CN108448591A - A kind of reactive-load compensation distal end control method for coordinating and device - Google Patents
A kind of reactive-load compensation distal end control method for coordinating and device Download PDFInfo
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- CN108448591A CN108448591A CN201810327506.1A CN201810327506A CN108448591A CN 108448591 A CN108448591 A CN 108448591A CN 201810327506 A CN201810327506 A CN 201810327506A CN 108448591 A CN108448591 A CN 108448591A
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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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1864—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein the stepless control of reactive power is obtained by at least one reactive element connected in series with a semiconductor switch
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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
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Abstract
The invention discloses a kind of reactive-load compensation distal end control method for coordinating and devices, it solves and is possible to the range that power factor caused by meeting is increased to permission according to power factor progress reactive-load compensation in practice, but the voltage level of taiwan area is still relatively low, and current the control of reactive power compensating strategy can not more accurately improve the horizontal technical problem of taiwan area voltage in the case.
Description
Technical field
The present invention relates to Technique of Compensating Capacitance for Reactive field more particularly to a kind of reactive-load compensation distal end control method for coordinating and
Device.
Background technology
In power generation is with electricity consumption link, power consumer needs draw required active power and nothing in power distribution network
Work(power.In order to avoid because of remote transmission reactive power, causing public change low pressure busbar voltage landing excessive, leading in power industry
Frequently with the strategy of local compensation, reactive power compensator is often equipped in the place of public low pressure side output.These devices are general
It is made of shunt capacitor, A.C. contactor, reactive compensation controlling device.
Become (sides 0.4kV) public at present generally carries out reactive-load compensation according to power factor, but in practice according to power because
Number carries out reactive-load compensation and is possible to the range that power factor can be caused to be increased to permission, but the voltage level of taiwan area is still relatively low,
Low-pressure reactive compensation control strategy can not more accurately improve the level of taiwan area voltage in the case at present.
Invention content
The present invention provides a kind of reactive-load compensation distal end control method for coordinating and device, solve in practice according to power because
Number carries out reactive-load compensation and is possible to the range that power factor caused by meeting is increased to permission, but the voltage level of taiwan area is still inclined
It is low, and the horizontal technology that current the control of reactive power compensating strategy can not more accurately improve taiwan area voltage in the case is asked
Topic.
The present invention provides a kind of reactive-load compensation distal end control method for coordinating, including：
S1, the network structure and line parameter circuit value for obtaining power distribution network under the same busbar of substation's sending end；
S2, the electrical quantity for obtaining each taiwan area low-voltage bus bar under the same busbar of substation's sending end, including：Voltage, inlet wire have
Work(power, inlet wire reactive power, outlet active power and outlet reactive power；
S3, network structure and line parameter circuit value according to power distribution network determine each taiwan area low-voltage bus bar voltage Ui(i=1,2 ...,
M) to the capacitance C of each taiwan area low-voltage compensation capacitancejThe functional relation of (j=1,2 ..., n), and calculate each of current time
The capacitance C for the low-voltage compensation capacitance that area has been put intoJ | t=t0；
S4, according to each taiwan area low-voltage bus bar voltage UiTo each taiwan area low-voltage compensation capacitance CjFunctional relation, calculate UiTo Cj
Partial derivative, and constitute t0Sensitivity matrix of the moment each taiwan area low-voltage bus bar voltage to the low-voltage compensation capacitance of each taiwan area；
S5, selection t0The minimum taiwan area T of voltage in moment each taiwan areal, as taiwan area TlLow-voltage bus bar voltage it is pre- less than first
When setting voltage, taiwan area T is judgedlCapacitance whether all finished, if so, according to sensitivity matrix, except taiwan area TlIn addition
Taiwan area in select level of sensitivity for first taiwan area input compensation capacitance, and return to step S2 enters iteration, if it is not, then throwing
Taiwan area TlCapacitance, and return to step S2 enters iteration.
Optionally, a kind of reactive-load compensation distal end control method for coordinating provided by the invention further includes：
As taiwan area TlLow-voltage bus bar voltage be not less than the first preset voltage when, return to step S2 enters iteration.
Optionally, before return to step S2 enters iteration, further include：
S6, each taiwan area low-voltage bus bar voltage U under substation bus bar is reacquiredi, and judge each taiwan area low-voltage bus bar voltage Ui
Whether second preset voltage is below, if so, without carrying out reactive-load compensation, and return to step S2 enters iteration, if it is not, then removing
Except the compensating electric capacity put into step S5, and according to sensitivity matrix, in addition to the taiwan area of input compensation capacitance in step S5,
Select level of sensitivity for first taiwan area input compensation capacitance, and return to step S2 enters iteration.
Optionally, the first preset voltage is the permission lower voltage limit of national regulations, and the second preset voltage is national regulations
Allow upper voltage limit.
The present invention provides a kind of reactive-load compensation distal end cooperative control devices, including：
First acquisition unit, for obtaining the network structure of power distribution network and circuit ginseng under the same busbar of substation's sending end
Number；
Second acquisition unit, the electrical quantity for obtaining each taiwan area low-voltage bus bar under the same busbar of substation's sending end, packet
It includes：Voltage, inlet wire active power, inlet wire reactive power, outlet active power and outlet reactive power；
Computing unit determines each taiwan area low-voltage bus bar voltage U for the network structure and line parameter circuit value according to power distribution networki
(i=1,2 ..., m) to the capacitance C of each taiwan area low-voltage compensation capacitancejThe functional relation of (j=1,2 ..., n), and calculate current
The capacitance C for the low-voltage compensation capacitance that each taiwan area at moment has been put intoJ | t=t0；
Sensitivity matrix Component units, for according to each taiwan area low-voltage bus bar voltage UiTo each taiwan area low-voltage compensation capacitance Cj
Functional relation, calculate UiTo CjPartial derivative, and constitute t0Low-voltage compensation of the moment each taiwan area low-voltage bus bar voltage to each taiwan area
The sensitivity matrix of capacitance；
First compensating unit, for selecting t0The minimum taiwan area T of voltage in moment each taiwan areal, as taiwan area TlLow-voltage bus bar
When voltage is less than the first preset voltage, taiwan area T is judgedlCapacitance whether all finished, if so, according to sensitivity square
Battle array, except taiwan area TlIt selects level of sensitivity for first taiwan area input compensation capacitance in taiwan area in addition, and jumps to second
Acquiring unit enters iteration, if it is not, then throwing taiwan area TlCapacitance, and jump to second acquisition unit and enter iteration.
Optionally, a kind of reactive-load compensation distal end cooperative control device provided by the invention further includes：
Iteration unit, for working as taiwan area TlLow-voltage bus bar voltage be not less than the first preset voltage when, jump to second and obtain
Unit is taken to enter iteration.
Optionally, a kind of reactive-load compensation distal end cooperative control device provided by the invention further includes：
Second compensating unit, for reacquiring each taiwan area low-voltage bus bar voltage U under substation bus bari, and judge each
Area low-voltage bus bar voltage UiWhether second preset voltage is below, if so, without carrying out reactive-load compensation, and jump to second and obtain
Unit is taken to enter iteration, if it is not, then remove the compensating electric capacity of the first compensating unit input, and according to sensitivity matrix, except the
One compensating unit is put into other than the taiwan area of capacitance, is selected level of sensitivity for first taiwan area input compensation capacitance, and is jumped to
Second acquisition unit enters iteration.
Optionally, the first preset voltage is the permission lower voltage limit of national regulations, and the second preset voltage is national regulations
Allow upper voltage limit.
The present invention provides a kind of reactive-load compensation distal end cooperative control devices, including：
Memory, for storing instruction；
Processor, is coupled to the memory, and the processor is configured as holding based on the instruction that the memory stores
Row realize as above any one of described in method.
The present invention provides a kind of computer readable storage medium, the computer-readable recording medium storage has computer
Instruction, when described instruction is executed by processor realize as above any one of described in method.
As can be seen from the above technical solutions, the present invention has the following advantages：
The present invention provides a kind of reactive-load compensation distal end control method for coordinating, including：S1, acquisition substation sending end are same
The network structure and line parameter circuit value of power distribution network under busbar；S2, each taiwan area low-voltage bus bar under the same busbar of substation's sending end is obtained
Electrical quantity, including：Voltage, inlet wire active power, inlet wire reactive power, outlet active power and outlet reactive power；S3, root
According to the network structure and line parameter circuit value of power distribution network, each taiwan area low-voltage bus bar voltage U is determinedi(i=1,2 ..., m) it is low to each taiwan area
Press the capacitance C of compensating electric capacityjThe functional relation of (j=1,2 ..., n), and each taiwan area for calculating current time put into it is low
Press the capacitance C of compensating electric capacityJ | t=t0；S4, according to each taiwan area low-voltage bus bar voltage UiTo each taiwan area low-voltage compensation capacitance CjLetter
Number relationship, calculates UiTo CjPartial derivative, and constitute t0Low-voltage compensation capacitance of the moment each taiwan area low-voltage bus bar voltage to each taiwan area
Sensitivity matrix；S5, selection t0The minimum taiwan area T of voltage in moment each taiwan areal, as taiwan area TlLow-voltage bus bar voltage be less than
When the first preset voltage, taiwan area T is judgedlCapacitance whether all finished, if so, according to sensitivity matrix, except platform
Area TlSelect level of sensitivity for first taiwan area input compensation capacitance in taiwan area in addition, and return to step S2 enters iteration,
If it is not, then throwing taiwan area TlCapacitance, and return to step S2 enters iteration.
In the present invention, according to the network structure and line parameter circuit value of power distribution network under substation bus bar, it is female to calculate each taiwan area low pressure
The capacitance of the low-voltage compensation capacitance of line, then the partial derivative that each taiwan area public affairs become the low-voltage compensation capacitance of side is calculated, and constitute each
Area's low-voltage bus bar voltage is to the sensitivity matrix of the low-voltage compensation capacitance of each taiwan area, when there is the low pressure less than the first preset voltage
When busbar voltage, find in addition to low-voltage platform area to the maximum taiwan area of low-voltage compensation capacitance sensitivity degree and the first low pressure of input
Compensating electric capacity carries out capacitor switching, solves and is possible to power caused by meeting according to power factor progress reactive-load compensation in practice
Factor is increased to the range of permission, but the voltage level of taiwan area is still relatively low, and current the control of reactive power compensating strategy can not be
The horizontal technical problem of taiwan area voltage is more accurately improved in the case of this.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of flow signal of one embodiment of reactive-load compensation distal end control method for coordinating provided by the invention
Figure；
Fig. 2 is a kind of flow signal of another embodiment of reactive-load compensation distal end control method for coordinating provided by the invention
Figure；
Fig. 3 is a kind of structural representation of one embodiment of reactive-load compensation distal end cooperative control device provided by the invention
Figure；
Fig. 4 is a kind of structural representation of another embodiment of reactive-load compensation distal end cooperative control device provided by the invention
Figure；
Fig. 5 is a kind of schematic network structure of power distribution network；
Fig. 6 is a kind of power distribution network network structure equivalent circuit diagram；
Fig. 7 is the schematic network structure of another power distribution network；
Fig. 8 is another power distribution network network structure equivalent circuit diagram.
Specific implementation mode
An embodiment of the present invention provides a kind of reactive-load compensation distal end control method for coordinating and device, solves foundation in practice
Power factor carry out reactive-load compensation be possible to can caused by power factor be increased to the range of permission, but the voltage level of taiwan area according to
It is so relatively low, and current the control of reactive power compensating strategy can not more accurately improve the horizontal skill of taiwan area voltage in the case
Art problem.
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that disclosed below
Embodiment be only a part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this field
All other embodiment that those of ordinary skill is obtained without making creative work, belongs to protection of the present invention
Range.
Referring to Fig. 1, the present invention provides a kind of one embodiment of reactive-load compensation distal end control method for coordinating, including：
101, the network structure and line parameter circuit value of power distribution network under the same busbar of substation's sending end are obtained；
It should be noted that firstly the need of entire power distribution network under acquisition substation 10kV or 35kV busbar in the present embodiment
Network structure and line parameter circuit value.
102, the electrical quantity of each taiwan area low-voltage bus bar under the same busbar of substation's sending end is obtained, including：Voltage, inlet wire have
Work(power, inlet wire reactive power, outlet active power and outlet reactive power；
It should be noted that in the case where obtaining substation's sending end same busbar power distribution network network structure and line parameter circuit value
Afterwards, monitor and obtain each taiwan area low-voltage bus bar voltage under substation's 10kV or 35kV busbar, inlet wire active power, inlet wire is idle work(
Rate, outlet active power and outlet reactive power.
103, according to the network structure of power distribution network and line parameter circuit value, each taiwan area low-voltage bus bar voltage U is determinedi(i=1,
2 ..., m) to the capacitance C of each taiwan area low-voltage compensation capacitancejThe functional relation of (j=1,2 ..., n), and calculate current time
The capacitance C for the low-voltage compensation capacitance that each taiwan area has been put intoJ | t=t0；
It should be noted that according to the network structure and line parameter circuit value of power distribution network, determine each taiwan area low-voltage bus bar to each
The functional relation of the capacitance of area's low-voltage compensation capacitance, specially：Current substation 10kV busbar inlet wires active power, into
Line reactive power and low-voltage bus bar voltage are regarded as constant, and the outlet active power and wireless reactive power that each user draws are regarded as
Constant, by the network structure of 10kV power distribution networks, the load under each taiwan area low-voltage bus bar is equivalent at impedance, such as Fig. 7 and Fig. 8 institutes
Show, to write out each taiwan area voltage bus to the functional relation of the capacitance of each taiwan area low-voltage compensation capacitance, i.e. nodal voltage equation：
Wherein, jBci, i=1,2,3 be the corresponding susceptance of each taiwan area compensating electric capacity, eliminates the voltage of 4 nodes, obtains each
Taiwan area node voltage is about the display expression formula of the susceptance of each taiwan area low-voltage compensation capacitance：
Ui=| f (BC1,BC2,BC3) |, i=1,2,3.
104, according to each taiwan area low-voltage bus bar voltage Ui to each taiwan area low-voltage compensation capacitance CjFunctional relation, calculate UiIt is right
CjPartial derivative, and constitute sensitivity matrix of the t0 moment each taiwan area low-voltage bus bar voltage to the low-voltage compensation capacitance of each taiwan area；
It should be noted that obtaining each taiwan area low-voltage bus bar voltage Ui to each taiwan area low-voltage compensation capacitance CjFunction close
After system, U is calculatediTo CjPartial derivative, i.e., to formula Ui=| f (BC1,BC2,BC3) |, i=1 in 2,3, enables UiRespectively to BC1,
BC2,BC3Seek partial derivative, you can obtain t0Sensitivity of the moment each taiwan area low-voltage bus bar voltage to the low-voltage compensation capacitance of each taiwan area
Matrix：
General reactive-load compensation strategy is judged the idle partial derivative that capacitance generates using voltage, and this Shen
Please in be that sensitivity matrix is built to the partial derivative of capacitance using voltage, since the reactive power itself that capacitor is born is
It is exactly Q to have relationship with voltagec=V22 π fC, that is QcIt can be influenced by voltage and input capacitance size, QcBe not completely by
What capacitor determined, the capacitance size of capacitor itself is only fully controllable, therefore the compensation method of the application is more accurate.
105, t is selected0The minimum taiwan area T of voltage in moment each taiwan areal, as taiwan area TlLow-voltage bus bar voltage be less than first
When preset voltage, taiwan area T is judgedlCapacitance whether all finished, if so, according to sensitivity matrix, except taiwan area TlWith
Selected in outer taiwan area level of sensitivity for first taiwan area input compensation capacitance, and return to step 102 enter iteration, if it is not,
Then throw taiwan area TlCapacitance, and return to step 102 enter iteration.；
It should be noted that selection t0The minimum taiwan area T of voltage in moment each taiwan areal, as taiwan area TlLow-voltage bus bar voltage
When less than the first preset voltage, T is judgedlCapacitance whether all finished, if so, according to sensitivity matrix, except platform
Area TlSelected in taiwan area in addition level of sensitivity for first taiwan area input compensation capacitance, such as：If U1Voltage is less than first
Preset voltage, i.e. the permission lower voltage limit of national regulations then find the maximum in addition to the 1st element in the 1st row of sensitivity matrix
Value, and using the corresponding node of the maximum value as the node of control capacitor switching, to improve voltage level, and work as taiwan area Tl's
When low-voltage bus bar voltage is not less than the first preset voltage, return to step 102, into iteration.
In the embodiment of the present invention, according to the network structure and line parameter circuit value of power distribution network under substation bus bar, each taiwan area is calculated
The capacitance of the low-voltage compensation capacitance of low-voltage bus bar, then calculate the partial derivative that each taiwan area public affairs become the low-voltage compensation capacitance of side, and structure
At each taiwan area low-voltage bus bar voltage to the sensitivity matrix of the low-voltage compensation capacitance of each taiwan area, it is less than the first preset voltage when existing
Low-voltage bus bar voltage when, find in addition to low-voltage platform area to the maximum taiwan area of low-voltage compensation capacitance sensitivity degree and put into the
One low-voltage compensation capacitance carries out capacitor switching, solves and is possible to cause according to power factor progress reactive-load compensation in practice
Power factor be increased to the range of permission, but the voltage level of taiwan area is still relatively low, and current the control of reactive power compensating strategy
The horizontal technical problem of taiwan area voltage can not be more accurately improved in the case.
It is to be said to what a kind of one embodiment of reactive-load compensation distal end control method for coordinating provided by the invention carried out above
It is bright, a kind of another embodiment of reactive-load compensation distal end control method for coordinating provided by the invention will be illustrated below.
Referring to Fig. 2, the present invention provides a kind of another embodiment of reactive-load compensation distal end control method for coordinating, packet
It includes：
201, the network structure and line parameter circuit value of power distribution network under the same busbar of substation's sending end are obtained；
It should be noted that firstly the need of entire power distribution network under acquisition substation 10kV or 35kV busbar in the present embodiment
Network structure and line parameter circuit value.
202, the electrical quantity of each taiwan area low-voltage bus bar under the same busbar of substation's sending end is obtained, including：Voltage, inlet wire have
Work(power, inlet wire reactive power, outlet active power and outlet reactive power；
It should be noted that after the network structure and line parameter circuit value for obtaining power distribution network, monitors and obtain substation
Each taiwan area low-voltage bus bar voltage, inlet wire active power, inlet wire reactive power, outlet active power and go out under 10kV or 35kV busbares
Line reactive power.
203, according to the network structure of power distribution network and line parameter circuit value, each taiwan area low-voltage bus bar voltage U is determinedi(i=1,
2 ..., m) to the capacitance C of each taiwan area low-voltage compensation capacitancejThe functional relation of (j=1,2 ..., n), and calculate current time
The capacitance C for the low-voltage compensation capacitance that each taiwan area has been put intoJ | t=t0；
It should be noted that according to the network structure and line parameter circuit value of power distribution network, determine each taiwan area low-voltage bus bar to each
The functional relation of the capacitance of area's low-voltage compensation capacitance, specially：Current substation 10kV busbar inlet wires active power, into
Line reactive power and low-voltage bus bar voltage are regarded as constant, and the outlet active power and wireless reactive power that each user draws are regarded as
Constant, by the network structure of 10kV power distribution networks, the load under each taiwan area low-voltage bus bar is equivalent at impedance, such as Fig. 7 and Fig. 8 institutes
Show, to write out each taiwan area voltage bus to the functional relation of the capacitance of each taiwan area low-voltage compensation capacitance, i.e. nodal voltage equation：
Wherein, jBci, i=1,2,3 be the corresponding susceptance of each taiwan area compensating electric capacity, eliminates the voltage of 4,5,6 nodes, obtains
Each taiwan area node voltage is about the display expression formula of the susceptance of each taiwan area low-voltage compensation capacitance：
Ui=| f (BC1,BC2,BC3) |, i=1,2,3.
204, according to each taiwan area low-voltage bus bar voltage UiTo each taiwan area low-voltage compensation capacitance CjFunctional relation, calculate UiIt is right
CjPartial derivative, and constitute t0Sensitivity matrix of the moment each taiwan area low-voltage bus bar voltage to the low-voltage compensation capacitance of each taiwan area；
It should be noted that obtaining each taiwan area low-voltage bus bar voltage UiTo each taiwan area low-voltage compensation capacitance CjFunction close
After system, U is calculatediTo CjPartial derivative, i.e., to formula Ui=| f (BC1,BC2,BC3) |, i=1 in 2,3, enables UiRespectively to BC1,
BC2,BC3Seek partial derivative, you can obtain t0Sensitivity of the moment each taiwan area low-voltage bus bar voltage to the low-voltage compensation capacitance of each taiwan area
Matrix：
General reactive-load compensation strategy is judged the idle partial derivative that capacitance generates using voltage, and this Shen
Please in be that sensitivity matrix is built to the partial derivative of capacitance using voltage, since the reactive power itself that capacitor is sent out is
It is exactly Q to have relationship with voltagec=V22 π fC, that is QcIt can be influenced by voltage and input capacitance size, QcIt is not capacitor
Nominal capacity, at present other methods compensated according to capacitor nominal capacity, it is more likely that can put into when voltage is low it is excessive
Capacitance, cause voltage higher, and the application is to be compensated according to capacitance, therefore the compensation method of the application is more
Accurately.
205, t is selected0The minimum taiwan area T of voltage in moment each taiwan areal, as taiwan area TlLow-voltage bus bar voltage be less than first
When preset voltage, taiwan area T is judgedlCapacitance whether all finished, if so, according to sensitivity matrix, except taiwan area TlWith
It selects level of sensitivity for first taiwan area input compensation capacitance in outer taiwan area, and step 206 is executed, if it is not, then throwing taiwan area
The capacitance of Tl, and execute step 206；
It should be noted that selection t0The minimum taiwan area T of voltage in moment each taiwan areal, as taiwan area TlLow-voltage bus bar voltage
When less than the first preset voltage, taiwan area T is judgedlCapacitance whether all finished, if so, according to sensitivity matrix,
Except taiwan area TlSelected in taiwan area in addition level of sensitivity for first taiwan area input compensation capacitance, such as：If U1Voltage is less than
First preset voltage, i.e. the permission lower voltage limit of national regulations are then found in the 1st row of sensitivity matrix in addition to the 1st element
Maximum value, and using the corresponding node of the maximum value as the node of control capacitor switching, to improve voltage level；
And work as taiwan area TlLow-voltage bus bar voltage be not less than the first preset voltage when, direct return to step 202, into repeatedly
Generation.
206, each taiwan area low-voltage bus bar voltage U under substation bus bar is reacquiredi, and judge each taiwan area low-voltage bus bar voltage
UiWhether second preset voltage is below, if so, without carrying out reactive-load compensation, and return to step 202 enters iteration, if it is not,
The compensating electric capacity put into step 205 is then removed, and according to sensitivity matrix, the platform of input compensation capacitance in except step 205
Other than area, select level of sensitivity for first taiwan area input compensation capacitance, and return to step 202 enter iteration；
It should be noted that after carrying out first time reactive-load compensation, it is low to need to reacquire each taiwan area under substation bus bar
Press busbar voltage Ui, and judge each taiwan area low-voltage bus bar voltage UiWhether second preset voltage, the i.e. permission of national regulations are below
Upper voltage limit if it is not, then removing the compensating electric capacity put into step 205, and according to sensitivity matrix, is thrown in except step 205
Other than the taiwan area for entering compensating electric capacity, select level of sensitivity for first taiwan area input compensation capacitance, and return to step 202, into
Enter iteration.
In the embodiment of the present invention, by the network structure according to power distribution network, the line voltage value of each taiwan area is calculated, when wherein
When one low pressure node voltage is relatively low, sensitivity journey of the node to the voltage of other low pressure nodes to compensating electric capacity is accurately found
Maximum low pressure node is spent, to carry out capacitor switching, solves and carries out the reactive-load compensation meeting of being possible to according to power factor in practice
Caused power factor is increased to the range of permission, but the voltage level of taiwan area is still relatively low, and current the control of reactive power compensating
Strategy can not more accurately improve the horizontal technical problem of taiwan area voltage in the case.
It is to be carried out to a kind of another embodiment of reactive-load compensation distal end control method for coordinating provided by the invention above
Illustrate, a kind of one embodiment of reactive-load compensation distal end cooperative control device provided by the invention will be illustrated below.
Referring to Fig. 3, the present invention provides a kind of one embodiment of reactive-load compensation distal end cooperative control device, including：
First acquisition unit 301, network structure and circuit for obtaining power distribution network under the same busbar of substation's sending end
Parameter；
Second acquisition unit 302, the electrical quantity for obtaining each taiwan area low-voltage bus bar under the same busbar of substation's sending end,
Including：Voltage, inlet wire active power, inlet wire reactive power, outlet active power and outlet reactive power；
Computing unit 303 determines each taiwan area low-voltage bus bar voltage for the network structure and line parameter circuit value according to power distribution network
Ui(i=1,2 ..., m) to the capacitance C of each taiwan area low-voltage compensation capacitancejThe functional relation of (j=1,2 ..., n), and calculate and work as
The capacitance C for the low-voltage compensation capacitance that each taiwan area at preceding moment has been put intoJ | t=t0；
Sensitivity matrix Component units 304, for according to each taiwan area low-voltage bus bar voltage UiTo each taiwan area low-voltage compensation electricity
Hold CjFunctional relation, calculate UiTo CjPartial derivative, and constitute t0Low pressure of the moment each taiwan area low-voltage bus bar voltage to each taiwan area
The sensitivity matrix of compensating electric capacity；
First compensating unit 305, for selecting t0The minimum taiwan area T of voltage in moment each taiwan areal, as taiwan area TlLow pressure
When busbar voltage is less than the first preset voltage, taiwan area T is judgedlCapacitance whether all finished, if so, according to sensitivity
Matrix, except taiwan area TlIt selects level of sensitivity for first taiwan area input compensation capacitance in taiwan area in addition, and jumps to
Two compensating units 307, if it is not, then throwing taiwan area TlCapacitance, and jump to the second compensating unit 307；
Iteration unit 306, for working as taiwan area TlLow-voltage bus bar voltage be not less than the first preset voltage when, jump to second
Acquiring unit 302 enters iteration；
Second compensating unit 307, for reacquiring each taiwan area low-voltage bus bar voltage U under substation bus bari, and judge each
Taiwan area low-voltage bus bar voltage UiWhether second preset voltage is below, if so, without carrying out reactive-load compensation, and jump to second
Acquiring unit 302 enters iteration, if it is not, the compensating electric capacity of the input of step the first compensating unit 305 is then removed, and according to sensitivity
Matrix in addition to the taiwan area of the first compensating unit 305 input capacitance, is selecting taiwan area input compensation of the level of sensitivity for first
Capacitance, and jump to second acquisition unit 302 and enter iteration；
First preset voltage is the permission lower voltage limit of national regulations, and the second preset voltage is the permission voltage of national regulations
The upper limit.
In the present invention, according to the network structure and line parameter circuit value of power distribution network under substation bus bar, it is female to calculate each taiwan area low pressure
The capacitance of the low-voltage compensation capacitance of line, then the partial derivative that each taiwan area public affairs become the low-voltage compensation capacitance of side is calculated, and constitute each
Area's low-voltage bus bar voltage is to the sensitivity matrix of the low-voltage compensation capacitance of each taiwan area, when there is the low pressure less than the first preset voltage
When busbar voltage, find in addition to low-voltage platform area to the maximum taiwan area of low-voltage compensation capacitance sensitivity degree and the first low pressure of input
Compensating electric capacity carries out capacitor switching, solves and is possible to power caused by meeting according to power factor progress reactive-load compensation in practice
Factor is increased to the range of permission, but the voltage level of taiwan area is still relatively low, and current the control of reactive power compensating strategy can not be
The horizontal technical problem of taiwan area voltage is more accurately improved in the case of this.
It is to be said to what a kind of one embodiment of reactive-load compensation distal end cooperative control device provided by the invention carried out above
It is bright, a kind of another embodiment of reactive-load compensation distal end cooperative control device provided by the invention will be illustrated below.
As shown in figure 4, the present invention provides a kind of another embodiment of reactive-load compensation distal end cooperative control device, packet
It includes：
Memory 401, for storing instruction；
Processor 402 is coupled to memory 401, and it is real that processor 402 is configured as the instruction execution stored based on memory
The method that now any embodiment is related to such as in Fig. 1 or Fig. 2.
Reactive-load compensation distal end as shown in Figure 4 cooperative control device further includes communication interface 403, for being carried out with miscellaneous equipment
Information exchange.The device further includes bus 404 simultaneously, and processor 402, communication interface 403 and memory 401 pass through bus
404 complete mutual communication.
Memory 401 can include high-speed RAM memory, also can further include nonvolatile memory (non-volatile
Memory), a for example, at least magnetic disk storage.Memory 401 can also be memory array.Memory 401 be also possible to by
Piecemeal, and block can be combined into virtual volume by certain rule.
In addition, processor 402 can be a central processor CPU, or it can be application-specific integrated circuit ASIC
(application specific integrated circuit), or be arranged to implement the one of the embodiment of the present invention
A or multiple integrated circuits.
It is to be carried out to a kind of another embodiment of reactive-load compensation distal end cooperative control device provided by the invention above
Illustrate, a kind of one embodiment of computer readable storage medium provided by the invention will be illustrated below.
A kind of one embodiment of computer readable storage medium provided by the invention, computer-readable recording medium storage
There is computer instruction, the method that any embodiment is related in such as Fig. 1 or Fig. 2 is realized when described instruction is executed by processor.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit
It closes or communicates to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can be stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the present invention
Portion or part steps.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Stating embodiment, invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
Modification or replacement, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of reactive-load compensation distal end control method for coordinating, which is characterized in that including：
S1, the network structure and line parameter circuit value for obtaining power distribution network under the same busbar of substation's sending end；
S2, the electrical quantity for obtaining each taiwan area low-voltage bus bar under the same busbar of substation's sending end, including：Voltage, inlet wire wattful power
Rate, inlet wire reactive power, outlet active power and outlet reactive power；
S3, network structure and line parameter circuit value according to power distribution network determine each taiwan area low-voltage bus bar voltage Ui(i=1,2 ..., m) it is right
The capacitance C of each taiwan area low-voltage compensation capacitancejThe functional relation of (j=1,2 ..., n), and calculate each taiwan area at current time
The capacitance C of the low-voltage compensation capacitance of inputJ | t=t0；
S4, according to each taiwan area low-voltage bus bar voltage UiTo each taiwan area low-voltage compensation capacitance CjFunctional relation, calculate UiTo CjIt is inclined
Derivative, and constitute t0Sensitivity matrix of the moment each taiwan area low-voltage bus bar voltage to the low-voltage compensation capacitance of each taiwan area；
S5, selection t0The minimum taiwan area T of voltage in moment each taiwan areal, as taiwan area TlLow-voltage bus bar voltage be less than the first preset electricity
When pressure, taiwan area T is judgedlCapacitance whether all finished, if so, according to sensitivity matrix, except taiwan area TlPlatform in addition
Select level of sensitivity for first taiwan area input compensation capacitance in area, and return to step S2 enters iteration, if it is not, then throwing taiwan area
TlCapacitance, and return to step S2 enters iteration.
2. reactive-load compensation distal end according to claim 1 control method for coordinating, which is characterized in that further include：
As taiwan area TlLow-voltage bus bar voltage be not less than the first preset voltage when, return to step S2 enters iteration.
3. reactive-load compensation distal end according to claim 1 control method for coordinating, which is characterized in that enter in return to step S2
Before iteration, further include：
S6, each taiwan area low-voltage bus bar voltage U under substation bus bar is reacquiredi, and judge each taiwan area low-voltage bus bar voltage UiWhether
It is below the second preset voltage, if so, without carrying out reactive-load compensation, and return to step S2 enters iteration, if it is not, then removing step
The compensating electric capacity put into rapid S5, and selected in addition to the taiwan area of input compensation capacitance in step S5 according to sensitivity matrix
The taiwan area input compensation capacitance that level of sensitivity is first, and return to step S2 enters iteration.
4. reactive-load compensation distal end according to claim 3 control method for coordinating, which is characterized in that the first preset voltage is state
It is the permission upper voltage limit of national regulations to allow lower voltage limit, the second preset voltage as defined in mark.
5. a kind of reactive-load compensation distal end cooperative control device, which is characterized in that including：
First acquisition unit, network structure and line parameter circuit value for obtaining power distribution network under the same busbar of substation's sending end；
Second acquisition unit, the electrical quantity for obtaining each taiwan area low-voltage bus bar under the same busbar of substation's sending end, including：Electricity
Pressure, inlet wire active power, inlet wire reactive power, outlet active power and outlet reactive power；
Computing unit determines each taiwan area low-voltage bus bar voltage U for the network structure and line parameter circuit value according to power distribution networki(i=1,
2 ..., m) to the capacitance C of each taiwan area low-voltage compensation capacitancejThe functional relation of (j=1,2 ..., n), and calculate current time
The capacitance C for the low-voltage compensation capacitance that each taiwan area has been put intoj|T=t0；
Sensitivity matrix Component units, for according to each taiwan area low-voltage bus bar voltage UiTo each taiwan area low-voltage compensation capacitance CjLetter
Number relationship, calculates UiTo CjPartial derivative, and constitute t0Low-voltage compensation capacitance of the moment each taiwan area low-voltage bus bar voltage to each taiwan area
Sensitivity matrix；
First compensating unit, for selecting t0The minimum taiwan area T of voltage in moment each taiwan areal, as taiwan area TlLow-voltage bus bar voltage
When less than the first preset voltage, taiwan area T is judgedlCapacitance whether all finished, if so, according to sensitivity matrix,
Except taiwan area TlIt selects level of sensitivity for first taiwan area input compensation capacitance in taiwan area in addition, and jumps to the second acquisition list
Member enters iteration, if it is not, then throwing taiwan area TlCapacitance, and jump to second acquisition unit and enter iteration.
6. reactive-load compensation distal end according to claim 4 cooperative control device, which is characterized in that further include：
Iteration unit, for working as taiwan area TlLow-voltage bus bar voltage be not less than the first preset voltage when, jump to second acquisition unit
Into iteration.
7. reactive-load compensation distal end according to claim 4 cooperative control device, which is characterized in that further include：
Second compensating unit, for reacquiring each taiwan area low-voltage bus bar voltage U under substation bus bari, and judge each taiwan area low pressure
Busbar voltage UiWhether second preset voltage is below, if so, without carrying out reactive-load compensation, and jump to second acquisition unit
Into iteration, if it is not, the compensating electric capacity of the first compensating unit input is then removed, and according to sensitivity matrix, except the first compensation
Unit is put into other than the taiwan area of capacitance, is selected level of sensitivity for first taiwan area input compensation capacitance, and is jumped to second and obtain
Unit is taken to enter iteration.
8. reactive-load compensation distal end according to claim 7 cooperative control device, which is characterized in that the first preset voltage is state
It is the permission upper voltage limit of national regulations to allow lower voltage limit, the second preset voltage as defined in mark.
9. a kind of reactive-load compensation distal end cooperative control device, which is characterized in that including：
Memory, for storing instruction；
Processor is coupled to the memory, and it is real that the processor is configured as the instruction execution stored based on the memory
Now method according to any one of claims 1 to 4.
10. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has computer to refer to
It enables, method according to any one of claims 1 to 4 is realized when described instruction is executed by processor.
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