CN108667013A - A kind of multi-source heterogeneous power distribution network position of the switch identification analysis method - Google Patents
A kind of multi-source heterogeneous power distribution network position of the switch identification analysis method Download PDFInfo
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- CN108667013A CN108667013A CN201810494126.7A CN201810494126A CN108667013A CN 108667013 A CN108667013 A CN 108667013A CN 201810494126 A CN201810494126 A CN 201810494126A CN 108667013 A CN108667013 A CN 108667013A
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- switch
- power
- distribution network
- power distribution
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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
-
- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of multi-source heterogeneous power distribution network position of the switch to recognize analysis method.This method includes：Step 1：Respectively switch builds the netted topology controlment of radiation as artis using in power distribution network；Step 2：Acquire the power data and real time monitoring of each switch；Step 3：Calculating analysis is carried out to the power of each switch, and judges the position of each switch according to the result for calculating analysis.Using the method for the present invention when determining current topological structure, the search of the up and down branch of place node can be passed through, topological structure is determined according to the situation of change of this branch road interdependent node measurement, it eliminates influence of the mistake measurement to determining topological structure simultaneously in this way, new thinking is provided for the misidentification in line loss calculation system.
Description
Technical field
The present invention relates to power distribution network position of the switch detection fields, and in particular to a kind of multi-source heterogeneous power distribution network position of the switch is distinguished
Know analysis method.
Background technology
Multi-source heterogeneous power distribution network grid side is furnished with a large amount of controllable switch, keeps the network topology of power distribution network more flexible.Match
In net topology analytic process, the switch operating status of mistake not only influences admittance matrix, or even has an effect on the topological fragment of power grid
With the node size of every power grid.After topological analysis, need the data such as the power of switch being converted to state estimation needs
Measurement information.The generating process that analysis measures can find that regulation positive direction, the switch multiplying power of switch power occur to give birth to when mistake
At the metric data of mistake.It is opened up as it can be seen that the error message of power network switch results in the overwhelming majority encountered when Power Network Status Estimation
Flutter mistake and bad data.Electric power networks Topology Error, be generally divided on off state be closed and actual switch-off, on off state disconnect and
It is practical to be closed.
The key of line loss calculation is to obtain correct electric network composition, parameter, operation data etc..It is made by initial data inaccuracy
At calculating error be the 82%~84% of overall error, it is seen that whether initial data complete and is accurately that line loss calculation result is accurate
Key, and topological structure of electric that line loss calculation system obtains, operation data, safeguarding information etc., there are a large amount of mistakes, and distinguish
Know difficult.In order to obtain accurate line loss calculation as a result, must debug information, therefore it is first split before line losses management
Off status information is recognized.
Invention content
The purpose of the present invention is in view of the deficienciess of the prior art, a kind of multi-source heterogeneous power distribution network position of the switch of offer is distinguished
Know analysis method.
To achieve the above object, the present invention provides a kind of multi-source heterogeneous power distribution network position of the switch to recognize analysis method, packet
It includes：
Step 1：Respectively switch builds the netted topology controlment of radiation as artis using in power distribution network；
Step 2：Acquire the power data and real time monitoring of each switch；
Step 3：Calculating analysis is carried out to the power of each switch, and each switch is judged according to the result for calculating analysis
Position.
Further, the step 3 includes：
Step 301：The total N that other power changed switch is caused when each switch disconnects is counted respectively；
Step 302：Count the establishment condition number N1 of the changed switch of actual power in sum N；
Step 303：Calculate the probability f=N1/N that each switch disconnects.
Step 304：As the probability f that certain switch disconnects>When 0.5, it is considered as disconnection, otherwise, is considered as closure.
Further, when analyzing the state of certain switch, using the switch as separation, prime is switched and is opened with this grade and rear class
The judgement respectively closed；
The prime switch is with abs [P- (P0-P ')]<R as whether true Rule of judgment；
Described grade and rear class switch are with P<R as whether true Rule of judgment, wherein P is before power changes
The active power respectively switched, P0 be changed power after the active power respectively switched, P ' be prime switch reduce wattful power
Rate, R are setting value.
Further, there are two when the disconnection probability of above switch in same major loop is analyzed in calculating, synthesis is respectively opened
It closes the condition respectively and simultaneously switched off and calculates analysis, take the comprehensive probability f the maximum that disconnects of each switch as Calculation results.
Advantageous effect：Using the method for the present invention when determining current topological structure, can up and down it be propped up by place node
The search on road determines topological structure according to the situation of change of this branch road interdependent node measurement, eliminates mistake simultaneously in this way
The influence to determining topological structure is accidentally measured, new thinking is provided for the misidentification in line loss calculation system.
Description of the drawings
Fig. 1 is the structural schematic diagram of the multi-source heterogeneous power distribution network of the embodiment of the present invention.
Specific implementation mode
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, and the present embodiment is with technical solution of the present invention
Premised under implemented, it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.
An embodiment of the present invention provides a kind of multi-source heterogeneous power distribution network position of the switch to recognize analysis method, and this method includes：
Step 1：Respectively switch builds the netted topology controlment of radiation as artis using in power distribution network.Radiation network refers to work(
Rate presses the dendroid network of fixed-direction conveying, and power distribution network typically belongs to radiation network.When the topological structure of radiation network does not change
When, no matter how operation of power networks state changes, and the power of branch road must flow to be born by what one or more load points formed
Lotus group, the node in network have specific supply terminals and point of isoelectric point.
There are two main features for radiation network：First, in radiation network when topological structure changes, power distribution relationship is
It can be pre-determined (in the case where not considering via net loss)；Second, in radiation network when topological structure changes, respectively
The injecting power of node is confirmable.
Step 2：Acquire the power data and real time monitoring of each switch.
Step 3：Calculating analysis is carried out to the power of each switch, and each switch is judged according to the result for calculating analysis
Position.
Wherein, step 3 specifically includes：
Step 301：The total N that other power changed switch is caused when each switch disconnects is counted respectively.Analysis
When the state of certain switch, using the switch as separation, by the judgement respectively of prime switch and this grade and rear class switch.
Step 302：Count the establishment condition number N1 of the changed switch of actual power in sum N.The prime is opened
It closes with abs [P- (P0-P ')]<R as whether true Rule of judgment.Described grade and rear class switch are with P<R as whether at
Vertical Rule of judgment, wherein P is each switch active power before power changes, and P0 is respectively switching after changed power
Active power, P ' are the active power that prime switch reduces, and R is setting value, is usually set to a smaller positive number.
For example, as shown in Figure 1, the power distribution network has 24 switches, label is respectively 1 to No. 24, it is existing it needs to be determined that
The state of switch 8, after switch 8 is cut-off, the power (9,10,12,13,14) of switch behind will become zero, and the front is opened
Pass power (4,3,2, l) P ' will be reduced, and on its switch arranged side by side and follow-up switch (5,6,7,11) and different main branchs
It is constant to switch (15 and subsequent node) power.The changed node of power can be taken as the condition such as table for differentiating the position of the switch
Shown in 1：
The criterion table that switch 8 disconnects
Table 1
Wherein, P ' is the power before switch 8 disconnects, herein, N=10, as the disconnection probability f=N1/N of switch 8>When 0.5,
Then think that switch 8 is off, otherwise, switch 8 is in closed state.
Step 303：Calculate the probability f=N1/N that each switch disconnects.
Step 304：As the probability f that certain switch disconnects>When 0.5, it is considered as disconnection, otherwise, is considered as closure.
Calculate analyze same major loop in there are two when the disconnection probability of above switch, comprehensive each switch is respectively and together
When the condition that disconnects calculate analysis, take the comprehensive disconnection probability f the maximum of each switch as Calculation results.Such as switch 8 and open
5 are closed, at this moment only needs respectively to sentence the condition that condition that switch 5 is cut-off, switch 8 are cut-off and the condition that switch 8 and 5 simultaneously switches off
It is disconnected, as shown in table 1 to 3：
The criterion table of the disconnection of switch 5
Table 2
The criterion table that switch 8 is simultaneously switched off with switch 5
Table 3
Wherein, P 〞 are the power before switch 5 disconnects, and calculate separately out the probability f1 of the disconnection of switch 5, and switch 8 disconnects general
Rate f2, the probability f3 that switch 5 and 8 simultaneously switches off take f1, f2 and f3 the maximum as the conclusion for calculating analysis.
In conclusion using the method for the present invention when determining current topological structure, can up and down be propped up by place node
The search on road determines topological structure according to the situation of change of this branch road interdependent node measurement, eliminates mistake simultaneously in this way
The influence to determining topological structure is accidentally measured, new thinking is provided for the misidentification in line loss calculation system.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (4)
1. a kind of multi-source heterogeneous power distribution network position of the switch recognizes analysis method, which is characterized in that including：
Step 1：Respectively switch builds the netted topology controlment of radiation as artis using in power distribution network；
Step 2：Acquire the power data and real time monitoring of each switch；
Step 3：Calculating analysis is carried out to the power of each switch, and judges the position of each switch according to the result for calculating analysis
It sets.
2. the multi-source heterogeneous power distribution network position of the switch according to claim 1 recognizes analysis method, which is characterized in that the step
Rapid 3 include：
Step 301：The total N that other power changed switch is caused when each switch disconnects is counted respectively；
Step 302：Count the establishment condition number N1 of the changed switch of actual power in sum N；
Step 303：Calculate the probability f=N1/N that each switch disconnects.
Step 304：As the probability f that certain switch disconnects>When 0.5, it is considered as disconnection, otherwise, is considered as closure.
3. the multi-source heterogeneous power distribution network position of the switch according to claim 2 recognizes analysis method, which is characterized in that analyze certain
When the state of switch, using the switch as separation, by the judgement respectively of prime switch and this grade and rear class switch；
The prime switch is with abs [P- (P0-P ')]<R as whether true Rule of judgment；
Described grade and rear class switch are with P<R as whether true Rule of judgment, wherein P be power change before it is each
The active power of switch, P0 are the active power respectively switched after changed power, and P ' is the active power that prime switch reduces, R
For setting value.
4. the multi-source heterogeneous power distribution network position of the switch according to claim 2 recognizes analysis method, which is characterized in that calculating
There are two analyzing in same major loop when the disconnection probability of above switch, synthesis is each to switch the condition meter respectively and simultaneously switched off
Point counting is analysed, and takes the comprehensive probability f the maximum that disconnects of each switch as Calculation results.
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| CN201810494126.7A CN108667013B (en) | 2018-05-22 | 2018-05-22 | Method for identifying and analyzing switch positions of multi-source heterogeneous power distribution network |
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| CN201810494126.7A CN108667013B (en) | 2018-05-22 | 2018-05-22 | Method for identifying and analyzing switch positions of multi-source heterogeneous power distribution network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112398678A (en) * | 2020-10-16 | 2021-02-23 | 清华大学 | Operation mode topological structure feature extraction method suitable for multi-source heterogeneous power grid |
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