CN111174738B - Distance determination method, device, storage medium, processor and power distribution system - Google Patents
Distance determination method, device, storage medium, processor and power distribution system Download PDFInfo
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- CN111174738B CN111174738B CN201911419902.8A CN201911419902A CN111174738B CN 111174738 B CN111174738 B CN 111174738B CN 201911419902 A CN201911419902 A CN 201911419902A CN 111174738 B CN111174738 B CN 111174738B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves
Abstract
The invention discloses a distance determination method, a distance determination device, a storage medium, a processor and a power distribution system. Wherein, the method comprises the following steps: receiving at the second node a mechanical wave from the first node, wherein the mechanical wave is emitted by the first node; calculating the propagation time from the sending of the mechanical wave from the first node to the receiving of the mechanical wave by the second node; the distance between the first node and the second node is calculated from the propagation time and the propagation velocity of the mechanical wave. The invention solves the technical problem that the node distance in the power distribution network cannot be identified.
Description
Technical Field
The invention relates to the field of electric power, in particular to a distance determination method, a distance determination device, a storage medium, a processor and a power distribution system.
Background
The topology identification of the power distribution area is a key basic technology for supporting the intellectualization of the low-voltage power distribution network, and mainly adopts a signal injection mode, an electric quantity data analysis mode and a power line carrier communication mode.
Through the signal injection mode, although the user variable relation and the branch relation can be identified, the topological distance is identified; the speed is low, the accuracy is poor and the topological distance cannot be identified through the analysis and identification of the electric quantity data; the power line carrier communication identification mode has the problems that the branch relation identification difficulty is high, and the distance cannot be identified.
Aiming at the problem that the node distance in the power distribution network cannot be identified, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a distance determination method, a distance determination device, a storage medium, a processor and a power distribution system, and at least solves the technical problem that the distance of nodes in a power distribution network cannot be identified.
According to an aspect of an embodiment of the present invention, there is provided a distance determining method including: receiving, at a second node, a mechanical wave from a first node, wherein the mechanical wave is emitted by the first node; calculating a propagation time from the emission of a mechanical wave from the first node to the reception of the mechanical wave by the second node; calculating a distance between the first node and the second node from the propagation time and the propagation velocity of the mechanical wave.
Further, the method further comprises: acquiring distances among all nodes of a power distribution network, wherein the distances among the nodes are calculated according to the propagation time of mechanical waves; and obtaining the topological relation of the power distribution network according to the distances among all the nodes.
Further, the node comprises: a switching device.
Further, the mechanical wave is received and/or transmitted by a mechanical wave receiving and transmitting device provided in the first node and the second node.
According to another aspect of the embodiments of the present invention, there is also provided a distance determining apparatus including: a receiving unit, configured to receive, at a second node, a mechanical wave from a first node, where the mechanical wave is emitted by the first node; a first calculation unit configured to calculate a propagation time from when the first node transmits a mechanical wave to when the second node receives the mechanical wave; a second calculation unit configured to calculate a distance between the first node and the second node from the propagation time and a propagation velocity of the mechanical wave.
Further, the apparatus further comprises: the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring the distances among all nodes of the power distribution network, and the distances among the nodes are calculated according to the propagation time of mechanical waves; and the determining unit is used for obtaining the topological relation of the power distribution network according to the distances among all the nodes.
Further, the node comprises: a switching device.
There is also provided, in accordance with another aspect of an embodiment of the present invention, a power distribution system, including: a node; mechanical wave receiving and transmitting means, mounted on each node, for receiving and/or transmitting mechanical waves; and the terminal is connected with the mechanical wave receiving and transmitting device and used for acquiring the propagation time of the mechanical wave between the two nodes and calculating the distance between the two nodes according to the propagation time and the propagation speed of the mechanical wave.
According to another aspect of the embodiments of the present invention, there is also provided a storage medium, where the storage medium includes a stored program, and when the program runs, a device on which the storage medium is located is controlled to execute the distance determining method described above.
According to another aspect of the embodiments of the present invention, there is further provided a processor, configured to run a program, where the program executes the distance determining method described above.
In the embodiment of the invention, the mechanical wave from the first node is received at the second node, the propagation time of the mechanical wave propagating between the first node and the second node is determined, and then the distance between the first node and the second node can be calculated according to the propagation time and the propagation speed of the mechanical wave, so that the purpose of determining the distance between the first node and the second node is achieved, the technical effect of identifying the node distance in the power distribution network is realized, and the technical problem that the node distance in the power distribution network cannot be identified is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of a distance determination method according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a mechanical wave topology identification module according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a distance determining apparatus according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a power distribution system in accordance with an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In accordance with an embodiment of the present invention, there is provided a distance determination method embodiment, it is noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in an order different than here.
Fig. 1 is a flowchart of a distance determining method according to an embodiment of the present invention, as shown in fig. 1, the method including the steps of:
step S102, receiving mechanical waves from a first node at a second node, wherein the mechanical waves are emitted by the first node;
step S104, calculating the propagation time from the first node sending the mechanical wave to the second node receiving the mechanical wave;
step S106, calculating the distance between the first node and the second node according to the propagation time and the propagation speed of the mechanical wave.
In the embodiment of the invention, the mechanical wave from the first node is received at the second node, the propagation time of the mechanical wave propagating between the first node and the second node is determined, and then the distance between the first node and the second node can be calculated according to the propagation time and the propagation speed of the mechanical wave, so that the purpose of determining the distance between the first node and the second node is achieved, the technical effect of identifying the node distance in the power distribution network is realized, and the technical problem that the node distance in the power distribution network cannot be identified is solved.
It should be noted that the distance determining method provided by the present invention can be applied in a power distribution network to determine the distance between nodes in the power distribution network.
Optionally, the nodes in the power distribution network may include a first node and a second node.
Alternatively, the nodes of the nodes in the distribution network may be locations of important devices in the distribution network, such as switches, switchgears, transformers, etc.
As an alternative embodiment, the node comprises: a switching device, wherein the nodes include a first node and a second node.
Optionally, the node is a switching device in the power distribution network.
Alternatively, the second node may be a plurality of nodes, adjacent to the first node in the power distribution network.
Alternatively, the mechanical wave receiving and transmitting devices may be installed at both ends of the same node, respectively.
For example, in the case where the first node and the second node are switching devices, the mechanical wave receiving and transmitting devices may be installed at the upper and lower ports of the switch device, respectively.
It should be noted that the mechanical wave receiving and transmitting device is used for receiving and/or transmitting mechanical waves.
Alternatively, each of the mechanical wave receiving and transmitting devices may have a function of receiving and transmitting mechanical waves; it is also possible to have only one of the functions of receiving or transmitting mechanical waves.
Alternatively, the mechanical wave receiving and transmitting means for transmitting mechanical waves may be provided at the first node, and the mechanical wave receiving and transmitting means for receiving mechanical waves may be provided at the second node.
For example, the mechanical wave receiving and transmitting device provided at the switch lower port of the corresponding switchgear of the first node may transmit only the machine; the second node corresponds to a mechanical wave receiving and transmitting device arranged at the switch upper port of the switch device, which can only receive the machine.
In the scheme provided in step S102, the mechanical wave refers to propagation of mechanical vibration in a medium, and is generated by the mechanical vibration, and propagation speeds in different media are also different.
The propagation velocity of the mechanical wave is determined by the medium, and the propagation velocity in the same medium is fixed.
Alternatively, one skilled in the art can obtain the propagation velocity of the mechanical wave in different media by querying.
Alternatively, the first node and the second node may be connected by a wire, and the mechanical wave may propagate on the wire between the first node and the second node.
Alternatively, the propagation speed of the mechanical wave may be determined by the material of the wire.
It should be noted that the wires, which are typically made of copper or aluminum, or silver wires, are used to conduct the current in the grid.
Optionally, the speed of mechanical waves propagating in the wire made of the material can be queried according to the material of the wire; the wire can also be tested in advance to detect the propagation speed of the mechanical wave in the wire.
In the scheme provided in step S104, the first node and the second node may be connected to each other through the intelligent power distribution terminal, and after the first node transmits the mechanical wave, the transmission time of the mechanical wave may be uploaded to the intelligent power distribution terminal; and after the second node receives the mechanical wave, the receiving time of the mechanical wave can be uploaded to the intelligent power distribution terminal, and then the intelligent power distribution terminal can determine the propagation time of the mechanical wave from the first node to the second node according to the sending time and the receiving time of the mechanical wave.
Alternatively, the intelligent power distribution terminal may be connected to mechanical wave receiving and transmitting devices installed on different nodes. For example, the terminal may be connected to mechanical wave receiving and transmitting devices mounted on the first node and the second node, respectively.
In the scheme provided in step S106, the distance between the first node and the second node may be determined according to the product between the propagation time and the propagation speed of the mechanical wave.
Optionally, the distance between all nodes in the power distribution network may be determined according to the manner of determining the distance between the first node and the second node.
As an alternative embodiment, the method further comprises: acquiring distances among all nodes of a power distribution network, wherein the distances among the nodes are calculated according to the propagation time of mechanical waves; and obtaining the topological relation of the power distribution network according to the distances among all the nodes.
In the embodiment of the invention, the topological relation of the power distribution network can be determined according to the distances among the nodes by acquiring the distances among all the nodes of the power distribution network.
Alternatively, it may be determined that a plurality of nodes having the same or similar distances are at the same level in the topological relationship.
For example, switching devices within the same branch box are determined.
Alternatively, other nodes directly connected to a certain node may be determined according to the propagation path of the mechanical wave.
For example, in a case where the first node is a first device, the second node is a second device directly connected to the first device through a wire, the second device may receive a mechanical wave transmitted by the first device, calculate a distance between the first device and the second device, determine the second device connected to the first device in the power distribution network, further use the second device as the first node, and further determine a third device connected to the second device through a wire, thereby determining a topological relationship of each device in the power distribution network.
It should be noted that, in the above example, the devices in the power distribution network may be switching devices, that is, the first device is a first switching device, the second device is a second switching device, and the third device is a third switching device.
As an alternative embodiment, the mechanical waves are received and/or transmitted by mechanical wave receiving and transmitting devices provided in the first node and the second node.
The invention also provides a preferred embodiment, which provides a mechanical wave topology identification module and an identification method thereof.
According to the invention, the mechanical wave receiving and transmitting device is additionally arranged at the important nodes of the switch and the circuit, so that the distance between the nodes is measured, and the topology identification of the low-voltage distribution network is completed through algorithm analysis.
Fig. 2 is a schematic diagram of a mechanical wave topology identification module according to an embodiment of the present invention, and as shown in fig. 2, mechanical wave transceivers are installed at an upper switch port and a lower switch port of each switch device, and are connected to an intelligent power distribution terminal, and the intelligent power distribution terminal performs calculation, and the distance information between two switch devices can be obtained by multiplying propagation speed of a mechanical wave in a wire of the connected switch device by propagation time.
Optionally, after the intelligent distribution terminal obtains the information, the branch relation of the switching devices can be further combed according to the distance information between the switching devices.
Optionally, the branching relationship of the comb switch device comprises: combing is started from each outgoing line switch device of the transformer, the switch devices with basically the same distance are determined to be positioned in the same branch box, so that the switch branch boxes and the switch devices thereof carried by different outgoing line switch devices are found, and the next-stage switch device is further combed by the method.
The technical scheme provided by the invention can be applied to a low-voltage distribution network to realize low-voltage topology identification and key node distance measurement.
The technical scheme provided by the invention can be applied to a low-voltage distribution environment and can also be used as a reference in a high-voltage distribution environment.
According to still another embodiment of the present invention, there is also provided a storage medium including a stored program, wherein the program executes the distance determination method of any one of the above.
According to yet another embodiment of the present invention, there is further provided a processor for executing a program, wherein the program executes the distance determining method of any one of the above.
According to an embodiment of the present invention, an embodiment of a distance determining apparatus is further provided, and it should be noted that the distance determining apparatus may be configured to execute the distance determining method in the embodiment of the present invention, and the distance determining method in the embodiment of the present invention may be executed in the distance determining apparatus.
Fig. 3 is a schematic diagram of a distance determining apparatus according to an embodiment of the present invention, as shown in fig. 3, the apparatus may include:
a receiving unit 32, configured to receive, at the second node, a mechanical wave from the first node, where the mechanical wave is emitted by the first node; a first calculation unit 34 for calculating a propagation time from the emission of the mechanical wave from the first node to the reception of the mechanical wave at the second node; a second calculation unit 36 for calculating the distance between the first node and the second node from the propagation time and the propagation velocity of the mechanical wave.
It should be noted that the receiving unit 32 in this embodiment may be configured to execute step S102 in this embodiment, the receiving unit 32 in this embodiment may be configured to execute step S104 in this embodiment, and the second calculating unit 36 in this embodiment may be configured to execute step S106 in this embodiment. The modules are the same as the corresponding steps in the realized examples and application scenarios, but are not limited to the disclosure of the above embodiments.
In the embodiment of the invention, the mechanical wave from the first node is received at the second node, the propagation time of the mechanical wave propagating between the first node and the second node is determined, and then the distance between the first node and the second node can be calculated according to the propagation time and the propagation speed of the mechanical wave, so that the purpose of determining the distance between the first node and the second node is achieved, the technical effect of identifying the node distance in the power distribution network is realized, and the technical problem that the node distance in the power distribution network cannot be identified is solved.
As an alternative embodiment, the apparatus further comprises: the acquisition unit is used for acquiring the distances among all nodes of the power distribution network, wherein the distances among the nodes are calculated according to the propagation time of the mechanical wave; and the determining unit is used for obtaining the topological relation of the power distribution network according to the distances among all the nodes.
As an alternative embodiment, the node comprises: a switching device.
As an alternative embodiment, the mechanical waves are received and/or transmitted by mechanical wave receiving and transmitting devices provided in the first node and the second node.
Fig. 4 is a schematic diagram of a power distribution system according to an embodiment of the invention, which, as shown in fig. 4, may include: a node 41; a mechanical wave receiving and transmitting device 43 installed at each node for receiving and/or transmitting mechanical waves; and a terminal 45 connected to the mechanical wave receiving and transmitting device, for acquiring the propagation time of the mechanical wave between the two nodes, and calculating the distance between the two nodes according to the propagation time and the propagation speed of the mechanical wave.
In the embodiment of the invention, the mechanical wave receiving and transmitting device is arranged on each node, so that the mechanical wave can be transmitted between the nodes, the transmission time of the mechanical wave between the two nodes can be acquired, the transmission distance between the nodes can be calculated according to the transmission time and the transmission speed of the mechanical wave, the purpose of determining the distance between the nodes is achieved, the technical effect of identifying the node distance in the power distribution network is realized, and the technical problem that the node distance in the power distribution network cannot be identified is solved.
Alternatively, the node may be a switching device, and the mechanical wave receiving and transmitting device may be respectively installed at both ends of the same node, for example, the mechanical wave receiving and transmitting device may be respectively installed at a switch upper port and a switch lower port of the switching device (or the node).
Optionally, the terminal may be an intelligent power distribution terminal, or may be other terminal type devices.
Alternatively, the terminal may be connected to mechanical wave receiving and transmitting devices installed on different nodes. For example, the terminal may be connected to mechanical wave receiving and transmitting devices mounted on the first node and the second node, respectively.
In the above embodiment of the present invention, the nodes include the first node and the second node, and the mechanical wave receiving and transmitting devices respectively disposed on the first node and the second node can enable the mechanical wave to propagate between the first node and the second node, and the terminal can be connected to the mechanical wave receiving and transmitting device mounted on the first node and the mechanical wave receiving and transmitting device mounted on the second node, respectively, and can determine the propagation time of the mechanical wave propagating between the first node and the second node, and then according to the propagation time and the propagation speed of the mechanical wave, can calculate the distance between the first node and the second node, thereby achieving the purpose of determining the distance between the first node and the second node, achieving the technical effect of identifying the node distance in the power distribution network, and further solving the technical problem that the node distance in the power distribution network cannot be identified.
The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technical content can be implemented in other manners. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the principle of the present invention, and these modifications and amendments should also be considered as the protection scope of the present invention.
Claims (6)
1. A method of distance determination, comprising:
receiving a mechanical wave from a first node at a second node, wherein the mechanical wave is emitted by the first node, the first node and the second node are connected by a wire, and the mechanical wave propagates on the wire between the first node and the second node;
calculating a propagation time from the emission of a mechanical wave from the first node to the reception of the mechanical wave by the second node;
calculating a distance between the first node and the second node from the propagation time and a propagation velocity of the mechanical wave;
wherein the method further comprises:
acquiring distances among all nodes of a power distribution network, wherein the distances among the nodes are calculated according to the propagation time of mechanical waves;
obtaining the topological relation of the power distribution network according to the distances among all the nodes;
the mechanical wave receiving and transmitting devices are respectively arranged at two ends of the same node;
wherein the node comprises: and the switch upper port and the switch lower port of the switch equipment are respectively provided with a mechanical wave receiving and transmitting device.
2. The method according to claim 1, wherein the mechanical waves are received and/or transmitted by mechanical wave receiving and transmitting means provided in the first node and the second node.
3. A distance determining apparatus, comprising:
the receiving unit is used for receiving a mechanical wave from a first node at a second node, wherein the mechanical wave is emitted by the first node, the first node is connected with the second node through a wire, and the mechanical wave propagates on the wire between the first node and the second node;
a first calculation unit configured to calculate a propagation time from when the first node transmits a mechanical wave to when the second node receives the mechanical wave;
a second calculation unit configured to calculate a distance between the first node and the second node from the propagation time and a propagation velocity of the mechanical wave;
wherein the apparatus further comprises:
the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring the distances among all nodes of the power distribution network, and the distances among the nodes are calculated according to the propagation time of mechanical waves;
the determining unit is used for obtaining the topological relation of the power distribution network according to the distances among all the nodes;
the mechanical wave receiving and transmitting devices are respectively arranged at two ends of the same node;
wherein the node comprises: and the switch upper port and the switch lower port of the switch equipment are respectively provided with a mechanical wave receiving and transmitting device.
4. An electrical distribution system, comprising:
the node comprises a first node and a second node, wherein the first node is connected with the second node through a conducting wire, and mechanical waves propagate on the conducting wire between the first node and the second node;
mechanical wave receiving and transmitting means, mounted on each node, for receiving and/or transmitting mechanical waves;
the terminal is connected with the mechanical wave receiving and sending device and used for acquiring the propagation time of the mechanical wave between two nodes and calculating the distance between the two nodes according to the propagation time and the propagation speed of the mechanical wave;
acquiring distances among all nodes of a power distribution network, wherein the distances among the nodes are calculated according to the propagation time of mechanical waves; obtaining the topological relation of the power distribution network according to the distances among all the nodes;
the mechanical wave receiving and transmitting devices are respectively arranged at two ends of the same node;
the node comprises: and the switch equipment is provided with a mechanical wave receiving and transmitting device at the upper opening and the lower opening of the switch respectively.
5. A storage medium characterized in that the storage medium includes a stored program, wherein the program executes the distance determination method according to claim 1 or 2.
6. A processor for running a program, wherein the program is run to perform the distance determination method of claim 1 or 2.
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