CN211509044U - Medium-voltage line power failure indication transmission system based on medium-voltage carrier communication - Google Patents
Medium-voltage line power failure indication transmission system based on medium-voltage carrier communication Download PDFInfo
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- CN211509044U CN211509044U CN202020372195.3U CN202020372195U CN211509044U CN 211509044 U CN211509044 U CN 211509044U CN 202020372195 U CN202020372195 U CN 202020372195U CN 211509044 U CN211509044 U CN 211509044U
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Abstract
The utility model discloses a medium voltage circuit falls electric instruction transmission system based on medium voltage carrier communication this system includes optical communication module wireless communication module, carrier wave host computer, carrier wave from machine, coupler and distribution terminal. Any node with optical fiber uplink equipment/wireless public network signals on the medium-voltage distribution line is provided with a carrier host and an optical communication module/wireless communication module, the carrier host is connected with a power company main station through the optical communication module/wireless communication module, and the carrier host is connected to the medium-voltage distribution line through a coupler; and the carrier slave machines are arranged at a plurality of power distribution terminals on the same line and branch lines thereof, are connected with the power distribution terminals through Ethernet ports, and are connected to the medium-voltage distribution line through couplers. The utility model discloses support pure overhead line, bury the cable conductor and make somebody a mere figurehead and bury cable hybrid line with ground, can solve the last communication problem of well voltage circuit trouble indication after the electricity falls, help the quick location and the investigation solution of trouble problem.
Description
Technical Field
The utility model relates to a power line carrier communication technical field, concretely relates to medium voltage line falls electric indication transmission system based on medium voltage carrier communication realizes the two-way high-speed data transmission between distribution terminal and the power company main website through the mode of medium voltage carrier communication and the mixed relay of fiber communication/radio communication.
Background
The power line carrier is a communication system that converts data information into a carrier signal in an analog system or a digital system, and transmits the carrier signal to a power line for transmission. The power line carrier communication has the greatest advantage that the existing widely distributed power lines are used as communication media, and long-distance and high-reliability wired private network communication can be realized without laying cables.
In the field of distribution automation, optical fiber communication is mainly adopted for communication between a distribution terminal and a power company main station, and wireless communication is allowed in part of regions. However, the optical fiber communication has the problems of incomplete optical fiber laying and overhigh laying cost; the wireless communication has the problems of signal coverage failure and signal instability; resulting in some power distribution terminal devices not being able to communicate with the master station. In order to realize the quick response of distribution automation, when the medium-voltage line fails and is powered down, the power down indication is transmitted to the main station of the power company in time, medium-voltage carrier waves which take the medium-voltage distribution line as a communication channel can be adopted to transmit the data of a distribution terminal to a position covered by optical fiber laying/wireless public network signals, and then the data is further uploaded to the main station through optical fiber communication/wireless communication.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a solve the power down instruction of medium voltage circuit after the power down and can not in time transmit the problem of power company main website to realize the initiation of communication link between distribution terminal and the main website, establish, maintain and terminate and the high-speed two-way data transmission between power company main website and the distribution terminal, the utility model provides a technical scheme does:
a medium voltage line power failure indication transmission system based on medium voltage carrier communication is characterized in that: the system comprises an optical communication module/wireless communication module, a carrier host, a carrier slave, a coupler and a power distribution terminal, wherein the carrier host and the optical communication module/wireless communication module are arranged at any node of an optical fiber uplink device/wireless public network signal on a medium-voltage power distribution line, the carrier host is connected with a power company main station through the optical communication module/wireless communication module, and the carrier host is connected to the medium-voltage power distribution line through the coupler; the carrier slave machines are arranged at a plurality of power distribution terminals on the same line and branch lines of the medium-voltage power distribution line, the carrier slave machines are connected with the power distribution terminals through Ethernet ports, and the carrier slave machines are connected to the medium-voltage power distribution line through couplers.
When a carrier signal is input, the carrier host passes through the signal receiving circuit and then enters the high-performance receiving filter, the signal receiving performance can be enhanced, signal demodulation is realized, when the carrier signal is output, the carrier host passes through the high-performance sending filter, the sending waveform can be adjusted to be regular, the information carrying capacity of the signal is enhanced, the signal is output through the sending circuit, and the carrier host carries out parallel sending and receiving of one or more frequency point carrier signals by adding the high-performance filter on the sending and receiving circuit.
The carrier host machine carries out time-sharing communication with one or more carrier slave machines under each frequency point, and one or more centralized meter reading terminals acting on the downlink initiate, establish, maintain and terminate a communication link.
The transmission system can keep a stable and reliable communication link through the coupler, the carrier slave and the power distribution terminal when intelligent switches (K1, K2, … and Kn) on the medium-voltage power distribution line are disconnected.
The transmission system keeps a stable and reliable communication link when a medium-voltage power distribution line is powered down, and the power down indication is uploaded to a main station of a power company through the optical communication module/wireless communication module, the carrier host, the carrier slave, the coupler and the power distribution terminal.
Drawings
Fig. 1 is a system block diagram of the transmission system of the present invention.
Fig. 2 is a schematic diagram of the receiving and transmitting circuits of the carrier host of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention is provided in connection with the accompanying drawings, which are included to illustrate and not to limit the invention.
Fig. 1 is a system block diagram of a medium voltage line power down indication transmission system based on medium voltage carrier communication. The carrier host is connected with the optical communication module/wireless communication module through a serial interface and is connected with the medium-voltage distribution line through a coupler; the carrier slave computer is connected with the centralized meter reading terminal through an Ethernet port and is connected with the medium-voltage distribution line through a coupler.
Data transmitted from the power company master station is transmitted to the optical communication module/the wireless communication module through optical fiber communication/wireless communication, and then transmitted to the carrier host through the serial interface. Referring to fig. 2, when receiving a signal, the carrier host enters the high-performance receiving filter through the receiving circuit of the device, so that the signal receiving performance can be enhanced, and carrier signal analysis can be realized. When signals are transmitted, the transmission waveforms can be adjusted to be regular through the high-performance transmission filter, the information carrying capacity of the signals is enhanced, and then the carrier wave equipment is output through the transmission circuit. The carrier host determines a frequency point sent by a carrier and a target carrier slave according to the analysis of the data, converts the data into a carrier signal, and sends the carrier signal to a medium-voltage distribution line for transmission through the coupler. After being received by the target carrier slave, the carrier signal is converted back to data and sent to a power distribution terminal connected with the carrier slave.
And the uplink data sent from the power distribution terminal is sent to the connected carrier slave through the Ethernet port. The carrier slave machine converts the data into a carrier signal, and the carrier signal is sent to a medium-voltage distribution line through a coupler for transmission. After being received by the carrier host, the carrier signal is converted back into data, and is sent to the optical communication module/wireless communication module through the serial interface, and further sent to the power company main station through optical fiber communication/wireless communication.
When the intelligent switch is disconnected on a medium-voltage line, the carrier signal can be transmitted in a bridging manner through the two couplers in front of and behind the switch, and the stability of a communication link is ensured.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent replacements, improvements, etc. made within the scope of the present invention and the attached drawings should be included in the protection scope of the present invention.
Claims (5)
1. A medium voltage line power failure indication transmission system based on medium voltage carrier communication is characterized in that: the system comprises an optical communication module/wireless communication module, a carrier host, a carrier slave, a coupler and a power distribution terminal, wherein the carrier host and the optical communication module/wireless communication module are arranged at any node of an optical fiber uplink device/wireless public network signal on a medium-voltage power distribution line, the carrier host is connected with a power company main station through the optical communication module/wireless communication module, and the carrier host is connected to the medium-voltage power distribution line through the coupler; the carrier slave machines are arranged at a plurality of power distribution terminals on the same line and branch lines of the medium-voltage power distribution line, the carrier slave machines are connected with the power distribution terminals through Ethernet ports, and the carrier slave machines are connected to the medium-voltage power distribution line through couplers.
2. A medium voltage line power down indication transmission system based on medium voltage carrier communication according to claim 1, characterized in that: when a carrier signal is input, the carrier host passes through the signal receiving circuit and then enters the high-performance receiving filter, the signal receiving performance can be enhanced, signal demodulation is realized, when the carrier signal is output, the carrier host can adjust the sending waveform to be regular through the high-performance sending filter, the information carrying capacity of the signal is enhanced, the signal is output through the sending circuit, and the carrier host carries out parallel receiving and sending of one or more frequency point carrier signals through adding the high-performance filter on the receiving and sending circuits of the carrier host.
3. A medium voltage line power down indication transmission system based on medium voltage carrier communication according to claim 1, characterized in that: the carrier host machine carries out time-sharing communication with one or more carrier slave machines under each frequency point, and one or more centralized meter reading terminals acting on the downlink initiate, establish, maintain and terminate a communication link.
4. A medium voltage line power down indication transmission system based on medium voltage carrier communication according to claim 1, characterized in that: when intelligent switches (K1, K2, … and Kn) on a medium-voltage distribution line are disconnected, the transmission system keeps a communication link stable and reliable through a coupler, a carrier slave machine and a distribution terminal.
5. A medium voltage line power down indication transmission system based on medium voltage carrier communication according to claim 1, characterized in that: the transmission system keeps a stable and reliable communication link when a medium-voltage power distribution line is powered down, and the power down indication is uploaded to a main station of a power company through the optical communication module/wireless communication module, the carrier host, the carrier slave, the coupler and the power distribution terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020372195.3U CN211509044U (en) | 2020-03-21 | 2020-03-21 | Medium-voltage line power failure indication transmission system based on medium-voltage carrier communication |
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| CN202020372195.3U CN211509044U (en) | 2020-03-21 | 2020-03-21 | Medium-voltage line power failure indication transmission system based on medium-voltage carrier communication |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485605A (en) * | 2020-11-17 | 2021-03-12 | 青岛鼎信通讯股份有限公司 | Fault detection system based on medium-voltage carrier |
| CN112994752A (en) * | 2021-02-03 | 2021-06-18 | 青岛鼎信通讯股份有限公司 | Optical signal communication breakpoint connection method based on medium-voltage carrier communication |
| CN113655331A (en) * | 2021-01-26 | 2021-11-16 | 青岛鼎信通讯股份有限公司 | Medium-voltage carrier feeder fault detection system |
-
2020
- 2020-03-21 CN CN202020372195.3U patent/CN211509044U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485605A (en) * | 2020-11-17 | 2021-03-12 | 青岛鼎信通讯股份有限公司 | Fault detection system based on medium-voltage carrier |
| CN113655331A (en) * | 2021-01-26 | 2021-11-16 | 青岛鼎信通讯股份有限公司 | Medium-voltage carrier feeder fault detection system |
| CN112994752A (en) * | 2021-02-03 | 2021-06-18 | 青岛鼎信通讯股份有限公司 | Optical signal communication breakpoint connection method based on medium-voltage carrier communication |
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