Voltage traveling-wave sensor and installation and use method
A traveling wave sensor and voltage traveling wave technology, applied in the field of sensors, can solve problems such as inability to meet, and achieve the effects of small delay, improved accuracy and speed
Inactive Publication Date: 2015-06-24
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +2
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Problems solved by technology
Electronic transformers provide necessary sampling information for protection and measurement and control devices, and their sampling rate is generally lower than 10kHz, which is far from meeting the needs of traditional traveling wave ranging
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[0028] like Figure 1 to Figure 4 As shown, the voltage traveling wave sensor of the present invention includes a base 6 connected in sequence, a connecting portion and a hollow cylindrical shell 8, and the CVT ground wire, TYD ground wire or transformer core ground wire 5 are connected from the cylindrical The casing 8 passes through the middle, and the cylindrical casing 8 is provided with a traveling wave sensor body 1 and a signal processing circuit connected to the secondary side of the traveling wave sensor body 1, and the output end of the signal processing circuit is connected to the input of the traveling wave head detection circuit end;
[0029] The traveling wave sensor body 1 includes a ring-shaped iron core with a uniform cross-section and a coil wound on the ring-shaped iron core. Connect the signal processing circuit. In this embodiment, the annular iron core is an iron-cobalt-nickel alloy annular iron core, the coil wound on the annular iron core is 12 turns ...
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The invention discloses a voltage traveling-wave sensor and an installation and use method. The voltage traveling-wave sensor comprises a base, a connecting portion and a hollow cylinder-shaped shell, which are connected in sequence, a CVT grounding wire or a TYD grounding wire or a transformer core grounding wire penetrates through the middle of the cylinder-shaped shell, a traveling-wave sensor body and a signal processing circuit connected with a secondary side of the traveling-wave sensor body are arranged in the cylinder-shaped shell, and the output end of the signal processing circuit is connected with the input end of a traveling-wave wave-head detecting circuit. A traveling-wave signal of the primary equipment grounding wire can be directly collected under the circumstance that no direct electric connection with a primary side circuit exists, a traveling-wave hardware starting signal is effectively output in real time to the traveling-wave wave-head detecting circuit, and then wave-head identification is performed.
Description
technical field [0001] The invention relates to a sensor, in particular to a voltage traveling wave sensor and an installation and use method. Background technique [0002] my country's electric power industry is developing vigorously and rapidly. Long-distance high-voltage or ultra-high-voltage transmission lines are exposed in the wilderness, and most of them are mountainous and hilly terrains in my country. Rainstorms, lightning and other weather reasons and human factors often cause line failures. The rapid and precise location of fault points has always been a problem that has not been completely solved by the power sector. It poses a great threat to the safety, high-quality, and economical operation of the power system, and it also brings a heavy burden to line operation and maintenance personnel. The electricity sector has brought incalculable losses. Quickly and accurately determining the fault point after a transmission line fault is a key technology to ensure the ...
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Inventor 石光韩伟赵军赵文沛吴春红杨海晶黎波陈贤平彭锦凤熊彬
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST