An ultra-long-distance OPGW optical fiber communication system and its implementation method for local energy harvesting
An optical fiber communication system and local energy harvesting technology, applied in optical fiber transmission, renewable energy integration, transportation and packaging, etc., can solve problems such as difficult to achieve optical signal relay amplification, and achieve easy deployment and management, anti-interference and The effect of strong ability in harsh natural conditions
Active Publication Date: 2017-11-03
NARI TECH CO LTD +3
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Problems solved by technology
[0006] The purpose of the present invention is: in order to solve the problem that the relay station cannot be built due to the limited conditions in the UHV OPGW optical fiber ultra-long-distance communication, and thus it is difficult to realize the relay amplification of optical signals, to provide a relay station that can be directly installed on the electric power tower without the construction of a relay station. , Provide low power consumption and reliable distributed power supply for erbium-doped fiber amplifiers through local energy harvesting (electromagnetic energy, solar energy, etc.) OPGW optical fiber communication system and its realization method
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[0018] The present invention will be described in further detail below with reference to the accompanying drawings and examples.
[0019] The relationship between the gain of the Erbium-doped fiber amplifier (EDFA) and the pump power and the input signal optical power is as follows: figure 1 shown. Depend on figure 1 It can be seen that since the transmission power of optical communication SDH equipment is between -2dBm and 3dBm, the sensitivity of the receiver is -28dBm. If the signal gain is 10dB, the pumping power is less than 30mW. Therefore, an erbium-doped fiber amplifier can be used to design a low-power online communication signal amplification device. Long-distance all-optical communication can be realized by cascading erbium-doped fiber amplifiers.
[0020] Such as figure 2 Shown, the ultra-long-distance OPGW optical fiber communication system of the present invention comprises OPGW optical fiber, erbium-doped fiber amplifier, and described erbium-doped fiber am...
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The invention discloses an ultra-long-spaced OPGW (Optical Fiber Composite Overhead Ground Wire) optical fiber communication system capable of obtaining energy on site and an implementation method thereof, and belongs to the technical field of power system communication. The ultra-long-spaced OPGW optical fiber communication system capable of obtaining energy on site comprises an OPGW optical fiber and an erbium-doped optical fiber amplifier, a high-voltage energy-obtaining coil is arranged on a high-voltage power transmission line, magnetic energy radiated by the high-voltage power transmission line is converted into electric energy by using the high-voltage energy-obtaining coil to obtain induction current to be supplied to the erbium-doped optical fiber amplifier, and the strength of the induction current is controlled by using a voltage stabilizing circuit to prevent strong electric impact; meanwhile, a solar cell is taken as a backup power supply; when circuit failure power cut occurs at night or on a rainy day, a provided storage battery is used for supplying power to the erbium-doped optical fiber amplifier. By adopting the system, ultra-long-spaced communication of the OPGW optical fiber can be realized reliably and effectively, and additional power supply is not needed during deployment; additional building construction is unnecessary; high resistance to interference and severe natural conditions is realized.
Description
technical field [0001] The invention belongs to the technical field of power system communication, and more precisely, the invention relates to a technology for signal amplification to realize optical fiber ultra-long-distance transmission. Background technique [0002] The optical fiber communication in the 330-500kV ultra-high voltage power grid adopts the overhead ground wire composite optical cable (OPGW optical cable). Conventional optical fiber without relay communication distance is generally 50-100km, after adding optical amplifiers at the sending end and receiving end, the transmission distance can reach 250-300km, theoretically 500km without relay transmission can be realized. Therefore, in order to achieve thousands of kilometers, or even thousands of kilometers of ultra-long-distance optical fiber communication, it is necessary to build a relay station for optical signal amplification. However, many places where the current UHV OPGW optical cable passes are loca...
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IPC IPC(8): H04B10/25H02J7/35H02J50/00H02J50/10
CPCY02B10/10
Inventor 童和钦倪明薛禹胜罗剑波余文杰赵丽莉李悦岑
Owner NARI TECH CO LTD