CN105207201B - A kind of power distribution network feeder line optimizing fractional method that maximum power supply reliability is distributed based on uniform load - Google Patents
A kind of power distribution network feeder line optimizing fractional method that maximum power supply reliability is distributed based on uniform load Download PDFInfo
- Publication number
- CN105207201B CN105207201B CN201510585609.4A CN201510585609A CN105207201B CN 105207201 B CN105207201 B CN 105207201B CN 201510585609 A CN201510585609 A CN 201510585609A CN 105207201 B CN105207201 B CN 105207201B
- Authority
- CN
- China
- Prior art keywords
- load
- reliability
- mrow
- distribution network
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention relates to a kind of power distribution network feeder line optimizing fractional method that maximum power supply reliability is distributed based on uniform load, belong to intelligent distribution network protection and control technology field.Power distribution network equitable subsection can improve efficiency of the power distribution automation in practical implementation, improve power supply reliability.The non-uniform problem of power distribution network feeder line generally existing power load distributing, Practical Project are not calculated usually and are directly segmented when constructing, and cause effect and contemplate that larger gap that actual segment reaches.The present invention is for the non-uniform problem of live power load distributing, based on power supply reliability, according to peak load, obtain maximum segment number, when calculating from two-section to maximum segment number, the reliability in the case of the optimal segmentation of each segments, is contrasted by the reliability curve with power load distributing when uniform, realize the optimal segmentation under optimizing fractional and each segmented mode, finally determine segments and waypoint according to actual conditions such as engineering costs.
Description
Technical field
The present invention is a kind of power distribution network feeder line optimizing fractional side that maximum power supply reliability is distributed based on uniform load
Method, belongs to intelligent distribution network protection and control technology field.
Technical background
Distribution system is to belong to electric system end, is the link being directly connected with user facility.Once distribution system is sent out
Raw failure is overhauled, tested, and be will result in interruption of the system to customer power supply, is influenced power supply reliability.As society passes through
The development of Ji, the raising of living standards of the people and the extensive use of electric appliance, requirement of the user to power system power supply reliability
Higher and higher, an important component of the distribution Power System Reliability as Power System Reliability, increasingly causes people's
Pay attention to.
Feeder automation improves the effect of power supply reliability and the block switch installed on feeder line in power distribution automation
Quantity has substantial connection.Power distribution network switching optimization is by cost at present --- based on performance analysis principle, it is related to switch
The many factors such as investment, operation and maintenance cost and the loss of outage of equipment.Power distribution automation exists in practical implementation
The problem of equitable subsection, the non-uniform problem of power distribution network feeder line physical presence power load distributing, when engineering construction, are usually not added with
Directly it is segmented with calculating.Feeder line gradation study based on power supply reliability is less, and distribution planning, rectification need to consider to carry
Power distribution network block switch for the purpose of high power supply reliability is distributed rationally.
The content of the invention
The object of the present invention is to provide a kind of power distribution network feeder line that maximum power supply reliability is distributed based on uniform load
Optimizing fractional method, to solve the above problems.
The technical scheme is that：A kind of power distribution network feeder line that maximum power supply reliability is distributed based on uniform load
Optimizing fractional method, when power load distributing is uneven, according to peak load, obtains maximum segment number, calculates from two-section to most
During big segments, the reliability in the case of the optimal segmentation of each segments, does with reliability curve of power load distributing when uniform
Take absolute value after difference, according to the order of reliability difference from low to high, arrange segments, it is finally actual according to engineering cost etc.
Situation determines segments.
Comprise the concrete steps that：
The first step, using intelligent distribution network central database, transfer each branch load p (i) of circuit and branch number i.For
Same bar, multiple branches with tower, are attributed to a branch on basic routing line.
Second step, the branch a for asking for total load P, maximum branch load M and its place.
3rd step, determine maximum segment number n according to maximum branch load, and when n is not integer, round numbers backward, is denoted as
c。
Wherein
4th step, be segmented since n=2, determines n=c successively.When having a variety of segmented modes under some segments,
The situation of di minimums is taken, records segmentation method.Wherein
Work as Pi＞ Pi+1When,
Work as Pi＜ Pi+1When,
5th step, draw reliability curve, and is contrasted.Load uneven distribution and load are uniformly distributed two kinds of feelings
The reliability curve being segmented under condition is plotted in the same window, makees difference and the Di that takes absolute value at each waypoint
Di=load is uniformly distributed-uneven distribution (5)
Sort according to order ascending Di, you can a sequence of optimal segmentation number is obtained, according still further to engineering cost, peace
The most excellent actual conditions of holding position determine most equitable subsection number.
The beneficial effects of the invention are as follows：With economic development, the requirement to power supply reliability is higher and higher, while actual work
Distribution network line power load distributing is non-uniform in journey.In view of the above-mentioned problems, the load uneven distribution based on reliability is matched somebody with somebody
Net feeder line, which carries out segmentation, has actual application value, easy to distribution network planning and rectification.
Brief description of the drawings
Fig. 1 is typical " handing in hand " looped network electric line model of power distribution network；
Fig. 2 is to be segmented in embodiment on B busbares, and when breaking down in the maximum hair section of load, different segments are corresponding
Comparison diagram when reliability curve is uniformly distributed with load.
Embodiment
Below in conjunction with drawings and examples, the present invention is further elaborated.
A kind of power distribution network feeder line optimizing fractional method that maximum power supply reliability is distributed based on uniform load, works as load
During skewness, according to peak load, maximum segment number is obtained, when calculating from two-section to maximum segment number, each segmentation
Reliability in the case of several optimal segmentations, takes absolute value after doing difference with reliability curve of power load distributing when uniform, according to
The order of reliability difference from low to high, arranges segments, finally determines segments according to actual conditions such as engineering costs.
Comprise the concrete steps that：
The first step, using intelligent distribution network central database, transfer each branch load p (i) of circuit and branch number i.For
Same bar, multiple branches with tower, are attributed to a branch on basic routing line.
Second step, the branch a for asking for total load P, maximum branch load M and its place.
3rd step, determine maximum segment number n according to maximum branch load, and when n is not integer, round numbers backward, is denoted as
c。
Wherein
4th step, be segmented since n=2, determines n=c successively.When having a variety of segmented modes under some segments,
The situation of di minimums is taken, records segmentation method.Wherein
Work as Pi＞ Pi+1When,
Work as Pi＜ Pi+1When,
5th step, draw reliability curve, and is contrasted.Load uneven distribution and load are uniformly distributed two kinds of feelings
The reliability curve being segmented under condition is plotted in the same window, makees difference and the Di that takes absolute value at each waypoint
Di=load is uniformly distributed-uneven distribution (5)
Sort according to order ascending Di, you can a sequence of optimal segmentation number is obtained, according still further to engineering cost, peace
The most excellent actual conditions of holding position determine most equitable subsection number.
Embodiment 1：
Typical " handing in hand " the looped network electric line model of power distribution network is as shown in Figure 1, two sections of busbares of A, B are opened by normally opened contact
Close and be connected, when one section of busbar breaks down, interconnection switch energy automatic closing, which is realized, turns power supply.Fault rate is highestly
Side is maximum branch.
1st, B busbar Shang Ge branch load p (i) and branch number i are transferred using intelligent distribution network central database, and according to
Formula (1) in specification calculates total load.
2nd, the formula in specification (2) obtains maximum segment number c.
C=5
3rd, it is segmented since n=2, determines n=c successively.When having a variety of segmented modes under some segments, according to public affairs
Formula (3) (4), takes the situation of di minimums, records segmentation method.
During two-section, waypoint is after the 9th article of branch；
During three segmentations, waypoint is after the 8th, 15 article of branch；
During four segmentations, waypoint is after the 7th, 8,13 article of branch；
During five segmentations, waypoint is after the 7th, 8,11,18 article of branch.
4th, reliability curve is drawn, and is contrasted.Load uneven distribution and load are uniformly distributed in the case of two kinds
The reliability curve being segmented is plotted in the same window, makees difference Di at each waypoint
Di=load is uniformly distributed-uneven distribution (5)
Sort according to order ascending Di, you can a sequence of optimal segmentation number is obtained, according still further to engineering cost, peace
The most excellent actual conditions of holding position determine most equitable subsection number.
Optimal segmentation is ordered as 5,2,3,4 it can be seen from Fig. 2 and table.
| Segments | 2 | 3 | 4 | 5 |
| Di | 0.0843 | 0.0859 | 0.1012 | 0.0224 |
Claims (1)
1. a kind of power distribution network feeder line optimizing fractional method that maximum power supply reliability is distributed based on uniform load, its feature are existed
In：When power load distributing is uneven, according to peak load, maximum segment number is obtained, when calculating from two-section to maximum segment number,
Reliability in the case of the optimal segmentation of each segments, takes definitely after doing difference with reliability curve of power load distributing when uniform
Value, according to the order of reliability difference from low to high, arranges segments, finally determines to be segmented according to engineering cost actual conditions
Number；
Comprise the following steps that：
The first step, using intelligent distribution network central database, each branch load p (i) of circuit and branch number i are transferred, in master
Same bar, multiple branches with tower, are attributed to a branch on main line；
Second step, the branch a for asking for total load P, maximum branch load M and its place；
<mrow>
<mi>P</mi>
<mo>=</mo>
<munderover>
<mo>&Sigma;</mo>
<mn>1</mn>
<mi>i</mi>
</munderover>
<mi>p</mi>
<mrow>
<mo>(</mo>
<mi>x</mi>
<mo>)</mo>
</mrow>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>)</mo>
</mrow>
</mrow>
3rd step, determine maximum segment number n according to maximum branch load, and when n is not integer, round numbers backward, is denoted as c, its
In：
<mrow>
<mi>n</mi>
<mo>=</mo>
<mfrac>
<mi>P</mi>
<mi>M</mi>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>2</mn>
<mo>)</mo>
</mrow>
</mrow>
4th step, be segmented since n=2, determines n=c successively, when having a variety of segmented modes under some segments, takes di
Minimum situation, di is PiWith Pi+1Ratio, for contrast two data differences size, record segmentation method, wherein：
Work as Pi＞ Pi+1When,
Work as Pi＜ Pi+1When,
5th step, draw reliability curve, and is contrasted, and load uneven distribution and load are uniformly distributed in the case of two kinds
The reliability curve being segmented is plotted in the same window, makees difference Di at each waypoint：
Di=load is uniformly distributed-uneven distribution (5)
Sort according to order ascending Di, up to a sequence of optimal segmentation number, according still further to engineering cost, installation site
Optimal actual conditions determine most equitable subsection number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585609.4A CN105207201B (en) | 2015-09-15 | 2015-09-15 | A kind of power distribution network feeder line optimizing fractional method that maximum power supply reliability is distributed based on uniform load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585609.4A CN105207201B (en) | 2015-09-15 | 2015-09-15 | A kind of power distribution network feeder line optimizing fractional method that maximum power supply reliability is distributed based on uniform load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105207201A CN105207201A (en) | 2015-12-30 |
| CN105207201B true CN105207201B (en) | 2018-05-11 |
Family
ID=54954711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510585609.4A Active CN105207201B (en) | 2015-09-15 | 2015-09-15 | A kind of power distribution network feeder line optimizing fractional method that maximum power supply reliability is distributed based on uniform load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105207201B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011170571A (en) * | 2010-02-18 | 2011-09-01 | Nippon Telegr & Teleph Corp <Ntt> | Distributed computing system, distribution and combination apparatus for distributed computing, and terminal device |
| CN102033999B (en) * | 2010-12-10 | 2012-10-17 | 天津天大求实电力新技术股份有限公司 | Load distribution based method for calculating recently planned annual line loss of medium-voltage distribution network |
| CN104134166A (en) * | 2014-07-30 | 2014-11-05 | 国家电网公司 | Method for calculating overall coordination indexes of power source, power grid and load |
| CN104852374A (en) * | 2015-05-18 | 2015-08-19 | 国家电网公司 | Firefly algorithm-based distributed power supply optimal capacity and position determination method |
-
2015
- 2015-09-15 CN CN201510585609.4A patent/CN105207201B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105207201A (en) | 2015-12-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108318782B (en) | Power distribution network fault area identification method based on network topology and distribution transformer power failure information | |
| CN106291252A (en) | A kind of 10kV line loss and low-voltage platform area line loss management analysis method | |
| CN105096207B (en) | Important power user power supply reliability assessment method based on analytic hierarchy process | |
| CN112329806B (en) | Ammeter clustering method for topology identification of low-voltage transformer area | |
| CN105069527A (en) | Zone area reasonable line loss prediction method based on data mining technology | |
| CN106130189B (en) | Construction site temporary power condition monitoring system and method | |
| CN107968405A (en) | A kind of unplanned blackouts monitoring method of distribution based on battalion's auxiliary tone perforation | |
| CN104009467A (en) | Meter and power distribution network reliability assessment and prediction method for pre-arranging power outage influence | |
| CN105553807A (en) | 10kV low voltage smart power distribution network system with looped network communication structure | |
| CN103679294A (en) | Differentiation based power transmission network anti-disaster ability planning method | |
| CN103106624A (en) | Method of building reliable improved effect relation between investment on power grid and power supply | |
| CN103093391A (en) | City power distribution network arranging method | |
| CN107147111A (en) | The distribution power automation terminal points distributing method analyzed based on power supply reliability | |
| CN103903192A (en) | Method for establishing power supply mode bank of power distribution network | |
| CN105760971A (en) | Urban power grid structure optimization method based on reliability comparative analysis | |
| Xia et al. | BCGI: A fast approach to detect malicious meters in neighborhood area smart grid | |
| CN103077484A (en) | Multi-dimensional power flow evaluation index method based on statistic analysis of historical information of power grid | |
| CN105048456A (en) | Loss-reducing and energy-saving management method and system applied to intelligent metering platform | |
| CN111027886A (en) | Evaluation method of low-voltage treatment scheme considering unit cost effectiveness | |
| CN109754336A (en) | A kind of intelligent distribution network self-healing property appraisal procedure based on uncertain theory | |
| CN106530134A (en) | Influence index marginal benefit analysis method and device based on reliability calculation model | |
| CN105207201B (en) | A kind of power distribution network feeder line optimizing fractional method that maximum power supply reliability is distributed based on uniform load | |
| CN105067877A (en) | Method of calculating power consumption mean value of multiple transformer parallel power supply system | |
| DE102007063513B4 (en) | Production energy data collection and analysis system | |
| CN104537440A (en) | Transmission capacity and wind fire bundling optimization method for extra-high voltage channel based on entropy method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |