阅读说明：本技术 一种电力线多频并发通信系统 (Power line multi-frequency concurrent communication system ) 是由 徐剑英 盛云 李亮 郭怀林 刘文斌 杨中原 张钊 张芳 韩德超 于 2021-01-26 设计创作，主要内容包括：本发明具体公开了一种电力线多频并发通信系统,包含线、子线1至N,通过每条子线包含的通信模块从机采集器用电信息采集终端、配电自动化终端的数据,通过10kV子线传输至通信模块主机,进而传输至电力通信系统主站,实现变电站系统下的用电信息采集终端及配电自动化终端的通信,极大的降低了成本,又保证了系统的安全性。(The invention particularly discloses a power line multi-frequency concurrent communication system which comprises lines and sub-lines 1-N, wherein data of a communication module contained in each sub-line from an electricity consumption information acquisition terminal and a power distribution automation terminal of a slave machine collector are transmitted to a communication module host machine through a 10kV sub-line and then transmitted to a power communication system main station, so that the communication between the electricity consumption information acquisition terminal and the power distribution automation terminal under a transformer substation system is realized, the cost is greatly reduced, and the safety of the system is ensured.)

1. The utility model provides a power line multifrequency concurrent communication system, has realized power line multifrequency concurrent communication at power consumption information acquisition terminal, distribution automation terminal under the complicated topology of many sub-lines of single bus of electric power system, contains bus, sub-line 1 to N, its characterized in that:

the bus is used as a 10kV incoming line of a transformer substation in a power line system, realizes the bus which is output to the outside of the transformer substation after the voltage of 35kV and higher level is converted into 10kV, and is used for 10kV energy transmission;

the sub-line 1 is connected with a bus and used as one of 10kV outgoing lines of a transformer substation in a power line system, so that transmission of 10kV voltage in the transformer substation to a 10kV transformer outside the transformer substation is realized, and the sub-line 1 is used for 10kV energy transmission;

the sub-line N (N is more than 1) is connected with the bus and is used as one of the 10kV outgoing lines of the transformer substation in the power line system, so that the transmission of the 10kV voltage in the transformer substation to a 10kV transformer outside the transformer substation is realized, and the sub-line N is used for 10kV energy transmission.

2. The multi-frequency concurrent communication system according to claim 1, wherein the bus comprises communication module hosts 1, 2, 3.

3. The power line multi-frequency concurrent communication system according to claim 1, wherein the sub-line 1 or N comprises a slave using communication module 11, 12, 13, an electrical information collection system 11, 12 and a distribution automation terminal 1 or a slave using communication module N1, N2, N3, an electrical information collection system N1, N2 and a distribution automation terminal N, wherein:

the electricity utilization information acquisition terminal 11 or N1 is respectively connected with the bus through a power line and is used for acquiring and analyzing electricity utilization data of a terminal user, realizing electricity utilization monitoring, carrying out ladder pricing, load management and line loss analysis, and finally achieving the purposes of automatic meter reading, off-peak electricity utilization, electricity utilization inspection (electricity larceny prevention), load prediction, electricity utilization cost saving and the like;

the electricity utilization information acquisition terminal 12 or N2 is used for acquiring and analyzing electricity utilization data of a terminal user, realizing electricity utilization monitoring, carrying out step pricing, load management and line loss analysis, and finally achieving the purposes of automatic meter reading, off-peak electricity utilization, electricity utilization inspection (electricity larceny prevention), load prediction, electricity utilization cost saving and the like;

the distribution automation terminal 1 or N is used for realizing the functions of measurement, communication, protection, fault location, isolation and power restoration, distribution transformer monitoring data analysis and operation maintenance of a 10kV power line;

the communication module slave machines 11, 12, 13 or N1, N2, N3 are used for performing uplink communication with the communication module host machine and performing downlink communication with the power consumption information acquisition terminal or the power distribution automation terminal, the communication module slave machines 11, 12, 13 or N1, N2, N3 are connected with the corresponding information acquisition terminal or the power distribution automation terminal through a network cable or a serial port cable and perform communication, and the communication module 11 or N1 is further connected with and communicates with the communication module host machine 1 or N and the communication module slave machine 12 or N2 which are included in the bus through power lines.

Technical Field

The invention relates to the field of power line communication, and particularly discloses a power line multi-frequency concurrent communication system.

Background

In the power line communication system, a bus exists in more transformer substation systems, a plurality of branch lines extend out, different power utilization information acquisition terminals and power distribution automation terminals can be used under each branch line, and under the condition, how to realize complex system communication of single-bus multi-sub-line topology through the power line system is a complex problem in the current power line communication system.

At present, a part of uplink communication of a large number of power utilization information acquisition terminals and a power distribution automation terminal complex system under a single-bus multi-sub-line topology in China is carried out through optical fibers, but at present, the problems of high capital consumption, difficult construction and the like exist in the domestic optical fiber coverage rate polar region and subsequent construction; and the other part is realized through wireless communication, but the communication mode has unsafe communication and potential safety hazard problems of a power system.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a power line multi-frequency concurrent communication system, which realizes communication between a power consumption information acquisition terminal and a power distribution automation terminal under a substation system, namely, communication is realized under the existing power line resource, so that the cost is greatly reduced, and the safety of the system is ensured.

In order to achieve the above object, the present invention provides a power line multi-frequency concurrent communication system, which comprises a bus and sub-lines 1 to N, wherein:

the bus is used for the power line system, the transformer substation is connected with a 10kV outgoing line, a bus which is used for converting 35kV and higher-level voltage into 10kV in the transformer substation and then outputting the voltage to the outside of the substation is realized, the bus is used for 10kV energy transmission, and the bus comprises communication module hosts 1, 2 and 3.. N, wherein the communication module hosts are connected through a communication network line and used for realizing uplink communication of a main station of the power system and downlink communication of a communication module slave machine;

the sub-line 1 is connected with a bus, is used for in the power line system, and 10kV of transformer substation goes out of the line, realizes that 10kV in the transformer substation transmits to the 10kV transformer outside the station, is used for 10kV energy transmission, contains power consumption information acquisition system 11, 12 and distribution automation terminal 1, and power consumption information acquisition system 11, 12 and distribution automation terminal 1 dispose communication module from machine 11, 12, 13 respectively, wherein:

the electricity utilization information acquisition terminal 11 is connected with the bus through a power line and is used for acquiring and analyzing electricity utilization data of a terminal user, realizing electricity utilization monitoring, pushing ladder pricing, load management and line loss analysis, and finally achieving the purposes of automatic meter reading, peak load shifting electricity utilization, electricity utilization inspection (electricity stealing prevention), load prediction, electricity utilization cost saving and the like;

the electricity consumption information acquisition terminal 12 is used for acquiring and analyzing electricity consumption data of a terminal user, realizing electricity consumption monitoring, carrying out step pricing, load management and line loss analysis, and finally achieving the purposes of automatic meter reading, off-peak electricity consumption, electricity consumption inspection (electricity larceny prevention), load prediction, electricity consumption cost saving and the like;

the distribution automation terminal 1 is used for realizing the functions of measurement, communication, protection, fault location, isolation and power restoration, distribution transformer monitoring data analysis and operation maintenance of a 10kV power line;

the communication module slave machines 11, 12 and 13 are used for communicating with the communication module host machine in an uplink mode and communicating with the power consumption information acquisition terminal or the power distribution automation terminal in a downlink mode, wherein the communication module slave machines 11, 12 and 13 are respectively connected with the corresponding power consumption information acquisition systems 11 and 12 and the power distribution automation terminal 1 through network cables or serial port cables and communicate with each other, the communication module slave machine 11 is respectively connected with the communication module host machine 1 and the communication module slave machine N2 through power cables and communicates with each other, and the communication module slave machine 12 is connected with the communication module slave machine 13 through power cables and communicates with each other.

The sub-line N (N > 1) is used for a power line system, a transformer substation is provided with a 10kV incoming line, a bus which is output to the outside of the substation after the voltage of 35kV and higher level is converted into 10kV in the transformer substation is realized, the sub-line N is used for 10kV energy transmission, and the sub-line N comprises power utilization information acquisition systems N1, N2 and a power distribution automation terminal N, wherein the power utilization information acquisition systems N1 and N2 and the power distribution automation terminal N are respectively provided with communication modules from a machine N1, a machine N2 and a machine N3, and the communication modules comprise:

the electricity utilization information acquisition terminal N1 is connected with a bus through a power line and is used for acquiring and analyzing electricity utilization data of a terminal user, realizing electricity utilization monitoring, carrying out step pricing, load management and line loss analysis, and finally achieving the purposes of automatic meter reading, off-peak electricity utilization, electricity utilization inspection (electricity larceny prevention), load prediction, electricity utilization cost saving and the like;

the electricity utilization information acquisition terminal N2 is used for acquiring and analyzing electricity utilization data of a terminal user, realizing electricity utilization monitoring, carrying out step pricing, load management and line loss analysis, and finally achieving the purposes of automatic meter reading, off-peak electricity utilization, electricity utilization inspection (electricity larceny prevention), load prediction, electricity cost saving and the like;

the distribution automation terminal N is used for realizing the functions of measurement, communication, protection, fault location, isolation and power restoration, distribution transformer monitoring data analysis and operation maintenance of a 10kV power line;

the communication module slave machines N1, N2 and N3 are used for communicating with the communication module host machine in an uplink mode and communicating with the electricity consumption information acquisition terminal or the power distribution automation terminal in a downlink mode, wherein the communication module slave machines N1, N2 and N3 are respectively connected with the corresponding electricity consumption information acquisition systems N1 and N2 and the power distribution automation terminal 1 through network cables or serial ports, the communication module slave machine N1 is respectively connected with the communication module host machine N and the communication module slave machine N2 through power cables and communicates, and the communication module slave machine N2 is connected with the communication module slave machine N3 through power cables and communicates.

The invention has the beneficial effects that: the communication module is connected with the power consumption information acquisition terminal and the power distribution automatic terminal to complete terminal data acquisition, and the communication module main and the communication module realize data uplink of the terminal, so that uplink transmission of the power consumption information acquisition terminal and the power distribution automatic terminal data under the single-bus multi-sub-line complex topology of the power system is realized.

Drawings

Fig. 1 is a block diagram of a power line multi-frequency concurrent communication system according to the present invention.

Fig. 2 is a communication system diagram of the power line multi-frequency concurrent communication system of the present invention.

Fig. 3 is a schematic diagram of selecting an optimal sub-line frequency band of the power line multi-frequency concurrent communication system according to the present invention.

Fig. 4 is a schematic diagram illustrating operation of the power line multi-frequency concurrent communication system according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments.

As shown in fig. 1, a power line multi-frequency concurrent communication system includes a bus and sub-lines 1 to N, wherein:

the bus is used for the 10kV outgoing of a transformer substation in a power line system, realizes the bus which is output to the outside of the substation after the voltage of 35kV or higher level is converted into 10kV, and is used for the 10kV energy transmission;

the sub-line 1 is used for 10kV outgoing of a transformer substation in a power line system, realizes transmission of 10kV in the transformer substation to a 10kV transformer outside the transformer substation, and is used for 10kV energy transmission;

the sub-line N (N is more than 1) is used for leading in 10kV of a transformer substation in a power line system, realizing the transmission of 10kV in the transformer substation to a 10kV transformer outside the substation and used for the transmission of 10kV energy;

the communication module host machines 1 to N configured on the bus are connected through network cables, the electricity consumption information acquisition systems 11 to N1 included in the sub-lines 1 to N are respectively connected with the bus through power lines, the communication module slave machines 11 to N1 configured on the bus are connected with the communication module host machines 1 to N included in the bus through the power lines, and each communication module slave machine and the corresponding information acquisition terminal or distribution automation terminal are connected through the network cables or serial port lines and perform communication.

As shown in fig. 2, a bus is configured with communication module hosts 1, 2, and 3.

The sub-line 1 comprises electricity utilization information acquisition terminals 11 and 12 and a power distribution automation terminal 1, wherein the electricity utilization information acquisition systems 11 and 12 and the power distribution automation terminal 1 are respectively configured with communication module slave machines 11, 12 and 13, the communication module slave machine 11 is respectively communicated with the communication module host machine 1 and the communication module slave machine 12, and the communication module slave machine 12 is communicated with the communication module slave machine 13;

the sub-line N (N > 1) comprises power utilization information acquisition terminals N1, N2 and a power distribution automation terminal N, wherein the power utilization information acquisition systems N1 and N2 and the power distribution automation terminal N are respectively provided with communication module slaves N1, N2 and N3, the communication module slave N1 is respectively communicated with the communication module host machine N and the communication module slave machine N2, and the communication module slave machine N2 is communicated with the communication module slave machine N3;

the communication module host machines 1 to N configured on the bus are connected through network cables, the electricity consumption information acquisition systems 11 to N1 included in the sub-lines 1 to N are respectively connected with the bus through power lines, the communication module slave machines 11 to N1 configured on the bus are connected with the communication module host machines 1 to N included in the bus through the power lines, and each communication module slave machine and the corresponding information acquisition terminal or distribution automation terminal are connected through the network cables or serial port lines and perform communication.

As shown in fig. 3, the communication module masters of all the child wires communicate with each other via the communication network, and define a time axis, the communication module master 1 of the child wire 1 has a time axis t1, the communication module master 2 of the child wire 2 has a time axis t2, the communication module master 3 of the child wire 2 has a time axis t3, and the communication module master N of the child wire N has a time axis tN. After the time axis is allocated in a convention manner, the host computer and the slave computer of all the sub-line communication modules select the final communication frequency band of the line. Taking sub-line 1 as an example, communication between the communication module host 1 and the communication module slave 11, the communication module slave 12 and the communication module slave 13 is performed according to frequency band 1, frequency band 2 and frequency band 3. Similarly, traversing all the sub-items to select an optimal communication frequency band; and after the selection is finished, all the sub-items are communicated according to the own optimal communication frequency band. After all the sub-lines select the optimal frequency band, the communication module host 1, the communication module host 2 and the communication module host 3 negotiate with each other, and a frequency band is fixed for each sub-line to perform communication.

As shown in fig. 4, sub-line 1 communicates with band 3, sub-line 2 communicates with band N, sub-line 3 communicates with band 2, and sub-line N communicates with band 1. Finally, the power line multi-frequency concurrent communication system based on the power utilization information acquisition terminal and the power distribution automation terminal under the complex topology of the single bus and the multiple sub-lines of the power system is realized.

The above embodiments are illustrative of specific embodiments of the present invention, and are not restrictive of the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention to obtain corresponding equivalent technical solutions, and therefore all equivalent technical solutions should be included in the scope of the present invention.