变压器谐波抑制措施研究

发布时间：2018-05-06 10:17

本文选题：变压器 + 谐波　；参考：《华北电力大学》2014年硕士论文

【摘要】：由于社会经济的发展、人们对电力的需求日益增大,因此保证供电网的净化愈加重要。谐波是目前电力系统中存在的最普遍现象,是电能质量的主要指标。目前非线性设备的大量采用,谐波污染问题日趋严重,因此研究和治理谐波污染对改善供电质量、确保电力系统安全运行有着非常重要的意义。抑制谐波的主要措施有两种：一种是从电力装置本身出发设法减小或消除谐波源产生的谐波,另一种是在谐波源附近加装各种类型的滤波器。本文将从电力系统重要设备-变压器本身原理和结构出发,就如何利用变压器本身解决谐波问题展开了一系列理论研究。未来几年城市轨道交通将迎来发展的黄金时期,城市轨道交通牵引供电系统谐波抑制的研究,已逐步成为国内外研究的热点。本文重点针对城市轨道交通供电系统的谐波问题,分析了24脉波整流机组的工作原理及谐波理论,重点分析用两台分别移相±7.5°叠加组成的24脉波移相整流变压器原理。通过分析证明等效24脉波整流系统在降低谐波方面的优越性。
[Abstract]:With the development of social economy, the demand for electricity is increasing, so it is more and more important to ensure the purification of power grid. Harmonics are the most common phenomenon in power system and the main index of power quality. At present, the problem of harmonic pollution is becoming more and more serious with the large use of nonlinear equipment, so it is very important to study and control harmonic pollution to improve the quality of power supply and ensure the safe operation of power system. There are two main measures to suppress harmonics: one is to reduce or eliminate harmonics produced by harmonic source from the power device itself, the other is to install various kinds of filters near harmonic source. Starting from the principle and structure of transformer, an important equipment in power system, this paper makes a series of theoretical research on how to use transformer to solve harmonic problems. In the next few years, urban rail transit will usher in the golden period of development. The research on harmonic suppression of traction power supply system of urban rail transit has gradually become a hot spot at home and abroad. Aiming at the harmonic problem of power supply system of urban rail transit, this paper analyzes the working principle and harmonic theory of 24 pulse wave rectifier unit, and emphatically analyzes the principle of 24 pulse wave phase shift rectifier transformer composed of two phase shift 卤7.5 掳superposition. It is proved that the equivalent 24 pulse rectifier system is superior in reducing harmonics.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM41

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