CN106505556A - The method that city low and medium voltage distribution network drop is damaged - Google Patents
The method that city low and medium voltage distribution network drop is damaged Download PDFInfo
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- CN106505556A CN106505556A CN201610982836.5A CN201610982836A CN106505556A CN 106505556 A CN106505556 A CN 106505556A CN 201610982836 A CN201610982836 A CN 201610982836A CN 106505556 A CN106505556 A CN 106505556A
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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- 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
- H02J3/003—Load forecast, e.g. methods or systems for forecasting future load demand
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention belongs to power grid construction field, is related to low and medium voltage distribution network drop and damages, more particularly to the method that a kind of city low and medium voltage distribution network drop is damaged.Including following effective procedure：All kinds of fundamental plan information investigating first, analyze, verifying in the city, the fundamental plan information include load prediction data, substation information；Conductor cross-section and transformer according to the information timely adjustment that is investigated with circuit, the conductor cross-section with circuit is with main line in 80mm2, branch line is in 55mm2It is standard above, the transformer is run in parallel using at least more than two；According to load prediction data, judge whether the situation of three-phase load unbalance and need to take the drop of balance three-phase load to damage mode；If desired, using genetic algorithm to reactive-load compensation using being optimized configuration, you can reach the purpose that city low and medium voltage distribution network drop is damaged.
Description
Technical field
The invention belongs to power grid construction field, is related to low and medium voltage distribution network drop and damages, more particularly to a kind of city mesolow is matched somebody with somebody
The method that electrical network drop is damaged.
Background technology
Line loss is loss of the electric energy in the links such as power network conveying, transformation, distribution, is that electric energy is passed in power network
Give, in assigning process objective reality physical phenomenon.With environmental pressure, energy shortage, the intelligent grid of low-carbon high-efficiency is built
The direction of 21 century power network development is become.Main industries of the power industry as AND ENERGY RESOURCES CONSUMPTION IN CHINA, in electric energy transmitting procedure
It is to hinder one of major reason of its low-carbon (LC) construction that the mass energy of generation is wasted.
The major measure of current power distribution network loss reducing technology be using network reconfiguration and reactive power compensation ability distribution network operation, with
And reduce the loss of transformer by the economical operation of transformer.Wherein, Distribution Networks Reconfiguration is also known as distribution network configuration, or
Distribution network feeder line configuration, the reconstruct of distribution network feeder line.Distribution Networks Reconfiguration is by changing block switch, interconnection switch
Assembled state, that is, select the supply path of user, reduces network loss, eliminates overload, balanced load, the mesh for improving the quality of power supply
's.And reactive power compensation Reactive power compensation, abbreviation reactive-load compensation, rise in power supply system
The effect of the power factor of power distribution network is improved, reduces the loss of supply transformer and conveying circuit, improve power supplying efficiency, improved and supply
Electrical environment.And transformer economic operation is referred to when several parallel operation of transformers, as each Transformers Iron Loss is basically unchanged,
And copper loss changes with the change of load, therefore need number of units and the capacity that operating transformer is adjusted by load, make transformation
The power total losses of device are minimum, and this method of operation, referred to as Economic Operation Mode of Transformers are general by adjusting transformer
Combination is realizing.
Although these drop damage methods reach the purpose that drop is damaged to a certain extent, in the power distribution network of the mesolow in city
In construction, its effect is not very well, damages effect to reach best drop, should be by various drop damage method synthesis in power distribution network
Consideration so that various drop damage methods can complement each other.
Content of the invention
The present invention damages existing technical problem for drop in the low and medium voltage distribution network in above-mentioned city, proposes a kind of design
The city low and medium voltage distribution network of damage that is rationally, convenient and simple, easy to operate and can effectively reducing city low and medium voltage distribution network
The method that drop is damaged.
In order to achieve the above object, the technical solution used in the present invention is, the present invention provides a kind of city mesolow distribution
The method that net drop is damaged, including following effective procedure：
A, all kinds of fundamental plan information investigating first, analyze, verifying in the city, the fundamental plan information include bearing
Lotus prediction data, substation information；
B, conductor cross-section and transformer according to the information timely adjustment that is investigated with circuit, the wire with circuit cut
Face is with main line in 80mm2, branch line is in 55mm2It is standard above, the transformer adopts at least more than two with sides in parallel
Formula is run；
C, according to load prediction data, judge whether the situation of three-phase load unbalance and need to take balance three-phase
The drop of load damages mode；
D, if desired, using genetic algorithm to reactive-load compensation using being optimized configuration, you can reach city mesolow and match somebody with somebody
The purpose that electrical network drop is damaged.
Preferably, in the b step, the selection of number transformer is based on formula：
Selected, wherein, SjFor transformer economic load operationally, SnFor the rated capacity of a transformer, Δ
PoFor open circuit loss, Δ PkFor short circuit loss, n is number transformer, i.e., when when actual load S is less than economic load SjWhen, input
The loss of n-1 platforms transformer station high-voltage side bus is minimum；When actual load is more than economic load SjWhen, put into n platform transformers connected in parallel running losses
Minimum, the n 2.
Preferably, described include following effective procedure to reactive-load compensation using configuration is optimized using genetic algorithm：
a1, collection power distribution network first initial data, equality constraint and inequality constraints；
b1, initial Load flow calculation is carried out to the data for being gathered, then carry out sensitivity analysis；
c1, according to sensitivity analysis result, determine the infield of reactive-load compensation capacitor, and select the section of reactive-load compensation
Point；
d1, the group number of reactive-load compensation capacitor is encoded by the way of integer coding, according to formula
Qci=Qstep*mi
Initial population is randomly generated, in formula, QciFor the capacity of the compensating electric capacity of i-node, i is corresponding reactive-load compensation section
Point, miIt is the switching group number of capacitor；QstepIt is electric capacity input step-length, the i.e. capacity of single group capacitor；
e1, according to d1 steps generate initial population corrective networks parameter, calculate distribution respectively according to different load level
Net trend；
f1, pass through formula minC=Cc-CS+FpEach individual adaptation degree is calculated, and is sorted, in formula, CcFor reactive power compensator
Total investment expenses, CSThe expense that saves for reactive power compensator trial employment period distribution network loss reduces, FpReactive power compensator
Mounting cost；
g1, using roulette selection mode will be sorted in step f1 after the maximum individuality of fitness value enter as filial generation
Row cross and variation is operated, then the fitness value after calculating cross and variation the next day filial generation enters and is ranked up, then heavy by value is suitable for
In intron generation, replaces parent, and returning result population in population with filial generation；
h1, network parameter remodified according to the population that newly produces, and carry out Load flow calculation；
i1, the condition of convergence judged；Be optimal individual stop iteration, export optimal solution when retaining algebraically, though or
So it is not reaching to optimum individual and retains algebraically, but reach maximum genetic iteration number of times, also stop iteration, exports suboptimal solution, no
Then repeat f1～h1Step, continues iteration.
Compared with prior art, advantages of the present invention and good effect are,
1st, line loss of the present invention by way of changing transformer, supply line and increasing reactive-load compensation, to power distribution network
Comprehensive reduction is carried out, tradition drop is effectively solved and is damaged existing technical problem, meanwhile, method drop provided by the present invention
Damage effect good and with low cost, be suitable for large-scale promotion and use.
Specific embodiment
In order to be more clearly understood that the above objects, features and advantages of the present invention, with reference to embodiment to this
Bright it is described further.It should be noted that in the case where not conflicting, the feature in embodiments herein and embodiment can
To be mutually combined.
A lot of details are elaborated in the following description in order to fully understand the present invention, but, the present invention may be used also
To be implemented using other modes described here are different from, therefore, the present invention is not limited to the concrete of specification described below
The restriction of embodiment.
Embodiment 1, the present embodiment are comprehensively described city mesolow by taking the distribution network of Shandong Province Donga County county town as an example
The method that power distribution network drop is damaged, specifically by taking the cell of Donga County as an example, the present embodiment mainly carries out drop damage in terms of 3, and one is
The quantity and connected mode of adjustment transformer is changed, two is to change mesolow line, and three is reactive-load compensation, in the present embodiment, idle
The algorithm of compensation mainly uses genetic algorithm, and genetic algorithm will be that parameter to be optimized forms coded strings, according to certain adaptation
Degree function (relevant with object function) and a series of genetic operators (selection opertor, crossover operator and mutation operator) are operated to each
Individuality is screened, and the individuality for making fitness high remains the new colony of composition, and new colony includes a large amount of letters of previous generation
Breath and the new individuality better than previous generation is introduced, circulate operation like this, in colony, each individual fitness function is not
Disconnected raising is until arrive at optimum solution point.
The cell total line length provided in this enforcement is 5.832km, 8, total transformer, and joint current length is
2.615km, processes length of cable 2.12, and overall cable is changed by main line length 2.65 first, the main line line after replacing
The conductor cross-section of cable is 85mm2, branch line for 60mm2, then basisTo the change in cell
Depressor quantity is adjusted, adjustment quantity after be 14 transformers, as electricity consumption has Gu Feng, therefore, in Gu Fengshi, be 14 with
When work, peacetime state is operated for 8, when voltage device is configured, should be by original medium-voltage line extension, by medium-voltage line
Former low-voltage circuit terminal is extended to, and corresponding small capacity transformer is configured on feeder line.
With in August, 2015 as the typical moon, trend general status is recorded
1 Donga County cell of the table trend general status of in August, 2015
According to trend distribution situation, we can know, need to carry out reactive-load compensation, therefore, gather power distribution network first
Initial data, equality constraint and inequality constraints, including circuitry number b, nodes n, load bus number and branch parameters
(resistance Ri, reactance Xi), node load parameter (active PdiIdle Qdi)；Genetic Algorithms parameter and variable (population scale, dyeing
Body length, initial crossing-over rate, aberration rate, genetic algebra etc.)；
By collection, acquired results are as follows：
Table 2：Cell line parameter circuit value
Table 3：Cell matches somebody with somebody electrical quantity
| Numbering | Model | Capacity | Open circuit loss | Load loss | No-load current | Impedance voltage | Both high side node 22 | Low side node |
| 1 | S11 | 80 | 0.175 | 1.25 | 2.4 | 4 | 6 | 40 |
| 2 | S9 | 80 | 0.25 | 1.25 | 1.8 | 4 | 6 | 41 |
| 3 | S11 | 80 | 0.175 | 1.25 | 2.4 | 4 | 7 | 42 |
| 4 | S11 | 250 | 0.39 | 3.05 | 2 | 4 | 7 | 43 |
| 5 | S9 | 80 | 0.25 | 1.25 | 1.8 | 4 | 7 | 44 |
| 6 | S11 | 250 | 0.39 | 3.05 | 2 | 4 | 8 | 45 |
| 7 | S9 | 80 | 0.25 | 1.25 | 1.8 | 4 | 10 | 46 |
| 8 | S9 | 250 | 0.56 | 3.05 | 1.2 | 4 | 10 | 47 |
| 9 | S9 | 200 | 0.48 | 2.6 | 1.4 | 4 | 11 | 48 |
| 10 | S11 | 630 | 0.84 | 6.2 | 0.9 | 4.5 | 12 | 49 |
| 11 | S9 | 250 | 0.56 | 3.05 | 1.2 | 4 | 16 | 50 |
| 12 | S11 | 50 | 0.17 | 0.87 | 2 | 4 | 16 | 51 |
| 13 | S11 | 315 | 0.67 | 3.65 | 1.1 | 4 | 18 | 52 |
| 14 | S11 | 315 | 0.47 | 3.65 | 2 | 4 | 19 | 53 |
Then, initial Load flow calculation is carried out according to the data to being gathered, then carry out sensitivity analysis；Trend computing is selected
With formula it is：
The formula that node flows through is：
The power attenuation of circuit is：
Above various constitute before push back the basic skills in generation.By iterative calculation, the electricity of each node of system can be obtained
Pressure, the active loss of electric current, active power, reactive power and branch road that circuit flows through, reactive loss,
V in formulaiRepresent node voltage；Ri、XiRepresent the impedance of circuit i points；Pi、QiRepresent the power that node flows through；PLi、
QLiRepresent the injecting power of node；LPi、LQiRepresent the power attenuation of circuit i.
Visible through Load flow calculation, the cell is concentrated mainly on feeder line head end to the switchyard of node 9, backbone leading portion
Supply current is larger, and waste is also larger, especially circuit 4, as its line length is too big, the active and reactive loss that causes
All larger.
Then, the sensitivity analysis of reactive-load compensation is carried out, the amount that the idle change of each node is affected on system losses is obtained
Value, in the present embodiment, sensitivity analysis is using calculating sensitivity coefficientTo be analyzed, first, calculate and be
The active power loss of system is：
Then, obtaining the idle change of egress to the sensitivity of system losses is：
In formula, QL, V, θ are respectively distribution node and inject idle, node voltage amplitude and phase angle.Through deriving, finally may be used
?：
For i-th node in system, then have：
In various above, each element in sensitivity matrix SPQL can by Newton-Raphson approach Load flow calculation in refined can
Obtain than Matrix Calculating.
Through calculating analysis, show that all sensitivity coefficients are all negative value, representing that the idle increase of node injection causes is
The reduction of system network loss, this is consistent with theory analysis；Secondly, the higher Node distribution of sensitivity coefficient is in dividing in the middle of circuit
Branch line, and in the majority with low side node.When reactive-load compensation is carried out based on the compensation of consideration low-pressure side.
Selection network node 1 is balance nodes, and remaining node is optimized calculating for PQ nodes.Side using integer coding
Formula is encoded to the group number of reactive-load compensation capacitor, according to formula
Qci=Qstep*mi
Initial population is randomly generated, in formula, capacity of the Qci for the compensating electric capacity of i-node, i are corresponding reactive-load compensation section
Point, mi are the switching group numbers of capacitor；Qstep is that electric capacity puts into step-length, the i.e. capacity of single group capacitor, the initial population of generation
Corrective networks parameter, calculates distribution power flow respectively according to different load level；
By formula minC=Cc-CS+Fp
Each individual adaptation degree is calculated, and is sorted, in formula, total investment expenses of the Cc for reactive power compensator, CSFor idle benefit
Repay the expense that device trial employment period distribution network loss reduces and saves, FpReactive power compensator mounting cost；Selected using roulette
Selecting mode carries out cross and variation operation using after the sequence maximum individuality of fitness value as filial generation, then calculates son after cross and variation
For the next day fitness value enter and be ranked up, then by be suitable for value weight intron generation in population, replace parent with filial generation, and
Returning result population；Population according to newly producing remodifies network parameter, and carries out Load flow calculation, and the condition of convergence is sentenced
Disconnected；When being optimal individual reservation algebraically, stop iteration, export optimal solution, although or retain generation optimum individual is being not reaching to
Number, but maximum genetic iteration number of times is reached, also stop iteration, export suboptimal solution, otherwise continue iteration.
Run time all arrive compared with the run time under large load operation mode by conversion, in order to calculate Spring Festival holidays electricity charge use.Kind
Group number NIND=100；Genetic algebra MAXGEN=100；Filial generation selection rate GGAP=0.9；Crossing-over rate XOVR=0.7；Aberration rate
Pm=1/10.
Table 4：Efficiency Comparison before and after idle work optimization comprehensive reformation
| Item compared | Before transformation | After transformation |
| Always power active/kW | 3245 | 3235 |
| Always power idle/kVar | 1984.3 | 1588.4 |
| Total active loss/kW | 62.566 | 52.203 |
| Total idle work(loss/kW | 122.198 | 92.552 |
| Busbar voltage/kV | 10.5 | 10.5 |
| 0kV circuit minimum voltages (p.u.) | 10.37 | 10.40 |
| Year network loss takes/ten thousand yuan | 23.32 | 20.17 |
| Newly-increased capacity/kVar | 600 | |
| Newly-increased reactive-load compensation invests/ten thousand yuan | 10.32 | |
| Economic validity period (10 years) net present value (NPV)/ten thousand yuan | 15.23 | |
| Investment payback time/year | 3.18 | |
| Total active loss/the kW of 10kV circuits | 15.576 | 12.724 |
| Total copper loss/the kW of distribution transforming | 27.085 | 19.574 |
| Total iron loss/the kW of distribution transforming | 19.905 | 19.905 |
| Power factor | 0.85 | 0.90 |
| 10kV system networks loss rate/% | 1.96 | 1.61 |
As shown in Table 4, after transformer increase, cable are changed and implement reactive-load compensation, significantly fortune will be achieved
Row and economic effect, in the case of maximum load.The total active loss of distribution reduces about 16.6%, and power factor is also improved.
After compensation, the voltage of mid ＆ low-voltage line is improved significantly.
In the present embodiment, the algorithm for being used is existing common algorithm, and the present invention focuses on offer one kind
The formula of calculating so as to reach most preferably, because concrete calculating process, not in an embodiment, is described in detail.
The above, is only presently preferred embodiments of the present invention, is not the restriction for making other forms to the present invention, appoints
What those skilled in the art changed possibly also with the technology contents of the disclosure above or be modified as equivalent variations etc.
Effect embodiment is applied to other fields, but every without departing from technical solution of the present invention content, according to the technical spirit of the present invention
Any simple modification, equivalent variations and the remodeling made by above example, still falls within the protection domain of technical solution of the present invention.
Claims (3)
1. a kind of method that city low and medium voltage distribution network drop is damaged, it is characterised in that including following effective procedure：
A, all kinds of fundamental plan information investigating first, analyze, verifying in the city, the fundamental plan information include that load is pre-
Survey data, substation information；
B, according to the information timely adjustment that is investigated with circuit conductor cross-section and transformer, the conductor cross-section with circuit with
Main line is in 80mm2, branch line is in 55mm2It is standard above, the transformer is entered in parallel using at least more than two
Row operation；
C, according to load prediction data, judge whether the situation of three-phase load unbalance and need to take balance three-phase load
Drop damage mode；
D, if desired, using genetic algorithm to reactive-load compensation using being optimized configuration, you can reach city low and medium voltage distribution network
The purpose that drop is damaged.
2. the method that low and medium voltage distribution network drop in city according to claim 1 is damaged, it is characterised in that in the b step, become
The selection of depressor quantity is based on formula：
Selected, wherein, SjFor transformer economic load operationally, SnFor the rated capacity of a transformer, Δ PoFor
Open circuit loss, Δ PkFor short circuit loss, n is number transformer, i.e., when when actual load S is less than economic load SjWhen, put into n-1
The loss of platform transformer station high-voltage side bus is minimum；When actual load is more than economic load SjWhen, input n platform transformers connected in parallel running losses are most
Low, the n 2.
3. the method that low and medium voltage distribution network drop in city according to claim 1 is damaged, it is characterised in that described using heredity calculation
Method includes following effective procedure to reactive-load compensation using configuration is optimized：
a1, collection power distribution network first initial data, equality constraint and inequality constraints；
b1, initial Load flow calculation is carried out to the data for being gathered, then carry out sensitivity analysis；
c1, according to sensitivity analysis result, determine the infield of reactive-load compensation capacitor, and select the node of reactive-load compensation；
d1, the group number of reactive-load compensation capacitor is encoded by the way of integer coding, according to formula Qci=Qstep*mi
Initial population is randomly generated, in formula, QciFor the capacity of the compensating electric capacity of i-node, i is corresponding candidate compensation buses, mi
It is the switching group number of capacitor；QstepIt is electric capacity input step-length, the i.e. capacity of single group capacitor；
e1, according to d1 steps generate initial population corrective networks parameter, according to different load level calculate respectively power distribution network tide
Stream；
f1, pass through formula minC=Cc-CS+FpEach individual adaptation degree is calculated, and is sorted, in formula, CcFor the total of reactive power compensator
Investment cost, CSThe expense that saves for reactive power compensator trial employment period distribution network loss reduces, FpReactive power compensator is installed
Expense；
g1, using roulette selection mode will be sorted in step f1 after the maximum individuality of fitness value handed over as filial generation
Mutation operation is pitched, then the fitness value after calculating cross and variation the next day filial generation enters and is ranked up, and is then inserted by applicable value again
Filial generation replaces parent, and returning result population in population with filial generation；
h1, network parameter remodified according to the population that newly produces, and carry out Load flow calculation；
i1, the condition of convergence judged；When being optimal individual reservation algebraically, stop iteration, export optimal solution, although or do not having
Individual reservation algebraically is optimal, but reaches maximum genetic iteration number of times, also stopped iteration, export suboptimal solution, otherwise weigh
Multiple f1～h1Step, continues iteration.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113178873A (en) * | 2021-05-18 | 2021-07-27 | 北京交通大学 | Power supply network load dynamic transfer method combined with flexible switch |
| CN115296294A (en) * | 2022-08-03 | 2022-11-04 | 国网四川省电力公司电力科学研究院 | Reconstruction loss reduction method, device, equipment and storage medium for high-voltage distribution network |
| CN117932276A (en) * | 2024-03-21 | 2024-04-26 | 国网山东省电力公司菏泽供电公司 | Energy-saving loss-reducing adaptability evaluation method for medium-voltage distribution network line |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377689A (en) * | 2014-11-03 | 2015-02-25 | 海南电网有限责任公司 | Loss reduction method and device for power distribution network |
-
2016
- 2016-11-09 CN CN201610982836.5A patent/CN106505556A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377689A (en) * | 2014-11-03 | 2015-02-25 | 海南电网有限责任公司 | Loss reduction method and device for power distribution network |
Non-Patent Citations (3)
| Title |
|---|
| 冯超: "《配电网无功补偿容量优化配置》", 《CNKI优秀硕士学位论文全文库》 * |
| 杨文锋等: "《城市中低压配单网降损规划决策方法》", 《电网技术》 * |
| 郭长利等: "《变压器的并列运行方式的经济运行》", 《科技与经济》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113178873A (en) * | 2021-05-18 | 2021-07-27 | 北京交通大学 | Power supply network load dynamic transfer method combined with flexible switch |
| CN115296294A (en) * | 2022-08-03 | 2022-11-04 | 国网四川省电力公司电力科学研究院 | Reconstruction loss reduction method, device, equipment and storage medium for high-voltage distribution network |
| CN117932276A (en) * | 2024-03-21 | 2024-04-26 | 国网山东省电力公司菏泽供电公司 | Energy-saving loss-reducing adaptability evaluation method for medium-voltage distribution network line |
| CN117932276B (en) * | 2024-03-21 | 2024-05-31 | 国网山东省电力公司菏泽供电公司 | Energy-saving loss-reducing adaptability evaluation method for medium-voltage distribution network line |
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Application publication date: 20170315 |