CN107732928A - The system and method for reducing line loss - Google Patents
The system and method for reducing line loss Download PDFInfo
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- CN107732928A CN107732928A CN201710973711.0A CN201710973711A CN107732928A CN 107732928 A CN107732928 A CN 107732928A CN 201710973711 A CN201710973711 A CN 201710973711A CN 107732928 A CN107732928 A CN 107732928A
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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
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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
- H02J3/01—Arrangements for reducing harmonics or ripples
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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
- H02J3/1828—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepwise control, the possibility of switching in or out the entire compensating arrangement not being considered as stepwise control
-
- 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
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
-
- 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
-
- 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
- Y02E40/40—Arrangements for reducing harmonics
-
- 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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention provides a kind of system and method for reducing line loss；Wherein, the system includes signal picker, controller and actuator, and three-phase load adjuster；The parameter and annexation of each vigour part in actuator are pre-saved in controller；Controller obtains parameters of electric power by signal picker, calculates the power factor value of current electric grid and calculates the phase load of current electric grid；When power factor value or phase load exceed setting range, according to the parameter and annexation of each vigour part, determine the execution parameter of actuator or three-phase load adjuster, order is performed according to determining that result is sent to corresponding actuator or three-phase load adjuster, to control executing agency to perform corresponding action or control three-phase load adjuster switching phase.The present invention can uniformly adjust a variety of executing agencies or three-phase load adjuster according to the parameters of electric power of current network, improve the intelligence degree for reducing Line Loss of Distribution Network System mode, effectively reduce the line loss per unit of electric power networks.
Description
Technical field
The present invention relates to technical field of electric power, more particularly, to a kind of system and method for reducing line loss.
Background technology
Caused active power loss and energy loss are referred to as line loss, i.e. line in power network transmits assigning process
Damage.Electric energy produces the reason for line loss in transmitting procedure following several respects：First, resistance acts on；Electric energy transmits in power network
In, it is necessary to overcome the resistance of conductor, so as to generate electric energy loss, this loss is indicated in conductor temp.-elevating.Due to this loss
It is as caused by the resistance of conductor, so referred to as resistance loss.Second, magnetic fields, transformer needs to establish and maintains alternation magnetic
, it could boost or be depressured.Motor needs to establish and maintains rotating excitation field, could operate and drive manufacturing machine to do work.Electricity
Stream establishes the process in magnetic field, that is, electromagnetic conversion process in the electrical apparatus.In this course, due to the work of alternating magnetic field
With generating magnetic hysteresis and vortex in the iron core of electrical equipment, iron core is generated heat, so as to generate electric energy loss.Due to this
Loss is caused by during electromagnetic conversion, so referred to as excitation loss.
The existing mode for reducing line loss generally has following several：Improve load power factor improve load power because
Number, it is possible to reduce the reactive power of generator submitting and the reactive power transmitted by circuit, transformer, reduce line loss；Dress
If reactive-load compensation equipment is according to load or burden without work in power network and reactive power distribution situation reasonable selection reactive compensation capacity and determines to compensate
The distribution of capacity, to reduce grid loss；Reasonably configure reactive power compensator and change reactive power flow distribution, reduce active loss
With voltage loss, reduce the reactive power of generator submitting and by circuit, the reactive power of transformer transmission, drop line loss
It is low.However, in aforesaid way, it is not notable to lower the effect of line loss, and is mostly that network operation personnel rule of thumb select to have
, there is larger subjectivity in the mode of the reduction line loss of body, cause effect poor.
In view of existing Line Loss of Distribution Network System rate it is higher the problem of, not yet propose effective solution.
The content of the invention
In view of this, it is an object of the invention to provide a kind of system and method for reducing line loss, to improve reduction distribution
The intelligence degree of net wire loss mode, and then reduce the line loss per unit of electric power networks.
In a first aspect, the embodiments of the invention provide a kind of system for reducing line loss, including to be arranged at distribution transformer defeated
Go out the signal picker, controller and actuator at end, and be arranged at the three-phase load adjuster of electric supply meter case input；Control
Device processed is connected with signal picker, actuator and three-phase load adjuster respectively；Signal picker include current monitoring unit and
Voltage monitoring unit；Actuator includes the first executing agency, the second executing agency and the 3rd executing agency；First executing agency wraps
Include IGCT component and trigger；Second executing agency includes compensating electric capacity unit and execution circuit；3rd executing agency includes
IGCT and storage capacitor；Pre-saved in controller in the first executing agency, the second executing agency and the 3rd executing agency,
The supplemental characteristic and annexation data of each vigour part；Controller is used to obtain electric power on transmission line of electricity by signal picker
Parameter；Wherein, parameters of electric power includes the phase signal of current signal, voltage signal and each branch road；Controller is additionally operable to according to electricity
Flow signal and voltage signal calculates the power factor value of current electric grid, current electric grid is calculated according to current signal and phase signal
Phase load；When power factor value or phase load exceed setting range, according to the supplemental characteristic of each vigour part and connection
Relation data, the execution parameter of actuator or three-phase load adjuster is determined, according to determining result to corresponding actuator or three
Phase load adjuster sends and performs order, to control executing agency to perform corresponding action or the adjuster switching of control three-phase load
Phase.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the first of first aspect, wherein, on
The trigger stated in the first executing agency is connected with controller；Trigger is connected with IGCT component；Trigger is also associated with shaking
Swing device；IGCT component is arranged on transmission line of electricity；Additional electrical is additionally provided with the transmission line of electricity of IGCT component outlet side
Gesture unit；IGCT component includes IGCT and paralleing reactor.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of second of first aspect, wherein, on
The execution circuit stated in the second executing agency includes contactor, voltage transformer summation current transformer；Compensating electric capacity unit includes
Multiple electric capacity in parallel；One end of contactor is connected with transmission line of electricity；The other end of contactor and multiple capacitance connections；Voltage is mutual
Sensor is arranged between transmission line of electricity and contactor；Current transformer is arranged between contactor and electric capacity；Contactor, voltage are mutual
Sensor summation current transformer is connected with controller respectively.
With reference to second of possible embodiment of first aspect, the embodiments of the invention provide the third of first aspect
Possible embodiment, wherein, it is additionally provided with fuse between above-mentioned transmission line of electricity and contactor.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 4th of first aspect kind, wherein, on
State the IGCT in the 3rd executing agency and storage capacitor is connected with each other, be arranged between the zero line of transmission line of electricity and live wire；It is brilliant
Brake tube is connected with live wire；Storage capacitor is connected with zero line.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 5th of first aspect kind, wherein, on
State the input of three-phase load adjuster and the three-phase firewire of transmission line of electricity and zero line connection；The input of three-phase load adjuster
Connect the live wire and zero line of electric supply meter case input.
With reference to the 5th kind of possible embodiment of first aspect, the embodiments of the invention provide the 6th of first aspect kind
Possible embodiment, wherein, above-mentioned three-phase load adjuster is provided with GPRS units, for receiving the execution of controller transmission
Order.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 7th of first aspect kind, wherein, on
Stating system also includes wave filter；Wave filter is arranged between distribution transformer output end and signal picker；Wave filter includes nothing
Source filter and active filter.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 8th of first aspect kind, wherein, on
State the execution parameter that controller is additionally operable to determine actuator or three-phase load adjuster using multi-objective optimization algorithm.
Second aspect, the embodiments of the invention provide a kind of method for reducing line loss, this method is applied to above-mentioned reduction line
The system of damage；This method includes：Controller obtains parameters of electric power on transmission line of electricity by signal picker；Wherein, parameters of electric power
Include the phase signal of current signal, voltage signal and each branch road；The first executing agency has been pre-saved in controller, second has been held
In row mechanism and the 3rd executing agency, the supplemental characteristic and annexation data of each vigour part；Controller is according to current signal
The power factor value of current electric grid is calculated with voltage signal, the phase that current electric grid is calculated according to current signal and phase signal is born
Lotus；When power factor value or phase load exceed setting range, supplemental characteristic and connection of the controller according to each vigour part
Relation data, the execution parameter of actuator or three-phase load adjuster is determined, according to determining result to corresponding actuator or three
Phase load adjuster sends and performs order, to control executing agency to perform corresponding action or the adjuster switching of control three-phase load
Phase.
The embodiment of the present invention brings following beneficial effect：
A kind of system and method for reduction line loss provided in an embodiment of the present invention, including it is arranged at distribution transformer output end
Signal picker, controller and actuator, and be arranged at the three-phase load adjuster of electric supply meter case input；Controller
In pre-saved in the first executing agency, the second executing agency and the 3rd executing agency, the supplemental characteristic of each vigour part and
Annexation data；Controller is used to obtain parameters of electric power on transmission line of electricity by signal picker；When the power of current electric grid
When factor value or phase load exceed setting range, controller can be according to the supplemental characteristic and annexation number of each vigour part
According to the execution parameter of actuator or three-phase load adjuster being determined, according to determining result to corresponding actuator or three-phase load
Adjuster sends and performs order, to control executing agency to perform corresponding action or control three-phase load adjuster switching phase；
In which, controller can uniformly adjust a variety of executing agencies or three-phase load regulation according to the parameters of electric power of current network
Device, the intelligence degree for reducing Line Loss of Distribution Network System mode is improved, effectively reduce the line loss per unit of electric power networks.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and obtained in accompanying drawing.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the system of the first reduction line loss provided in an embodiment of the present invention；
Fig. 2 is the structural representation of the first executing agency in the system of second provided in an embodiment of the present invention reduction line loss
Figure；
Fig. 3 is the structural representation of the second executing agency in the system of second provided in an embodiment of the present invention reduction line loss
Figure；
Fig. 4 is the structural representation of the 3rd executing agency in the system of second provided in an embodiment of the present invention reduction line loss
Figure；
Fig. 5 is in the system of second provided in an embodiment of the present invention reduction line loss, and three-phase load adjuster applies ring
Border schematic diagram；
Fig. 6 is a kind of flow chart of method for reducing line loss provided in an embodiment of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Technical scheme be clearly and completely described, it is clear that described embodiment is part of the embodiment of the present invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
In view of existing Line Loss of Distribution Network System rate it is higher the problem of, the embodiments of the invention provide a kind of line loss that reduces to be
System and method；The technology can apply in power system, among the Controlling line loss of transmission line of electricity, it is particularly possible to applied to distribution
Between transformer and user in the Controlling line loss of transmission line of electricity.
For ease of understanding the present embodiment, the system first to a kind of reduction line loss disclosed in the embodiment of the present invention
Describe in detail.
Embodiment one：
The first shown in Figure 1 reduces the structural representation of the system of line loss；The system includes being arranged at distribution change
Signal picker 10, controller 11 and the actuator 12 of depressor output end, and it is arranged at the three-phase of electric supply meter case input
Load controller 13；Controller 11 is connected with signal picker 10, actuator 12 and three-phase load adjuster 13 respectively；
Above-mentioned signal picker 10 includes current monitoring unit 101 and voltage monitoring unit 102；Above-mentioned actuator 12 includes
First executing agency 121, the second executing agency 122 and the 3rd executing agency 123；First executing agency 121 includes thyristor groups
Part 1211 and trigger 1212；Second executing agency 122 includes compensating electric capacity unit 1221 and execution circuit 1222；3rd performs
Mechanism 123 includes IGCT 1231 and storage capacitor 1232；
The first executing agency 121, the second executing agency 122 and the 3rd executing agency have been pre-saved in controller noted above 11
In 123, the supplemental characteristic and annexation data of each vigour part；Controller 11 is used to obtain transmission of electricity by signal picker 10
Parameters of electric power on circuit；Wherein, the parameters of electric power includes the phase signal of current signal, voltage signal and each branch road；
Controller noted above 11 is additionally operable to calculate the power factor value of current electric grid according to current signal and voltage signal, according to
Current signal and phase signal calculate the phase load of current electric grid；When power factor value or phase load exceed setting range
When, according to the supplemental characteristic and annexation data of each vigour part, determine actuator or three-phase load adjuster performs ginseng
Number, order is performed according to determining that result is sent to corresponding actuator or three-phase load adjuster, to control executing agency to perform
Corresponding action or control three-phase load adjuster switching phase.
In order to reduce the line loss of transmission line of electricity, specifically need to reduce the three-phase of the reactive power and user side on transmission line of electricity
It is load unbalanced；Above-mentioned first executing agency, the second executing agency and the 3rd executing agency can reduce the line of transmission line of electricity
Damage；Above-mentioned three-phase load adjuster can adjust the three-phase load unbalance of user side.
A supplemental characteristic for including each vigour part and connection can be established when actually realizing, in controller noted above
The model of relation data；The parameters of electric power of the transmission line of electricity in the region that current power distribution transformer can be administered by controller
Monitored in real time, when the line loss that monitoring result is shown in transmission line of electricity is too high；The parameters of electric power can be inputted to above-mentioned
In model, controller automatically adjusts the parameter and annexation of each component for accessing to transmission line of electricity, and observes output
Whether simulation parameters of electric power meets setting range, if it is, each member for accessing to transmission line of electricity in "current" model
Parameter and the annexation generation of device perform parameter；If do not met, continue to adjust, set until simulation parameters of electric power meets
Determine scope.
Further, during above-mentioned regulation, if kinds of schemes can meet the simulation parameters of electric power of output
Setting range；Multiple screening conditions can also be pre-set, to obtain preferred scheme；The screening conditions can be the execution of adjustment
Mechanism is minimum, the user scope of influence is minimum etc..
A kind of system of reduction line loss provided in an embodiment of the present invention, including it is arranged at the signal of distribution transformer output end
Collector, controller and actuator, and it is arranged at the three-phase load adjuster of electric supply meter case input；In controller in advance
Preserve in the first executing agency, the second executing agency and the 3rd executing agency, the supplemental characteristic of each vigour part and connection are closed
Coefficient evidence；Controller is used to obtain parameters of electric power on transmission line of electricity by signal picker；When the power factor value of current electric grid
Or phase load is when exceeding setting range, controller can be according to the supplemental characteristic and annexation data of each vigour part, really
The execution parameter of actuator or three-phase load adjuster is determined, according to determining result to corresponding actuator or three-phase load adjuster
Transmission performs order, to control executing agency to perform corresponding action or control three-phase load adjuster switching phase；Which
In, controller can uniformly adjust a variety of executing agencies or three-phase load adjuster according to the parameters of electric power of current network, improve
The intelligence degree of Line Loss of Distribution Network System mode is reduced, effectively reduces the line loss per unit of electric power networks.
Embodiment two：
The embodiments of the invention provide the structural representation of the system of second of reduction line loss；The system is in embodiment one
Realized in the system-based of the reduction line loss of offer.
In the system of second of reduction line loss shown in Figure 2, the structural representation of the first executing agency；This first is held
Trigger 1212 in row mechanism is connected with controller 11；Trigger 1212 is connected with IGCT component 1211；Trigger 1212
It is also associated with oscillator 20；IGCT component 1211 is arranged on transmission line of electricity；In the transmission of electricity of the outlet side of IGCT component 1211
Additional potential unit 21 is additionally provided with circuit；IGCT component 1211 includes IGCT 22 and paralleing reactor 23.
In first executing agency, using converter technique, the frequency in transmission line of electricity is converted by IGCT and paralleing reactor
Rate, the electric current after conversion is inputted into transmission line of electricity again, and then change the power factor in transmission line of electricity.Above-mentioned signal acquisition
Device can gather the parameters of electric power of IGCT component inputs and the parameters of electric power of additional potential unit output end, input to control
In device；When receiving the execute instruction of controller output, startup trigger, so that above-mentioned oscillator is triggered by trigger
The Trigger Angle of IGCT is stated, reduces the electric current in circuit, and then improve power factor.
In the system of second of reduction line loss shown in Figure 3, the structural representation of the second executing agency；This second is held
Execution circuit in row mechanism includes contactor 30, the summation current transformer 32 of voltage transformer 31；Compensating electric capacity unit includes more
Individual electric capacity in parallel, in Fig. 3 by taking three electric capacity as an example, respectively electric capacity 33a, electric capacity 33b and electric capacity 33c；
One end of contactor 30 is connected with transmission line of electricity；The other end of contactor 30 and multiple capacitance connections；Mutual induction of voltage
Device 31 is arranged between transmission line of electricity and contactor 30；Current transformer 32 is arranged between contactor 30 and electric capacity, in Fig. 3 with
Contactor 30 illustrates exemplified by connecting electric capacity 33b；Contactor 30, the summation current transformer 32 of voltage transformer 31 respectively with control
Device connects.Fuse 34 is additionally provided between above-mentioned transmission line of electricity and contactor.
In the make and break process of above-mentioned contactor, above-mentioned voltage transformer is typically used to provide low-tension supply, above-mentioned electric current
Transformer is used to provide protective current, and excessive influence is caused to transmission line of electricity in make and break process to avoid contact with device.This
Two executing agencies can improve power factor under the control of the controller, lower line loss, realize the purpose for improving quality of voltage.
In the system of second of reduction line loss shown in Figure 4, the structural representation of the 3rd executing agency；3rd holds
IGCT and storage capacitor in row mechanism are connected with each other, and are arranged between the zero line of transmission line of electricity and live wire；IGCT and fire
Line connects；Storage capacitor is connected with zero line.
In Fig. 4, illustrated by taking three groups of IGCTs and storage capacitor as an example, respectively IGCT 40 and storage capacitor 41,
IGCT 42 and storage capacitor 43, IGCT 44 and storage capacitor 45.
Controller can send execute instruction to one or more of the 3rd executing agency IGCT, to turn on and off
Brilliant lock；The quantity of storage capacitor in transmission line of electricity is accessed to by adjustment, the reactive power in transmission line of electricity can be compensated, and then
Reduce line loss.
In the system of second of reduction line loss shown in Figure 5, the application environment schematic diagram of three-phase load adjuster；Three
The three-phase firewire (being respectively A phases, B phases and C phases) and zero line of the input of phase load adjuster and transmission line of electricity connect；Three-phase is born
The live wire (L) and zero line (N) of the input connection electric supply meter case input of lotus adjuster.
In Fig. 5, illustrated by taking three three-phase load adjusters as an example, respectively three-phase load adjuster 50, three-phase are born
Lotus adjuster 51 and three-phase load adjuster 52；Three three-phase load adjusters connect electric supply meter case 1, electric supply meter case respectively
2 and electric supply meter case 3.Further, above-mentioned each three-phase load adjuster is provided with GPRS units, for receiving controller hair
The execution order sent.
When above-mentioned three-phase load adjuster receives the execute instruction of controller transmission, electricity can be carried out according to the instruction
The switching of source phase, to reach three-phrase burden balance.
Further, said system also includes wave filter；The wave filter is arranged at distribution transformer output end and signal is adopted
Between storage；The wave filter includes passive filter and active filter.
By setting wave filter on transmission line of electricity, harmful clutter can be eliminated, improve electric power quality, improve power because
Number, reduce line loss.
Further, controller noted above is additionally operable to determine actuator or three-phase load adjuster using multi-objective optimization algorithm
Execution parameter.When actually realizing, multiple object functions can be set, for example, power factor highest, the executing agency of adjustment
It is minimum etc.；The method of exhaustion can be used, obtains globally optimal solution；Optimal reduction line loss is obtained according to the optimal solution performs ginseng
Number, execute instruction is sent to each executing agency or three-phase load adjuster by wired or wireless network, to realize reduction line
Damage.
Embodiment three：
Corresponding to said system embodiment, a kind of flow chart of the method for reduction line loss shown in Figure 6；This method should
For the system of the reduction line loss provided in above-described embodiment；This method comprises the following steps：
Step S602, controller obtain parameters of electric power on transmission line of electricity by signal picker；Wherein, parameters of electric power includes
The phase signal of current signal, voltage signal and each branch road；The first executing agency, the second execution machine have been pre-saved in controller
In structure and the 3rd executing agency, the supplemental characteristic and annexation data of each vigour part；
Step S604, controller calculates the power factor value of current electric grid according to current signal and voltage signal, according to electricity
Flow signal and phase signal calculates the phase load of current electric grid；
Step S606, when power factor value or phase load exceed setting range, controller is according to each vigour part
Supplemental characteristic and annexation data, the execution parameter of actuator or three-phase load adjuster is determined, according to determining result to phase
The actuator or three-phase load adjuster answered send and perform order, to control executing agency to perform corresponding action or control three-phase
Load controller switches phase.
The method provided in an embodiment of the present invention for reducing line loss, the system of the reduction line loss provided with above-described embodiment have
Identical technical characteristic, so can also solve identical technical problem, reach identical technique effect.
The computer program product of the system and method for the reduction line loss that the embodiment of the present invention is provided, including store journey
The computer-readable recording medium of sequence code, the instruction that described program code includes can be used for performing institute in previous methods embodiment
The method stated, specific implementation can be found in embodiment of the method, will not be repeated here.
In addition, in the description of the embodiment of the present invention, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words
The part to be contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are causing a computer equipment (can be
People's computer, server, or network equipment etc.) perform all or part of step of each embodiment methods described of the present invention.
And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
Finally it should be noted that：Embodiment described above, it is only the embodiment of the present invention, to illustrate the present invention
Technical scheme, rather than its limitations, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those within the art that：Any one skilled in the art
The invention discloses technical scope in, it can still modify to the technical scheme described in previous embodiment or can be light
Change is readily conceivable that, or equivalent substitution is carried out to which part technical characteristic；And these modifications, change or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of technical scheme of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of system for reducing line loss, it is characterised in that signal picker, control including being arranged at distribution transformer output end
Device and actuator processed, and it is arranged at the three-phase load adjuster of electric supply meter case input；The controller respectively with it is described
Signal picker, the actuator connect with the three-phase load adjuster；
The signal picker includes current monitoring unit and voltage monitoring unit；The actuator include the first executing agency,
Second executing agency and the 3rd executing agency；First executing agency includes IGCT component and trigger；Described second holds
Row mechanism includes compensating electric capacity unit and execution circuit；3rd executing agency includes IGCT and storage capacitor；
First executing agency, second executing agency and the 3rd executing agency have been pre-saved in the controller
In, the supplemental characteristic and annexation data of each vigour part；The controller is used for defeated by signal picker acquisition
Parameters of electric power in electric line；Wherein, the parameters of electric power includes the phase signal of current signal, voltage signal and each branch road；
The controller is additionally operable to calculate the power factor value of current electric grid, root according to the current signal and the voltage signal
The phase load of current electric grid is calculated according to the current signal and the phase signal；When the power factor value or the phase
When load exceeds setting range, according to the supplemental characteristic and annexation data of each vigour part, actuator or three are determined
The execution parameter of phase load adjuster, performed according to determining that result is sent to corresponding actuator or the three-phase load adjuster
Order, the three-phase load adjuster switching phase is acted or controls accordingly to control the executing agency to perform.
2. system according to claim 1, it is characterised in that trigger and the control in first executing agency
Device connects；The trigger is connected with the IGCT component；The trigger is also associated with oscillator；
The IGCT component is arranged on the transmission line of electricity；Also set on the transmission line of electricity of the IGCT component outlet side
It is equipped with additional potential unit；The IGCT component includes IGCT and paralleing reactor.
3. system according to claim 1, it is characterised in that the execution circuit in second executing agency includes
Contactor, voltage transformer summation current transformer；The compensating electric capacity unit includes multiple electric capacity in parallel；
One end of the contactor is connected with the transmission line of electricity；The other end of the contactor and multiple capacitance connections；
The voltage transformer is arranged between the transmission line of electricity and the contactor；The current transformer is arranged at the contact
Between device and the electric capacity；The contactor, the voltage transformer and the current transformer connect with the controller respectively
Connect.
4. system according to claim 3, it is characterised in that be additionally provided between the transmission line of electricity and the contactor
Fuse.
5. system according to claim 1, it is characterised in that IGCT and storage capacitor in the 3rd executing agency
It is connected with each other, is arranged between the zero line and live wire of the transmission line of electricity；
The IGCT is connected with the live wire；The storage capacitor is connected with the zero line.
6. system according to claim 1, it is characterised in that the input of the three-phase load adjuster and the transmission of electricity
The three-phase firewire of circuit connects with zero line；The input of the three-phase load adjuster connects the electric supply meter case input
Live wire and zero line.
7. system according to claim 6, it is characterised in that the three-phase load adjuster is provided with GPRS units, uses
In the execution order for receiving the controller transmission.
8. system according to claim 1, it is characterised in that the system also includes wave filter；The wave filter is set
Between the distribution transformer output end and the signal picker；The wave filter includes passive filter and active power filtering
Device.
9. system according to claim 1, it is characterised in that the controller is additionally operable to true using multi-objective optimization algorithm
Determine the execution parameter of actuator or three-phase load adjuster.
A kind of 10. method for reducing line loss, it is characterised in that methods described is applied to described in claim 1-9 any one
The system for reducing line loss；Methods described includes：
Controller obtains parameters of electric power on transmission line of electricity by signal picker；Wherein, the parameters of electric power include current signal,
The phase signal of voltage signal and each branch road；Pre-saved in the controller the first executing agency, the second executing agency and
In 3rd executing agency, the supplemental characteristic and annexation data of each vigour part；
The controller calculates the power factor value of current electric grid according to the current signal and the voltage signal, according to described
Current signal and the phase signal calculate the phase load of current electric grid；
When the power factor value or the phase load exceed setting range, the controller is according to each vigour part
Supplemental characteristic and annexation data, determine the execution parameter of actuator or three-phase load adjuster, according to determine result to
Corresponding actuator or the three-phase load adjuster, which is sent, performs order, to control the executing agency to perform corresponding action
Or the control three-phase load adjuster switching phase.
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| CN201710973711.0A CN107732928A (en) | 2017-10-18 | 2017-10-18 | The system and method for reducing line loss |
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| CN201710973711.0A CN107732928A (en) | 2017-10-18 | 2017-10-18 | The system and method for reducing line loss |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111293692A (en) * | 2020-03-23 | 2020-06-16 | 贵州电网有限责任公司 | Optimization method for reducing line loss of power distribution network |
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| CN102005764A (en) * | 2010-11-15 | 2011-04-06 | 蚌埠市双利电器有限责任公司 | Power factor compensation device |
| CN102142686A (en) * | 2011-01-21 | 2011-08-03 | 福建阳谷智能技术有限公司 | Branch-line voltage regulation device with controller taking voltage as criterion and combination switch |
| CN201994681U (en) * | 2011-04-14 | 2011-09-28 | 襄樊卓达尔工业控制有限公司 | High-voltage still reactive dynamic compensating device |
| CN102394501A (en) * | 2011-03-18 | 2012-03-28 | 北京潞能麒麟电力设备有限公司 | Energy-saving method and device based on power grid load dynamic balance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102005764A (en) * | 2010-11-15 | 2011-04-06 | 蚌埠市双利电器有限责任公司 | Power factor compensation device |
| CN102142686A (en) * | 2011-01-21 | 2011-08-03 | 福建阳谷智能技术有限公司 | Branch-line voltage regulation device with controller taking voltage as criterion and combination switch |
| CN102394501A (en) * | 2011-03-18 | 2012-03-28 | 北京潞能麒麟电力设备有限公司 | Energy-saving method and device based on power grid load dynamic balance |
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| CN111293692A (en) * | 2020-03-23 | 2020-06-16 | 贵州电网有限责任公司 | Optimization method for reducing line loss of power distribution network |
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