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A converter station sound field simulation method and system

A sound field simulation and converter station technology, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve problems such as difficulty in determining the sound field simulation parameters of UHV converter stations, and achieve scientific sound source assignment and simulation calculations Precise, high modeling precision effects

Active Publication Date: 2019-04-23
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0004] The purpose of the present invention is to provide a converter station sound field simulation method and system to solve the problem that the sound field simulation parameters of UHV converter stations are difficult to determine

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  • A converter station sound field simulation method and system

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] see figure 1 , a sound field simulation method of a converter station of the present invention, specifically a method for sound field simulation of an UHV converter station based on sound source location and extraction, mainly including noise source location and extraction, modeling of the main sounding equipment of the converter station, and equipment acoustic analysis. The power reverse push process specifically includes the following steps:

[0034] Step 1: Based on the sound source location extraction technology, measure the sound pressure value at 1 meter from the surface of the sound emitting device and its Z-weighted 100Hz-3150Hz noise spectrum. Considering that most of the UHV converter station equipment is arranged at a sufficient distance, and according to the attenuation characteristics of point / line / surface sound s...

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Abstract

The invention discloses a converter station sound field simulation method and system, and the method comprises the steps of collecting and obtaining a noise signal of a to-be-tested sound production device of a converter station in a preset time based on a sound source positioning extraction method, and carrying out the calculation, and obtaining an actual measurement sound pressure value of a predetermined position of the to-be-tested sound production device; modeling the to-be-tested sound production equipment through noise prediction software; presetting the sound power of the to-be-testedsound production equipment; simulating to obtain a simulated sound pressure value of the preset position of the to-be-tested sound production equipment; calculating a difference value between the simulated sound pressure value and the actually measured sound pressure value; if the difference value meets the preset convergence condition, completing sound field simulation; if the difference does notaccord with the preset convergence condition, adjusting the sound power of the to-be-tested sound production equipment; and assigning the real value to the model for sound field simulation. The method and the system can improve the sound field simulation accuracy of the converter station, and can be applied to noise standard exceeding responsibility division and noise treatment scheme verification of the extra-high voltage converter station.

Description

technical field [0001] The invention belongs to the technical field of substation noise testing and sound field simulation, and in particular relates to a converter station sound field simulation method and system. Background technique [0002] UHV DC transmission has the characteristics of long transmission distance, large capacity and high voltage level, and can realize large-scale transmission of electric energy. As a number of UHV DC transmission projects have been completed and put into operation, the noise problem has become increasingly prominent. Common noise sources in UHV converter stations mainly include: converter transformer, connection transformer, busbar high impedance, line high impedance, AC filter, DC filter, smoothing reactor, cooling tower and high-altitude corona noise, etc. Compared with the AC station, there are many sound-generating devices, the sound power of a single device is large, and the acoustic environment is more complex. This makes the soun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 吴健赵亚林邬雄耿明昕樊创申晨王绿韩文杨彬景龑雷晓燕陈力
Owner STATE GRID CORP OF CHINA
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