CN107276118A - The many distributed power sources of distribution line are exerted oneself control method for coordinating and system, storage medium - Google Patents
The many distributed power sources of distribution line are exerted oneself control method for coordinating and system, storage medium Download PDFInfo
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- CN107276118A CN107276118A CN201710402267.7A CN201710402267A CN107276118A CN 107276118 A CN107276118 A CN 107276118A CN 201710402267 A CN201710402267 A CN 201710402267A CN 107276118 A CN107276118 A CN 107276118A
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
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Abstract
Exerted oneself control method for coordinating and system, storage medium the present invention relates to a kind of many distributed power sources of distribution line, its method includes：Obtain the specified installed capacity value of distributed power source and the burden with power value of each distribution transformer low-pressure side and the starting active power output value for determining therefrom that each distributed power source of distribution line；A distributed power source is selected successively as target distribution formula power supply according to the head end distance apart from distribution line；Control the target distribution formula power supply currently selected to carry out active power output according to its specified installed capacity value, obtain the current voltage amplitude of each distributed power source grid entry point；When the current voltage amplitude of each distributed power source grid entry point is invalid no more than the condition of the first predetermined threshold value, the target distribution formula power supply currently selected is adjusted to originate active power output value progress active power output according to it.Using the present invention program, can avoid distribution line many distributed power sources exert oneself it is unordered chaotic and thus caused Over High-Limit Voltage the problem of.
Description
Technical field
The present invention relates to distribution network technology field, more particularly to a kind of many distributed power sources of distribution line, which are exerted oneself, coordinates control
Method processed, a kind of many distributed power sources of distribution line are exerted oneself coordinated control system and a kind of storage medium.
Background technology
With the raising of distributed generation technology and interconnection technology, the price of distributed power source progressively declines, and in recent years
Carry out the support energetically that distributed power generation obtains national policy so that distributed power source share shared in electricity market is increasingly
Greatly, increasing distributed power source is linked into power distribution network and run.
Distributed power source is general to access distribution network operation via 10kV distribution lines.Distributed power source access changes distribution
Trend in netting twine road, significant impact is produced to distribution network voltage distribution, especially when multiple distributed power sources access distribution line
When, also exist each distributed power source try to be the first, the unordered present situation exerted oneself, cause line voltage distribution to be constantly elevated, cause voltage more on
The quality of voltage problem of limit.When there is no the preferable control mode to solve many distributed power sources accesses at present, its unordered confusion of exerting oneself
The problem of, general fashion simply gives distributed power source one grid-connected power factor specification in some periods according to actual conditions
Examination, or not examine, and this mode is easily caused circuit global voltage when multiple distributed power sources access distribution line
The problem of higher and terminal voltage gets over the upper limit.
The content of the invention
Based on this, it is necessary to exert oneself unordered chaotic for many distributed power sources of distribution line and thus caused voltage is got over
The problem of upper limit, exerts oneself control method for coordinating and system, storage medium there is provided a kind of many distributed power sources of distribution line.
First aspect is exerted oneself control method for coordinating there is provided a kind of many distributed power sources of distribution line, and it includes：
Obtain specified installed capacity value and the institute of the distributed power source of each distributed power source grid entry point access of distribution line
State the burden with power value of each distribution transformer low-pressure side in distribution line；
The starting of each distributed power source is determined according to each specified installed capacity value and each burden with power value
Active power output value；
According to the head end apart from the distribution line from closely selecting a distributed power source conduct successively to remote order
Target distribution formula power supply；
The target distribution formula power supply currently selected is controlled to hold according to the specified installation for the target distribution formula power supply currently selected
Value carries out active power output, obtains the current voltage amplitude of each distributed power source grid entry point；
Each distributed power source grid entry point current voltage amplitude no more than the first predetermined threshold value condition not
During establishment, the target distribution formula power supply currently selected is adjusted to active according to the starting for the target distribution formula power supply currently selected
Power generating value carries out active power output.
With reference in a first aspect, in a kind of possible implementation of first aspect, many distributed electricals of above-mentioned distribution line
Source is exerted oneself control method for coordinating, in addition to：
The appearance lotus ratio of the distribution line is determined according to each specified installed capacity value and each burden with power value；
When the appearance lotus ratio is more than the second predetermined threshold value, into described according to each specified installed capacity value and each
The step of burden with power value determines the starting active power output value of each distributed power source.
With reference to first aspect or above-mentioned some possible implementations, in a kind of possible implementation of first aspect,
The many distributed power sources of above-mentioned distribution line are exerted oneself control method for coordinating, it is characterised in that also included：
When the appearance lotus is than no more than second predetermined threshold value, each distributed power source is controlled respectively according to each
From specified installed capacity value carry out active power output.
With reference to first aspect or above-mentioned some possible implementations, in a kind of possible implementation of first aspect,
The second above-mentioned predetermined threshold value is 1.
With reference to first aspect or above-mentioned some possible implementations, in a kind of possible implementation of first aspect,
Above-mentioned determines that the starting of each distributed power source has according to each specified installed capacity value and each burden with power value
Work(power generating value includes：
According toDetermine the starting active power output value of each distributed power source；
Wherein, SDGkRefer to the starting active power output value of the distributed power source of k-th of distributed power source grid entry point access, SDGNk
Refer to the specified installed capacity value of the distributed power source of k-th of distributed power source grid entry point access,Represent distributed to n
The specified installed capacity value summation of the distributed power source of power grid point access,Represent to m distribution transformer low-pressure sides
Burden with power value is summed, SDGNiRefer to the specified installed capacity value of the distributed power source of i-th of distributed power source grid entry point access, PLj
Refer to the burden with power value of jth distribution transformer low-pressure side, n refers to the total quantity of the distributed power source grid entry point of the distribution line, m
Refer to the total quantity of the distribution transformer in the distribution line.
Second aspect is exerted oneself coordinated control system there is provided a kind of many distributed power sources of distribution line, and it includes：
Data capture unit, the volume for obtaining the distributed power source that each distributed power source grid entry point of distribution line is accessed
Determine the burden with power value of each distribution transformer low-pressure side in installed capacity value and the distribution line；
Initial power generating value computing unit, for being determined according to each specified installed capacity value and each burden with power value
The starting active power output value of each distributed power source；
Power Selection unit, for according to the head end apart from the distribution line from closely selecting one successively to remote order
Individual distributed power source is used as target distribution formula power supply；
Exert oneself control unit, for the target distribution formula power supply that controls currently to select according to the target distribution formula currently selected
The specified installed capacity value of power supply carries out active power output, obtains the current voltage amplitude of each distributed power source grid entry point,
, ought when the current voltage amplitude of each distributed power source grid entry point is invalid no more than the condition of the first predetermined threshold value
Before the target distribution formula power supply selected be adjusted to starting active power output value progress according to the target distribution formula power supply currently selected
Active power output.
With reference to second aspect or above-mentioned some possible implementations, in a kind of possible implementation of second aspect,
The many distributed power sources of above-mentioned distribution line are exerted oneself coordinated control system, it is characterised in that also compare computing unit including holding lotus；
The appearance lotus is used to be determined according to each specified installed capacity value and each burden with power value than computing unit
The appearance lotus ratio of the distribution line；
The initial power generating value computing unit is when the appearance lotus ratio is more than the second predetermined threshold value, according to each described specified
Installed capacity value and each burden with power value determine the starting active power output value of each distributed power source.
With reference to second aspect or above-mentioned some possible implementations, in a kind of possible implementation of second aspect,
Above-mentioned control unit of exerting oneself is additionally operable to, when the appearance lotus is than no more than second predetermined threshold value, control each distribution
Formula power supply carries out active power output according to respective specified installed capacity value respectively.
With reference to second aspect or above-mentioned some possible implementations, in a kind of possible implementation of second aspect,
The above-mentioned initial power generating value computing unit according toDetermining the starting of each distributed power source has
Work(power generating value；
Wherein, SDGkRefer to the starting active power output value of the distributed power source of k-th of distributed power source grid entry point access, SDGNk
Refer to the specified installed capacity value of the distributed power source of k-th of distributed power source grid entry point access,Represent distributed to n
The specified installed capacity value summation of the distributed power source of power grid point access,Represent to m distribution transformer low-pressure sides
Burden with power value is summed, SDGHiRefer to the specified installed capacity value of the distributed power source of i-th of distributed power source grid entry point access, PLj
Refer to the burden with power value of jth distribution transformer low-pressure side, n refers to the total quantity of the distributed power source grid entry point of the distribution line, m
Refer to the total quantity of the distribution transformer in the distribution line.
The third aspect is stored thereon with computer program there is provided a kind of storage medium, real when the program is executed by processor
Now many distributed power sources of distribution line as described above exert oneself control method for coordinating the step of.
According to the scheme of the invention described above, it is the distribution for each distributed power source grid entry point access for obtaining distribution line
The burden with power value of each distribution transformer low-pressure side in the specified installed capacity value and the distribution line of power supply, according to each specified
Installed capacity value and each burden with power value determine the starting active power output value of each distributed power source, and match somebody with somebody according to described in distance
The head end of electric line from closely a distributed power source is selected as target distribution formula power supply successively to remote order, and control is current
The target distribution formula power supply selected carries out active power output according to the specified installed capacity value for the target distribution formula power supply currently selected,
The current voltage amplitude of each distributed power source grid entry point is obtained, in the current voltage width of each distributed power source grid entry point
Value it is invalid no more than the condition of the first predetermined threshold value when, by the target distribution formula power supply currently selected be adjusted to according to work as
Before the starting active power output value of target distribution formula power supply selected carry out active power output.In this way, distribution line can be avoided the occurrence of
Many distributed power sources exert oneself it is unordered chaotic and thus caused Over High-Limit Voltage the problem of, coordinated each distributed power source and gone out
Power, improves power supply quality, and can reduce the lifting of line voltage distribution, and lifting power distribution network distributed power source as much as possible is dissolved
Ability.
Brief description of the drawings
Fig. 1 be one embodiment in many distributed power sources of distribution line exert oneself control method for coordinating implementation process signal
Figure；
Fig. 2 is that the exert oneself implementation process of control method for coordinating of many distributed power sources of distribution line in another embodiment is shown
It is intended to；
Fig. 3 is that the exert oneself implementation process of control method for coordinating of many distributed power sources of distribution line in further embodiment is shown
It is intended to；
Refinement schematic flow sheets of the Fig. 4 for the step S306 in Fig. 3 in one of the embodiments；
Refinement schematic flow sheets of the Fig. 5 for the step S307 in Fig. 3 in one of the embodiments；
Fig. 6 is the circuit line chart of the 10kV distribution lines of a specific example；
Fig. 7 is that many distributed power sources of distribution line in one embodiment are exerted oneself the composition structural representation of coordinated control system
Figure；
Fig. 8 is that the exert oneself composition structure of coordinated control system of many distributed power sources of distribution line in another embodiment is shown
It is intended to.
Embodiment
For the objects, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with drawings and Examples, to this
Invention is described in further detail.It should be appreciated that embodiment described herein is only to explain the present invention,
Do not limit protection scope of the present invention.
It is shown in Figure 1, exerted oneself there is provided a kind of many distributed power sources of distribution line coordinate control in one of the embodiments
Method processed.As shown in figure 1, many distributed power sources of distribution line in the present embodiment are exerted oneself, control method for coordinating includes：
Step S101：The specified installation for obtaining the distributed power source of each distributed power source grid entry point access of distribution line is held
The burden with power value of each distribution transformer low-pressure side in value and the distribution line；
Step S102：Each distributed electrical is determined according to each specified installed capacity value and each burden with power value
The starting active power output value in source；
Step S103：According to the head end apart from the distribution line from closely selecting a distribution successively to remote order
Power supply is used as target distribution formula power supply；
Specifically, can first according to the head end apart from the distribution line from closely to remote order successively to each distributed electrical
Line label is entered in source, and a distributed power source is selected successively as target distribution formula electricity further according to the label of each distributed power source
Source, often selects a target distribution formula power supply, carries out active power output control according to steps S104- steps S105.Its
In, the numbering of the distributed power source nearest apart from the head end of the distribution line is No. 1, apart from the head end of the distribution line
The numbering of two near distributed power sources is No. 2, by that analogy.
Step S104：The target distribution formula power supply currently selected is controlled according to the volume for the target distribution formula power supply currently selected
Determine installed capacity value and carry out active power output, obtain the current voltage amplitude of each distributed power source grid entry point；
Step S105：Each distributed power source grid entry point current voltage amplitude no more than the first predetermined threshold value
Condition it is invalid when, the target distribution formula power supply currently selected is adjusted to according to the target distribution formula power supply currently selected
Originate active power output value and carry out active power output.
Wherein, the size of the first predetermined threshold value can be chosen according to actual needs, typically take feeder voltage acceptability limit
Higher limit.Supply voltage volume allows skew to be ± 7% for 10kV and following voltage class, therefore, for 10kV distribution wires
Road, general first predetermined threshold value value is 10.7kV, and wherein kV represents kilovolt.In working as each distributed power source grid entry point
There is any one to be more than the first predetermined threshold value, i.e. decision condition in preceding voltage magnitude invalid.
It is first to control the target distribution formula power supply currently selected according to working as it can be seen from above-mentioned steps S104, step S105
Before the specified installed capacity value of target distribution formula power supply selected carry out active power output, obtain each distributed power source after this
The current voltage amplitude of grid entry point, if the current voltage amplitude of each distributed power source grid entry point is no more than the first pre- gating
The condition of limit value is set up, then continues to control the target distribution formula power supply currently selected according to the target distribution formula power supply currently selected
Specified installed capacity value carry out active power output, each distributed power source grid entry point current voltage amplitude no more than the
When the condition of one predetermined threshold value is invalid, the target distribution formula power supply currently selected is adjusted to according to the target currently selected
The starting active power output value of distributed power source carries out active power output.
Wherein, after a distributed power source is selected every time as target distribution formula power supply, be performed both by step S104,
Step S105, until completing the active power output control of whole distributed power sources.Specifically, target distribution formula power supply is No. 1 point
During cloth power supply, No. 1 distributed power source of control carries out active power output according to the specified installed capacity value of No. 1 distributed power source, obtains
Take the current voltage amplitude of each distributed power source grid entry point；In the current voltage amplitude of each distributed power source grid entry point
When condition no more than the first predetermined threshold value is invalid, No. 1 distributed power source is adjusted to according to No. 1 distributed power source
Originate active power output value and carry out active power output, conversely, not adjusting the active power output of No. 1 distributed power source then, that is, continue according to No. 1
The specified installed capacity value of distributed power source carries out active power output, after the active power output control of No. 1 distributed power source is completed, choosing
No. 2 distributed power sources are selected as target distribution formula power supply, No. 2 distributed power sources are controlled according to the specified dress of No. 2 distributed power sources
Machine capability value carries out active power output, obtains the current voltage amplitude of each distributed power source grid entry point；In each distribution
When the current voltage amplitude of power grid point is invalid no more than the condition of the first predetermined threshold value, by No. 2 distributed power sources
It is adjusted to carry out active power output according to the starting active power output value of No. 2 distributed power sources, conversely, not adjusting No. 2 distributed electricals then
The active power output in source, that is, continue to carry out active power output according to the specified installed capacity value of No. 2 distributed power sources, complete No. 2 points
After the active power output control of cloth power supply, No. 3 distributed power sources of selection are as target distribution formula power supply, by that analogy.
Accordingly, the scheme in above-mentioned the present embodiment, it is that each distributed power source grid entry point for obtaining distribution line connects
The burden with power of each distribution transformer low-pressure side in the specified installed capacity value of the distributed power source entered and the distribution line
Value；According to each specified installed capacity value and each burden with power value determine the starting of each distributed power source it is active go out
Force value；According to the head end apart from the distribution line from closely selecting a distributed power source successively as target to remote order
Distributed power source；The target distribution formula power supply currently selected is controlled according to the specified installation for the target distribution formula power supply currently selected
Capability value carries out active power output, obtains the current voltage amplitude of each distributed power source grid entry point；In each distributed electrical
When the current voltage amplitude of source grid entry point is invalid no more than the condition of the first predetermined threshold value, by the target currently selected point
Cloth power supply is adjusted to carry out active power output according to the starting active power output value for the target distribution formula power supply currently selected.Due to this
It is invalid no more than the condition of the first predetermined threshold value in the voltage magnitude of each distributed power source grid entry point in embodiment scheme
When, the target distribution formula power supply currently selected can be adjusted to starting according to the target distribution formula power supply currently selected it is active go out
Force value carries out active power output, and many distributed power sources that can avoid the occurrence of distribution line are exerted oneself unordered chaotic and thus caused electricity
The problem of pressure gets over the upper limit, has coordinated each distributed power source and has exerted oneself, and improves power supply quality, and due to being from close to distribution line head end
Distributed power source start to carry out the control that distributed power source is exerted oneself successively, can so cause point close to distribution line head end
Cloth power supply carries out active power output control according to specified installed capacity value as far as possible, reduces the distance of power transmission, thus
Reduce the lifting of line voltage distribution, the digestion capability of lifting power distribution network distributed power source as much as possible.
In one of the embodiments, the coordination control as shown in Fig. 2 many distributed power sources of distribution line of the present invention are exerted oneself
Method, can also include：
Step S201：The distribution line is determined according to each specified installed capacity value and each burden with power value
Rong He ratios, when the appearance lotus ratio is more than the second predetermined threshold value, into it is above-mentioned according to each specified installed capacity value and
The step of each burden with power value determines the starting active power output value of each distributed power source.
Wherein, Rong He than calculation formula be formula below (1)
In formula (1), SDGNkRefer to the specified installed capacity value of the distributed power source of k-th of distributed power source grid entry point access,Represent that the specified installed capacity value of the distributed power source to n distributed power source grid entry point access is summed,Represent
Burden with power value summation to m distribution transformer low-pressure sides, SDGNiRefer to the distributed electrical of i-th of distributed power source grid entry point access
The specified installed capacity value in source, PLjRefer to the burden with power value of jth distribution transformer low-pressure side, n refers to the distribution of the distribution line
The total quantity of formula power grid point, m refers to the total quantity of the distribution transformer in the distribution line, and i and j are positive integer, and i
∈ [1, n], j ∈ [1, m].
In one of the embodiments, the coordination control as shown in Fig. 2 many distributed power sources of distribution line of the present invention are exerted oneself
Method, on the basis of a upper embodiment, can also include：
Step S202：When the appearance lotus is than no more than second predetermined threshold value, each distributed power source is controlled
Respectively active power output is carried out according to respective specified installed capacity value.
In the scheme of the present embodiment, by hold lotus than the different distributed power source of different choice exert oneself control mode, can
More reasonably to coordinate the active power output of many distributed power sources of distribution line.
Wherein, the size of the second predetermined threshold value can be chosen according to actual needs, it is preferred that the second predetermined threshold value is
1。
Being determined according to each specified installed capacity value and each burden with power value in any one above-mentioned embodiment
The step of starting active power output value of each distributed power source, can include：
The starting active power output value of each distributed power source is determined according to formula below (2)；
In formula (2), SDGkRefer to the starting active power output value of the distributed power source of k-th of distributed power source grid entry point access,
SDGNkRefer to the specified installed capacity value of the distributed power source of k-th of distributed power source grid entry point access,Represent to n points
The specified installed capacity value summation of the distributed power source of cloth power grid point access,Represent to m distribution transformer low pressure
The burden with power value summation of side, SDGNiRefer to the specified installed capacity of the distributed power source of i-th of distributed power source grid entry point access
Value, PLjRefer to the burden with power value of jth distribution transformer low-pressure side, n refers to the total of the distributed power source grid entry point of the distribution line
Quantity, m refers to the total quantity of the distribution transformer in the distribution line, and i and j are positive integer, and i ∈ [1, n], j ∈ [1,
m]。
Any one above-mentioned embodiment can preferably be applied to 10kV distribution lines, can solve current 10kV distribution
In circuit due to multiple distributed power sources exert oneself it is uncoordinated and trigger Problem of Over High-Limit Voltage.
Scheme in the various embodiments described above, a preferred embodiment presented below to the present invention program to say
It is bright.In this embodiment it is that exemplified by applied to 10kV distribution lines, but this can not constitute the restriction to the present invention program.
Fig. 3 is that many distributed power sources of distribution line in the embodiment are exerted oneself the implementation process schematic diagram of control method for coordinating.Such as Fig. 3 institutes
Show, many distributed power sources of the distribution line in embodiment control method for coordinating of exerting oneself comprises the following steps：
Step S301：Obtain the grid-connected point data of distributed power source and distribution transformer load data of 10kV distribution lines；
Here, the distributed power source grid entry point data include the sum of the distributed power source grid entry point of 10kV distribution lines
Measure n, the voltage magnitude V of each distributed power source grid entry pointDGiAnd the distributed power source of each distributed power source grid entry point access is specified
Installed capacity SDGNi；The distribution transformer load data include 10kV distribution lines in each distribution transformer low-pressure side it is active
Load PLj, i and j are positive integer, and i ∈ [1, n], j ∈ [1, m], m refer to the sum of the distribution transformer in 10kV distribution lines
Amount.
Step S302：Calculate the appearance lotus ratio of the 10kV distribution lines；
Specifically, using formula (1) as above carry out the 10kV distribution lines hold lotus than calculating.
Step S303：Judge the appearance lotus that calculates than whether being not more than 1, that is, judge the appearance lotus calculated than whether be less than or
Person is equal to 1, if so, then entering step S304, if it is not, then entering step S305；
Step S304：Each distributed power source is controlled to carry out active power output according to respective specified installed capacity value respectively；
Step S305：Number consecutively is carried out according to apart from 10kV distribution lines head end distance to each distributed power source；
Wherein, the distributed power source nearest apart from 10kV distribution line head ends is No. 1；
Step S306：It is true according to the burden with power value of the specified installed capacity value of each distributed power source and each distribution transformer
The starting active power output value of fixed each distributed power source；
Specifically, the calculating of the starting active power output value of each distributed power source is carried out using formula (2) as above.
Step S307：Active power output amendment is carried out successively according to numbering to each distributed power source；
Specifically, active power output is carried out successively according to order from small to large according to numbering to each distributed power source to repair
Just, until completing the amendment of exerting oneself of each distributed power source；
Step S308：Active power output value according to revised each distributed power source control each distributed power source it is active go out
Power.
As shown in figure 4, it is above-mentioned according to each specified installed capacity value and each burden with power value determine it is each described in
The step of starting active power output value of distributed power source, can include：
Step S401：Make k=1；
Here, k refers to the numbering of distributed power source.
Step S402：According toDetermine the starting active power output value of each distributed power source；
Wherein, SDGkRefer to the starting active power output value of k-th of distributed power source, SDGNkRefer to the specified of k-th distributed power source
Installed capacity value,Represent to sum to the specified installed capacity value of n distributed power source,Represent to m distribution transformers
The burden with power value summation of device low-pressure side, n refers to the distributed power source of each distributed power source grid entry point access of the distribution line
Total quantity, m refers to the total quantity of the distribution transformer in the distribution line, SDGNiRefer to the specified dress of i-th of distributed power source
Machine capability value, PLjRefer to the burden with power value of jth distribution transformer low-pressure side, i and j are positive integer, and i ∈ [1, n], j ∈ [1,
m]。
Step S403：Judge whether k is less than n, if so, after k value then is increased into 1, return to step S402；If it is not, then entering
Enter to each distributed power source according to numbering successively carry out exert oneself amendment the step of.
As shown in figure 5, it is above-mentioned to each distributed power source according to numbering successively exert oneself amendment the step of can be with
Including：
Step S501：Make k=1；
Here, k refers to the numbering of distributed power source.
Step S502：According to S 'DGk=SDGNkActive power output to k-th of distributed power source is modified；
Wherein, S 'DGkRepresent the active power output value of revised k-th of distributed power source, SDGNkRepresent k-th of distribution
The specified installed capacity value of power supply；
Step S503：Make x=1；
Here, x refers to the numbering of distributed power source grid entry point.
Step S504：Judge VDGxWhether 10.7kV is less than, if so, then entering step S505, if it is not, then entering step
S506；
Step S505：Judge whether x is less than n, if so, after x value then is increased into 1, return to step S504, if it is not, then entering
Enter step S507；
Step S506：The starting that the active power output value of k-th of distributed power source is adjusted into k-th of distributed power source is active
Power generating value；
That is, k-th of distributed power source active power output is returned as SDGk, now revised k-th of distributed power source has
Work(power generating value is the starting active power output value of k-th of distributed power source.
Step S507：Judge whether k is less than n, if so, then by after k value increase by 1, otherwise return to step S502, terminates
Control flow.
Scheme in the present embodiment, on the one hand accesses the actual conditions of 10kV distribution lines, from whole for distributed power source
The distributed power source that different on-positions are considered on body is exerted oneself coordinated allocation problem, to make up many distributed power sources at this stage
During access each distributed power source exert oneself it is unordered, lack instruct control defect.On the other hand, consider and be distributed under diverse location
The voltage influence problem that formula power supply is exerted oneself to 10kV distribution lines, when Rong He ratios are more than 1, from close to 10kV distribution line head ends
Distributed power source proceed by amendment of exerting oneself, reduce the distance of power transmission, thus reduce the lifting of line voltage distribution, to the greatest extent
The digestion capability of lifting power distribution network distributed power source more than possible.
Specific example
For a further understanding of the present invention program and beneficial effect, illustrated below by way of a specific example, at this
It is by taking the 10kV distribution lines that south electric network somewhere distributed power source more than one is accessed as an example in specific example.
Fig. 6 is the circuit line chart of the 10kV distribution lines of the specific example.The traditional unordered control of contrast and the present invention
The control effect of mode.
The implementation process of this tool example is as follows：
(1) the grid-connected point data of distributed power source and distribution transformer load data are collected；Its data message is as represented：
The parameter information table of table 1
| Distribution transformer | Burden with power (MVA) | Distributed power source grid entry point | Access capacity (MVA) |
| 1 | 0.31 | A | 1 |
| 2 | 0.32 | B | 2 |
| 3 | 0.34 | C | 2 |
| 4 | 0.31 | D | 1 |
| 5 | 0.33 | E | 1 |
| 6 | 0.35 |
(1) B=3.57 is calculated, more than 1；
(3) number consecutively, wherein distance are carried out according to apart from 10kV distribution lines head end distance to each distributed power source
The nearest distributed power source of 10kV distribution line head ends is No. 1；
(4) initial output distribution is carried out to each distributed power source, its initial output distribution is as shown in the table：
The initial output distribution table of table 2
| Distributed power source | Installed capacity (MVA) | Initially exert oneself (MVA) |
| 1 | 1 | 0.28 |
| 2 | 2 | 0.56 |
| 3 | 2 | 0.56 |
| 4 | 1 | 0.28 |
| 5 | 1 | 0.28 |
(5) amendment of exerting oneself is carried out successively by number to each distributed power source, each distributed power source is exerted oneself as follows after it is corrected
Table：
Table 3 corrects output distribution table
Exerted oneself with distributed power source before and after the present invention program and the contrast of 10kV distribution circuit electric voltages is as follows：
The control effect of table 4 is contrasted
By the content in table 4, under traditional unordered control, each distributed power source exert oneself it is unordered, endpoint node 4, section
Point 5, the Over High-Limit Voltage of node 6, with exerting oneself for each distributed power source on distribution line after the present invention program, has been coordinated, have
Selectively control end distributed power source, which is reduced, exerts oneself so that in terminal voltage Mass adjust- ment to acceptability limit, improve power network
Power supply quality and economic benefit.
The many distributed power sources of distribution line in above-described embodiment are exerted oneself control method for coordinating, and the present invention also provides one
Kind of many distributed power sources of distribution line are exerted oneself coordinated control system.In one of the embodiments, as shown in fig. 7, the present invention is real
Apply example many distributed power sources of distribution line exert oneself coordinated control system including data capture unit 701, initial power generating value calculate
Unit 702, Power Selection unit 703 and control unit 704 of exerting oneself, wherein：
Data capture unit 701, for obtaining the distributed power source that each distributed power source grid entry point of distribution line is accessed
Specified installed capacity value and the distribution line in each distribution transformer low-pressure side burden with power value；
Initial power generating value computing unit 702, for according to each specified installed capacity value and each burden with power value
Determine the starting active power output value of each distributed power source；
Power Selection unit 703, for according to the head end apart from the distribution line from closely being chosen successively to remote order
Go out a distributed power source as target distribution formula power supply；
Control unit of exerting oneself 704, the target distribution formula power supply for controlling currently to select divides according to the target currently selected
The specified installed capacity value of cloth power supply carries out active power output, obtains the current voltage width of each distributed power source grid entry point
Value, it is invalid no more than the condition of the first predetermined threshold value in the current voltage amplitude of each distributed power source grid entry point
When, the target distribution formula power supply currently selected is adjusted to the starting active power output according to the target distribution formula power supply currently selected
Value carries out active power output.
In one of the embodiments, the coordination control as shown in figure 8, many distributed power sources of distribution line of the present invention are exerted oneself
System can also include holding lotus than computing unit 801；
Rong He is used to determine institute according to each specified installed capacity value and each burden with power value than computing unit 801
State the appearance lotus ratio of distribution line；
Initial power generating value computing unit 702 is when the appearance lotus ratio is more than the second predetermined threshold value, according to each described specified
Installed capacity value and each burden with power value determine the starting active power output value of each distributed power source.
In one of the embodiments, control unit of exerting oneself 704 can be also used in the appearance lotus than no more than described by the
During two predetermined threshold values, each distributed power source is controlled to carry out active power output according to respective specified installed capacity value respectively.
In one of the embodiments, initial power generating value computing unit 702 can basisIt is determined that
The starting active power output value of each distributed power source；
Wherein, SDGkRefer to the starting active power output value of the distributed power source of k-th of distributed power source grid entry point access, SDGNk
Refer to the specified installed capacity value of the distributed power source of k-th of distributed power source grid entry point access,Represent that the specified installed capacity value of the distributed power source to n distributed power source grid entry point access is summed,Table
Show the burden with power value summation to m distribution transformer low-pressure sides, SDGNiRefer to the distribution of i-th of distributed power source grid entry point access
The specified installed capacity value of power supply, PLjRefer to the burden with power value of jth distribution transformer low-pressure side, n refers to point of the distribution line
The total quantity of cloth power grid point, m refers to the total quantity of the distribution transformer in the distribution line.
The many distributed power sources of distribution line provided in an embodiment of the present invention are exerted oneself the description of coordinated control system, are matched somebody with somebody with above-mentioned
The exert oneself description of control method for coordinating of many distributed power sources of electric line is similar, and how distributed with above-mentioned distribution line
Power supply is exerted oneself the beneficial effect of control method for coordinating, to save length, is repeated no more；Therefore, the above is carried to the embodiment of the present invention
The many distributed power sources of distribution line of confession are exerted oneself the ins and outs not disclosed in coordinated control system, refer to matching somebody with somebody for above-mentioned offer
The many distributed power sources of electric line are exerted oneself the description of control method for coordinating.
Based on example as described above, a kind of storage medium is also provided in one embodiment, computer journey is stored thereon with
Sequence, realizes distribution line many distributed electricals as above described in any one embodiment when the computer program is executed by processor
Source exert oneself control method for coordinating the step of.
One of ordinary skill in the art will appreciate that realize all or part of flow in above-described embodiment method, being can be with
The hardware of correlation is instructed to complete by computer program, it is non-volatile computer-readable that described program can be stored in one
Take in storage medium, in such as embodiment of the present invention, the program can be stored in the storage medium of computer system, and is calculated by this
At least one computing device in machine system, to realize the flow for including the embodiment such as above-mentioned each method.Wherein, it is described
Storage medium can be magnetic disc, CD, read-only memory (Read-Only Memory, ROM) or random access memory
(Random Access Memory, RAM) etc..
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 the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it 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 the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
- The control method for coordinating 1. a kind of many distributed power sources of distribution line are exerted oneself, it is characterised in that including：Obtain the specified installed capacity value of the distributed power source of each distributed power source grid entry point access of distribution line and described match somebody with somebody The burden with power value of each distribution transformer low-pressure side in electric line；Determine that the starting of each distributed power source is active according to each specified installed capacity value and each burden with power value Power generating value；According to the head end apart from the distribution line from closely selecting a distributed power source successively as target to remote order Distributed power source；The target distribution formula power supply currently selected is controlled according to the specified installed capacity value for the target distribution formula power supply currently selected Active power output is carried out, the current voltage amplitude of each distributed power source grid entry point is obtained；It is invalid no more than the condition of the first predetermined threshold value in the current voltage amplitude of each distributed power source grid entry point When, the target distribution formula power supply currently selected is adjusted to the starting active power output according to the target distribution formula power supply currently selected Value carries out active power output.
- The control method for coordinating 2. many distributed power sources of distribution line according to claim 1 are exerted oneself, it is characterised in that also wrap Include：The appearance lotus ratio of the distribution line is determined according to each specified installed capacity value and each burden with power value；When the appearance lotus ratio is more than the second predetermined threshold value, into described according to each specified installed capacity value and each described The step of burden with power value determines the starting active power output value of each distributed power source.
- The control method for coordinating 3. many distributed power sources of distribution line according to claim 2 are exerted oneself, it is characterised in that also wrap Include：When the appearance lotus is than no more than second predetermined threshold value, each distributed power source is controlled respectively according to respective Specified installed capacity value carries out active power output.
- The control method for coordinating 4. many distributed power sources of distribution line according to Claims 2 or 3 are exerted oneself, it is characterised in that Second predetermined threshold value is 1.
- The control method for coordinating 5. many distributed power sources of distribution line according to claim 4 are exerted oneself, it is characterised in that described The starting active power output of each distributed power source is determined according to each specified installed capacity value and each burden with power value The step of value, includes：According toDetermine the starting active power output value of each distributed power source；Wherein, SDGkRefer to the starting active power output value of the distributed power source of k-th of distributed power source grid entry point access, SDGNkRefer to kth The specified installed capacity value of the distributed power source of individual distributed power source grid entry point access,Represent to n distributed power source The specified installed capacity value summation of the distributed power source of grid entry point access,Represent to the active of m distribution transformer low-pressure sides Load value is summed, SDGNiRefer to the specified installed capacity value of the distributed power source of i-th of distributed power source grid entry point access, PLjRefer to the The burden with power value of j distribution transformer low-pressure sides, n refers to the total quantity of the distributed power source grid entry point of the distribution line, and m refers to institute State the total quantity of the distribution transformer in distribution line.
- The coordinated control system 6. a kind of many distributed power sources of distribution line are exerted oneself, it is characterised in that including：Data capture unit, the specified dress for obtaining the distributed power source that each distributed power source grid entry point of distribution line is accessed The burden with power value of each distribution transformer low-pressure side in machine capability value and the distribution line；Initial power generating value computing unit, for determining each institute according to each specified installed capacity value and each burden with power value State the starting active power output value of distributed power source；Power Selection unit, for according to the head end apart from the distribution line from closely selecting one point successively to remote order Cloth power supply is used as target distribution formula power supply；Exert oneself control unit, for the target distribution formula power supply that controls currently to select according to the target distribution formula power supply currently selected Specified installed capacity value carry out active power output, the current voltage amplitude of each distributed power source grid entry point is obtained, in each institute State distributed power source grid entry point current voltage amplitude it is invalid no more than the condition of the first predetermined threshold value when, will currently select The target distribution formula power supply gone out is adjusted to active according to the starting active power output value progress for the target distribution formula power supply currently selected Exert oneself.
- The coordinated control system 7. many distributed power sources of distribution line according to claim 6 are exerted oneself, it is characterised in that also wrap Include Rong He and compare computing unit；The appearance lotus is used for according to being determined each specified installed capacity value and each burden with power value than computing unit The appearance lotus ratio of distribution line；The initial power generating value computing unit is when the appearance lotus ratio is more than the second predetermined threshold value, according to each specified installation Capability value and each burden with power value determine the starting active power output value of each distributed power source.
- The coordinated control system 8. many distributed power sources of distribution line according to claim 7 are exerted oneself, it is characterised in that：The control unit of exerting oneself is additionally operable to, when the appearance lotus is than no more than second predetermined threshold value, control each described point Cloth power supply carries out active power output according to respective specified installed capacity value respectively.
- The coordinated control system 9. many distributed power sources of distribution line according to one of claim 6 to 8 are exerted oneself, its feature exists In：The initial power generating value computing unit according toDetermine that the starting of each distributed power source is active Power generating value；Wherein, SDGkRefer to the starting active power output value of the distributed power source of k-th of distributed power source grid entry point access, SDGNkRefer to kth The specified installed capacity value of the distributed power source of individual distributed power source grid entry point access,Represent to n distributed power source The specified installed capacity value summation of the distributed power source of grid entry point access,Represent to the active of m distribution transformer low-pressure sides Load value is summed, SDGNiRefer to the specified installed capacity value of the distributed power source of i-th of distributed power source grid entry point access, PLjRefer to the The burden with power value of j distribution transformer low-pressure sides, n refers to the total quantity of the distributed power source grid entry point of the distribution line, and m refers to institute State the total quantity of the distribution transformer in distribution line.
- 10. a kind of storage medium, is stored thereon with computer program, it is characterised in that the program is realized when being executed by processor The many distributed power sources of distribution line as described in one of claim 1 to 5 exert oneself control method for coordinating the step of.
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