CN104122470B - A kind of method for judging the operation of power distribution network ring-type - Google Patents
A kind of method for judging the operation of power distribution network ring-type Download PDFInfo
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- CN104122470B CN104122470B CN201410362518.XA CN201410362518A CN104122470B CN 104122470 B CN104122470 B CN 104122470B CN 201410362518 A CN201410362518 A CN 201410362518A CN 104122470 B CN104122470 B CN 104122470B
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Abstract
The invention discloses a kind of method for judging the operation of power distribution network ring-type, using position of the switch information, with node dimension as break-through point, power distribution network loop-net operation can quickly, be reliably judged, the risk of distribution network operation is reduced, the management difficulty of distribution network operation is reduced；The power distribution network that can correctly judge is run in looped network mode；Make use of prior art condition well, it is easy to accomplish.Whether the method for the present invention is simple, easy to operate, compensate at present still without a kind of automatic discrimination power distribution network with the blank of ring-type operation method.
Description
Technical field
The invention belongs to technical field of power systems, more particularly to a kind of method for judging the operation of power distribution network ring-type.
Background technology
Power distribution network, as power network power supply terminal, is to contact part the most close with power consumer.At present, domestic power distribution network
Run in radial or " hand in hand " mode.Radial to operate to single supply power supply mode, transformer station is radial " tree root ",
Power consumer is " leaf "；" hand in hand " method of operation is dual power supply mode, and first and last end power supply can be same transformer station
Two buses can also be two different transformer stations.Two kinds of methods of operation are non-loop-net operation mode.Power distribution network closed loop
Operation can produce circulation to adversely affect scheduling and grid stability in distribution, and the ground short circuit of operation with closed ring is electric
Stream is larger to easily cause the harm such as fault spread.Therefore, power distribution network of short duration fortune in a closed loop manner only when Loop Closing Operation is carried out
OK, open loop situations are recovered after grid switching operation is finished immediately.Still whether run with ring-type without a kind of automatic discrimination power distribution network at present
Method.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of method for judging the operation of power distribution network ring-type, it is intended to solved at present still
Whether there is no a kind of automatic discrimination power distribution network with the problem of ring-type operation method.
The embodiment of the present invention is achieved in that a kind of method for judging the operation of power distribution network ring-type, the judgement power distribution network ring
The method of shape operation is comprised the following steps：
Step one, reads in method of operation information and position of the switch information, and each all switching informations of region transformer station are stored in
Sequence A；
Whether step 2, generating structure sequence B, decision node number is not less than 2, terminates to judge if nodes are less than 2；If
Nodes are not less than 2；Then calculate each node dimension；
Step 3, determines whether 1 dimension node, if being to occur in that looped network without 1 dimension node, then terminates to judge；If in the presence of
1 dimension node, queue Q is put into by 1 dimension node1；
Step 4, will be with Qi-1The 2 dimension nodes that interior joint is connected are put into Qi, i=2；By QiInterior joint is put into Q1, judge whether
Have and QiInterior joint be connected 2 dimension nodes, if in the presence of with QiInterior joint is connected 2 dimension nodes, then and+1, return will be with Qi-1Interior joint is connected
2 dimension nodes be put into Qi；If not existing and QiThe connected 2 dimension nodes of interior joint, then carry out next step high；
Step 5, will be with QiAnother node on the associated side of interior joint is put into queue P1, judge P1In whether containing 1 dimension
, if there is not 1 dimension node, there is looped network in node, terminates to judge；If occurring 1 dimension node, Q is deleted in B1Interior joint
And corresponding side, return to step two.
Further, it is that actual electric network information is converted into computer to be easy to read in method of operation information and position of the switch information
The network topological information for the treatment of；Topology information is mainly made up of node and branch.
Further, position of the switch information is obtained by remote measurement, via work station, power distribution automation substation, power distribution automation master
Stand last uploading among scheduling system D5000.
What the present invention was provided judges the method that power distribution network ring-type is run, and is prominent with node dimension using position of the switch information
Breakpoint, can quickly, reliably judge power distribution network loop-net operation；Power distribution network ring-type can be avoided to run the short circuit current for producing
The ill effect that the accident scope that increase is caused expands, causality loss expands, reduces the risk of distribution network operation；Can avoid
The circulation that the operation of power distribution network ring-type is produced, reduces power distribution network running wastage, and save energy improves economic benefit, reduces
The management difficulty of distribution network operation；The power distribution network that can correctly judge is run in looped network mode；Existing skill is make use of well
Art condition, it is easy to accomplish.The method of the present invention is simple, easy to operate, compensate at present still without a kind of automatic discrimination power distribution network
Whether with the blank of ring-type operation method.
Brief description of the drawings
Fig. 1 is the method flow diagram of judgement power distribution network ring-type operation provided in an embodiment of the present invention；
Fig. 2 is the particular flow sheet of the embodiment of the method for judgement power distribution network ring-type operation provided in an embodiment of the present invention；
Fig. 3 is data flow figure in the position of the switch provided in an embodiment of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Below in conjunction with the accompanying drawings and specific embodiment is further described to application principle of the invention.
As shown in figure 1, the method for judging the operation of power distribution network ring-type of the embodiment of the present invention is comprised the following steps：
S101：Method of operation information and position of the switch information are read in, each all switching informations of region transformer station are stored in sequence
Row A；
S102：Whether generating structure sequence B, decision node number is not less than 2, terminates to judge if nodes are less than 2；If section
Points are not less than 2；Then calculate each node dimension；
S103：1 dimension node is determined whether, if being to occur in that looped network without 1 dimension node, then terminates to judge；If in the presence of 1
Dimension node, queue Q is put into by 1 dimension node1；
S104：Will be with Qi-1The 2 dimension nodes that interior joint is connected are put into Qi, i=2；By QiInterior joint is put into Q1, determine whether
With QiInterior joint be connected 2 dimension nodes, if in the presence of with QiInterior joint is connected 2 dimension nodes, then and+1, return will be with Qi-1What interior joint was connected
2 dimension nodes are put into Qi；If not existing and QiThe connected 2 dimension nodes of interior joint, then carry out next step high；
S105：Will be with QiAnother node on the associated side of interior joint is put into queue P1, judge P1In whether containing 1 dimension section
, if there is not 1 dimension node, there is looped network in point, terminates to judge；If occurring 1 dimension node, Q is deleted in B1Interior joint and
Corresponding side, return to step S102；
A uses queue structure, wherein the storage of first storage location is parent node numbering, the storage of the second storage location
What is deposited is the Node Switch state, and 0 represents disconnected position, and 1 represents conjunction position；The all child node numberings of the node store storage method successively
Ibid；
Operation principle of the invention：Power distribution network is made up of the relevant device such as distribution line and switch, back brake.Influence power network
Only circuit and the on off state of the method for operation, circuit build up after putting into operation and hardly change certainly, therefore influence network operation side
Only this factor of the position of the switch of formula.No matter switchtype and model, when the switch is closed power by mains side flow into, load
Side is flowed out, i.e., the switch links together inlet wire and outlet, and the dimension of the switching node is 2；When the switches are opened, inlet wire with
Outlet disconnects, and the node dimension is 1；When power network is run with ring-type, all position of the switch are conjunction position on ring, i.e. each switch
The dimension of node is 2；If being switched off on looped network, looped network unlinks therewith, and the switching node dimension is changed into 1；Therefore, as long as
After tieing up node whole elimination by network 1 successively, judge whether there is looped network to deposit by judging whether also 2 dimension node presence
；Method particular flow sheet is as shown in Figure 1：
As shown in fig. 1, reading method of operation information and position of the switch information are mainly and are converted into actual electric network information
The easy-to-handle network topological information of computer；Topology information is mainly made up of node and branch, it is easy to realized judging with program
Method.Sequence A storages are region transformer substation switch information, and information format is that transformer station numbers and switch number, region power transformation
Station is the power supply point in power distribution network, and switch therein will be used as root node.The data of structure sequence B storages are made with A interior joints
It is all branch node information of root node, i.e. all nodes in B are all directly or indirectly to be connected with respective nodes in A.
Sequence B storage switch numbering in the form of chained list, first of chained list is summit switch number, and other positions are and the summit phase
Switch number even.The core of the method is that, by all 1 dimension knots removals in topology, do not have if all nodes can be eliminated
Looped network, must be with the presence of looped network if the 2 dimension nodes for finally occurring eliminating.
According to existing power distribution automation level, position of the switch information can be obtained, via work station, matched somebody with somebody the present invention by remote measurement
Electric automation substation, power distribution automation main station are finally uploaded among scheduling system D5000.Specific position of the switch information data is obtained
Take approach as shown in Figure 3.
The present invention power distribution network that can correctly judge is run in looped network mode；Using position of the switch information, tieed up with node
It is break-through point to spend, and can quickly, reliably judge power distribution network loop-net operation, reduces power distribution network operation risk, reduces power distribution network
Operational management difficulty.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (3)
1. it is a kind of to judge the method that power distribution network ring-type is run, it is characterised in that the method for judgement power distribution network ring-type operation includes
Following steps：
Step one, reads in method of operation information and position of the switch information, and each all switching informations of region transformer station are stored in into storage
Space A, A use queue structure, wherein the storage of first storage location is parent node numbering, the storage of the second storage location
Be the Node Switch state, 0 represents disconnected position, and 1 represents and closes position；The all child node numberings of the node are stored successively, storage method
Ibid；
Whether step 2, generating structure sequence B, decision node number is not less than 2, terminates to judge if nodes are less than 2；If node
Number is not less than 2；Each node dimension is then calculated using the traversal method of breadth First；
Step 3, determines whether 1 dimension node, if being to occur in that loop-net operation without 1 dimension node, then terminates to judge；If in the presence of
1 dimension node, storage queue Q is put into by 1 dimension node1；
Step 4, will be with Qi-1The 2 dimension nodes that interior joint is connected are put into Qi, i=2；By QiInterior joint is put into Q1, determine whether with
QiInterior joint be connected 2 dimension nodes, if in the presence of with QiInterior joint connected 2 ties up nodes, then i+1, will be with Qi-1The 2 dimension sections that interior joint is connected
Point is put into Qi；If not existing and QiThe connected 2 dimension nodes of interior joint, then carry out next step；
Step 5, will be with QiAnother node on the associated side of interior joint is put into queue P1, judge P1In whether containing 1 dimension node,
If there is not 1 dimension node, there is looped network, terminate to judge；If occurring 1 dimension node, Q is deleted in B1Interior joint and correspondence
Side, return to step two.
2. the as claimed in claim 1 method for judging the operation of power distribution network ring-type, it is characterised in that reading method of operation information and
It by actual electric network information by dispatching system converting is the easy-to-handle network topological information of computer that position of the switch information is；Open up
Information is flutterred to be made up of node and branch.
3. it is as claimed in claim 1 to judge the method that power distribution network ring-type is run, it is characterised in that position of the switch information is by remote measurement
Obtain, finally uploaded among scheduling system D5000 via work station, power distribution automation substation, power distribution automation main station.
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| CN201410362518.XA CN104122470B (en) | 2014-07-28 | 2014-07-28 | A kind of method for judging the operation of power distribution network ring-type |
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| DE19906276A1 (en) * | 1999-02-15 | 2000-09-21 | Heusler Isabellenhuette | Method and current measuring module for current monitoring in a power supply system |
| US7308370B2 (en) * | 2005-03-22 | 2007-12-11 | Elster Electricity Llc | Using a fixed network wireless data collection system to improve utility responsiveness to power outages |
| CN103323688B (en) * | 2012-03-20 | 2015-11-25 | 华北电力科学研究院有限责任公司 | A kind of harmonic state estimation method and apparatus of electric system |
| CN103248041B (en) * | 2013-03-29 | 2015-01-21 | 国家电网公司 | Looped network detection method based on bus depth conflict calculation |
| CN203481822U (en) * | 2013-08-25 | 2014-03-12 | 国家电网公司 | Closed loop power supply model of medium voltage 10 kilovolt power distribution network |
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