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High-voltage transmission line radio interference excitation function determination method

A high-voltage transmission line and radio interference technology, applied in the field of power transmission and transformation engineering, can solve problems such as the failure to achieve the signal-to-noise ratio, and achieve the effect of avoiding the increase in cost, ensuring the accuracy and reliability of the design and the level of radio interference.

Active Publication Date: 2015-06-17
STATE GRID CORP OF CHINA +1
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

These electromagnetic waves propagate laterally along the transmission line to both sides, which may affect the amplitude and phase of the useful signal waveform received by the radio receiving equipment within a certain range along the line during normal operation, causing these radio receiving equipment to fail to reach to the signal-to-noise ratio required for proper operation

Method used

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  • High-voltage transmission line radio interference excitation function determination method
  • High-voltage transmission line radio interference excitation function determination method
  • High-voltage transmission line radio interference excitation function determination method

Examples

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Embodiment 1

[0034] Such as Figure 1-4 As shown, the invention of this example is a method for determining the radio interference excitation function of high-voltage transmission lines, including:

[0035] Obtain the number of wire splits and the radius of sub-wires;

[0036] Establish a transmission line simulation model;

[0037] Obtaining the average maximum electric field intensity on the wire surface through the model;

[0038] A radio interference excitation function value for the model is determined.

[0039] Using the UHV AC corona cage, a large number of different types of wires are tested and studied, the main purpose is to obtain the measured values ​​of the excitation function of different wire forms, and to fit the calculation formula of the excitation function. The main types of wires used in the test are as follows: 6×LGJ400, 6×LGJ500, 6×LGJ630, 8×LGJ400, 8×LGJ500, 8×LGJ630, 8×LGJ720, 8×LGJ900, 9×LGJ400, 9×LGJ720, 10× LGJ400, 10×LGJ630, 12×LGJ400, 12×LGJ500, 12×LGJ630, ...

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Abstract

The invention relates to a high-voltage transmission line radio interference excitation function determination method which comprises the first step of acquiring a wire split number and radius of branch wires, the second step of establishing a transmission line simulation model, the third step of acquiring average maximum electric field intensity of the wire surface through the transmission line simulation model, and the fourth step of determining a radio interference excitation function value of the transmission line simulation model. According to the technical scheme, the high-voltage transmission line radio interference excitation function determination method is more accurate and reliable on the aspect of predicting a high-voltage transmission line radio interference level.

Description

Technical field: [0001] The invention relates to the field of power transmission and transformation engineering, and more specifically relates to a method for determining a radio interference excitation function of a high-voltage transmission line. Background technique: [0002] In order to meet the growing national economic and social demand for electricity and further promote the energy revolution, the State Grid Corporation of my country has formulated a strong power grid with UHV power grid as the core according to China's national conditions. UHV power grid is mainly composed of 1000kV AC power transmission and transformation system and ±800kV DC power transmission and transformation system, which have the remarkable advantages of large transmission capacity, long transmission distance and small power loss. [0003] With the increase of voltage level, the problem of corona effect has become one of the key technical issues of UHV power transmission. The corona effect me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 裴春明
Owner STATE GRID CORP OF CHINA
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