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Method for identifying protection distance between extra-high voltage AC line and short wave radio direction-finding station

A UHV AC and radio direction-finding technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of lack of models and limited passive interference research work

Active Publication Date: 2008-06-18
STATE GRID ELECTRIC POWER RES INST
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Problems solved by technology

[0004] At present, there are mature calculation models for active interference, but the research work on passive interference is still very limited. ) from the short-wave radio direction-finding antenna must be greater than 60 times the height of the vertical ground conductor (iron tower), which usually has a large safety margin and lacks a model for more accurate protection calculations based on actual line conditions

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  • Method for identifying protection distance between extra-high voltage AC line and short wave radio direction-finding station
  • Method for identifying protection distance between extra-high voltage AC line and short wave radio direction-finding station
  • Method for identifying protection distance between extra-high voltage AC line and short wave radio direction-finding station

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with examples, but these examples should not be construed as limiting the present invention.

[0020] The current national standard GB13614-92 "Shortwave Radio Direction Finding Station (Station) Electromagnetic Environment Requirements)" stipulates that the distance between the vertical grounding conductor (iron tower) and the shortwave radio direction finding antenna must be greater than 60 times the height of the vertical grounding conductor (iron tower), usually It has a large safety margin and lacks a model for more accurate protection calculations based on actual line conditions.

[0021] According to the present invention, the 1000kV AC UHV iron tower is used as the vertical grounding conductor, and the height (or optional) as a quarter-wavelength resonance point falls outside the minimum operating frequency of the short-wave radio direction-finding machine (below), thus calculating the...

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Abstract

The invention relates to a determination method of the prevention zone between UHVAC and the direction finding station of the shortwave radio. The adopted method is that the prevention distance is determined according to the relationship between the actual resonance point of the 1000kV UHVAC tower and the lowest working frequency of the direction finding machine of the shortwave radio, wherein, the UHVAC tower is the vertical grounded conductor, and the resonance point with the height of one fourth of the wave falls outside of the lowest working frequency of the direction finding machine of the shortwave radio, then the prevention zone is determined by calculation. The invention proves that the invention has the higher calculation precision via the simulation test, and can be applied in the electromagnetism protection design between the high-voltage transmission line and the neighboring radio station.

Description

technical field [0001] The invention belongs to the field of electromagnetic compatibility of high-voltage power transmission and transformation engineering, and specifically relates to a method for determining the protection distance between a 1000kV ultra-high voltage AC line and a short-wave radio direction-finding station. Background technique [0002] With the acceleration of my country's electric power construction, the power grid structure is increasingly characterized by dense distribution, large-scale towers and lines, and the construction of a strong power grid with UHV power grid as the core has become the strategic goal of national power construction. At the same time, various industries Radio is also used more frequently for communication, navigation, positioning and other services. These radio stations have strict restrictions on surrounding interference sources and metal obstacles. How to ensure electromagnetic compatibility between high-volt...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R29/08
Inventor 张小武邬雄张建功李妮
Owner STATE GRID ELECTRIC POWER RES INST
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