CN112165171A - Method for identifying topology of low-voltage distribution station area - Google Patents
Method for identifying topology of low-voltage distribution station area Download PDFInfo
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
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Abstract
The invention relates to a method for identifying topology of a low-voltage distribution area, which divides the distribution area into a primary distribution layer, a secondary distribution layer … and an n-level distribution layer, wherein a low-voltage circuit breaker or a disconnecting switch is arranged on a distribution node of each level of distribution layer; the method comprises the following steps that a fusion terminal is arranged on the side of a low-voltage distribution area, the fusion terminal is communicated with a low-voltage circuit breaker or an isolating switch of the area under the jurisdiction and reads the address and electric quantity data of the fusion terminal; the fusion terminal judges the hierarchy relation of the low-voltage transformer area through the address of the low-voltage circuit breaker or the isolating switch, and judges the branch relation of the low-voltage transformer area through the electric quantity of the low-voltage circuit breaker or the isolating switch in the same time period. Compared with the prior art, the invention does not increase special equipment for topology identification, does not need personnel to construct and install, can detect the abnormal change of the topology in real time, does not need manual intervention, and is a low-cost and high-reliability topology identification method.
Description
Technical Field
The invention relates to the field of low-voltage distribution substations, in particular to a method for identifying topology of a low-voltage distribution substation.
Background
With the deepening of the power distribution internet of things, the requirement for clearing the topology of the low-voltage power distribution station area is increasingly strong. The topology identification of the low-voltage distribution station area is the basis of low-voltage distribution fine management, and is a precondition for line fault location, electricity stealing judgment, line loss segmentation analysis and equipment operation and maintenance.
The low-voltage transformer area equipment intelligence provides beneficial help for the topology recognition work of the convergence terminal. Distribution internet of things bottom layer equipment based on full perception and communication, such as low-voltage circuit breakers and isolating switches, are distributed on branch nodes of a low-voltage distribution system. The fusion terminal collects the information of the nodes for analysis and judgment, and is a shortcut for identifying the platform area topology.
The current low-voltage distribution area topology identification technology mainly adopts a signal injection method, the method adopts low-voltage distribution nodes to inject characteristic current signals, and circuit breakers or sensing terminals of branch nodes collect the current signals so as to confirm the interrelation among all the distribution nodes. The method still has a plurality of hidden dangers, namely the high-frequency characteristic current generated by the signal injection method not only affects the power supply quality of a user, but also leaks through an equivalent capacitance channel of a circuit to the ground to cause the action of the leakage protection circuit breaker. The topology identification also adopts a specific load adding method, and the method adopts the mode that a specific load is put into each distribution branch node, and the branch relation is judged through the detection of current by equipment on the branch. The method still has large uncertainty, and obviously, the branch relation cannot be effectively distinguished by adding specific load on the occasions with large load change and high load in the transformer area.
Disclosure of Invention
In order to solve the technical problem in the prior art, the invention provides a method for identifying the topology of a low-voltage distribution area, which is characterized in that the load characteristics of each branch circuit are judged by utilizing the high-precision measurement capability of a low-voltage circuit breaker or a disconnecting switch arranged at a distribution node of the low-voltage distribution area, and the corresponding relation of the branch circuits is identified according to the characteristics of the load.
The invention specifically comprises the following contents: a method for identifying topology of low-voltage distribution station area comprises
The power distribution station is divided into a primary power distribution layer, a secondary power distribution layer … and an n-level power distribution layer, and low-voltage circuit breakers or isolating switches are arranged on power distribution nodes of the primary power distribution layer, the secondary power distribution layer … and the n-level power distribution layer;
the method comprises the following steps that a fusion terminal is arranged on the side of a low-voltage distribution area, the fusion terminal is communicated with a low-voltage circuit breaker or an isolating switch of the area under the jurisdiction and reads the address and electric quantity data of the fusion terminal;
the fusion terminal judges the hierarchy relation of the low-voltage transformer area through the address of the low-voltage circuit breaker or the isolating switch, and judges the branch relation of the low-voltage transformer area through the electric quantity of the low-voltage circuit breaker or the isolating switch in the same time period.
Further, the step of judging the branch relationship of the low-voltage transformer area by the electric quantity of the low-voltage circuit breaker or the isolating switch in the same time period by the fusion terminal comprises the following steps: and judging the branch relation between the primary distribution layer and the secondary distribution layer and the branch relation between the secondary distribution layer and the tripolar distribution layer … n-1 branch relation between the n-1 level distribution layer and the n-level distribution layer according to the consistent relation of the electric quantities of the low-voltage circuit breakers or the isolating switches at the two endpoints of one branch in the same moment.
Further, the fusion terminal judges the branch relation of the low-voltage transformer area according to the electric quantity of the low-voltage circuit breaker or the disconnecting switch in the same time period, and the method comprises the following steps:
s100, switching data interaction;
s101, judging whether a time correction time interval is reached, and if the time correction time interval is not reached, executing S100;
s102, the fusion terminal carries out time calibration on the low-voltage circuit breaker;
s103, judging whether the timing task is finished or not, and if not, executing S102;
s104, judging whether the topology identification task is executed, and if the topology identification task is not executed, continuing to execute S100;
s105, topology identification data processing is carried out.
Further, the fusion terminal at least uses the electric quantity of one phase of the A, B and C phases of the low-voltage circuit breaker or the isolating switch to judge the connection relation of the low-voltage circuit breaker or the isolating switch; the electric quantity comprises forward active electric quantity, forward reactive electric quantity, reverse active electric quantity and reverse reactive electric quantity.
Further, the fusion terminal judges the hierarchy relationship of the low-voltage transformer area through the address of the low-voltage circuit breaker or the isolating switch, and the method comprises the following steps:
s201, setting address codes for low-voltage circuit breakers or isolating switches, dividing collected address data of the low-voltage circuit breakers or the isolating switches into n sets by a fusion terminal, wherein the n sets respectively represent collected data of circuit breakers in a primary distribution layer, a secondary distribution layer … and an n-level distribution layer;
s202, determining a breaker set needing to judge the branch relation according to the hierarchical relation of the n distribution layers and the models of the breakers in the n sets;
s203, traversing and comparing the data set of which the branch relation needs to be confirmed according to the energy conservation relation;
s204, judging whether the traversal comparison is completed or not, and if not, executing S203;
s205, judging whether the analysis result is valid, if the result is invalid, executing S203;
and S206, forming a topological data set.
Further, the method for setting the address code for the low-voltage circuit breaker or the disconnecting switch of the power distribution layer containing the branch box comprises the following steps: addresses in the same branch box are set in a continuous address setting mode, and addresses of low-voltage circuit breakers or isolating switches of other branch boxes are set in a hop mode; when the convergence terminal reads the breaker data of the hierarchical distribution layer, judging the affiliation relationship of different breakers according to the continuity of breaker addresses; the circuit breaker in the same branch box is judged to be an incoming line switch or an outgoing line switch according to the equipment model.
Further, the low-voltage circuit breaker or the disconnecting switch is set in a coding mode including, but not limited to, a liquid crystal setting, a dial setting and a wireless handheld terminal setting.
Further, when the topological relation of the low-voltage distribution area changes, the fusion terminal updates the topological set, and the method comprises the following steps:
s300, comparing the topological data set calculated this time with the last topological data set;
s301, judging whether the topology is normal or not, and if not, judging that the topology is normal;
s302, if the change occurs, judging that the topology is abnormal;
s303, judging whether the incoming and outgoing line switches can be matched with each other, if so, forming a new topological relation, and if not, executing S304;
s304, forming a set of unmatchable switches;
s305, traversing the electric quantity combination of the switches in the set to form a new electric quantity conservation relation;
and S306, forming a new topological logic according to the combined conservation of the electric quantity of the switch.
Further, the step of determining the topology abnormality in S302 includes: when the electric quantity reported by the incoming line low-voltage circuit breaker or the isolating switch in equal interval time is greater than the electric quantity of the managed outgoing line low-voltage circuit breaker or the isolating switch and exceeds the line loss, the fusion terminal judges that the topological abnormal condition is increased for the power distribution branch circuit.
Further, the step of determining the topology abnormality in S302 includes: when the electric quantity reported by the incoming line low-voltage circuit breaker or the isolating switch within equal interval time is consistent with the electric quantity of the managed outgoing line low-voltage circuit breaker or the isolating switch, but the electric quantity reported by one or more outgoing line switches managed by the incoming line switch is unchanged for a long time, the fusion terminal judges that the topological abnormal condition is the reduction of the power distribution branch circuit.
The invention has the beneficial effects that: and the branch relation is judged by the fusion terminal according to the energy conservation law, and the hierarchical relation of the distribution transformer area is judged according to the equipment address setting. The topology identification method does not increase special equipment for topology identification, does not need personnel to construct and install, can detect the abnormal change of the topology in real time, does not need manual intervention, and is a low-cost and high-reliability topology identification method.
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The following further explains embodiments of the present invention with reference to the drawings.
FIG. 1 is a low-voltage distribution area topological relation diagram of the present invention;
FIG. 2 is a data processing flow chart of the topology identification fusion terminal of the present invention 1;
FIG. 3 is a data processing flow chart of the topology identification fusion terminal of the present invention 2;
fig. 4 is a data processing flow chart of the topology identification fusion terminal of the present invention 3.
Detailed Description
With reference to fig. 1 to 4, the present embodiment discloses a method for identifying topology of a low-voltage distribution substation, which includes the following steps:
divide into three level with the low-voltage distribution station, be primary distribution layer, secondary distribution layer and tertiary distribution layer respectively, wherein, primary distribution layer is including joining in marriage electrical room, box-type substation and JP cabinet (distribution transformer synthesizes switch board), and secondary distribution layer is including the branch box layer, and tertiary distribution layer is including table case layer. The three levels of power distribution nodes are provided with low-voltage intelligent circuit breakers or low-voltage isolating switches;
the low-voltage transformer area fusion terminal is used as side equipment of the power distribution internet of things and is responsible for collecting data of intelligent equipment in the transformer area. The low-voltage intelligent circuit breaker or the low-voltage isolating switch at the low-voltage power distribution node has a high-precision acquisition function, and can acquire and upload data such as voltage, current, power, harmonic waves and electric quantity to the fusion terminal. The fusion terminal reads data of the low-voltage circuit breaker or the disconnecting switch in a communication mode;
the fusion terminal judges the hierarchy relation of the low-voltage transformer area through the address of the low-voltage circuit breaker or the isolating switch, and judges the branch relation of the low-voltage transformer area through the electric quantity of the low-voltage circuit breaker or the isolating switch in the same time period.
The low-voltage transformer area branch relation is judged by the fusion terminal through the electric quantity of the low-voltage circuit breakers or the isolating switches in the same time period mainly through an energy conservation relation, namely the electric quantities of the low-voltage circuit breakers or the isolating switches at two endpoints of one branch are consistent or approximately equal in the same time interval, and the approximate equality means that the electric quantity difference of the low-voltage circuit breakers or the isolating switches is the same as the loss of a line. Specifically, the electric quantity of a circuit breaker of a low-voltage outlet cabinet of one power distribution branch and the electric quantity of an inlet circuit breaker or an isolating switch of a branch box are approximately equal in the same time; the branch box circuit breaker of one distribution branch is approximately equal to the electric quantity of the inlet wire switch of the meter box.
In this embodiment, the fusion terminal determines the branch relationship of the low-voltage transformer area according to the electric quantity of the low-voltage circuit breaker or the disconnecting switch in the same time period, and includes the following steps:
s100, switching data interaction, wherein a fusion terminal periodically reads data of a low-voltage circuit breaker or a disconnecting switch;
s101, judging whether a time correction time interval is reached, and if the time correction time interval is not reached, executing S100; the time interval set in the embodiment is 15 minutes, and the low-voltage circuit breaker freezes locally acquired electric quantity information once every 15 minutes and stores the information in the local;
s102, the fusion terminal carries out time calibration on the low-voltage circuit breaker;
s103, judging whether the timing task is finished or not, and if not, executing S102;
s104, judging whether the topology identification task is executed, and if the topology identification task is not executed, continuing to execute S100;
s105, topology identification data processing is carried out.
The fusion terminal at least uses the electric quantity of one phase of A, B and C phases of the low-voltage circuit breaker or the isolating switch to judge the connection relation of the low-voltage circuit breaker or the isolating switch; the electric quantity comprises forward active electric quantity, forward reactive electric quantity, reverse active electric quantity and reverse reactive electric quantity.
In this embodiment, the method for determining the hierarchical relationship of the low-voltage transformer area by the address of the low-voltage circuit breaker or the disconnecting switch in the fusion terminal includes the following steps:
s201, setting address codes for low-voltage circuit breakers or isolating switches, dividing collected address data of the low-voltage circuit breakers or the isolating switches into 3 sets by a fusion terminal, wherein the 3 sets respectively represent collected data of circuit breakers in a primary distribution layer, a secondary distribution layer and a tertiary distribution layer; according to the topological hierarchical relationship of the low-voltage transformer area, if the installation position of the low-voltage circuit breaker is in a certain hierarchy, a fixed address section is set based on the hierarchy, and the hierarchical relationship of the low-voltage circuit breaker is judged by the fusion terminal according to the fixed address section;
s202, determining a breaker set needing to judge the branch relation according to the hierarchical relation of the n distribution layers and the models of the breakers in the n sets; the corresponding relation between an outgoing line breaker of the low-voltage cabinet and an incoming line breaker or an isolating switch of the branch box is specifically referred to herein; and the corresponding relation between the outgoing line circuit breaker of the branch box and the incoming line circuit breaker of the meter box. The branch relation between the first power distribution level and the second power distribution level and the branch relation between the second power distribution level and the third power distribution level are obtained;
s203, traversing and comparing the data set of which the branch relation needs to be confirmed according to the energy conservation relation; the method specifically means that the electric quantity of a breaker of a low-voltage outlet cabinet of one power distribution branch and the electric quantity of an inlet line breaker or an isolating switch of a branch box are approximately equal in the same moment; the branch box breaker of one power distribution branch is approximately equal to the electric quantity of the inlet wire switch of the meter box;
s204, judging whether the traversal comparison is completed or not, and if not, executing S203;
s205, judging whether the analysis result is valid, if the result is invalid, executing S203;
and S206, forming a topological data set.
As shown in fig. 1, taking a method for setting address codes for low-voltage circuit breakers or disconnectors of a secondary distribution layer as an example, addresses in the same branch box are set in a continuous address setting manner, and addresses of low-voltage circuit breakers or disconnectors of other branch boxes are set in a hop manner, so that the installation levels of the low-voltage circuit breakers or disconnectors and the cabinet body can be judged according to the coded addresses; when the convergence terminal reads the breaker data of the hierarchical distribution layer, judging the affiliation relationship of different breakers according to the continuity of breaker addresses; the circuit breaker in the same branch box is judged to be an incoming line switch or an outgoing line switch according to the equipment model. The low-voltage circuit breaker or disconnecting switch setting coding mode includes but is not limited to liquid crystal setting, dial setting and wireless handheld terminal setting.
In the actual production process, the topological structure of the low-voltage topological platform area is different from the prior topological structure due to the conditions of line data loss, equipment connection relation change, energy non-conservation caused by electricity stealing and line loss abnormality on the line and the like, and the conditions belong to the topological abnormal conditions. According to the energy conservation principle, incoming line energy and outgoing line energy are approximately equal, and under the condition of abnormal topological relation, the energy conservation law is broken, so that topological abnormality can be identified, and the topological structure needs to be updated.
When the topological relation of the low-voltage distribution area changes, the fusion terminal updates the topological set, and the method comprises the following steps:
s300, comparing the topological data set calculated this time with the last topological data set;
s301, judging whether the topology is normal or not, and if not, judging that the topology is normal;
s302, if the change occurs, judging that the topology is abnormal;
s303, judging whether the incoming and outgoing line switches can be matched with each other, if so, forming a new topological relation, and if not, executing S304;
s304, forming a set of unmatchable switches;
s305, traversing the electric quantity combination of the switches in the set to form a new electric quantity conservation relation;
and S306, forming a new topological logic according to the combined conservation of the electric quantity of the switch.
The step of judging the topology abnormality in S302 includes: when the reported electric quantity of the incoming line low-voltage circuit breaker or the isolating switch is greater than the electric quantity of the managed outgoing line low-voltage circuit breaker or the isolating switch within equal interval time and exceeds the line loss, the fusion terminal judges that the topological abnormal condition is increased for the power distribution branch circuit; when the electric quantity reported by the incoming line low-voltage circuit breaker or the isolating switch within equal interval time is consistent with the electric quantity of the managed outgoing line low-voltage circuit breaker or the isolating switch, but the electric quantity reported by one or more outgoing line switches managed by the incoming line switch is unchanged for a long time, the fusion terminal judges that the topological abnormal condition is the reduction of the power distribution branch circuit.
When the topology abnormal situation is identified, the method can update the topology structure in time, and can quickly locate the position where the abnormal situation occurs according to the address of the low-voltage circuit breaker or the isolating switch, thereby facilitating the corresponding operation.
The method for identifying the low-voltage distribution area topology comprises a configuration mode, a communication mode and a calculation method of a low-voltage distribution area fusion terminal device and a low-voltage circuit breaker device with electric quantity calculation capability and communication capability. The low-voltage circuit breaker freezes the electric quantity within a specified time interval and sends the electric quantity to the convergence terminal in a communication mode. The fusion terminal compares the electric quantity of each breaker in the same time period through calculation, and can confirm the branch connection relation of the low-voltage breakers at the two ends of each branch line. According to the grading form of a power distribution system, the low-voltage circuit breakers which are installed in a power distribution room, a JP cabinet, a box-type substation, a branch box and a meter box are respectively configured with address information in different ranges, and a terminal is fused to distinguish the hierarchical relation of the low-voltage circuit breakers in the address range, so that the construction and maintenance cost generated by external equipment or instruments is reduced due to topology identification, the branching relation can be identified more effectively, and the practical effect is good.
In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the present invention. The foregoing description is only a preferred embodiment of the invention, which can be embodied in many different forms than described herein, and therefore the invention is not limited to the specific embodiments disclosed above. And that those skilled in the art may, using the methods and techniques disclosed above, make numerous possible variations and modifications to the disclosed embodiments, or modify equivalents thereof, without departing from the scope of the claimed embodiments. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. A method for identifying topology of a low-voltage distribution area is characterized by comprising the following steps: comprises that
The power distribution station is divided into a primary power distribution layer, a secondary power distribution layer … and an n-level power distribution layer, and low-voltage circuit breakers or isolating switches are arranged on power distribution nodes of the primary power distribution layer, the secondary power distribution layer … and the n-level power distribution layer;
the method comprises the following steps that a fusion terminal is arranged on the side of a low-voltage distribution area, the fusion terminal is communicated with a low-voltage circuit breaker or an isolating switch of the area under the jurisdiction and reads the address and electric quantity data of the fusion terminal;
the fusion terminal judges the hierarchy relation of the low-voltage transformer area through the address of the low-voltage circuit breaker or the isolating switch, and judges the branch relation of the low-voltage transformer area through the electric quantity of the low-voltage circuit breaker or the isolating switch in the same time period.
2. The method of low voltage distribution substation topology identification according to claim 1, characterized in that: the step that the fused terminal judges the branch relation of the low-voltage transformer area through the electric quantity of the low-voltage circuit breaker or the isolating switch in the same time period comprises the following steps: and judging the branch relation between the primary distribution layer and the secondary distribution layer and the branch relation between the secondary distribution layer and the tripolar distribution layer … n-1 branch relation between the n-1 level distribution layer and the n-level distribution layer according to the consistent relation of the electric quantities of the low-voltage circuit breakers or the isolating switches at the two endpoints of one branch in the same moment.
3. The method of low voltage distribution substation topology identification according to claim 1, characterized in that: the method for judging the branch relation of the low-voltage transformer area by the fusion terminal through the electric quantity of the low-voltage circuit breaker or the disconnecting switch in the same time period comprises the following steps:
s100, switching data interaction;
s101, judging whether a time correction time interval is reached, and if the time correction time interval is not reached, executing S100;
s102, the fusion terminal carries out time calibration on the low-voltage circuit breaker;
s103, judging whether the timing task is finished or not, and if not, executing S102;
s104, judging whether the topology identification task is executed, and if the topology identification task is not executed, continuing to execute S100;
s105, topology identification data processing is carried out.
4. The method of low voltage distribution substation topology identification according to claim 1, characterized in that: the fusion terminal at least uses the electric quantity of one phase of A, B and C phases of the low-voltage circuit breaker or the isolating switch to judge the connection relation of the low-voltage circuit breaker or the isolating switch; the electric quantity comprises forward active electric quantity, forward reactive electric quantity, reverse active electric quantity and reverse reactive electric quantity.
5. The method of low voltage distribution substation topology identification according to claim 1, characterized in that: the fusion terminal judges the hierarchy relationship of the low-voltage transformer area through the address of the low-voltage circuit breaker or the isolating switch, and the method comprises the following steps:
s201, setting address codes for low-voltage circuit breakers or isolating switches, dividing collected address data of the low-voltage circuit breakers or the isolating switches into n sets by a fusion terminal, wherein the n sets respectively represent collected data of circuit breakers in a primary distribution layer, a secondary distribution layer … and an n-level distribution layer;
s202, determining a breaker set needing to judge the branch relation according to the hierarchical relation of the n distribution layers and the models of the breakers in the n sets;
s203, traversing and comparing the data set of which the branch relation needs to be confirmed according to the energy conservation relation;
s204, judging whether the traversal comparison is completed or not, and if not, executing S203;
s205, judging whether the analysis result is valid, if the result is invalid, executing S203;
and S206, forming a topological data set.
6. The method of low voltage distribution substation topology identification according to claim 1, characterized in that: the method for setting the address code of the low-voltage circuit breaker or the disconnecting switch for the power distribution layer containing the branch box comprises the following steps: addresses in the same branch box are set in a continuous address setting mode, and addresses of low-voltage circuit breakers or isolating switches of other branch boxes are set in a hop mode; when the convergence terminal reads the breaker data of the hierarchical distribution layer, judging the affiliation relationship of different breakers according to the continuity of breaker addresses; the circuit breaker in the same branch box is judged to be an incoming line switch or an outgoing line switch according to the equipment model.
7. The method of low voltage distribution substation topology identification according to claim 6, characterized in that: the low-voltage circuit breaker or disconnecting switch setting coding mode includes but is not limited to liquid crystal setting, dial setting and wireless handheld terminal setting.
8. The method of low voltage distribution substation topology identification according to claim 1, characterized in that: when the topological relation of the low-voltage distribution area changes, the fusion terminal updates the topological set, and the method comprises the following steps:
s300, comparing the topological data set calculated this time with the last topological data set;
s301, judging whether the topology is normal or not, and if not, judging that the topology is normal;
s302, if the change occurs, judging that the topology is abnormal;
s303, judging whether the incoming and outgoing line switches can be matched with each other, if so, forming a new topological relation, and if not, executing S304;
s304, forming a set of unmatchable switches;
s305, traversing the electric quantity combination of the switches in the set to form a new electric quantity conservation relation;
and S306, forming a new topological logic according to the combined conservation of the electric quantity of the switch.
9. The method of low voltage distribution substation topology identification according to claim 8, characterized in that: the step of judging the topology abnormality in S302 includes: when the electric quantity reported by the incoming line low-voltage circuit breaker or the isolating switch in equal interval time is greater than the electric quantity of the managed outgoing line low-voltage circuit breaker or the isolating switch and exceeds the line loss, the fusion terminal judges that the topological abnormal condition is increased for the power distribution branch circuit.
10. The method of low voltage distribution substation topology identification according to claim 8, characterized in that: the step of judging the topology abnormality in S302 includes: when the electric quantity reported by the incoming line low-voltage circuit breaker or the isolating switch within equal interval time is consistent with the electric quantity of the managed outgoing line low-voltage circuit breaker or the isolating switch, but the electric quantity reported by one or more outgoing line switches managed by the incoming line switch is unchanged for a long time, the fusion terminal judges that the topological abnormal condition is the reduction of the power distribution branch circuit.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112787402A (en) * | 2021-01-21 | 2021-05-11 | 中电华瑞技术有限公司 | Transformer area switch physical topology identification method based on power grid full data acquisition |
| CN112910091A (en) * | 2021-02-02 | 2021-06-04 | 江苏大全凯帆开关股份有限公司 | Method for identifying topology of low-voltage distribution station area |
| CN112946385A (en) * | 2021-01-29 | 2021-06-11 | 国网浙江省电力有限公司营销服务中心 | Transformer area power failure point positioning method based on circuit breaker |
| CN112968520A (en) * | 2021-01-29 | 2021-06-15 | 国网浙江省电力有限公司营销服务中心 | Transformer area topology identification method based on transformer area key node characteristic current information |
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|---|---|---|---|---|
| CN112787402A (en) * | 2021-01-21 | 2021-05-11 | 中电华瑞技术有限公司 | Transformer area switch physical topology identification method based on power grid full data acquisition |
| CN113159488A (en) * | 2021-01-27 | 2021-07-23 | 国网江苏省电力有限公司苏州供电分公司 | Low-voltage distribution area topology identification method |
| CN112946385A (en) * | 2021-01-29 | 2021-06-11 | 国网浙江省电力有限公司营销服务中心 | Transformer area power failure point positioning method based on circuit breaker |
| CN112968520A (en) * | 2021-01-29 | 2021-06-15 | 国网浙江省电力有限公司营销服务中心 | Transformer area topology identification method based on transformer area key node characteristic current information |
| CN112910091A (en) * | 2021-02-02 | 2021-06-04 | 江苏大全凯帆开关股份有限公司 | Method for identifying topology of low-voltage distribution station area |
| CN113258672A (en) * | 2021-05-11 | 2021-08-13 | 国网安徽省电力有限公司信息通信分公司 | Intelligent Internet of things monitoring method and system for power distribution station |
| CN113258672B (en) * | 2021-05-11 | 2024-03-29 | 国网安徽省电力有限公司信息通信分公司 | Intelligent Internet of things monitoring method and system for power distribution area |
| CN114243900A (en) * | 2021-11-12 | 2022-03-25 | 中国电力科学研究院有限公司 | Low-voltage intelligent circuit breaker, intelligent fusion terminal, master station and access method and system |
| CN114297811B (en) * | 2021-12-31 | 2023-09-12 | 烟台东方威思顿电气有限公司 | Low-voltage area topology identification method based on constraint multi-objective optimization |
| CN114297811A (en) * | 2021-12-31 | 2022-04-08 | 烟台东方威思顿电气有限公司 | Low-voltage transformer area topology identification method based on constrained multi-objective optimization |
| CN114726740A (en) * | 2022-06-09 | 2022-07-08 | 国网浙江省电力有限公司宁波供电公司 | Method and system for identifying platform area topology and intelligent fusion terminal |
| CN114726740B (en) * | 2022-06-09 | 2022-09-02 | 国网浙江省电力有限公司宁波供电公司 | Method and system for identifying platform area topology and intelligent fusion terminal |
| CN115207909A (en) * | 2022-07-20 | 2022-10-18 | 北京三圣凯瑞科技有限公司 | Method, device, equipment and storage medium for identifying platform area topology |
| CN115207909B (en) * | 2022-07-20 | 2023-09-15 | 北京三圣凯瑞科技有限公司 | Method, device, equipment and storage medium for identifying topology of platform area |
| CN116937488A (en) * | 2023-09-19 | 2023-10-24 | 青岛鼎信通讯科技有限公司 | Intelligent circuit breaker system and fault processing method for power distribution network |
| CN118017506A (en) * | 2024-04-09 | 2024-05-10 | 云南电网有限责任公司 | Low-voltage area topology identification method and system |
| CN118017506B (en) * | 2024-04-09 | 2024-06-18 | 云南电网有限责任公司 | Low-voltage area topology identification method and system |
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