CN107834545A - A kind of city 110kV power network cyclization methods based on transfer load method - Google Patents
A kind of city 110kV power network cyclization methods based on transfer load method Download PDFInfo
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- CN107834545A CN107834545A CN201711114658.5A CN201711114658A CN107834545A CN 107834545 A CN107834545 A CN 107834545A CN 201711114658 A CN201711114658 A CN 201711114658A CN 107834545 A CN107834545 A CN 107834545A
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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
- 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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Abstract
The invention discloses a kind of city 110kV power network cyclization methods based on transfer load method, including：Generation includes the initial adjacency matrix of power network topology information；Obtain cyclization both sides 220kV access path；First time cyclization emulation testing is carried out, if storing this cyclization scheme into result of calculation table if；Site information is stored into site information table；Website in result of calculation table is further screened, the website sum after being screened；Iteration of simulations calculating is carried out one by one to the website of transferable load Loop Closing Operation, stored if by verification into checkout result table；Otherwise the simulation calculation of next website, the website after having traveled through all screenings are carried out；If result of calculation table remains as sky, trans-regional two optimal 220kV cyclizations websites are found by searching for shortest path；The partition scheme validity for realizing to obtain is higher, solves the limitation of traditional scheme, ensure that the technique effect of power supply reliability.
Description
Technical field
The present invention relates to urban distribution network research field, in particular it relates to a kind of city 110kV electricity based on transfer load method
Network closed loop method.
Background technology
With the continuous development of China's voltage class, receiving end sub-area division is imperative, as《Power system security is stable
Directive/guide》In explicitly point out：" with the construction of high voltage order one power network, partition running, phase should be done step-by-step in subordinate voltage power network
Keep standby each other between adjacent subregion, the electromagnetic looped network of the different voltage class for the electricity net safety stable that should avoid and eliminate the effects of the act ".
Due to the method for operation of China's power network " closed loop design, open loop operation ", urban distribution network 110kV and following voltage class
Power network is largely run using radial pattern dual power supply form：Each load point is comprising an access power supply and a standby electricity
Source, under normal circumstances load powered by single power supply.Once working line breaks down, it is electrically operated to carry out make and break, then will
In-put of spare power supply uses, so as to which part ensure that reliability, the continuation of power supply.Two kinds can be used during failure under normal circumstances
Mode is repaired, first, the transfer carrying out failure load by way of " cold fall ", that is, disconnect faulty line to failure load
Carry out power failure processing, then by extension wire interconnection switch cyclization.The advantage of this maintenance mode is that Loop Closing Operation is guarded, to electricity
Network operation influences small, reliability height, and shortcoming is that transient-power failure can be caused, and the normal life production to customer interrupted causes one
Fixed loss, but for important load, hospital, government bodies, factory etc., have a power failure the damage that may then cause to estimate
Lose.Second, cyclization both sides 220kV websites are carried out into Loop Closing Operation, i.e., first strengthen the electrical link of cyclization both sides, then carry out 110kV
Circuit Loop Closing Operation, because 220kV level Grids circuit, design of transformer amount of redundancy are big, while it is with higher level's 500kV voltages etc.
Level electromagnetic looped network operation, is that the Loop Closing Operation between 220kV is safer；But then, due to 220kV circuit cyclizations pair
Network load trend has a great influence, and inevitably results in the change of whole distract electric network swim after cyclization.
So using traditional cyclization mode, for high-grade voltage security after the trend distribution situation after cyclization and cyclization
Verification can expend great resource.Meanwhile China's grid company is responsible for the city-level Utilities Electric Co. of 110kV voltage class operation maintenance
There is no the scheduling authority of 220kV voltage class, if superior control centre applies, need substantial amounts of time and administration cost,
So as to which border website can not cut operation the very first time in the lookaside wire of trouble time, therefore failure can not be cut the very first time
Remove, there is the risk of power failure.
The content of the invention
The invention provides a kind of city 110kV power network cyclization methods based on transfer load method, solve solution tradition
The problem of cyclization scheme is no longer applicable under sub-area division operation background, the partition scheme validity for realizing to obtain is higher, solution
The certainly limitation of traditional scheme, it ensure that the technique effect of power supply reliability.
For achieving the above object, this application provides a kind of city 110kV power network cyclizations based on transfer load method
Method, methods described include：
Step 1：Electric network data is read, power network 220kV substation datas, AC line data is obtained and becomes with power network 500kV
There is the 220kV transformer stations node number being directly electrically connected in power station, and generation includes the initial adjacency matrix of power network topology information；
Step 2：Based on initial adjacency matrix, Depth Priority Algorithm acquisition cyclization both sides 220kV link road is used
Footpath, if its shortest path passes through 500kV websites, judge it for partition running；Otherwise it is then with region cyclization situation.Depth is excellent
First search method is a kind of Topology identification algorithm of high efficient and reliable.Limit in whole figure is divided into two parts, that is, after accessing
Limit and do not access limit.Again from specified limit, the principle based on depth-first, all non-accessed nodes are searched
Rope accesses, untill the limit under all the same areas is accessed.Its feature is that all nodes can access, and
The search result of depth capacity can be obtained.
Step 3：First time cyclization emulation testing is carried out, if storing this cyclization scheme into result of calculation table if；
Otherwise step 4 is carried out.
Step 4：It is identified using the transferable load site information of breadth-first search involutive ring both sides 220kV,
These site information are stored into site information table.Breadth-first search is a kind of blindness search method, it is therefore an objective to system
Ground deploys and checks all nodes in figure, to look for result.In other words, it is it is not intended that the possible position of result, thoroughly
Whole figure is searched on ground, and untill finding result, resulting result is most broad path in figure.
Step 5：According to the situation of cyclization both sides 220kV bus phase angles, website in result of calculation table is further screened, phase
The big side in angle, which retains, may move into website, the small extensible website of once reservation of phase angle, the website sum after being screened；
Step 6：Iteration of simulations calculating is carried out one by one to the website of transferable load Loop Closing Operation, by it if by verification
Storage is into checkout result table；Otherwise the simulation calculation of next website is carried out, until having traveled through in step 5 after all screenings
Website.
Step 7：If result of calculation table remains as sky after step 6, traditional cyclization scheme is carried out, i.e., by searching for shortest path
Trans-regional two optimal 220kV cyclizations websites are found in footpath, i.e., first cyclization both sides are run into electromagnetic looped network, carried out
110kV Loop Closing Operations.
According to such scheme, in the step 2, carry out recognizing 500kV transformer stations using Depth Priority Algorithm
General layout is run, is specially：Obtain the adjacent relation matrix of power network 220kV websites；Obtained using Depth Priority Algorithm current
The number of partitions of scheme and its comprising 220kV websites.
According to such scheme, in addition to step 3 and step 6：By the way of PSASP software tool packs are called, to gained
Cyclization scheme carries out static security analysis and short circuit current verification, preserves the partition scheme that simultaneously output verification passes through.
One or more technical schemes that the application provides, have at least the following technical effects or advantages：
1) the operation general layout module of 500kV transformer stations is recognized based on Depth Priority Algorithm by adding, this method takes
It is higher for the form of artificial formulation partition scheme, obtained partition scheme validity.
2) the city 110kV power network cyclization methods based on transfer load method, can obtain feasible cyclization scheme, solution
The certainly limitation of traditional scheme, ensure that power supply reliability.And whole cyclization strategy is set to be grasped in 110kV voltage class
Make, so as to greatly improve the operational efficiency of prefecture-level power network O＆M company.
3) by the way of PSASP software tool packs are called, static security analysis and short circuit are carried out to gained partition scheme
Electric current verifies, and preserves and the scheme that passes through of output verification, enable whole algorithm automatically export it is all meet area principle and
The partition scheme verified by index.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention；
Fig. 1 is the schematic flow sheet of the city 110kV power network cyclization methods based on transfer load method；
Fig. 2 is XY110kV stations wiring schematic diagram；
Fig. 3 is schematic diagram before XY110kV-SY110kV cyclizations；
Fig. 4 is schematic diagram after XY110kV-SY110kV cyclizations；
Fig. 5 is that XY110kV-SY110kV changes TF110kV method of operation schematic diagrames；
Fig. 6 is schematic diagram after XY110kV-SY110kV new departure cyclizations.
Embodiment
The invention provides a kind of city 110kV power network cyclization methods based on transfer load method, solve solution tradition
The problem of cyclization scheme is no longer applicable under sub-area division operation background, the partition scheme validity for realizing to obtain is higher, solution
The certainly limitation of traditional scheme, it ensure that the technique effect of power supply reliability.
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting mutually, the application's
Feature in embodiment and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be implemented using other different from the other modes in the range of being described herein, therefore, protection scope of the present invention is not by under
The limitation of specific embodiment disclosed in face.
Fig. 1-Fig. 6 is refer to, this application provides a kind of city 110kV power network cyclization methods based on transfer load method,
Methods described includes：
Step 1：Electric network data is read, the data generation based on reading includes the initial adjacency matrix of power network topology information；
Step 2：Based on initial adjacency matrix, acquisition cyclization both sides 220kV access path, if its shortest path passes through
500kV websites, then judge it for partition running；Otherwise it is with region cyclization situation；
Step 3：First time cyclization emulation testing is carried out, if storing this cyclization scheme into result of calculation table if；
Otherwise step 4 is carried out；
Step 4：220kV transferable load site information in involutive ring both sides is identified, and site information is stored to website
In information table；
Step 5：According to the situation of cyclization both sides 220kV bus phase angles, website in result of calculation table is further screened, phase
The big side in angle, which retains, may move into website, the small extensible website of once reservation of phase angle, the website sum after being screened；
Step 6：Iteration of simulations calculating is carried out one by one to the website of transferable load Loop Closing Operation, by it if by verification
Storage is into checkout result table；Otherwise the simulation calculation of next website is carried out, until having traveled through in step 5 after all screenings
Website；
Step 7：If result of calculation table remains as sky after step 6, trans-regional two are found by searching for shortest path
Optimal 220kV cyclizations website.
Somewhere XY110kV website interconnection wiring diagrams are as shown in Figure 2.Under normal circumstances, it is supplied by HTC220kV power stations
Electricity, and SY220kV is its extension wire, is connected by interconnection.
The identification of cyclization both sides division results, according to the result of Depth Priority Algorithm, from HTC220kV to SY220kV
Shortest path is " HTC220kV ">“WH220kV”>“LX220kV”>“SZ220kV”>“JS220kV”>" SY220kV ", judge to tie
Fruit：Run in different subregions.
The operating structure in the region is as shown in Figure 3.
The direct cyclizations of XY110kV and SY110kV are analyzed cyclization data, judge whether to disclosure satisfy that system by us first
Parameter limits.
Data before and after cyclization are displayed in Table 1：
Data statistics before and after the XY110kV cyclizations of table 1
Known this area 110kV buses are based on LGJ-120/150 model cables, from result, if will
The direct cyclizations of XY110kV-SY110kV, its trend have been over the 110kV capacities of trunk.Due to be before cyclization circuit it
Between larger bus phase angle difference (- 6.1 °), therefore closed loop power flow has exceeded circuit maximum bearing value.Therefore the side of direct cyclization
Case is undesirable.
2 various types of wire of table limits table
Shown in Fig. 3, XY110kV phase angles are less than SY110kV phase angles, can in XY110kV power supply website HTC220kV
There was only TF110kV with the website produced, and SY220kV websites are not present can be transferred to website, so according to cyclization protocol procedures,
Its operation is as follows：
1) TF110kV and WH110kV buses are connected
2) TF110kV and HTC110kV buses are disconnected
3) XY110kV and SY110kV buses are connected
4) XY110kV and HTC110kV buses are disconnected
Operating process is as shown in Figure 5 and Figure 6.
Data statistics before and after the XY110kV website cyclizations of table 3
Can be obtained by data in table 3, compared with the scheme of direct cyclization, new departure because TF110kV website loads transfer,
XY110kV line bus phase angle and SY110kV bus phase angle differences narrow down to -4.1 ° from -6.1 °, so that closed loop power flow is from 99.8
+ j24.2MVa have decreased to 67.8+j18.0MVa.Now closed loop power flow is within capacity of trunk allowed band.
Static security analysis is also through, it was demonstrated that the validity of this programme simultaneously.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (7)
- A kind of 1. city 110kV power network cyclization methods based on transfer load method, it is characterised in that methods described includes：Step 1：Electric network data is read, the data generation based on reading includes the initial adjacency matrix of power network topology information；Step 2：Based on initial adjacency matrix, acquisition cyclization both sides 220kV access path, if its shortest path passes through 500kV Website, then judge it for partition running；Otherwise it is with region cyclization situation；Step 3：First time cyclization emulation testing is carried out, if storing this cyclization scheme into result of calculation table if；Otherwise Carry out step 4；Step 4：220kV transferable load site information in involutive ring both sides is identified, and site information is stored to site information In table；Step 5：According to the situation of cyclization both sides 220kV bus phase angles, website in result of calculation table is further screened, phase angle is big Side retain and may move into website, the small extensible website of once reservation of phase angle, the website after screen is total；Step 6：Iteration of simulations calculating is carried out one by one to the website of transferable load Loop Closing Operation, stored if by verification Into checkout result table；Otherwise the simulation calculation of next website is carried out, until having traveled through the station in step 5 after all screenings Point；Step 7：If result of calculation table remains as sky after step 6, by search for shortest path find trans-regional two it is optimal 220kV cyclization websites.
- 2. the city 110kV power network cyclization methods according to claim 1 based on transfer load method, it is characterised in that read Power taking network data, obtains power network 220kV substation datas, AC line data and has with power network 500kV transformer stations and directly electrically connect The 220kV transformer stations node number connect.
- 3. the city 110kV power network cyclization methods according to claim 1 based on transfer load method, it is characterised in that base In initial adjacency matrix, Depth Priority Algorithm acquisition cyclization both sides 220kV access path is used.
- 4. the city 110kV power network cyclization methods according to claim 1 based on transfer load method, it is characterised in that adopt It is identified with the transferable load site information of breadth-first search involutive ring both sides 220kV.
- 5. the city 110kV power network cyclization methods according to claim 1 based on transfer load method, it is characterised in that institute Stating step 7 also includes：First cyclization both sides are run into electromagnetic looped network, are carrying out 110kV Loop Closing Operations.
- 6. the city 110kV power network cyclization methods according to claim 3 based on transfer load method, it is characterised in that In the step 2, using Depth Priority Algorithm recognize the operation general layout of 500kV transformer stations, be specially：Obtain power network The adjacent relation matrix of 220kV websites；Using Depth Priority Algorithm obtain Current protocols number of partitions and its comprising 220kV websites.
- 7. the city 110kV power network cyclization methods according to claim 1 based on transfer load method, it is characterised in that step Rapid 3 and/or step 6 also include：By the way of PSASP software tool packs are called, static security is carried out to gained cyclization scheme Analysis and short circuit current verification, preserve the partition scheme that simultaneously output verification passes through.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109004646A (en) * | 2018-08-09 | 2018-12-14 | 国网山东省电力公司经济技术研究院 | A kind of sub-area division algorithm based on architectural characteristic |
| CN109687439A (en) * | 2018-12-25 | 2019-04-26 | 积成电子股份有限公司 | A kind of quick calculation method of power transmission network Alloy White Iron |
| CN117498351A (en) * | 2023-12-22 | 2024-02-02 | 成都天合一成科技服务有限公司 | Full-model simulation system based on real-time data of power grid and used for loop closing control |
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| CN102842949A (en) * | 2011-06-22 | 2012-12-26 | 北京市电力公司 | System and method for selected tripping control of loop closing protection |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109004646A (en) * | 2018-08-09 | 2018-12-14 | 国网山东省电力公司经济技术研究院 | A kind of sub-area division algorithm based on architectural characteristic |
| CN109687439A (en) * | 2018-12-25 | 2019-04-26 | 积成电子股份有限公司 | A kind of quick calculation method of power transmission network Alloy White Iron |
| CN117498351A (en) * | 2023-12-22 | 2024-02-02 | 成都天合一成科技服务有限公司 | Full-model simulation system based on real-time data of power grid and used for loop closing control |
| CN117498351B (en) * | 2023-12-22 | 2024-05-14 | 成都天合一成科技服务有限公司 | Full-model simulation system based on real-time data of power grid and used for loop closing control |
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