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Novel power automatic information transmission platform

A power automation and platform technology, applied in the field of power information, can solve the problems of microwave communication being susceptible to interference, bit error rate, low carrier communication speed, and limited application occasions, so as to save construction and operation and maintenance costs, and facilitate capacity expansion and upgrading , Strong anti-interference ability

Inactive Publication Date: 2014-10-01
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, automation information mainly adopts three transmission methods: carrier communication, microwave communication and optical communication. From the perspective of the development trend of power communication network, because of the low speed of carrier communication, it has been gradually canceled in the transmission application of power grid business; microwave communication is also due to its low speed. Susceptible to interference and high bit error rate, there are fewer and fewer applications; optical fiber communication is rapidly popularized due to its good transmission performance, large capacity, fast speed, and good quality. Most of the existing business applications are based on optical fiber communication. However, due to the large investment in optical communication, the application occasions are also partially limited

Method used

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Experimental program
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Effect test

Embodiment 1

[0027] The main structure and working principle of this embodiment are as figure 1 As shown, including EPON network, EPON mainly includes optical line terminal OLT, optical distribution network ODN and user optical metering network unit ONU. Optical fiber access network is generally divided into active and passive optical networks from the technical aspect. As a new type of optical fiber access technology, EPON mainly uses the topological structure of PON to realize point-to-multipoint single-fiber bidirectional access of Ethernet. Typical networking methods of EPON networks include star, tree, bus and ring topologies. . The downlink of EPON adopts broadcast mode, using 1490 nm wavelength, and the signal sent by OLT is transmitted to each ONU through ODN. The clock information whose beginning is a synchronization identifier is used for synchronization between the OLT and the ONU. The synchronization identifier occupies 8 bits and forms variable-length data packets. Each ONU ...

Embodiment 2

[0030] In this embodiment, on the basis of Embodiment 1, the EPON networking application selects OLT and SDH / MSTP networking, such as Figure 5 Shown: This kind of networking mode can make EPON technology combine the advantages of SDH / MSTP technology to build a more flexible transmission network. One is to use the existing SDH ring network of the power system to provide GE interfaces for the OLT equipment in the substation, so that the OLTs between the stations form a GE optical fiber ring network. This method can improve the channel utilization of the SDH / MSTP network and also reduce the EPON The cost of building a ring network. The other is that the OLT is directly connected to the SDH / MSTP equipment in the substation, and the OLT at each site and the core switch of the dispatching master station form a star network, which can save backbone optical cable resources.

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Abstract

A novel power automatic information transmission platform comprises an EPON. The EPON mainly comprises an OLT, an ODN and a user ONU. The novel power automatic information transmission platform overcomes the defects in the prior art and has the advantages that construction, operation and maintenance cost is saved; due to the fact that only passive devices such as an optical fiber and an optical branching device are arranged between the OLT and the ONU, a machine room and a power device do not need to be rented, active devices are not needed, and maintenance staff are reduced; rich bandwidth resources are achieved, namely, the kilomega rate is adopted on both the uplink and the downlink of the EPON, and dynamic bandwidths can be flexibly distributed according to user requirements; the point-to-multipoint structure is adopted, so that convenience is brought for system expansion and updating; the functions of simultaneous transmission and time division multiplexing, IP data and videos and other services are possessed; optical fiber communication is adopted in the whole process, so that the anti-interference capacity is extremely high.

Description

technical field [0001] The invention relates to the field of electric power information, specifically a novel electric power automation information transmission platform. Background technique [0002] With the continuous in-depth application of the construction of the "three sets and five majors" system of the power system, the pace of construction of the dispatching automation master station is also accelerating, and the transmission mode of substation automation information is also changing rapidly, and the speed, quality and reliability of information transmission Sexual requirements are also getting higher and higher. With the gradual completion of the construction of "big operation" and "big centralized control" systems, the dispatching automation information of substations will be uniformly and efficiently transmitted to the ground dispatching dispatching monitoring center, which requires a change in the transmission mode of automation information. The transmission mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04B10/25
Inventor 江波何宇
Owner STATE GRID CORP OF CHINA
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