基于雙饋風機的次同步阻尼控制器設(shè)計
楊燁，江曉燕
（南京理工大學 自動化學院，江蘇 南京 210094）
摘 要：針對雙饋風機串補并網(wǎng)系統(tǒng)的次同步振蕩現(xiàn)象以及現(xiàn)有的次同步振蕩抑制措施由于缺乏對振蕩機理的研究而物理意義不明確等問題，在PSCAD/EMTDC 軟件中搭建雙饋風機串補并網(wǎng)系統(tǒng)的模型，分析次同步振蕩的機理，并基于次同步振蕩的機理分別在轉(zhuǎn)子側(cè)和定子側(cè)設(shè)計一種新的附加阻尼控制器，通過帶通濾波、帶阻濾波以及移相環(huán)節(jié)，以達到抑制次同步振蕩的效果。仿真結(jié)果表明：兩種附加阻尼控制器在不同的運行工況下都能使系統(tǒng)快速穩(wěn)定，并且轉(zhuǎn)子側(cè)附加阻尼控制器的性能略優(yōu)于網(wǎng)側(cè)的附加阻尼控制器。
關(guān)鍵詞：次同步振蕩；附加阻尼控制器；雙饋風機；轉(zhuǎn)子側(cè)變流器；定子側(cè)變流器
中圖分類號：TM614 文獻標識碼：A 文章編號：1007-3175(2018)10-0005-05
Design of Subsynchronous Damping Controller Based on Doubly Fed Introduction Generator
YANG Ye, JIANG Xiao-yan
（School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China）
Abstract: In order to solve the problem that the subsynchronous oscillation and the existing subsynchronous oscillation suppression measures for doubly fed induction generator(DFIG)series compensation system are not clear in physical meaning due to the lack of research on the mechanism of oscillation, this paper set up a model of such system in PSCAD/EMTDC and analyzed the mechanism of subsynchronous oscillation, based on which a new additional damping controller, including bandpass filter, band stop filter and phase shift links, was designed at the rotor side and the stator side respectively, so as to suppress subsynchronous oscillation.The simulation results show that the two additional damping controllers can make the system fast and stable under different operating conditions,and the performance of the additional damping controller at the rotor side is slightly better than the additional damping controller at the grid side.
Key words: subsynchronous oscillation; additional damping controller; doubly fed induction generator; rotor side converter; stator side converter
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