CN112383347B - Power transmission system based on transmission network and leased public network - Google Patents
Power transmission system based on transmission network and leased public network Download PDFInfo
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- CN112383347B CN112383347B CN202011187371.7A CN202011187371A CN112383347B CN 112383347 B CN112383347 B CN 112383347B CN 202011187371 A CN202011187371 A CN 202011187371A CN 112383347 B CN112383347 B CN 112383347B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0005—Switch and router aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
- H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability
Abstract
The invention discloses a power transmission system based on a transmission network and a leased public network, which comprises: the single-upper-link optical cable station is accessed to the optical cable topology network through a unique upper-link optical cable and is communicated with the local side station; the single upper connection optical cable station is accessed to the transmission network, and only a single optical path is accessed due to the limitation of the single upper connection optical cable; a scheduling automation channel from a single uplink optical cable station to a local side station is configured with a double-transmission selective-reception service channel; the working route of the service channel selectively received and transmitted by the double transmitter is carried on the transmission network, and the protection route of the service channel selectively received and transmitted by the double transmitter is carried on the 2M time slot formed by the multiplexing leased circuit; when the single-uplink optical cable of the single-uplink optical cable station is interrupted, the working route of the dispatching automation channel from the single-uplink optical cable station to the local side station is interrupted, a switching condition is triggered, and the single-uplink optical cable is automatically switched to the protection route. The problem of reliability of single-uplink optical cable site dispatching automation channels in the power communication network can be solved.
Description
Technical Field
The embodiment of the invention relates to the technical field of power system communication, in particular to a power transmission system based on a transmission network and a leased public network.
Background
In the construction process of the power grid, the construction of the primary power grid limits the perfection of the construction of the power communication optical cable network architecture. The optical cable network has a part of star-shaped and chain-shaped structures, namely, sites of a single upper-link optical cable accessed to the optical cable network exist, the sites are usually interrupted by the upper-link optical cable, so that an optical path borne on the optical cable network is interrupted, further all services of the sites and a lower-end access site are completely interrupted, a five-level event is easily caused, and a large potential safety hazard is brought to electric power safe operation.
Disclosure of Invention
The invention provides a power transmission system based on a transmission network and a leased public network, which can solve the problem of service interruption caused by the limitation of a single uplink optical cable at a station and improve the reliability of a power grid.
In a first aspect, an embodiment of the present invention provides an electric power transmission system based on a transmission network and a leased public network, including: the single-upper-link optical cable station is accessed to the optical cable topology network through a unique upper-link optical cable and is communicated with the local side station; the single upper connection optical cable station is accessed to the transmission network, and only a single optical path is accessed due to the limitation of the single upper connection optical cable; wherein the content of the first and second substances,
a scheduling automation channel from a single uplink optical cable station to a local side station is configured with a double-transmission selective-reception service channel; the working route of the service channel selectively received and transmitted by the double transmitter is carried on the transmission network, and the protection route of the service channel selectively received and transmitted by the double transmitter is carried on the 2M time slot formed by the multiplexing leased circuit;
when the single-upper-link optical cable of the single-upper-link optical cable station is interrupted, the working route of the dispatching automation channel from the single-upper-link optical cable station to the local side station is interrupted, the switching condition is triggered, and the switching is automatically carried out to the protection route.
Optionally, the service channel of the single uplink optical cable station relates to a pulse code modulation PCM device, a digital distribution DDF distribution device, and a synchronous digital hierarchy SDH device; the PCM equipment is accessed to the SDH equipment through DDF (distributed data format) distribution equipment, and the SDH equipment is accessed to a transmission network through a single uplink optical cable of a single uplink optical cable station to form a single uplink optical path; the #9 optical port and the #10 optical port of the SDH equipment are connected to form an optical path in the station, and a bearing layer is provided for the multiplexing leased circuit;
the local side station is a convergence station, and the service channel of the local side station relates to PCM equipment, DDF wiring equipment and SDH equipment; the PCM equipment is accessed to the SDH equipment through the DDF wiring equipment, and the SDH equipment is accessed to the transmission network through a plurality of light paths; the #9 optical port and the #10 optical port of the SDH equipment are connected to form an intra-station optical path and provide a bearing layer for the multiplexing leased circuit.
Optionally, the local side station is a scheduling center station.
Optionally, when the single uplink optical cable station transmits the service to the local side station through the working route, the service sequentially passes through the PCM device of the single uplink optical cable station, the DDF wiring device of the single uplink optical cable station, the SDH device of the single uplink optical cable station, the transmission network, the SDH device of the local side station, the DDF wiring device of the local side station, and the PCM device of the local side station.
Optionally, when the office end station transmits the service to the single uplink optical cable station through the working route, the service sequentially passes through the PCM device of the office end station, the DDF wiring device of the office end station, the SDH device of the office end station, the transmission network, the SDH device of the single uplink optical cable station, the DDF wiring device of the single uplink optical cable station, and the PCM device of the single uplink optical cable station.
Optionally, when the single uplink optical cable station transmits the service to the local side station through the protection route, the service sequentially passes through the PCM device of the single uplink optical cable station, the DDF wiring device of the single uplink optical cable station, the SDH device of the single uplink optical cable station, an intra-station optical path formed from an optical port # 9 to an optical port # 10 of the SDH device of the single uplink optical cable station, the DDF wiring device of the single uplink optical cable station, the leased circuit, the DDF wiring device of the local side station, the SDH device of the local side station, an intra-station optical path formed from an optical port # 9 to an optical port # 10 of the SDH device of the local side station, the DDF wiring device of the local side station, and the PCM device of the local side station.
Optionally, when the office end station transmits the service to the single uplink cable station through the protection route, the service sequentially passes through the PCM device of the office end station, the DDF wiring device of the office end station, the SDH device of the office end station, an intra-station optical path formed by an optical port # 9 to an optical port # 10 of the SDH device of the office end station, the DDF wiring device of the office end station, a multiplexing leased circuit, the DDF wiring device of the single uplink cable station, the SDH device of the single uplink cable station, an intra-station optical path formed by an optical port # 9 to an optical port # 10 of the SDH device of the single uplink cable station, and the PCM device of the single uplink cable station.
Optionally, the single uplink optical cable station is a station end station.
Optionally, the local side site is further configured to monitor and manage the protection route, and obtain an operation condition of the multiplex leased circuit in real time.
Optionally, the multiplexing leased circuit is a 2M circuit.
The invention provides a power transmission system based on a transmission network and a leased public network, which comprises: the single-upper-link optical cable station is accessed to the optical cable topology network through a unique upper-link optical cable and is communicated with the local side station; the single upper connection optical cable station is accessed to the transmission network, and only a single optical path is accessed due to the limitation of the single upper connection optical cable; the dispatching automation channel from the single upper-link optical cable station to the local side station is configured with a double-transmitting selective-receiving service channel; the working route of the service channel selectively received and transmitted by the double transmitter is carried on the transmission network, and the protection route of the service channel selectively received and transmitted by the double transmitter is carried on the 2M time slot formed by the multiplexing leased circuit; when the single-uplink optical cable of the single-uplink optical cable station is interrupted, the working route of the dispatching automation channel from the single-uplink optical cable station to the local side station is interrupted, a switching condition is triggered, and the single-uplink optical cable is automatically switched to the protection route. The scheme provided by the invention is mainly used for solving the reliability problem of the single-uplink optical cable station dispatching automation channel in the electric power communication network, and the invention utilizes the principle of subnet link protection to configure a working route on the existing SDH transmission network, and after the leased public network is multiplexed into the transmission network, the 2M time slot provided by the leased public network circuit is used for configuring a protection route to form a service channel for double sending and selective receiving, thereby improving the reliability of the channel on the premise of not changing the structure of the electric power optical cable network.
Drawings
Fig. 1 is a schematic topology diagram of an SDH device access transmission network at a single uplink cable site according to an embodiment;
fig. 2 is a schematic diagram of a service channel between a single uplink optical cable station and a local side station according to an embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the construction process of the power grid, the construction of the primary power grid limits the perfection of the construction of the power communication optical cable network, and some remote sites (such as partial 110kV sites) adopt a single uplink optical cable mode to access the optical cable network. However, since the station has no two independent optical paths, the requirement for the reliability of the service channel cannot be met, and thus, after the service channel formed on the station is interrupted by the optical cable, all the automatic channels of the station and the lower access station are interrupted, which causes a risk of a five-level event causing interruption of total-station communication, and brings a certain hidden danger to the safe, stable and economic operation of the power grid. In order to solve the problems, the invention provides an electric power transmission system based on a transmission network and a leased public network, which is mainly used for solving the reliability problem of a single-uplink optical cable station dispatching automation channel in an electric power communication network.
It should be noted that the following embodiments of the present invention may be implemented individually, or may be implemented in combination with each other, and the embodiments of the present invention are not limited in this respect.
Next, a power transmission system based on a transmission network and a leased public network and technical effects thereof will be described.
Example one
Fig. 1 is a schematic topology diagram of an SDH device access transmission network of a single upstream cable site according to an embodiment, and for example, as shown in fig. 1, an electric power transmission network includes a single upstream cable site a, a site B, and sites C1, C2, C3, and C4. The single-riser cable station a accesses the power transmission network by means of a single-riser cable, and therefore the station a is connected only to the station B and the station a is not connected to all of the stations C1, C2, C3 and C4. The site B, the site C1, the site C2, the site C3 and the site C4 are all accessed to the power transmission network in a multi-uplink optical cable mode, namely the site B is connected with the site A, the site C1 and the site C4; the site C1 is connected with the site B, the site C2 and the site C4; site C2 is connected to site C1, site C3 and site C4; site C3 is connected to both site C2 and site C4; site C4 is connected to site B, site C1, site C2, and site C3.
Sites a, B and C1, C2, C3, C4 may be identical in structure and function, or may be different. Generally, the reliability of the station accessed to the power transmission system by adopting a multi-uplink optical cable mode is high, and because the construction of a primary power grid limits the perfection of the construction of a power communication optical cable network in the construction process of the power grid, some stations (such as a station A, generally located in a remote area) are only accessed to the power transmission network by adopting a single uplink optical path route mode. When the optical cable between the station A and the station B is interrupted, the optical path carried on the optical cable network is interrupted, and then all services of the station and the lower end access station are completely interrupted, so that a fifth-level event is easily caused, and a large potential safety hazard is brought to the safe operation of electric power. The power transmission system based on the transmission network and the leased public network mainly solves the problem that the optical path between the station A and the station B is possibly interrupted due to the limitation of a single uplink optical cable, and improves the reliability of the power grid.
Fig. 2 is a schematic view of a service channel between a single uplink optical cable station and a local side station according to a first embodiment. As shown in fig. 2, the power transmission system based on the transmission network and the leased public network includes: the single-upper-link optical cable station is accessed to the optical cable topology network through a unique upper-link optical cable and is communicated with the local side station; the single upper connection optical cable station is accessed to the transmission network, and only a single optical path is accessed due to the limitation of the single upper connection optical cable; the dispatching automation channel from the single upper-link optical cable station to the local side station is configured with a double-transmitting selective-receiving service channel; the working route of the service channel selectively received and transmitted by the double transmitter is carried on the transmission network, and the protection route of the service channel selectively received and transmitted by the double transmitter is carried on the 2M time slot formed by the multiplexing leased circuit; when the single-uplink optical cable of the single-uplink optical cable station is interrupted, the working route of the dispatching automation channel from the single-uplink optical cable station to the local side station is interrupted, the switching condition is triggered, and the switching is automatically carried out to the protection route, so that the service is ensured not to be interrupted.
As can be known from fig. 2, the service channels of the single uplink optical cable sites relate to pulse code modulation PCM devices, digital distribution DDF distribution devices, synchronous digital hierarchy SDH devices; the PCM equipment is accessed to the SDH equipment through DDF (distributed data format) distribution equipment, and the SDH equipment is accessed to a transmission network through a single uplink optical cable of a single uplink optical cable station to form a single uplink optical path; the #9 optical port and the #10 optical port of the SDH equipment are connected to form an optical path in the station, and a bearing layer is provided for the multiplexing leased circuit;
the local side station is a convergence station, and the service channel of the local side station relates to PCM equipment, DDF wiring equipment and SDH equipment; the PCM equipment is accessed to the SDH equipment through the DDF wiring equipment, and the SDH equipment is accessed to the transmission network through a plurality of light paths; the #9 optical port and the #10 optical port of the SDH equipment are connected to form an intra-station optical path and provide a bearing layer for the multiplexing leased circuit.
Typically, the office site may be a dispatch center site.
As shown in fig. 2, the working route is shown as a solid line in fig. 2, and the protection route is shown as a dotted line in fig. 2.
When the single uplink optical cable station transmits the service to the local side station through the working route, the service sequentially passes through the PCM equipment of the single uplink optical cable station, the DDF wiring equipment of the single uplink optical cable station, the SDH equipment of the single uplink optical cable station, the transmission network, the SDH equipment of the local side station, the DDF wiring equipment of the local side station and the PCM equipment of the local side station.
When the office end station transmits the service to the single uplink optical cable station through the working route, the service sequentially passes through the PCM equipment of the office end station, the DDF wiring equipment of the office end station, the SDH equipment of the office end station, the transmission network, the SDH equipment of the single uplink optical cable station, the DDF wiring equipment of the single uplink optical cable station and the PCM equipment of the single uplink optical cable station.
When the single upper-link optical cable station transmits the service to the local side station through the protection route, the service sequentially passes through the PCM equipment of the single upper-link optical cable station, the DDF wiring equipment of the single upper-link optical cable station, the SDH equipment of the single upper-link optical cable station, an intra-station optical path formed by the #9 optical port to the #10 optical port of the SDH equipment of the single upper-link optical cable station, the DDF wiring equipment of the single upper-link optical cable station, a multiplexing renting circuit, the DDF wiring equipment of the local side station, the SDH equipment of the local side station, an intra-station optical path formed by the #9 optical port to the #10 optical port of the SDH equipment of the local side station, the DDF wiring equipment of the local side station and the PCM equipment of the local side station.
When the office end station transmits the service to the single uplink cable station through the protection route, the service sequentially passes through the PCM equipment of the office end station, the DDF wiring equipment of the office end station, the SDH equipment of the office end station, an intra-station optical path formed by an optical port from #9 to #10 of the SDH equipment of the office end station, the DDF wiring equipment of the office end station, a multiplexing renting circuit, the DDF wiring equipment of the single uplink cable station, the SDH equipment of the single uplink cable station, an intra-station optical path formed by an optical port from #9 to #10 of the SDH equipment of the single uplink cable station, the DDF wiring equipment of the single uplink cable station and the PCM equipment of the single uplink cable station.
Optionally, the single uplink optical cable station is a station end station. The local side station is also used for monitoring and managing the protection route and acquiring the running condition of the multiplexing leased circuit in real time.
Optionally, the multiplexing leased circuit is a 2M circuit. The 2M circuit provides a link with a transmission rate of 2.048Mbits/s, and has the advantages of strong anti-interference capability, good confidentiality, high transmission rate, high channel utilization rate, small network delay and the like.
The invention provides a power transmission system based on a transmission network and a leased public network, which comprises: the single uplink optical cable station is accessed to the optical cable topology network through a unique uplink optical cable and is communicated with the local side station; the single upper connection optical cable station is accessed to the transmission network, and only a single optical path is accessed due to the limitation of the single upper connection optical cable; the dispatching automation channel from the single upper-link optical cable station to the local side station is configured with a double-transmitting selective-receiving service channel; the working route of the service channel selectively received and transmitted by the double transmitter is carried on the transmission network, and the protection route of the service channel selectively received and transmitted by the double transmitter is carried on the 2M time slot formed by the multiplexing leased circuit; when the single-uplink optical cable of the single-uplink optical cable station is interrupted, the working route of the dispatching automation channel from the single-uplink optical cable station to the local side station is interrupted, a switching condition is triggered, and the single-uplink optical cable is automatically switched to the protection route. The scheme provided by the invention is mainly used for solving the reliability problem of the single-uplink optical cable station dispatching automation channel in the electric power communication network, and the invention utilizes the principle of subnet link protection to configure a working route on the existing SDH transmission network, and after the leased public network is multiplexed into the transmission network, the 2M time slot provided by the leased public network circuit is used for configuring a protection route to form a service channel for double sending and selective receiving, thereby improving the reliability of the channel on the premise of not changing the structure of the electric power optical cable network.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. An electric power transmission system based on a transmission network and a leased public network, comprising: the single-uplink optical cable station is accessed to the optical cable topology network through a unique uplink optical cable and is communicated with the local side station; the single upper connection optical cable station is accessed to the transmission network, and only a single optical path is accessed due to the limitation of the single upper connection optical cable; wherein the content of the first and second substances,
the dispatching automation channel from the single upper-link optical cable station to the local side station is configured with a double-transmitting selective-receiving service channel; the working route of the service channel which is transmitted and selectively received by the double transmitter is borne on the transmission network, wherein the transmission network is an SDH transmission network; the protection route of the service channel which is transmitted and selectively received by the double transmitter is carried on the 2M time slot formed by the multiplexing leased circuit;
when the single uplink optical cable of the single uplink optical cable station is interrupted, the working route of the dispatching automation channel from the single uplink optical cable station to the local side station is interrupted, a switching condition is triggered, and the working route is automatically switched to the protection route;
the service channel of the single uplink optical cable station relates to Pulse Code Modulation (PCM) equipment, Digital Distribution (DDF) distribution equipment and Synchronous Digital Hierarchy (SDH) equipment; the PCM equipment is accessed to the SDH equipment through the DDF distribution equipment, and the SDH equipment is accessed to the transmission network through a single uplink optical cable of the single uplink optical cable station to form a single uplink optical path; the #9 optical port and the #10 optical port of the SDH equipment are connected to form an optical path in the station, and a bearing layer is provided for the multiplexing leased circuit;
the local side station is a convergence station, and the service channel of the local side station relates to PCM equipment, DDF wiring equipment and SDH equipment; the PCM equipment is accessed to the SDH equipment through the DDF wiring equipment, and the SDH equipment is accessed to the transmission network through a plurality of optical paths; and the #9 optical port and the #10 optical port of the SDH equipment are connected to form an optical path in the station, and a bearing layer is provided for the multiplexing leased circuit.
2. A transmission network and leased public network based power transmission system according to claim 1 wherein said local end station is a dispatch center station.
3. The power transmission system according to claim 1, wherein when the single upstream optical cable station transmits the service to the office end station through the working route, the service sequentially passes through the PCM device of the single upstream optical cable station, the DDF wiring device of the single upstream optical cable station, the SDH device of the single upstream optical cable station, the transmission network, the SDH device of the office end station, the DDF wiring device of the office end station, and the PCM device of the office end station.
4. The power transmission system according to claim 1, wherein when the office end station transmits the service to the single upstream optical cable station through the working route, the service sequentially passes through a PCM device of the office end station, a DDF wiring device of the office end station, an SDH device of the office end station, the transmission network, an SDH device of the single upstream optical cable station, a DDF wiring device of the single upstream optical cable station, and a PCM device of the single upstream optical cable station.
5. Transmission network and leased public network-based electric power transmission system according to claim 1, when the single uplink optical cable station transmits the traffic to the office station through the protection route, the service sequentially passes through the PCM device of the single uplink cable station, the DDF wiring device of the single uplink cable station, the SDH device of the single uplink cable station, an intra-station optical path formed by an optical port #9 to an optical port #10 of the SDH device of the single uplink cable station, the DDF wiring device of the single uplink cable station, the multiplexing rental circuit, the DDF wiring device of the office station, the SDH device of the office station, an intra-station optical path formed by an optical port #9 to an optical port #10 of the SDH device of the office station, the DDF wiring device of the office station, and the PCM device of the office station.
6. Transmission network and leased public network-based electric power transmission system according to claim 1, when the local side station transmits the traffic to the single uplink optical cable station through the protection route, the service sequentially passes through the PCM device of the office end station, the DDF wiring device of the office end station, the SDH device of the office end station, an intra-station optical path formed by an optical port from #9 to #10 of the SDH device of the office end station, the DDF wiring device of the office end station, the multiplexing leased circuit, the DDF wiring device of the single uplink optical cable station, the SDH device of the single uplink optical cable station, an intra-station optical path formed by an optical port from #9 to #10 of the SDH device of the single uplink optical cable station, the DDF wiring device of the single uplink optical cable station, and the PCM device of the single uplink optical cable station.
7. A transmission network and leased public network based power transmission system according to claim 1 wherein said single uplink optical cable station is a station end station.
8. The transmission system of claim 1, wherein the local side station is further configured to monitor and manage the protection route, and obtain the operation status of the re-leased circuit in real time.
9. A transmission network and leased public network based power transmission system as claimed in claim 1 wherein said multiplexed leased circuit is a 2M circuit.
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| CN106301538A (en) * | 2015-05-18 | 2017-01-04 | 中兴通讯股份有限公司 | A kind of method realizing pretection switch and optical network unit |
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| CN101123475A (en) * | 2006-08-11 | 2008-02-13 | 华为技术有限公司 | Optical channel protection method, device and system in optical communication system |
| CN101662426B (en) * | 2009-09-30 | 2012-06-13 | 中兴通讯股份有限公司 | T-MPLS tunnel protection processing method and system thereof |
| CN101867411B (en) * | 2010-06-17 | 2016-04-13 | 中兴通讯股份有限公司 | Realize the method, system and device of passive optical network optical fiber protection |
| CN101982984A (en) * | 2010-11-12 | 2011-03-02 | 安徽省电力公司信息通信分公司 | Optical-fiber protection switching method of ONU equipment in electric EPON system |
| CN202103669U (en) * | 2011-06-03 | 2012-01-04 | 青岛高科电子通信有限公司 | Automatic management system for power distribution network |
| CN104184517B (en) * | 2014-08-13 | 2017-02-15 | 烽火通信科技股份有限公司 | Protection switching device for synchronous transfer module (STM)-1 upper optical interface and achieving method |
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