setting according to this, can simultaneously monitoring voltage it is temporary
Drop and two kinds of power quality situations of harmonic wave.
As shown in figure 3, a kind of harmonic wave of embodiment and voltage dip monitoring point uniformly configure system, comprising:
Parameter acquisition module 110, for obtaining electric network information parameter.
Electric network information parameter includes network topology and each component parameters of power grid, e.g., total node number, line parameter circuit value, load ginseng
Several and voltage device parameter.
Voltage schemes determining module 130, for according to the electric network information parameter and voltage dip monitoring point allocation models
Determine voltage dip allocation plan.
The voltage schemes determining module 130 is specifically used for using discrete particle cluster algorithm in one of the embodiments,
Using the electric network information parameter as the input of discrete particle cluster algorithm, by the target of voltage dip monitoring point allocation models
Fitness value of the value of function as discrete particle cluster algorithm, about by the voltage dip of voltage dip monitoring point allocation models
Beam condition determines voltage dip allocation plan as the condition of convergence of discrete particle cluster algorithm.
In other embodiments, voltage dip allocation plan can also be determined using other algorithms, such as be suitble to processing from
Dissipate the genetic algorithm of data.But discrete cluster ion algorithm is not only suitable for processing discrete data, and its processing speed is fast.
Condition judgment module 140, for judging whether the voltage dip allocation plan meets the whole network harmonic wave Observable about
Beam condition.
Wherein, the whole network harmonic wave observable condition can be obtained according to the prior art.In one of the embodiments, further includes:
Harmonic condition obtains module, for obtaining the whole network harmonic wave observable condition.
If so, the i.e. described condition judgment module 140 judges that voltage dip allocation plan meets the constraint of the whole network harmonic wave Observable
Condition then calls unified approach determining module 150.
Unified approach determining module 150, for the voltage dip allocation plan to be determined as unified allocation plan.
Since voltage dip allocation plan is true according to the electric network information parameter and voltage dip monitoring point allocation models
Fixed, therefore when judging that the voltage dip allocation plan meets the whole network harmonic wave Observable constraint condition, the voltage dip is matched
It sets scheme and had not only met the voltage dip constraint condition of voltage dip monitoring point allocation models, but also meet the constraint of the whole network harmonic wave Observable
Condition, therefore the voltage dip allocation plan can be identified as unified allocation plan.Unify the prison of allocation plan setting according to this
Measuring point monitoring voltage can temporarily drop and two kinds of power quality situations of harmonic wave simultaneously.
If referring to Fig. 4, the condition judgment module 140 judges that the voltage dip is matched in one of the embodiments,
The scheme of setting is unsatisfactory for the whole network harmonic wave Observable constraint condition, then calls harmonic wave and voltage dip monitoring point uniformly to configure system and include
With lower module:
Monitoring point number determining module 160, for what is configured using voltage dip monitoring point allocation plan as Detecting Power Harmonicies point
Initial scheme, and temporarily to drop monitoring point constant for maintenance voltage, is at least harmonic wave objective function with Detecting Power Harmonicies point number, determines harmonic wave
Minimum monitoring point number.
In the present embodiment, harmonic wave objective function can be with are as follows:
Wherein, F is the target function value of monitoring point；M is the number of monitoring point；gindexiIt is seen for i-th the comprehensive of bus
Survey Capability index.
Electric network information parameter further includes the INTEGRATED SIGHT Capability index of every bus in one of the embodiments,.
In another embodiment, the INTEGRATED SIGHT Capability index gindex of every bus can be determined according to the following formulai。
Wherein, type indicates fault type, and type=1,2,3,4 respectively indicate three-phase shortcircuit, single-phase short circuit, line to line fault
And two-phase short circuit and ground fault, indexi,typeIndicate the observing capacity index under i-th bus fault type, p (type) table
Show the occurrence frequency of the fault type.As the above analysis, INTEGRATED SIGHT Capability index is smaller, indicates the monitoring energy of the bus
Power is better.
In one of the embodiments, observing capacity index index by fuzzy voltage dip Observable domain MMRA and
Mamdani fuzzy model determines.
MMRA includes I (In), B (Boundaries) and O (Out).I is completely in the fault point in monitoring region；B is in mould
Paste the fault point of threshold region；O includes monitoring points except region and higher than conventional threshold values.Formula is expressed as follows:
Wherein, i indicates node i, and j indicates fault point j；Type is fault type；UijIt is sag exposed areas matrix UdipIn the i-th row
The value of jth column, indicates the voltage effective value of node i when short trouble occurs for fault point j；It p.u. is that a unit indicates mark
Value.Specifically, sag exposed areas matrix UdipVoltage dip amplitude distribution under various short-circuit conditions can be calculated by electric network information parameter
Situation and determine.
By using MMRA, introducing observing capacity index index indicates the observing capacity of bus.Since each monitoring site is female
Whether voltage dip amplitude reliably within the scope of the bus Observable pairs is closely related for the observation of line, thus the size of index
It is determined by following three factors:
1) the smallest voltage dip value in Observable region；
2) voltage dip average value in Observable region；
3) maximum voltage dip value in Observable region.
The index of every bus is calculated by establishing Mamdani fuzzy model.In the present embodiment, using voltage
Input variable of the temporary decline maximum point max and voltage dip average value average as Mamdani fuzzy model, output
Variable is exactly the observing capacity index index of the bus.In order to be blurred input and output amount, make input variable voltage magnitude most
The fuzzy set of big value max and average value average is using the set distribution in MMRA: { I (In), B (Boundaries), O
(Out)}。
Newly-increased point number determining module 170, for being matched according to the minimum monitoring point number of the harmonic wave and the voltage dip
The monitoring point number for setting scheme determines newly-increased monitoring point number.
If there is n monitoring point in the voltage dip allocation plan, the minimum monitoring point number of harmonic wave is M, most due to harmonic wave
The determination of few monitoring point number is using voltage dip allocation plan as initial scheme, and temporarily to drop monitoring point constant for maintenance voltage
On the basis of carry out.Therefore the minimum monitoring point number M of harmonic wave is necessarily greater than the monitoring point number in voltage dip allocation plan
N needs M-n newly-increased monitoring points thus, it is possible to determine on the basis of the voltage dip allocation plan.
Optimizing and scheme determining module 180 are used on the basis of the voltage dip allocation plan to newly-increased monitoring point
The newly-increased monitoring point of number carries out optimizing and obtains optimizing result, and determines unified allocation plan or increase according to the optimizing result
Continue optimizing until determining unified allocation plan in one newly-increased monitoring point.
In the present embodiment, it can satisfy according to the newly-increased monitoring point of voltage dip allocation plan and newly-increased monitoring point number
The whole network harmonic wave Observable constraint condition determines optimizing result.The optimizing and scheme determine mould in one of the embodiments,
Block 180 is specifically used for using discrete particle cluster algorithm, finds the monitoring point and newly-increased monitoring point for enabling voltage dip allocation plan
Enough meet the newly-increased monitoring point of the newly-increased monitoring point number of the whole network harmonic wave Observable constraint condition.If finding, optimizing result is
It seeks；If not finding, optimizing result is not seek.
Specifically, searching process uses discrete particle cluster algorithm, and searching meets the new of the whole network harmonic wave Observable constraint condition
The newly-increased monitoring point for increasing monitoring point number, if finding, optimizing result is to seek, and increases this newly monitoring point number newly-increased at this time
Monitoring point and the monitoring point of voltage dip allocation plan are determined as the monitoring point of unified allocation plan.If having traversed all monitorings
Point, the newly-increased monitoring point for still not finding newly-increased monitoring point number can satisfy the whole network harmonic wave Observable constraint condition, then seek
Excellent result is not seek, at this point, being further added by a newly-increased monitoring point continues optimizing, until optimizing result is to seek.It is sought when described
When excellent scheme is unsatisfactory for the whole network harmonic wave Observable constraint condition, increases a monitoring point and continue optimizing；Until the optimizing scheme
When meeting the whole network harmonic wave Observable constraint condition, the optimizing scheme can be determined for unified allocation plan.
The optimizing and scheme determining module 180 can also be used in one of the embodiments, be calculated using discrete particle cluster
Method will be described using the voltage dip allocation plan and the newly-increased monitoring point as the initial population of discrete particle cluster algorithm
Fitness value of the value of the objective function of the minimum monitoring point number of harmonic wave as discrete particle cluster algorithm, can by the whole network harmonic wave
Observational constraints condition determines unified allocation plan as the condition of convergence of discrete particle cluster algorithm.
Please continue to refer to Fig. 4, in one of the embodiments, further include:
Voltage model obtains module 120, for obtaining voltage dip monitoring point allocation models, the voltage dip monitoring point
Allocation models includes voltage dip constraint condition and voltage dip objective function.
In the present embodiment, voltage dip objective function is by INTEGRATED SIGHT Capability index gindex and Sugeno fuzzy model
It establishes, specifically:
Wherein, n is voltage dip monitoring point number；It is every fuzzy rule for the output of Sugeno fuzzy model
The weighted average of output quantity, specifically:
ωkIt is the weight number of general rule shared by kth rule in fuzzy model output, numerical value is given birth to automatically by fuzzy system
At also can according to need sets itself.yk=a0 k+a1 kgindex1+…+an kgindexn.K is number of fuzzy rules；N is voltage
The temporarily number of drop monitoring point.an kFor the INTEGRATED SIGHT Capability index gindex of nth busnCoefficient, mould is obscured by Sugeno
The fuzzy rule of type, which changes, to be generated.
The voltage dip objective function, formula (4) can reflect current-configuration for the compound function of two multiplications simultaneously
The monitoring point number of scheme and the fine or not degree of scheme.Even if as can be seen that the situation identical in monitoring point number from function
Under, different configuration of objective function is not also identical, and the smaller program of objective function is better, so as to obtain optimal side
Case.
In the present embodiment, it can be monitored by a voltage dip to guarantee under any fault type each failure at least
Point observes, establishes voltage dip constraint condition.Network short calculating is carried out according to network topology first, according to network short meter
It calculates result and establishes global viewable survey matrix M=(MRA3p,MRA1p,MRA2p,MRA2pg), wherein subscript 3p, 1p, 2p and 2pg difference
Indicate three-phase shortcircuit, single-phase short circuit, line to line fault and two-phase short circuit and ground fault.The voltage dip constraint condition specifically:
Wherein, xiIndicate whether i-th bus installs monitoring device, xi=1 expression is mounted with monitoring device；xi=0
Expression is fitted without monitoring device；N is system busbar sum；F is fault point sum；M (i, j) indicates that fault point j breaks down
When bus i whether can observe point failure, the expression of M (i, j)=1, which can be observed, to be measured, and M (i, j)=0 indicates to observe.
Above-mentioned harmonic wave and voltage dip monitoring point uniformly configure system, and voltage schemes determining module 130 is according to the power grid
Information parameter and voltage dip monitoring point allocation models determine that voltage dip allocation plan, condition judgment module 140 judge described
Whether voltage dip allocation plan meets the whole network harmonic wave Observable constraint condition, if so, unified approach determining module 150 is by institute
It states voltage dip allocation plan and is determined as unified allocation plan.Since to meet the whole network harmonic wave considerable for the voltage dip allocation plan
When surveying constraint condition, the voltage dip allocation plan had both met the voltage dip constraint item of voltage dip monitoring point allocation models
Part, and meet the whole network harmonic wave Observable constraint condition.Therefore the voltage dip allocation plan be can be identified as into unified allocation plan energy
Enough make the monitoring point for unifying allocation plan setting according to this, monitoring voltage can temporarily drop and two kinds of power quality shapes of harmonic wave simultaneously
Condition.
Only several embodiments of the present invention are expressed for above embodiments, and the description thereof is more specific and detailed, but can not
Therefore limitations on the scope of the patent of the present invention are interpreted as.It should be pointed out that for those of ordinary skill in the art,
Without departing from the inventive concept of the premise, multiple modification and improvement can also be made, these belong to protection model of the invention
It encloses.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (8)
1. configuration method is unified in a kind of harmonic wave and voltage dip monitoring point, which is characterized in that comprising steps of
Obtain electric network information parameter；
Voltage dip allocation plan is determined according to the electric network information parameter and voltage dip monitoring point allocation models；
Judge whether the voltage dip allocation plan meets the whole network harmonic wave Observable constraint condition；
If so, the voltage dip allocation plan is determined as unified allocation plan；
If judging, the voltage dip allocation plan is unsatisfactory for the whole network harmonic wave Observable constraint condition, the judgement voltage dip
After whether allocation plan meets the step of the whole network harmonic wave Observable constraint condition, further comprise the steps of:
Using the initial scheme that voltage dip monitoring point allocation plan is configured as Detecting Power Harmonicies point, and maintenance voltage temporarily drops monitoring point not
Become, is at least harmonic wave objective function with Detecting Power Harmonicies point number, determines the minimum monitoring point number of harmonic wave；
Newly-increased monitoring is determined according to the minimum monitoring point number of the harmonic wave and the monitoring point number of the voltage dip allocation plan
Point number；
Optimizing is carried out to the newly-increased monitoring point of newly-increased monitoring point number on the basis of the voltage dip allocation plan to be sought
It is excellent as a result, and determining unified allocation plan according to the optimizing result or increasing a monitoring point to continue optimizing unified until determining
Allocation plan.
2. configuration method is unified in harmonic wave according to claim 1 and voltage dip monitoring point, which is characterized in that described in institute
It states and optimizing is carried out to the newly-increased monitoring point of newly-increased monitoring point number on the basis of voltage dip allocation plan obtains optimizing result
Step specifically:
Using discrete particle cluster algorithm, searching makes the monitoring point of voltage dip allocation plan and newly-increased monitoring point can satisfy the whole network
The newly-increased monitoring point of the newly-increased monitoring point number of harmonic wave Observable constraint condition；If finding, optimizing result is to seek；If not looking for
It arrives, then optimizing result is not seek.
3. configuration method is unified in harmonic wave according to claim 1 and voltage dip monitoring point, which is characterized in that the determination
Before the step of voltage dip allocation plan, further includes:
Voltage dip monitoring point allocation models is obtained, voltage dip monitoring point allocation models includes voltage dip constraint condition
And voltage dip objective function；
Wherein, voltage dip objective function is established by INTEGRATED SIGHT Capability index gindex and Sugeno fuzzy model, specifically
Are as follows:
N is voltage dip monitoring point number；For the output of Sugeno fuzzy model,
ωkIt is the weight number of general rule shared by kth rule in fuzzy model output；yk=a0 k+a1 kgindex1+…+
an kgindexn；K is number of fuzzy rules；N is the number of voltage dip monitoring point；an kRefer to for the INTEGRATED SIGHT ability of nth bus
Number gindexnCoefficient, by Sugeno fuzzy model fuzzy rule change generate.
4. configuration method is unified in harmonic wave according to claim 3 and voltage dip monitoring point, which is characterized in that the synthesis
Observing capacity index gindex specifically:
Type indicates fault type, and type=1,2,3,4, which respectively indicate three-phase shortcircuit, single-phase short circuit, line to line fault and two, connects
Ground short circuit failure, indexi,typeIndicate that the observing capacity index under i-th bus fault type, p (type) indicate the failure
The occurrence frequency of type；
Wherein, observing capacity index index is determined by fuzzy voltage dip Observable domain MMRA and Mamdani fuzzy model.
5. a kind of harmonic wave and voltage dip monitoring point uniformly configure system characterized by comprising
Parameter acquisition module, for obtaining electric network information parameter；
Voltage schemes determining module, for determining voltage according to the electric network information parameter and voltage dip monitoring point allocation models
Temporarily drop allocation plan；
Condition judgment module, for judging whether the voltage dip allocation plan meets the whole network harmonic wave Observable constraint condition；
Unified approach determining module, if to judge whether the voltage dip allocation plan meets the whole network humorous for the condition judgment module
Wave Observable constraint condition, for the voltage dip allocation plan to be determined as unified allocation plan；
If the condition judgment module judges that the voltage dip allocation plan is unsatisfactory for the whole network harmonic wave Observable constraint condition, institute
It states harmonic wave and voltage dip monitoring point uniformly configures system further include:
Monitoring point number determining module, the initial side for being configured using voltage dip monitoring point allocation plan as Detecting Power Harmonicies point
Case, and temporarily to drop monitoring point constant for maintenance voltage, is at least harmonic wave objective function with Detecting Power Harmonicies point number, determines that harmonic wave is at least supervised
Measuring point number；
A newly-increased point number determining module, for according to the minimum monitoring point number of the harmonic wave and the voltage dip allocation plan
Monitoring point number determines newly-increased monitoring point number；
Optimizing and scheme determining module, on the basis of the voltage dip allocation plan to the new of newly-increased monitoring point number
Increase monitoring point progress optimizing and obtain optimizing result, and unified allocation plan is determined according to the optimizing result or increases a monitoring
Point continues optimizing until determining unified allocation plan.
6. harmonic wave according to claim 5 and voltage dip monitoring point uniformly configure system, which is characterized in that the optimizing
And scheme determining module, it is also used to, using discrete particle cluster algorithm, finds the monitoring point for making voltage dip allocation plan and increase newly
Monitoring point can satisfy the newly-increased monitoring point of the newly-increased monitoring point number of the whole network harmonic wave Observable constraint condition；If finding, seek
Excellent result is to seek；If not finding, optimizing result is not seek.
7. harmonic wave according to claim 5 and voltage dip monitoring point uniformly configure system, which is characterized in that further include:
Voltage model obtains module, and for obtaining voltage dip monitoring point allocation models, the voltage dip monitoring point configures mould
Type includes voltage dip constraint condition and voltage dip objective function；
Wherein, voltage dip objective function is established by INTEGRATED SIGHT Capability index gindex and Sugeno fuzzy model, specifically
Are as follows:
N is voltage dip monitoring point number；For the output of Sugeno fuzzy model,
ωkIt is the weight number of general rule shared by kth rule in fuzzy model output；yk=a0 k+a1 kgindex1+…+
an kgindexn；K is number of fuzzy rules；N is the number of voltage dip monitoring point；an kRefer to for the INTEGRATED SIGHT ability of nth bus
Number gindexnCoefficient, by Sugeno fuzzy model fuzzy rule change generate.
8. harmonic wave according to claim 7 and voltage dip monitoring point uniformly configure system, which is characterized in that the synthesis
Observing capacity index gindex specifically:
Type indicates fault type, and type=1,2,3,4, which respectively indicate three-phase shortcircuit, single-phase short circuit, line to line fault and two, connects
Ground short circuit failure, indexi,typeIndicate that the observing capacity index under i-th bus fault type, p (type) indicate the failure
The occurrence frequency of type；
Wherein, observing capacity index index is determined by fuzzy voltage dip Observable domain MMRA and Mamdani fuzzy model.
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| CN110082639B (en) * | 2019-05-15 | 2020-06-26 | 广东电网有限责任公司 | Voltage sag monitoring point optimal configuration method based on minimum amplitude search |
| CN110456219A (en) * | 2019-08-12 | 2019-11-15 | 国网江西省电力有限公司电力科学研究院 | A kind of appraisal procedure of distribution line short voltage dip degree |
| CN111461924B (en) * | 2020-04-13 | 2022-12-16 | 国网山西省电力公司电力科学研究院 | Multi-objective optimization configuration method for voltage sag monitoring points |
| CN113792908A (en) * | 2021-08-06 | 2021-12-14 | 国网天津市电力公司 | System and method for optimizing and configuring power quality monitoring terminal of important user of low-voltage distribution network |
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Effective date of registration: 20200922 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. |