CN106786633A - The collocation method and reactive voltage adjusting means of reactive voltage adjusting means - Google Patents
The collocation method and reactive voltage adjusting means of reactive voltage adjusting means Download PDFInfo
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- CN106786633A CN106786633A CN201710183243.7A CN201710183243A CN106786633A CN 106786633 A CN106786633 A CN 106786633A CN 201710183243 A CN201710183243 A CN 201710183243A CN 106786633 A CN106786633 A CN 106786633A
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- voltage
- adjusting means
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- voltage adjusting
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Abstract
The present invention relates to the collocation method and reactive voltage adjusting means of a kind of reactive voltage adjusting means.The collocation method of above-mentioned reactive voltage adjusting means, comprises the following steps：Obtain maximum load current of the low-voltage circuit where reactive voltage adjusting means mount point in the first setting time section；Obtain the phase voltage of erecting bed area low-voltage circuit where the reactive voltage adjusting means；The configuration capacity of reactive voltage adjusting means is calculated according to the maximum load current, phase voltage and capacity configuration formula；Wherein, the capacity configuration formula is：S=α AQKUNILmax；In formula, α is the number of phases of erecting bed area low-voltage circuit, AQTo promote to increase coefficient, K is nargin coefficient, UNIt is phase voltage, ILmaxThe maximum load current of low-voltage circuit where mount point；The capacity of voltage regulator module in the reactive voltage adjusting means is configured according to the configuration capacity；It makes the configuration of above-mentioned reactive voltage adjusting means more accurate, effectively increases the allocative effect of reactive voltage adjusting means.
Description
Technical field
The present invention relates to technical field of electric power, the collocation method of more particularly to a kind of reactive voltage adjusting means and idle
Voltage regulating device.
Background technology
As household electrical appliance are in the popularization of every family, the need for electricity more and more higher of all types of user, due to rural area etc.
The power load development of non-Urban Areas is underestimated, and non-Urban Areas power distribution network generally existing capacity of distribution transform it is not enough and
The problems such as wire diameter is meticulous, voltage is seriously relatively low when causing peak times of power consumption.Additionally, non-Urban Areas living standard is gradually carried
Height, build a house everywhere increase and lack planning property, it is understood that there may be former stand from being changed into the situation away from load center in load center,
Aggravation power distribution network terminal temperature difference low voltage problem.
In the case of power distribution network terminal voltage is seriously relatively low, most of electrical equipment can not be normally-open, now distribution transformer
The maximum load when maximum load for detecting is part electric operation, that is to say, that be because low-voltage causes user many
Equipment " pseudo- data " obtained from peak period cannot open.After reactive voltage adjusting means puts into operation, user's voltage
Recover normal, the high-power electric appliance of user can be with normally-open, and the peak oppressive for a long time because of low-voltage problem is born before causing
Lotus is released, and maximum load now will exceed well over long-term measurement in the past and the data for counting.Reactive voltage regulation dress
The correct configuration for putting capacity has decisive role to reactive voltage adjustment work, however, traditional reactive voltage adjusting means
Configuration typically with the maximum load surveyed to determine the configuration capacity of reactive voltage adjustment equipment, allocative effect is poor.
The content of the invention
Based on this, it is necessary to for traditional scheme to the technical problem of the allocative effect difference of reactive voltage adjusting means, carry
For the collocation method and reactive voltage adjusting means of a kind of reactive voltage adjusting means.
A kind of collocation method of reactive voltage adjusting means, comprises the following steps：
Obtain peak load electricity of the low-voltage circuit where reactive voltage adjusting means mount point in the first setting time section
Stream；
Obtain the phase voltage of erecting bed area low-voltage circuit where the reactive voltage adjusting means；
The configuration of reactive voltage adjusting means is calculated according to the maximum load current, phase voltage and capacity configuration formula
Capacity；Wherein, the capacity configuration formula is：S=α AQKUNILmax；In formula, α is the number of phases, AQTo promote to increase coefficient, K is nargin system
Number, UNIt is phase voltage, ILmaxThe maximum load current of low-voltage circuit where device mount point；
The capacity of voltage regulator module in the reactive voltage adjusting means is configured according to the configuration capacity.
The collocation method of above-mentioned reactive voltage adjusting means, can obtain low pressure where reactive voltage adjusting means mount point
Maximum load current of the circuit in the first setting time section, and erecting bed area low pressure where above-mentioned reactive voltage adjusting means
The phase voltage of circuit, the configuration capacity of reactive voltage adjusting means is calculated with this, configures described idle according to above-mentioned configuration capacity
Voltage regulator module in voltage regulating device, makes the configuration of above-mentioned reactive voltage adjusting means more accurate, effectively increases nothing
The allocative effect of work(voltage regulating device.
A kind of reactive voltage adjusting means, including voltage regulator module and reactive compensation module；The two of the voltage regulator module
Secondary side includes bucking coil, and the reactive compensation module includes multiple unit capacitor；One end of the voltage regulator module primary side connects
Signal input part is connect, the other end of voltage regulator module primary side connects zero line side, the bucking coil of voltage regulator module secondary side
First end connects signal input part, and the second end of bucking coil connects one end of reactive compensation module, the 3rd end of bucking coil
Connect the other end of reactive compensation module, one end connection signal output part of the reactive compensation module, the reactive-load compensation mould
The other end connection zero line side of block；
Before reactive voltage regulation, low-voltage circuit is when first sets where acquisition reactive voltage adjusting means mount point
Between maximum load current in section；
Obtain the phase voltage of erecting bed area low-voltage circuit where the reactive voltage adjusting means；
The configuration of reactive voltage adjusting means is calculated according to the maximum load current, phase voltage and capacity configuration formula
Capacity；Wherein, the capacity configuration formula is：S=α AQKUNILmax；In formula, α is the number of phases of erecting bed area low-voltage circuit, AQFor
Promote to increase coefficient, K is nargin coefficient, UNIt is phase voltage, ILmaxThe maximum load current of low-voltage circuit where device mount point；
The capacity of the voltage regulator module is configured according to the configuration capacity.
Above-mentioned reactive voltage adjusting means, has carried out accurately connecting respectively to voltage regulator module therein and reactive compensation module
Connect, identified voltage regulator module capacity has accuracy higher, be conducive to improving the idle electricity of reactive voltage adjusting means
Pressure regulating effect.
Brief description of the drawings
Fig. 1 is the collocation method flow chart of the reactive voltage adjusting means of one embodiment；
Fig. 2 is the reactive voltage adjusting means structural representation of one embodiment；
Fig. 3 is the conspectus of the distribute-electricity transformer district of one embodiment；
Fig. 4 is the reactive voltage adjusting means structural representation of one embodiment.
Specific embodiment
Collocation method below in conjunction with the accompanying drawings to reactive voltage adjusting means of the invention and reactive voltage adjusting means
Specific embodiment is described in detail.
With reference to Fig. 1, Fig. 1 show the collocation method flow chart of the reactive voltage adjusting means of one embodiment, including such as
Lower step：
S51, obtains maximum of the low-voltage circuit where reactive voltage adjusting means mount point in the first setting time section and bears
Charged current；
The structural representation of above-mentioned reactive voltage adjusting means can be with as shown in Fig. 2 including the first A.C. contactor 27,
Two A.C. contactors 29, the 3rd A.C. contactor 28, voltage regulator module 10, reactive compensation module 21, compensating switch 22, electric capacity
31st, controller 26 and communication module 36.The secondary side of above-mentioned voltage regulator module 10 includes bucking coil 11, reactive compensation module
21 include multiple unit capacitor, and the second A.C. contactor 29 is connected between input and output end, voltage regulator module 10 and idle
The output end of compensating module 21 is in parallel, and input passes sequentially through compensating switch 22 and electric capacity 31 is grounded, above-mentioned first ac contactor
Device 27 is connected between input and bucking coil 11, the 3rd A.C. contactor 28 be connected to bucking coil 11 and output end it
Between, controller noted above 26 connects voltage regulator module 10 and reactive compensation module 21 respectively, to above-mentioned voltage regulator module 10 and idle
Compensating module 21 is configured accordingly, and controller noted above 26 also (is such as serviced by communication module 36 with the control device of outside
Stand or a distant place control main website etc.) it is communicatively coupled.Above-mentioned voltage regulator module 10 is to connect with the low-voltage circuit in erecting bed area
Relation, and reactive compensation module 21 is parallel relationship with the low-voltage circuit in erecting bed area.The erecting bed of reactive voltage adjusting means
Area can determine that in above-mentioned erecting bed area the specific position of installation reactive voltage adjusting means according to distribution network line with electrical feature
It is set to the mount point of reactive voltage adjusting means.
Reactive voltage adjusting means according to the physical circuit feature of corresponding distribution network line end, with corresponding erecting bed
Area, according to above-mentioned erecting bed area and can answer the corresponding feature of distribution network line end to enter above-mentioned reactive voltage adjusting means
Row configuration, to ensure the allocative effect to reactive voltage adjusting means.Above-mentioned first setting time section can be according to distribution netting twine
The power utilization environment feature of road end is configured, and could be arranged to be currently configured the time period such as nearest 1 year of time.
S52, obtains the phase voltage of erecting bed area low-voltage circuit where the reactive voltage adjusting means；
Usually, the line voltage of above-mentioned low-voltage circuit can be 0.4kV (kilovolt), and corresponding phase voltage can be
0.22kV.The collocation method of above-mentioned reactive voltage adjusting means is applied to the low pressure level of 0.4kV.
In one embodiment, distribution network line end mesolow line where the above-mentioned acquisition reactive voltage adjusting means
The process of the phase voltage on road can include：
Measure the line voltage of erecting bed area low-voltage circuit where the reactive voltage adjusting means；
The phase voltage of low-voltage circuit is calculated according to the line voltage and phase voltage calculation formula；Wherein, the phase voltage meter
Calculating formula is：UIRepresent line voltage, UNRepresent phase voltage.
The present embodiment determines the phase voltage of low-voltage circuit according to the line voltage that measurement is obtained, and has identified phase voltage
Accuracy higher.
S53, reactive voltage adjusting means is calculated according to the maximum load current, phase voltage and capacity configuration formula
Configuration capacity；Wherein, the capacity configuration formula is：S=α AQKUNILmax；In formula, α is the number of phases of erecting bed area low-voltage circuit,
AQTo promote to increase coefficient, K is nargin coefficient, UNIt is phase voltage, ILmaxThe maximum load current of low-voltage circuit where mount point；
Above-mentioned number of phases α can determine according to the phase attributes feature of circuit where reactive voltage adjusting means, promote to increase coefficient
AQInterval can be [1.8,2.0], above-mentioned symbol [] represents closed interval, and its implication is to be installed additional in 0.4kV low-voltage circuits
After reactive voltage adjusting means, user side voltage is improved, now because the workload demand that low-voltage problem suppresses can be manifested
Come, cause workload demand to increase, therefore recruit depressor module capacity when to consider load promote increase phenomenon.If the first setting time section
To be currently configured nearest 1 year of the time, then ILmaxIt is the reactive voltage adjusting means mount point peak load of nearest year electricity
Stream.
In one embodiment, the interval that above-mentioned rush increases coefficient can be [1.8,2.0]；Above-mentioned nargin coefficient takes
It is [1.3,1.5] that value is interval；
It is above-mentioned that reactive voltage adjusting means is calculated according to the maximum load current, phase voltage and capacity configuration formula
Before the process of configuration capacity, can also include：
If the reactive voltage adjusting means is arranged in three-phase circuit, α is set to 3；If the reactive voltage is adjusted
Regulating device is arranged in single-phase circuit, then α is set into 1.
If the reactive voltage adjusting means is arranged in three-phase circuit, phase coefficient is set to 3；Now, capacity
Allocation formula is：SQS=3AQKUNILmax；If the reactive voltage adjusting means is arranged in single-phase circuit, by phase coefficient
It is set to 1；Now, capacity configuration formula is：SQD=AQKUNILmax。
S54, the capacity of voltage regulator module in the reactive voltage adjusting means is configured according to the configuration capacity.
Configuration capacity configuration includes voltage regulator module and reactive compensation module parallel with one another, and above-mentioned steps can be accurately real
Now to the configuration of capacity needed for voltage regulator module.
The collocation method of the reactive voltage adjusting means that the present invention is provided, can obtain reactive voltage adjusting means mount point
Maximum load current of the place low-voltage circuit in the first setting time section, and installed where above-mentioned reactive voltage adjusting means
The phase voltage of platform area low-voltage circuit, the configuration capacity of reactive voltage adjusting means is calculated with this, is configured according to above-mentioned configuration capacity
Voltage regulator module in the reactive voltage adjusting means, makes the configuration of above-mentioned reactive voltage adjusting means more accurate, effectively
Improve the allocative effect of reactive voltage adjusting means.
In one embodiment, the collocation method of above-mentioned reactive voltage adjusting means, can also include：
Setting ratio according to the configuration capacity determines that the reactive compensation module switching to the reactive voltage is adjusted
The capacity of device；Wherein, the reactive compensation module is connected in parallel on the output end of the voltage regulator module；The reactive compensation module
Including multiple unit capacitor.
Above-mentioned reactive compensation module can include multiple unit capacitor, and reactive compensation module can be by controlling to access idle electricity
Press the capacitor bank numerical control switching of adjusting means to the volume controlled of the reactive voltage adjusting means.
Used as one embodiment, the scope of above-mentioned setting ratio is [25%, 35%].
Specifically, during the actual disposition of reactive voltage adjusting means, the group forming criterion of capacitor can be to solve
Certainly based on low-voltage circuit low voltage problem, solve the problems, such as that three-phase imbalance is pair, therefore the capacitor of reactive compensation module can
To be divided to two groups, one group of realization is compensated altogether, and another set realizes that the ratio between a point benefit compensation, both capacity could be arranged to 2:1.
The present embodiment determines reactive compensation module switching to described idle according to [25%, 35%] of voltage regulator module capacity
The capacity of voltage regulating device, the effectively perfect configuration process of reactive voltage adjusting means.
In one embodiment, the collocation method of above-mentioned reactive voltage adjusting means, can also include：
Output signal to the reactive voltage adjusting means carries out n times sampling, obtains the corresponding N number of sampling of output signal
Voltage；
The voltage wave in reactive voltage adjusting means erecting bed area is calculated according to the sampled voltage and stability bandwidth computing formula
Dynamic rate；Wherein, the stability bandwidth computing formula is：
In formula, VB% is voltage fluctuation rate, ViBe ith sample voltage, i.e. the electricity of ith sample moment final mount point
Pressure, VNIt is low-voltage circuit rated voltage, i is the integer more than or equal to 1 and less than or equal to N；
During gear regulation, the gear number and span of voltage regulator module are determined according to the voltage fluctuation rate.
Above-mentioned N can be determined according to the specific features of corresponding distribution network line end, such as be defined as 1000 equivalent.
It is above-mentioned that the gear number of voltage regulator module and the mistake of span are determined according to the voltage fluctuation rate as one embodiment
Journey can include：
Detect the erecting bed area in the second setting time section with the presence or absence of distributed power source；
If the erecting bed area has distributed power source in the second setting time section, formula is adjusted according to the first gear
Determine the gear number and span during the regulation of voltage regulator module gear；
If the erecting bed area does not exist distributed power source in the second setting time section, adjust public according to the second gear
Formula determines the gear number and span during the regulation of voltage regulator module gear.
Used as one embodiment, above-mentioned first gear regulation formula includes：
VBDuring % ＞ 1, D=± 2m, J=2.5%；
0≤VBDuring %≤1, D=± m, J=5.0%；
The second gear regulation formula includes：
VBDuring % ＞ 1, D=-2m, J=2.5%；
0≤VBDuring %≤1, D=-m, J=5.0%；
In formula, D represents gear number, and m represents gear threshold value, and J represents span.
Above-mentioned second setting time section can be defined as a following time period more long, such as this time of the five-year
Section.If the erecting bed area the second setting time section in there is distributed power source, can by the gear of voltage regulator module to
Raise (take+number) or to lowering (take-number).Under normal circumstances, if the output voltage of reactive voltage adjusting means is less than reference
Magnitude of voltage, then by the gear of voltage regulator module to downward, if the output voltage of reactive voltage adjusting means is more than reference voltage level,
Then by the gear of voltage regulator module to rise, above-mentioned reference voltage level can determine according to the concrete model of voltage regulator module.If
The erecting bed area does not exist distributed power source in the second setting time section, then only need to be downward by the gear of voltage regulator module
Adjust, be effectively simplified the gear regulation process of voltage regulator module.
In actual application process, above-mentioned reactive voltage adjusting means may be mounted in 0.4kV low-voltage circuits.It is idle
Mount point of the voltage regulating device in 0.4kV low-voltage circuits chooses process can be included：Respectively match somebody with somebody in acquisition 0.4kV low-voltage circuits
The transformer capacity in Bian Tai areas, low-voltage customer complain situation and low voltage terminal voltage condition；To meet low-voltage judgment principle
Platform area as adjuster erecting bed area；According to institute's channel selection area transformer capacity, the low-voltage origin cause of formation, pre-selection mount point and circuit
The voltage and three-phrase burden balance situation of terminal temperature difference determine final mount point.
It is determined that after mount point, maximum load current of the final mount point in nearly 1 year can be obtained, using adjuster
Capacity method for optimizing obtains its configuration capacity；Its pressure regulator gear and electric capacity for being related to is determined according to adjuster stepping group technology
Device group number.
The configuration of above-mentioned reactive voltage adjusting means is referred to as low-voltage reactive power voltage integrated adjuster (low-
Voltage reactive power voltage regulator, LRVR), refer to a kind of low-voltage reactive power voltage adjuster,
Mainly it is made up of voltage regulator module, reactive compensation module, coordinating control module (controller) and communication module, structural representation
May be referred to shown in Fig. 2, be mainly used to solve the problems, such as low-voltage circuit low-voltage and three-phase load unbalance.
The operation principle of above-mentioned LRVR can include：Voltage regulator module coil is connected in the line, electric when input is detected
When pressing through low, voltage regulator module automatic is boosted step by step according to the numerical value for actually entering voltage, output voltage is met load
Normal work, and reactive-load compensation capacitor puts into the reactive-load compensation of respective numbers, to the inductive reactive power on compensated line, drop
Low line loss and pressure drop caused by reactive current.When input voltage is detected higher than setting value (upper voltage limit), pressure regulation
Device module makes output voltage control in target zone then according to the numerical value step pressure reducing of voltage is actually entered.
In the configuration process of reactive voltage adjusting means, low-voltage judgment principle can be used, above-mentioned low-voltage judges
Principle refers to that distribute-electricity transformer district low-voltage circuit three-phase voltage occurred less than the qualified lower limit V of voltage in 1 yearSlimNumber of days add up
More than Tlim, or single-phase voltage is less than the qualified lower limit V of voltageDlimNumber of days it is accumulative more than Tlim.Preferably, TlimValue
Interval is [30,40], and unit is day, and interval " [] " containing bracket all thinks to obtain two end points in the present invention
Value, such as TlimSpan be, more than or equal to 30 days, and to be less than or equal to 40 days.For 0.4kV low-voltage circuits, VSlimTake
354.3V, VDlimTake 198V.
Can be according to the voltage of institute's channel selection area transformer capacity, the low-voltage origin cause of formation, pre-selection mount point and line end user
And three-phrase burden balance situation determines final mount point, specific determination process includes：Understand the basic condition in this area, with
Determine whether transformer capacity meets actual load demand, if seriously overload can first change transformer for distribution transforming；If there is three-phase
Voltage is seriously uneven, can first carry out phase modulation.Final mount point should be in low-voltage user front end and near the electricity of user side
On bar.Terminal voltage caused by radius of electricity supply is long is relatively low, in peak of power consumption (such as daily 11:00-12:00,17:00-
20:00) when household electrical appliance cannot be used normally, the mount point place of user's voltage between 170V-200V in peak of power consumption
For optimal.The distribution of the configuration and low-voltage user at scene is understood, to determine to use single-phase equipment or three-phase equipment.Peace
Decorate the region that can be selected easily transport and install equipment.
By taking the 10kV circuits of certain rural area as an example, transformer capacity, the low pressure of each distribute-electricity transformer district in circuit can be obtained
Customer complaint situation and low voltage terminal voltage condition：Circuit trunk line length 13.8km, total length is 18.2km, wherein backbone
It is LGJ-95 to use wire type, and branch line includes LGJ-70 and LGJ-50 using wire type；Attaching has distribution to become to circuit altogether
Depressor 36, total capacity is 4860kVA；Obtain there are problems that the platform area of low-voltage in circuit according to low-voltage judgment principle；Choosing
Take as a example by certain distribution transforming that there are problems that low-voltage, the line parameter circuit value of the distribute-electricity transformer district is as shown in figure 3, according to institute's channel selection area transformation
The voltage and three-phrase burden balance situation of device capacity, the low-voltage origin cause of formation, pre-selection mount point and line end user determine final
Mount point can be for C points in Fig. 3 at, select three-phase low-voltage Reactive Voltage Comprehensive Adjustment device, its pressure regulator being related to is unidirectional；Obtain
Take maximum load current I of the final mount point in nearly 1 yearLmax, it is 1.5 to set nargin coefficient, promotees to increase coefficient AQIt is 2.0, utilizes
The collocation method of reactive voltage adjusting means obtains its configuration capacity：ILmax=60A, SQS=118.47kVA, then pressure regulator is optional
The capacity model of 120kVA (kilovolt-ampere) is taken, capacitor can choose 30kvar (kilovar)；It is true according to adjuster stepping group technology
The fixed pressure regulator gear and capacitor bank number that it is related to, wherein, it can be seen from the adjuster mount point historical data of nearest a year
Its voltage fluctuation rate VB% is 1.24, therefore corresponding pressure regulator gear may be configured as：Gear number D=± 8, span J=
1.25%；Capacitor is divided to two groups, and one group of realization is compensated altogether, and capacity is 20kvar, and another set realizes a point benefit compensation, and capacity is
10kvar。
The collocation method of the reactive voltage adjusting means that the present invention is provided is history data with reference to low-voltage circuit, low
The voltage origin cause of formation and the actual conditions at scene, and consider promote increase phenomenon propose low-voltage reactive power voltage regulator capacity it is preferably square
Method, relatively conventional collocation method has more reasonability；According to the situation of voltage fluctuation rate, pressure regulator stepping method, regulation effect are proposed
Fruit more refines, and is suitable for the larger platform area demand of load fluctuation.
With reference to shown in Fig. 4, Fig. 4 is the reactive voltage adjusting means structural representation of one embodiment, including pressure regulator mould
Block 60 and reactive compensation module 71；The secondary side of the voltage regulator module 60 includes bucking coil 61, the reactive compensation module
71 include multiple unit capacitor；One end connection signal input part of the primary side of the voltage regulator module 60, voltage regulator module 60 is once
The other end connection zero line side of side, the first end connection signal input part of the bucking coil 61 of the secondary side of voltage regulator module 60, mends
The second end for repaying coil 61 connects one end of reactive compensation module 71, the three-terminal link reactive compensation module 71 of bucking coil 61
The other end, one end connection signal output part of the reactive compensation module 61, the other end of the reactive compensation module 71 connects
Connecting to neutral line end；Specifically, voltage regulator module 60 and the low-voltage circuit in reactive voltage adjusting means erecting bed area are series relationship, nothing
Work(compensating module 71 is parallel relationship with the low-voltage circuit in erecting bed area, and reactive compensation module 71 can be connected in parallel on voltage regulator module
60 output end；
Before reactive voltage regulation, (such as low pressure trunk of low-voltage circuit where reactive voltage adjusting means mount point is obtained
Circuit) the first setting time section in maximum load current；
Obtain the phase voltage of erecting bed area low-voltage circuit where the reactive voltage adjusting means；
The configuration of reactive voltage adjusting means is calculated according to the maximum load current, phase voltage and capacity configuration formula
Capacity；Wherein, the capacity configuration formula is：S=α AQKUNILmax；In formula, α is the number of phases of erecting bed area low-voltage circuit, AQFor
Promote to increase coefficient, K is nargin coefficient, UNIt is phase voltage, ILmaxThe maximum load current of low-voltage circuit where mount point；
The capacity of the voltage regulator module 60 is configured according to the configuration capacity；After the completion of voltage regulator module capacity configuration
Reactive voltage regulation is carried out to distribution network line end.
The reactive voltage adjusting means that the present embodiment is provided, to 71 points of voltage regulator module therein 60 and reactive compensation module
Accurate connection has not been carried out, identified voltage regulator module capacity has accuracy higher, be conducive to improving reactive voltage tune
The reactive voltage regulating effect of regulating device.
In one embodiment, after the capacity for configuring the voltage regulator module, can be according to the configuration capacity
Setting ratio determines the capacity of the reactive compensation module switching to the reactive voltage adjusting means.
Specifically, the scope of above-mentioned setting ratio is [25%, 35%].In the actual disposition mistake of reactive voltage adjusting means
Cheng Zhong, the group forming criterion of capacitor can be to solve the problems, such as based on low-voltage circuit low voltage, to solve the problems, such as three-phase imbalance
It is pair, therefore the capacitor of reactive compensation module can be divided to two groups, one group of realization is compensated altogether, and another set realizes a point benefit
Repay, the ratio between both capacity could be arranged to 2:1.
In one embodiment, distribution network line end mesolow line where the reactive voltage adjusting means can be measured
The line voltage on road；
The phase voltage of low-voltage circuit is calculated according to the line voltage and phase voltage calculation formula；Wherein, the phase voltage meter
Calculating formula is：UIRepresent line voltage, UNRepresent phase voltage.
Usually, the phase voltage of above-mentioned low-voltage circuit can be 0.4kV (kilovolt).Above-mentioned reactive voltage adjusting means is applicable
In the low pressure level of 0.4kV, it can choose erecting bed area in 0.4kV low pressure levels, it is determined that corresponding mount point, is configured
Adjusted with reactive voltage.
The present embodiment determines the phase voltage of low-voltage circuit according to the line voltage that measurement is obtained, and has identified phase voltage
Accuracy higher.
In one embodiment, the interval that above-mentioned rush increases coefficient can be [1.8,2.0]；Above-mentioned nargin coefficient takes
It is [1.3,1.5] that value is interval；
If the reactive voltage adjusting means is arranged in three-phase circuit, α can be set to 3；Can be with the idle electricity
Pressure adjusting means is arranged in single-phase circuit, then α is set into 1.
In one embodiment, after the capacity for configuring the voltage regulator module, can also include：
Output signal to the reactive voltage adjusting means carries out n times sampling, obtains the corresponding N number of sampling of output signal
Voltage；
The voltage wave in reactive voltage adjusting means erecting bed area is calculated according to the sampled voltage and stability bandwidth computing formula
Dynamic rate；Wherein, the stability bandwidth computing formula is：
In formula, VB% is voltage fluctuation rate, ViBe ith sample voltage, i.e. the electricity of ith sample moment final mount point
Pressure, VNIt is low-voltage circuit rated voltage, i is the integer more than or equal to 1 and less than or equal to N；
During gear regulation, the gear number and span of voltage regulator module are determined according to the voltage fluctuation rate.
Above-mentioned N can be determined according to the specific features of corresponding distribution network line end, such as be defined as 1000 equivalent.
It is above-mentioned that the gear number of voltage regulator module and the mistake of span are determined according to the voltage fluctuation rate as one embodiment
Journey can include：
Detect the erecting bed area in the second setting time section with the presence or absence of distributed power source；
If the erecting bed area has distributed power source in the second setting time section, formula is adjusted according to the first gear
Determine the gear number and span during the regulation of voltage regulator module gear；
If the erecting bed area does not exist distributed power source in the second setting time section, adjust public according to the second gear
Formula determines the gear number and span during the regulation of voltage regulator module gear.
Used as one embodiment, above-mentioned first gear regulation formula includes：
VBDuring % ＞ 1, D=± 2m, J=2.5%；
0≤VBDuring %≤1, D=± m, J=5.0%；
The second gear regulation formula includes：
VBDuring % ＞ 1, D=-2m, J=2.5%；
0≤VBDuring %≤1, D=-m, J=5.0%；
In formula, D represents gear number, and m represents gear threshold value, and J represents span.
Above-mentioned second setting time section can be defined as a following time period more long, such as this time of the five-year
Section.If the erecting bed area the second setting time section in there is distributed power source, can by the gear of voltage regulator module to
Raise (take+number) or to lowering (take-number).Under normal circumstances, if the output voltage of reactive voltage adjusting means is less than reference
Magnitude of voltage, then by the gear of voltage regulator module to downward, if the output voltage of reactive voltage adjusting means is more than reference voltage level,
Then by the gear of voltage regulator module to rise, above-mentioned reference voltage level can determine according to the concrete model of voltage regulator module.If
The erecting bed area does not exist distributed power source in the second setting time section, then only need to be downward by the gear of voltage regulator module
Adjust, be effectively simplified the gear regulation process of voltage regulator module.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of collocation method of reactive voltage adjusting means, it is characterised in that comprise the following steps：
Obtain maximum load current of the low-voltage circuit where reactive voltage adjusting means mount point in the first setting time section；
Obtain the phase voltage of erecting bed area low-voltage circuit where the reactive voltage adjusting means；
Held according to the configuration that the maximum load current, phase voltage and capacity configuration formula calculate reactive voltage adjusting means
Amount；Wherein, the capacity configuration formula is：S=α AQKUNILmax；In formula, α is the number of phases of erecting bed area low-voltage circuit, AQTo promote
Increase coefficient, K is nargin coefficient, UNIt is phase voltage, ILmaxThe maximum load current of low-voltage circuit where mount point；
The capacity of voltage regulator module in the reactive voltage adjusting means is configured according to the configuration capacity.
2. the collocation method of reactive voltage adjusting means according to claim 1, it is characterised in that also include：
Setting ratio according to the configuration capacity determines the reactive compensation module switching to the reactive voltage adjusting means
Capacity；Wherein, the reactive compensation module is connected in parallel on the output end of the voltage regulator module；The reactive compensation module includes
Multiple unit capacitor.
3. the collocation method of reactive voltage adjusting means according to claim 2, it is characterised in that the setting ratio
Scope is [25%, 35%].
4. the collocation method of reactive voltage adjusting means according to claim 1, it is characterised in that also include：
Output signal to the reactive voltage adjusting means carries out n times sampling, obtains the corresponding N number of sampling electricity of output signal
Pressure；
The voltage fluctuation rate in reactive voltage adjusting means erecting bed area is calculated according to the sampled voltage and stability bandwidth computing formula；
Wherein, the stability bandwidth computing formula is：
In formula, VB% is voltage fluctuation rate, ViIt is ith sample voltage, VNIt is low-voltage circuit rated voltage, i is more than or equal to 1
And the integer less than or equal to N；
During gear regulation, the gear number and span of voltage regulator module are determined according to the voltage fluctuation rate.
5. the collocation method of reactive voltage adjusting means according to claim 4, it is characterised in that described according to the electricity
Pressure stability bandwidth determines that the gear number of voltage regulator module and the process of span include：
Detect the erecting bed area in the second setting time section with the presence or absence of distributed power source；
If the erecting bed area has distributed power source in the second setting time section, formula is adjusted according to the first gear and is determined
Gear number and span during the regulation of voltage regulator module gear；
If the erecting bed area does not exist distributed power source in the second setting time section, formula is adjusted according to the second gear true
Determine the gear number and span during the regulation of voltage regulator module gear.
6. the collocation method of reactive voltage adjusting means according to claim 5, it is characterised in that first gear is adjusted
Section formula includes：
VBDuring % ＞ 1, D=± 2m, J=2.5%；
0≤VBDuring %≤1, D=± m, J=5.0%；
The second gear regulation formula includes：
VBDuring % ＞ 1, D=-2m, J=2.5%；
0≤VBDuring %≤1, D=-m, J=5.0%；
In formula, D represents gear number, and m represents gear threshold value, and J represents span.
7. the collocation method of the reactive voltage adjusting means according to any one of claim 1 to 6, it is characterised in that described
The interval for promoting to increase coefficient is [1.8,2.0]；The interval of the nargin coefficient is [1.3,1.5]；
It is described that reactive voltage adjusting means is calculated according to the maximum load current, phase voltage and default capacity configuration formula
Configuration capacity process before, also include：
If the reactive voltage adjusting means is arranged in three-phase circuit, α is set to 3；If the reactive voltage adjusting means
In single-phase circuit, then α is set to 1.
8. the collocation method of the reactive voltage adjusting means according to any one of claim 1 to 6, it is characterised in that described
The process for obtaining the phase voltage of distribution network line end mid ＆ low-voltage line where the reactive voltage adjusting means includes：
Measure the line voltage in erecting bed area where the reactive voltage adjusting means；
The phase voltage of low-voltage circuit is calculated according to the line voltage and phase voltage calculation formula；Wherein, the phase voltage calculation is public
Formula is：UIRepresent line voltage, UNRepresent phase voltage.
9. a kind of reactive voltage adjusting means, it is characterised in that including voltage regulator module and reactive compensation module；The pressure regulator
The secondary side of module includes bucking coil, and the reactive compensation module includes multiple unit capacitor；The voltage regulator module primary side
One end connection signal input part, voltage regulator module primary side the other end connection zero line side, the benefit of voltage regulator module secondary side
The first end connection signal input part of coil is repaid, the second end of bucking coil connects one end of reactive compensation module, bucking coil
Three-terminal link reactive compensation module the other end, the reactive compensation module one end connection signal output part, the nothing
The other end connection zero line side of work(compensating module；
Before reactive voltage regulation, low-voltage circuit where reactive voltage adjusting means mount point is obtained in the first setting time section
Interior maximum load current；
Obtain the phase voltage of erecting bed area low-voltage circuit where the reactive voltage adjusting means；
Held according to the configuration that the maximum load current, phase voltage and capacity configuration formula calculate reactive voltage adjusting means
Amount；Wherein, the capacity configuration formula is：S=α AQKUNILmax；In formula, α is the number of phases of erecting bed area low-voltage circuit, AQTo promote
Increase coefficient, K is nargin coefficient, UNIt is phase voltage, ILmaxThe maximum load current of low-voltage circuit where device mount point；
The capacity of the voltage regulator module is configured according to the configuration capacity.
10. the collocation method of reactive voltage adjusting means according to claim 9, it is characterised in that configuring the tune
After the capacity of depressor module, the setting ratio according to the configuration capacity determines the reactive compensation module switching to the nothing
The capacity of work(voltage regulating device.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108599105A (en) * | 2018-05-30 | 2018-09-28 | 南京南瑞继保电气有限公司 | A kind of method of capacity nonlinear adjustment during series transformer longitudinal difference protection calculates |
| CN108599106A (en) * | 2018-05-30 | 2018-09-28 | 南京南瑞继保电气有限公司 | A kind of method that capacity adjusts during series transformer longitudinal difference protection calculates |
| CN110429592A (en) * | 2019-08-06 | 2019-11-08 | 国网四川省电力公司电力科学研究院 | A kind of 10kV route pressure regulator installation site and Capacity Selection method |
| CN110620384A (en) * | 2019-10-22 | 2019-12-27 | 国网湖南省电力有限公司 | User low voltage management method based on plug-and-play mobile SVC |
| US11881700B2 (en) | 2018-05-30 | 2024-01-23 | Nr Electric Co., Ltd. | Longitudinal differential protection method of transformer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5134356A (en) * | 1990-06-22 | 1992-07-28 | Board Of Regents Of The University Of Washington | Reactive power compensator |
| CN103441510A (en) * | 2013-08-05 | 2013-12-11 | 南方电网科学研究院有限责任公司 | Regional power grid reactive power optimization method relating to flexible HVDC system |
| CN103490410A (en) * | 2013-08-30 | 2014-01-01 | 江苏省电力设计院 | Micro-grid planning and capacity allocation method based on multi-objective optimization |
| CN105098777A (en) * | 2015-09-10 | 2015-11-25 | 国家电网公司 | Low-voltage assistant decision method for rural distribution network |
| CN105762792A (en) * | 2016-03-16 | 2016-07-13 | 国家电网公司 | Household average distribution transform capacity configuration method based on user behaviors |
| CN106208110A (en) * | 2016-08-31 | 2016-12-07 | 中国电力科学研究院 | A kind of screening technique of distribution network var compensation optimal allocation strategy |
-
2017
- 2017-03-24 CN CN201710183243.7A patent/CN106786633B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5134356A (en) * | 1990-06-22 | 1992-07-28 | Board Of Regents Of The University Of Washington | Reactive power compensator |
| CN103441510A (en) * | 2013-08-05 | 2013-12-11 | 南方电网科学研究院有限责任公司 | Regional power grid reactive power optimization method relating to flexible HVDC system |
| CN103490410A (en) * | 2013-08-30 | 2014-01-01 | 江苏省电力设计院 | Micro-grid planning and capacity allocation method based on multi-objective optimization |
| CN105098777A (en) * | 2015-09-10 | 2015-11-25 | 国家电网公司 | Low-voltage assistant decision method for rural distribution network |
| CN105762792A (en) * | 2016-03-16 | 2016-07-13 | 国家电网公司 | Household average distribution transform capacity configuration method based on user behaviors |
| CN106208110A (en) * | 2016-08-31 | 2016-12-07 | 中国电力科学研究院 | A kind of screening technique of distribution network var compensation optimal allocation strategy |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108599105A (en) * | 2018-05-30 | 2018-09-28 | 南京南瑞继保电气有限公司 | A kind of method of capacity nonlinear adjustment during series transformer longitudinal difference protection calculates |
| CN108599106A (en) * | 2018-05-30 | 2018-09-28 | 南京南瑞继保电气有限公司 | A kind of method that capacity adjusts during series transformer longitudinal difference protection calculates |
| CN108599105B (en) * | 2018-05-30 | 2020-03-20 | 南京南瑞继保电气有限公司 | Method for nonlinear capacity adjustment in longitudinal differential protection calculation of series transformer |
| US11881700B2 (en) | 2018-05-30 | 2024-01-23 | Nr Electric Co., Ltd. | Longitudinal differential protection method of transformer |
| CN110429592A (en) * | 2019-08-06 | 2019-11-08 | 国网四川省电力公司电力科学研究院 | A kind of 10kV route pressure regulator installation site and Capacity Selection method |
| CN110429592B (en) * | 2019-08-06 | 2022-11-08 | 国网四川省电力公司电力科学研究院 | 10kV line voltage regulator installation position and capacity selection method |
| CN110620384A (en) * | 2019-10-22 | 2019-12-27 | 国网湖南省电力有限公司 | User low voltage management method based on plug-and-play mobile SVC |
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