CN211293944U - Distribution network topology automatic sequencing sensor terminal, background terminal and system - Google Patents
Distribution network topology automatic sequencing sensor terminal, background terminal and system Download PDFInfo
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- CN211293944U CN211293944U CN202020200924.7U CN202020200924U CN211293944U CN 211293944 U CN211293944 U CN 211293944U CN 202020200924 U CN202020200924 U CN 202020200924U CN 211293944 U CN211293944 U CN 211293944U
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Abstract
The utility model provides a distribution network topology automatic sequencing sensor terminal, backstage terminal and system. The sensor terminal includes: the current signal induction coil is used for acquiring positive zero crossing point time information and current amplitude information of an alternating current signal on a power distribution network on an installation site; the GNSS module is used for acquiring time reference information and geographical position information of the distribution network topology automatic sequencing sensor terminal; the single chip microcomputer is connected with the current signal induction coil and the GNSS module, and acquires the time reference information and the geographical position information acquired by the GNSS module through connection with the GNSS module; acquiring positive zero-crossing point time information and current amplitude information of the current signal through connection with the current signal induction coil; obtaining time sequence phase information of the current signal through comparison of the positive zero crossing point time and a time reference; and acquiring an attribution substation, an attribution bus and an attribution outgoing line of the line according to the time sequence phase information and the current amplitude information.
Description
Technical Field
The utility model relates to a distribution network automation technical field especially relates to a distribution network topology automatic sequencing sensor terminal, backstage terminal and system.
Background
And the distribution network topology sequencing is to mark the attributive substation, the attributive bus and the line name of each outgoing line of each substation on a distribution network topological graph. The topological sorting of the power distribution network is divided into an offline manual method and an online automatic generation method.
The manual method is to manually measure and query the longitude and latitude, the attribution transformer substation, the attribution bus and the line name of each line key point, and mark the longitude and latitude, the attribution transformer substation, the attribution bus and the line name on a topological graph of the power distribution network. The automatic generation method is characterized in that a sensor terminal is installed at each key point of a line, the sensor collects line current and longitude and latitude of the point and transmits information to a background terminal, and the background terminal calculates the topological sorting of the power distribution network through an algorithm.
The manual method is adopted for sequencing, so that the operation efficiency is low. If an automatic generation method is adopted, the problem that the attributions of the transformer substation and the bus of the sensor terminal are difficult to determine generally exists, and the automatic sequencing efficiency is adversely affected.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a distribution network topology automatic sequencing sensor terminal, backstage terminal and system can be accurate, the sequencing of distribution network sensing terminal is accomplished to the efficient.
In order to solve the technical problem, the utility model provides a distribution network topology automatic sequencing sensor terminal, sensor terminal includes: the current signal induction coil is used for acquiring positive zero crossing point time information and current amplitude information of an alternating current signal on a power distribution network on an installation site; the GNSS module is used for acquiring time reference information and geographical position information of the distribution network topology automatic sequencing sensor terminal; the single chip microcomputer is connected with the current signal induction coil and the GNSS module, and acquires the time reference information and the geographic position acquired by the GNSS module through connection with the GNSS module; acquiring positive zero-crossing point time information and current amplitude information of the current signal through connection with the current signal induction coil; obtaining time sequence phase information of the current signal through comparison of the positive zero crossing time and a time reference; and acquiring an attribution substation, an attribution bus and an attribution outgoing line of the line according to the time sequence phase information and the current amplitude information. And the communication module is connected to the singlechip and transmits the time sequence phase information, the current amplitude information and the geographical position information to the power distribution network topology automatic sequencing background terminal.
In some embodiments, a communication module comprises: a wireless communication module, or a mobile GPRS module.
In some embodiments, the wireless communication module is configured to automatically sequence communication between the sensor terminals over the ad hoc network according to different power distribution network topologies in a scenario where a distance between the different sensor terminals is less than 100 meters.
In some embodiments, the ad hoc network distinguishes between different communication links by way of frequency division multiplexing.
In some embodiments, the mobile GPRS module is configured to perform data communication with the power distribution network topology automatic sorting background terminal in a scenario where a distance between different power distribution network topology automatic sorting sensor terminals is greater than 100 meters.
In some embodiments, the single-chip determines timing phase information of the ac signal on the line from the 1PPS signal.
In some embodiments, the 1PPS signal is transmitted by the GNSS module to the single chip microcomputer.
In some embodiments, further comprising: and the energy extraction coil is used for extracting electric energy from the circuit and supplementing the electric energy for the lithium battery by using the extracted electric energy.
Furthermore, the utility model also provides a distribution network topology automatic sequencing backstage terminal, backstage terminal includes: the background end mobile GPRS module is used for acquiring time sequence phase information, current amplitude information and geographical position information uploaded by the distribution network topology automatic sequencing sensor terminals, and judging an attributive substation, an attributive bus and an attributive outgoing line of each distribution network topology automatic sequencing sensor terminal according to the time sequence phase information, the current amplitude information and the geographical position information of each distribution network topology automatic sequencing sensor terminal; and the server is connected to the mobile GPRS module and automatically sorts the distribution network topology automatic sorting sensor terminals according to the attributive substation, the attributive bus and the attributive outgoing line of each distribution network topology automatic sorting sensor terminal.
Furthermore, the utility model also provides a distribution network topology automatic sequencing system, the system includes: the system comprises a plurality of power distribution network topology automatic sequencing sensor terminals and at least one power distribution network topology automatic sequencing background terminal.
After adopting such design, the utility model discloses following advantage has at least:
the utility model discloses can acquire on line in real time alternating current signal's chronogenesis phase information, current amplitude information to and sensing terminal's geographical position information, judge the transformer substation of each sensor, the generating line of affiliation and the line of affiliation is synthesized according to foretell chronogenesis phase information, current amplitude information and geographical position information again, thereby automatic generation distribution network topology is arranged in a sequence, has improved the accuracy of topology sequence, reduces the manual work intensity.
Drawings
The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clear, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.
Fig. 1 is a schematic diagram of a sensor terminal according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a current sampling value and a timing phase according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a background terminal according to an embodiment of the present invention.
Description of reference numerals:
1 energy extraction coil 2 power extraction module
3 lithium battery 4 current signal induction coil
5 singlechip 6 wireless communication module
7 sensor terminal mobile GPRS module 8 GNSS module
11 server 12 background end mobile GPRS module
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
The utility model aims at automatically, generate distribution network topology sequencing, mark the affiliation transformer substation, the bus that belongs to, the affiliation outgoing line of this circuit promptly on all circuits of distribution network automatically. The topological sorting can be automatically changed when the line is increased or decreased.
The utility model discloses a two parts: sensor terminal and backstage terminal. The sensor terminals are installed at the critical points of the line, i.e. at the branches and at the beginning and end of the line. The structure of the sensor terminal is shown in fig. 1.
Referring to fig. 1, the energy extraction coil 1 is an iron-based nanocrystalline iron core coil, with 100 turns, and is used for extracting energy from power line current.
And the power extraction module 2 extracts energy from the energy extraction coil 1 and charges the battery 3.
The lithium battery 3 is 18650 in model and has a rated power supply voltage of 3.7V.
The current signal induction coil 4 is an iron-based nanocrystalline iron core coil, 1200 turns, and is used as a current transformer for sampling current in a power line.
The single chip microcomputer 5 is provided with a double-serial-port 12-bit AD single chip microcomputer, an interrupt source outside the single chip microcomputer is connected with a 1PPS signal of the GNSS module 8 and receives pulse per second, and TXD, RXD and GND of one serial port are connected with the GNSS module 8 and receive the longitude and latitude of the sensor point. TXD, RXD and GND of the other serial port are connected with the mobile GPRS module 7 and the wireless communication module 6 in parallel, the mobile GPRS module 7 and the wireless communication module 6 are selected from one to another, only one module can work at the same time, the mobile GPRS module 7 is used when the sensor installation density is large and the distance is long, and the wireless communication module 6 is used when the sensor installation density is small and the distance is short. The singlechip 5 sends the current sampling value and the time sequence phase to the background terminal at regular time. The transmission information is shown in fig. 2.
And the wireless communication module 6 adopts a wireless self-organizing network module and communicates with the background terminal in a relay mode.
And the mobile GPRS module 7 is used for realizing communication with the background terminal. The mobile GPRS module 7 is used when the sensor mounting density is large and the distance is long, and the wireless communication module 6 is used when the sensor mounting density is small and the distance is short.
And the GNSS module 8 outputs 1PPS to the singlechip 5 and is used for calculating the phase of the 1PPS and the current of the power line. And sending the longitude and latitude of the sensor point to the singlechip.
The structure of the background terminal is shown in fig. 3. With reference to figure 3 of the drawings,
and the server 11 completes the data collection and topological sorting algorithm. TXD, RXD and GND are connected with the background terminal mobile GPRS module 12.
And moving the GPRS module 12 to finish communication with the sensor terminal.
It needs to be emphasized that the time sequence phase is the key of the utility model, and with the time sequence phase, the sum of the current vectors of all branches can be calculated, and the line attribution transformer substation, attribution bus and attribution outgoing line can be judged;
the frequency division channel is the key of the utility model, the frequency division channel is provided, the self-organizing network between the upper route and the lower route of the uniform frequency is mutually independent and not interfered with the communication system of the outgoing line channel nearby, and the self verification and the self management of the current phase and the vector information of each branch node in each block are possible;
and carrying out network-wide synchronous sampling under the control of 1 PPS. The 1PPS signal is a pulse-per-second signal, which is characterized by a period of one second, i.e., one pulse per second, and is used to determine when to acquire the timing phase.
The above description is only for the preferred embodiment of the present invention, and not intended to limit the present invention in any way, and those skilled in the art can make various modifications, equivalent changes and modifications using the above-described technical content, all of which fall within the scope of the present invention.
Claims (10)
1. The utility model provides a distribution network topology automatic sequencing sensor terminal which characterized in that includes:
the current signal induction coil is used for acquiring positive zero crossing point time information and current amplitude information of an alternating current signal on a power distribution network on an installation site;
the GNSS module is used for acquiring time reference information and geographical position information of the distribution network topology automatic sequencing sensor terminal;
the single chip microcomputer is connected with the current signal acquisition induction coil and the GNSS module, and acquires the time reference information and the geographical position information acquired by the GNSS module through connection with the GNSS module; acquiring positive zero-crossing point time information and current amplitude information of the current signal through connection with the current signal induction coil; obtaining time sequence phase information of the current signal through comparison of the positive zero crossing point time and a time reference; acquiring an attribution substation, an attribution bus and an attribution outgoing line of the line according to the time sequence phase information and the current amplitude information;
and the communication module is connected to the singlechip and transmits the time sequence phase information, the current amplitude information and the geographical position information to the power distribution network topology automatic sequencing background terminal.
2. The distribution network topology automatic sequencing sensor terminal of claim 1, wherein the communication module comprises: a wireless ad hoc network communication module, or a mobile GPRS module.
3. The distribution network topology automatic sequencing sensor terminal of claim 2, wherein the wireless communication module is configured to communicate between different distribution network topology automatic sequencing sensor terminals through an ad hoc network in a scenario that a distance between different sensor terminals is less than 100 meters.
4. The distribution network topology automatic sequencing sensor terminal of claim 3, wherein the self-organizing network distinguishes different line home substations, home buses and home outgoing lines in a frequency division channel manner.
5. The distribution network topology automatic sequencing sensor terminal according to claim 2, wherein the mobile GPRS module is used for performing data communication with the distribution network topology automatic sequencing background terminal in a scene that the distance between different distribution network topology automatic sequencing sensor terminals is larger than 100 meters.
6. The distribution network topology automatic sequencing sensor terminal of claim 1, wherein the single chip microcomputer determines the timing phase information of the alternating current signals on the line through a 1PPS signal.
7. The distribution network topology automatic sequencing sensor terminal of claim 6, wherein the 1PPS signal is transmitted to the single chip microcomputer by the GNSS module.
8. The distribution network topology automatic sequencing sensor terminal of claim 1, further comprising:
and the energy extraction coil is used for extracting electric energy from the bus and supplementing the electric energy to the lithium battery by using the extracted electric energy.
9. The utility model provides a distribution network topology automatic sequencing backend terminal which characterized in that includes:
the background mobile GPRS module is used for acquiring time sequence phase information, current amplitude information and geographical position information uploaded by the power distribution network topology automatic sequencing sensor terminals, and judging an attributive substation, an attributive bus and an attributive outgoing line of each power distribution network topology automatic sequencing sensor terminal according to the time sequence phase information, the current amplitude information and the geographical position information of each power distribution network topology automatic sequencing sensor terminal;
and the server is connected to the mobile GPRS module and automatically sorts the distribution network topology automatic sorting sensor terminals according to the time sequence phase information, the current amplitude information and the geographical position information of the distribution network topology automatic sorting sensor terminals.
10. An automatic sequencing system for power distribution network topology, comprising: a plurality of distribution network topology automatic sequencing sensor terminals according to any one of claims 1 to 8, and at least one distribution network topology automatic sequencing background terminal according to claim 9.
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| CN202020200924.7U CN211293944U (en) | 2020-02-24 | 2020-02-24 | Distribution network topology automatic sequencing sensor terminal, background terminal and system |
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| CN202020200924.7U CN211293944U (en) | 2020-02-24 | 2020-02-24 | Distribution network topology automatic sequencing sensor terminal, background terminal and system |
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