新型變壓器有載分接開關(guān)綜述
高飛,李金忠,張書琦
中國電力科學(xué)研究院,北京 100192
摘 要:電網(wǎng)中無功功率的變化會(huì)導(dǎo)致電壓的波動(dòng),為調(diào)節(jié)無功功率,需對(duì)電壓進(jìn)行調(diào)節(jié),電力變壓器有載分接開關(guān)是電壓調(diào)節(jié)的重要手段。通過分析不同類型有載分接開關(guān)的工作原理和調(diào)壓過程,對(duì)機(jī)械式、電力電子式和混合式有載分接開關(guān)進(jìn)行了對(duì)比研究,總結(jié)了它們的優(yōu)缺點(diǎn)。介紹了三種混合式有載分接開關(guān)的結(jié)構(gòu)及實(shí)現(xiàn)時(shí)存在的技術(shù)難點(diǎn),為進(jìn)一步開展混合式有載分接開關(guān)研究提供了參考。
關(guān)鍵詞:有載分接開關(guān);機(jī)械式;電力電子式;混合式
中圖分類號(hào):TM403.4 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1007-3175(2013)10-0001-05
Comprehensive Description of New-Type Transformer On-Load Tap-Changer
GAO Fei, LI Jin-zhong, ZHANG Shu-qi
China Electric Power Research Institute, Beijing 100192, China
Abstract: Changes of reactive power will lead to voltage fluctuations in power system. In order to adjust reactive power, there is a need to have voltage adjustment, and power transformer on-load tap-changer is an important means for voltage adjustment. Via analysis of working principle and on-load tap-changer voltage adjusting process of different kind of on-load tap-changers, comparisons were carried out for mechanical type, power electronic type and hybrid type, their advantages and disadvantages summarized. Introduction was made to structures and existing technical difficulties in realization for three kinds of hybrid type on-load tap-changers, which provided reference for further carrying out hybrid type on-load tap-changer study.
Key words: on-load tap-changer; mechanical; power electronic type; hybrid
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