CN103345549A - Method for implementing electromagnetic looped network on-line monitoring based on longitudinal OSB technology - Google Patents
Method for implementing electromagnetic looped network on-line monitoring based on longitudinal OSB technology Download PDFInfo
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Abstract
The invention discloses a method for implementing electromagnetic looped network on-line monitoring based on a longitudinal OSB technology. According to the method for implementing electromagnetic looped network on-line monitoring based on the longitudinal OSB technology, when devices spanned by an electromagnetic looped network exceed a modeling range of a dispatching control center, the electromagnetic looped network can still be identified. Firstly, semi-looped network is searched locally, when the semi-looped network is confirmed, a higher voltage class grid is searched at the two ends of the semi-looped network, the condition that the higher voltage class grid has a path which is communicated with the semi-looped network is confirmed, and therefore the existence of the complete electromagnetic looped network is judged. When the devices spanned by the electromagnetic looped network exceed the modeling range of the dispatching control center, data are interacted through longitudinal OSB interfaces. On one hand, a semi-looped network of a system needs to be sent upwards by a lower class dispatching system, after the upper class dispatching system obtains the semi-looped network, topological search is conducted from nodes of the head end and the tail end of the semi-looped network, and therefore whether the electromagnetic looped network exists or not is confirmed; on the other hand, a combination relation of boundary circuit end points needs to be sent downwards by the upper class dispatching system, boundary circuits are combined by the lower class dispatching system after the combination relation is obtained, and therefore all the electromagnetic looped networks of a management region in each class dispatching system can be identified by the upper class dispatching system and the lower class dispatching system.
Description
Technical field
The present invention relates to Automation of Electric Systems scheduling field, be specifically related to a kind of implementation method of the electromagnetic looped network in-service monitoring based on vertical OSB technology.
Background technology
Electromagnetic looped network refers to the looped network of the transmission line of electricity formation of two or more different electric pressures.Because different electric pressure equipment contact by transformer, such looped network will inevitably be by the electromagnetic circuit of transformer, so be called " electromagnetic looped network ".
There is adverse influence in electromagnetic looped network to system, comprises following aspect:
1) is unfavorable for the systematic economy operation
2) voltage levels line disconnection, trend is transferred to low-voltage lines, is easy to cause the stability disruption accident, perhaps causes low-voltage lines out-of-limit, threatens security of system stable operation
3) existence of looped network can increase short-circuit current, can cause the out-of-limit problem of rupturing capacity under some situation
4) often need to increase safe stability control device, Bao Hu configuration simultaneously also needs to consider electromagnetic looped network, causes the complicated of protection, increases risk
According to the requirement of " power system safety and stability guide rule ", electric network composition should layering and zoning, should avoid and eliminate electromagnetic looped network.But in fact, in the early stage of development of a voltage levels electrical network, electromagnetic looped network can increase electric network transportation ability, and its existence is inevitable.Power network development need be than growth process simultaneously, and electromagnetic looped network can exist over a period to come.
For electromagnetic looped network, except departments such as Electric Power Network Planning, the method for operation need pay close attention to, dispatching control center also needed to strengthen monitoring.But present power network dispatching system is not outstanding especially for the supervision of electromagnetic looped network, only as the pretreated part of state estimation, lacks detailed displaying and monitoring interface.
China's power scheduling is the classification partition running, the modeling scope difference of the dispatching center of different stage.If the equipment that electromagnetic looped network is crossed over has surpassed the modeling scope of dispatching control center, then can't detect electromagnetic looped network.
Summary of the invention
The objective of the invention is to propose a kind of implementation method of the electromagnetic looped network in-service monitoring based on vertical OSB technology.Can realize that the scheduling of higher level and subordinate cooperatively interacts, interaction data, detect all electromagnetic looped networks in this area.
The technical scheme that the present invention solves the problems of the technologies described above is:
A kind of implementation method of the electromagnetic looped network in-service monitoring based on vertical OSB technology may further comprise the steps:
1. at first carry out the searching of semi-ring net in dispatching center at the corresponding levels; The search of semi-ring net is carried out respectively according to electric pressure, and for the semi-ring net of each electric pressure, its search step is as follows:
(1) this electric pressure electrical network is abstracted into figure, wherein, circuit is abstracted into the limit, the circuit end points is abstracted into the summit of figure, the merging of circuit end points is that following principle is followed on the shared summit of different circuit end points: directly connect between the circuit end points and namely pass through bus connection switch or disconnecting link cross-over connection, then share a summit; If the circuit end points is in same transformer station, and the circuit end points is connected with main transformer mesolow side, if corresponding main transformer voltage levels winding more all no resistances connect, then corresponding circuit end points shares the summit.
(2) the special summit among the affirmation figure.Special summit has following feature: contacting directly with the mesolow side winding of step-down transformer is that no resistance is connected.
(3) special summit is merged into a virtual vertex, forms a new figure, new figure is set analysis, connect branch if exist, then each connects the corresponding loop of branch, if this loop comprises virtual vertex, and the special summit that relates to is not same, judges that then this loop is the semi-ring net.
After confirming the semi-ring net, search a high electric pressure electrical network from semi-ring net two ends, confirm that high one-level electric pressure electrical network exists the path to be communicated with the semi-ring net and can be judged to be complete electromagnetic looped network.
By vertical OSB interactive interfacing data, send on the one hand the semi-ring net of native system on subordinate's dispatching system, higher level's scheduling is obtained the back and is carried out topology search by the first and last end node of semi-ring net and confirm whether electromagnetic looped network exists; The merging relation that needs higher level's dispatching down distributing boundary line terminal point on the other hand, subordinate's scheduling are obtained the back boundary line road are merged.
2. after confirming the semi-ring net, as long as search a high electric pressure electrical network from special summit, confirm that high one-level electric pressure electrical network exists the path to be communicated with the main transformer that special summit connects and can be judged to be complete electromagnetic looped network.
After above-mentioned steps is finished, can search out whole electromagnetic looped networks of this dispatching control center modeling scope, but and do not mean that and search the whole electromagnetic looped networks in this area, must cooperatively interact alternately by two-level scheduler system data up and down, interaction data just can finish; Can adopt classical graph-theoretical algorithm: breadth First or depth-first search algorithm.
3. vertical OSB technology is adopted in data interaction, and the OSB technology is to realize that electrical secondary system is integrated, comprises that horizontal specialty merges the core technology that connects with vertical information, and vertically OSB provides the unified interface standard, realizes that the two-level scheduler system data is mutual up and down.
Vertical OSB technology is adopted in data interaction, and concrete interactive media adopts the XML file, and mutual form is followed following rule:
For electromagnetic looped network the equipment of process, each equipment is formed delegation.The 1st classifies path sequence number as, and the 2nd classifies the cyclization implementor name as, the 3rd row place factory's name of station (circuit is not filled out place factory station name).Its concrete form is as follows:
Path sequence number cyclization implementor name place factory name of station
(1) cyclization of cyclization starting point implementor name plays point device place factory name of station
(2) path is through process equipment place, implementor name path factory name of station
………
N cyclization end device name cyclization end device place factory name of station
For three winding main transformers of electromagnetic looped network process, must clearly mark electromagnetic looped network the winding of process, marked with parenthesis.
4. when the two-stage electric network data is mutual up and down, send the semi-ring net of 110kV electric pressure on subordinate's dispatching system, the semi-ring net first and last end node that send on subordinate's dispatching system is obtained in higher level's scheduling then, confirms by topology search whether electromagnetic looped network exists again; The merging relation of higher level's dispatching down distributing boundary line terminal point, it is as follows to merge rule: if with electric pressure boundary line terminal point the topology contact is arranged outside the zone, then directly merge the summit; If there is the topology contact in the boundary line terminal point of different electric pressures outside the zone, then increase a virtual transformer, boundary line terminal point is placed the different windings of transformer respectively; Subordinate scheduling receive the higher level dispatch receive the merging relational file that the higher level dispatches after, be equivalent to increase a virtual transformer station, all border circuits all are to send from this virtual transformer station, the electromagnetic looped network analytic process of subordinate's scheduling afterwards is constant.
Description of drawings
Fig. 1 is typical electromagnetic looped network synoptic diagram of the present invention.Comprise main transformer, circuit, wherein the dotted line scope is the semi-ring net.
Fig. 2 is a kind of typical 220kV of the present invention transformer station circuit diagram, and wherein the black square represents to close the isolating switch figure of position.Among the figure, white expression isolating switch separately is used for the analysis circuit summit and shares.
Fig. 3 is a 110kV area power grid of the present invention figure.Among the figure, the black square represents to close the isolating switch of position, white expression isolating switch separately.
Fig. 4 is the figure that the present invention takes out.
Fig. 5 is the figure after the present invention merges.
Fig. 6 is OSB bus PUTFILE service message structural drawing of the present invention.
Embodiment
For ease of understanding the present invention, below in conjunction with accompanying drawing the present invention is further described.
The semi-ring net refers to the low cluster tool of electric pressure in the electromagnetic looped network.
A typical electromagnetic looped network as shown in Figure 1, the dotted line scope is the semi-ring net among the figure.
Two main transformers that the semi-ring net connects are followed following condition:
(1) main transformer moves, and is not standby, inspecting state, neither empty charged state;
(2) if two main transformers are at same factory station, then main transformer high-pressure side winding directly can not be no resistance connection (for example connecting by female connection), because the high-pressure side can't form line loop formation electromagnetic looped network in this case
The analysis of semi-ring net topology is that the component voltage grade is carried out respectively, and to one of them electric pressure, concrete steps are as follows:
This electric pressure electrical network is abstracted into figure as shown in Figure 4, and wherein, circuit is abstracted into the limit, and the circuit end points is abstracted into the summit of figure.Following principle is followed in the merging of circuit end points (being that different circuit end points share a summit):
Directly connect between the circuit end points (by bus connection switch or disconnecting link cross-over connection), then share a summit; If the circuit end points is in same transformer station, and the circuit end points is connected with main transformer mesolow side, if corresponding main transformer voltage levels winding more all no resistances connect, then corresponding circuit end points shares the summit.
A kind of typical 220kV transformer station circuit diagram as shown in Figure 2, L1 circuit end points and L2 circuit end points are contacted directly by the 110kV bus, so share a summit; Though L3 circuit end points is not contacted directly with L1 and L2 in the 110kV side, by No. 1 main transformer high-pressure side, contact with No. 2 main transformers by mother's connection in 220kV bus part, contact with L1 and L2 then, L3 circuit end points and L1 and L2 share the summit like this.
Confirm the special summit among the figure.Special summit has following feature: contact directly (no resistance is connected) with the mesolow side winding of step-down transformer.
Special summit is merged into a virtual vertex, forms a new figure.New figure is set analysis.Connect branch if exist, then each connects the corresponding loop of branch.If this loop comprises virtual vertex, and the special summit that relates to is not same, judges that then this loop is the semi-ring net.
A 110kV area power grid figure supposes every bus as shown in Figure 3 in different transformer stations, following surface analysis semi-ring net.
The first step is abstracted into figure, and then abstract result as shown in Figure 4.
In second step, confirm special summit.According to definition, M1, M5, M8 are special summit.
In the 3rd step, special summit is merged into virtual vertex, sets analysis then.Figure after the merging as shown in Figure 5.Among the figure, M1, M5, M8 form a virtual M0, and new figure is set analysis, can obtain a series of branches: L1, L5, L4, L8, L7, also have even branch a: L3.
Each connects the corresponding loop of branch, and then L5, L4, L3, L8 constitute a ring, and this ring is through virtual vertex.And the M5 that is associated with, M8 are not same special summits, are the semi-ring net so judge this ring.
After confirming the semi-ring net, as long as search a high electric pressure electrical network from special summit, confirm that high one-level electric pressure electrical network exists the path to be communicated with the main transformer that special summit connects and can be judged to be complete electromagnetic looped network.
Suppose that Fig. 3 is subordinate scheduling modeling scope, and fail in subordinate's scheduling modeling scope, to search complete electromagnetic looped network that then subordinate's scheduling is mail to the form of higher level's scheduling and is:
| Path sequence number | The cyclization implementor name | Place factory name of station |
| 1 | Main transformer T3 | So-and-so stands |
| 2 | Circuit L5 | |
| 3 | Circuit L4 | |
| 4 | Circuit L3 | |
| 5 | Circuit L8 | |
| 6 | Main transformer T2 | So-and-so stands |
PUTFILE interface in the mutual OSB of the employing bus is realized.The message structure that its WSDL describes as shown in Figure 6.
After higher level's scheduling is received file by the OSB interface, first and last end equipment is carried out the topology search of path, if form complete path, then path and semi-ring net are merged, namely dispatch side the higher level and realized complete electromagnetic looped network identification.
The above embodiment has only expressed one embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (1)
1. the implementation method based on the electromagnetic looped network in-service monitoring of vertical OSB technology is characterized in that, may further comprise the steps:
1) at first carries out the searching of semi-ring net in dispatching center at the corresponding levels; The search of semi-ring net is carried out respectively according to electric pressure, and for the semi-ring net of each electric pressure, its search step is as follows:
(1) this electric pressure electrical network is abstracted into figure, wherein, circuit is abstracted into the limit, the circuit end points is abstracted into the summit of figure, the merging of circuit end points is that following principle is followed on the shared summit of different circuit end points: directly connect between the circuit end points and namely pass through bus connection switch or disconnecting link cross-over connection, then share a summit; If the circuit end points is in same transformer station, and the circuit end points is connected with main transformer mesolow side, if corresponding main transformer voltage levels winding more all no resistances connect, then corresponding circuit end points shares the summit;
(2) the special summit among the affirmation figure.Special summit has following feature: contacting directly with the mesolow side winding of step-down transformer is that no resistance is connected;
(3) special summit is merged into a virtual vertex, forms a new figure, new figure is set analysis, connect branch if exist, then each connects the corresponding loop of branch, if this loop comprises virtual vertex, and the special summit that relates to is not same, judges that then this loop is the semi-ring net;
After confirming the semi-ring net, search a high electric pressure electrical network from semi-ring net two ends, confirm that high one-level electric pressure electrical network exists the path to be communicated with the semi-ring net and can be judged to be complete electromagnetic looped network;
By vertical OSB interactive interfacing data, send on the one hand the semi-ring net of native system on subordinate's dispatching system, higher level's scheduling is obtained the back and is carried out topology search by the first and last end node of semi-ring net and confirm whether electromagnetic looped network exists; The merging relation that needs higher level's dispatching down distributing boundary line terminal point on the other hand, subordinate's scheduling are obtained the back boundary line road are merged;
2) confirm the semi-ring net after, as long as search a high electric pressure electrical network from special summit, confirm that high one-level electric pressure electrical network exists the path to be communicated with the main transformer that special summit connects and can be judged to be complete electromagnetic looped network;
After above-mentioned steps is finished, can search out whole electromagnetic looped networks of this dispatching control center modeling scope, but and do not mean that and search the whole electromagnetic looped networks in this area, must cooperatively interact alternately by two-level scheduler system data up and down, interaction data just can finish;
3) vertical OSB technology is adopted in data interaction, and the OSB technology is to realize that electrical secondary system is integrated, comprises that horizontal specialty merges the core technology that connects with vertical information, and vertically OSB provides the unified interface standard, realizes that the two-level scheduler system data is mutual up and down;
Vertical OSB technology is adopted in data interaction, and concrete interactive media adopts the XML file, and mutual form is followed following rule:
For electromagnetic looped network the equipment of process, each equipment is formed delegation.The 1st classifies path sequence number as, and the 2nd classifies the cyclization implementor name as, the 3rd row place factory's name of station (circuit is not filled out place factory station name), and its concrete form is as follows:
Path sequence number cyclization implementor name place factory name of station
(1) cyclization of cyclization starting point implementor name plays point device place factory name of station
(2) path is through process equipment place, implementor name path factory name of station
………
N cyclization end device name cyclization end device place factory name of station
For three winding main transformers of electromagnetic looped network process, must clearly mark electromagnetic looped network the winding of process, marked with parenthesis;
When 4) the two-stage electric network data is mutual up and down, send the semi-ring net of 110kV electric pressure on subordinate's dispatching system, the semi-ring net first and last end node that send on subordinate's dispatching system is obtained in higher level's scheduling then, confirms by topology search whether electromagnetic looped network exists again; The merging relation of higher level's dispatching down distributing boundary line terminal point, it is as follows to merge rule: if with electric pressure boundary line terminal point the topology contact is arranged outside the zone, then directly merge the summit; If there is the topology contact in the boundary line terminal point of different electric pressures outside the zone, then increase a virtual transformer, boundary line terminal point is placed the different windings of transformer respectively; Subordinate scheduling receive the higher level dispatch receive the merging relational file that the higher level dispatches after, be equivalent to increase a virtual transformer station, all border circuits all are to send from this virtual transformer station, the electromagnetic looped network analytic process of subordinate's scheduling afterwards is constant.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429139A (en) * | 2015-12-15 | 2016-03-23 | 国家电网公司 | Stability control method suitable for multi-level electromagnetic looped network of intertripping main transformer |
| CN110929403A (en) * | 2019-11-22 | 2020-03-27 | 燕山大学 | Micro-grid topology planning method based on loop |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1763782A (en) * | 2005-09-30 | 2006-04-26 | 清华大学 | Power system external network equivalent model automatic forming method |
| US20090063122A1 (en) * | 2006-07-19 | 2009-03-05 | Edsa Micro Corporation | Real-time stability indexing for intelligent energy monitoring and management of electrical power network system |
| CN102195354A (en) * | 2011-05-16 | 2011-09-21 | 中国电力科学研究院 | Large-grid wide-area asynchronous coordination control method |
-
2013
- 2013-06-27 CN CN201310261319.5A patent/CN103345549B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1763782A (en) * | 2005-09-30 | 2006-04-26 | 清华大学 | Power system external network equivalent model automatic forming method |
| US20090063122A1 (en) * | 2006-07-19 | 2009-03-05 | Edsa Micro Corporation | Real-time stability indexing for intelligent energy monitoring and management of electrical power network system |
| CN102195354A (en) * | 2011-05-16 | 2011-09-21 | 中国电力科学研究院 | Large-grid wide-area asynchronous coordination control method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429139A (en) * | 2015-12-15 | 2016-03-23 | 国家电网公司 | Stability control method suitable for multi-level electromagnetic looped network of intertripping main transformer |
| CN105429139B (en) * | 2015-12-15 | 2017-12-15 | 国家电网公司 | A kind of connection suitable for multistage electromagnetic looped network cuts the stable control method of main transformer |
| CN110929403A (en) * | 2019-11-22 | 2020-03-27 | 燕山大学 | Micro-grid topology planning method based on loop |
| CN110929403B (en) * | 2019-11-22 | 2022-10-28 | 燕山大学 | Micro-grid topology planning method based on loop |
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