High-voltage direct current power transmission system grounding electrode temperature field monitoring system and method
A power transmission system, high-voltage direct current technology, applied in thermometers, thermometers with physical/chemical changes, measuring devices, etc., can solve problems such as power supply, easy loss of data, and incomplete monitoring points
Active Publication Date: 2015-07-15
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID +1
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Problems solved by technology
[0013] The main purpose of the embodiment of the present invention is to provide a ground electrode temperature field monitoring system and method of HVDC power transmission system to solve the problem of incomplete monitoring points and poor monitoring density in the existing ground electrode temperature field monitoring technology, which needs to be provided at the ground electrode site. Problems such as power supply and easy loss of data
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[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0036] The invention provides a monitoring system for the ground electrode temperature field of a HVDC power transmission system, such as Figure 4 As shown, the system includes: optical fiber 41 , Brillouin distributed optical fiber sensor 42 and ground electrode temperature field monitoring host 43 . Among them, the optical fiber 41 is laid along the ground electrode 40; the Brillouin distributed optical fiber sensor 42 is connected to the optical fiber 41 f...
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The invention provides a high-voltage direct current power transmission system grounding electrode temperature field monitoring system and method. According to the system, optical fibers are arranged along a grounding electrode; a Brillouin distributed optical fiber sensor is connected with the optical fibers and used for sending lasers to the optical fibers, Brillouin scattering light generated in the optical fibers is detected and is analyzed and processed based on the Brillouin scattering light principle, and temperature distribution data of the optical fibers are acquired; a grounding electrode temperature field monitoring host is used for determining temperature field distribution conditions of the grounding electrode according to the temperature distribution data of the optical fibers. By means of the system and method, power supply equipment does not need to be provided for the electrode address of the grounding electrode, and collected data loss caused by the lack of power supplies is avoided; because the optical fibers are arrayed along the grounding electrode, temperature collecting points are denser, the overall temperature field of the grounding electrode can be covered with the temperature collecting points which are denser, and true grounding-electrode temperature field conditions can be restored effectively.
Description
technical field [0001] The invention relates to the technical field of high voltage direct current transmission, in particular to a monitoring system and method for a ground electrode temperature field of a high voltage direct current transmission system. Background technique [0002] The geographical distribution of energy and load centers in my country is extremely uneven, which determines the inevitable trend of long-distance and large-scale flow of energy in my country. HVDC (High-Voltage Direct Current) has an irreplaceable position in energy flow due to its advantages of large power transmission capacity and long transmission distance. [0003] HVDC power transmission technology is different from AC power transmission in many aspects, and has its own inherent characteristics and technical requirements. Grounding electrode design technology is one example. The HVDC power transmission system separates the working ground and the safety protection ground, and the working ...
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IPC IPC(8): G01K11/32G01K11/322
Inventor 王奇李晋伟钱海吕金壮常安宋云海何红太于钦刚
Owner EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID