TCSC在抑制多機(jī)電力系統(tǒng)次同步振蕩中的應(yīng)用研究
吳小剛,康積濤,梁植淇
西南交通大學(xué) 電氣工程學(xué)院,四川 成都 610031
摘 要:在PSCAD/EMTDC平臺構(gòu)建同電廠和不同電廠兩機(jī)系統(tǒng)模型,結(jié)合測試信號法和Prony算法,分析了系統(tǒng)發(fā)生次同步諧振的可能性及可控串聯(lián)補(bǔ)償(TCSC)抑制同型和不同型兩機(jī)系統(tǒng)次同步振蕩的效果。仿真結(jié)果表明,采取新的基準(zhǔn)容量下,同型兩機(jī)等值系統(tǒng)的電氣阻尼為原單機(jī)時(shí)候的兩倍左右;TCSC在抑制兩機(jī)不同型系統(tǒng)同步諧振(SSR)問題時(shí),需要分別為不同發(fā)電機(jī)設(shè)計(jì)附加次同步阻尼控制器,且位于不同電廠的兩機(jī)軸系之間不存在明顯的扭振相互作用。
關(guān)鍵詞:次同步諧振;可控串聯(lián)補(bǔ)償;測試信號法
中圖分類號:TM712 文獻(xiàn)標(biāo)識碼:A 文章編號:1007-3175(2013)12-0017-05
Application Study on Thyristor Controlled Series Compensation in Inhibition of Sub-Synchronous Oscillation for Multi-Machine Power System
WU Xiao-gang, KANG Ji-tao, LIANG Zhi-qi
School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
Abstract: The two machines system model, which is in the same power plant or in the different power plants, was established on PSCAD/EMTDC platform. Combined with the test signal method and Prony algorithm, this paper analyzed the possibility of system sub-synchronous oscillation and the effect of thyristor controlled series compensation (TCSC) inhibiting sub-synchronous oscillation of homotype and different type two machines system. Simulation result shows that in adoption of new bench mark capacity, the electrical damping of the same model of two machines equivalent system is about two times of the single machine system; in issue of TCSC inhibition of two machine different model system SSR, there was a need to design additional sub-synchronous damping controller for different generators, and there was no obvious torsional interaction between two machines shaft system in different electric power plants.
Key words: subsynchronous oscillation; thyristor controlled series compensation; test signal method
參考文獻(xiàn)
[1] 程時(shí)杰,曹一家,江全元.電力系統(tǒng)次同步振蕩的理論與方法[M].北京:科學(xué)出版社,2009.
[2] 國家電網(wǎng)公司建設(shè)運(yùn)行部,中國電力科學(xué)研究院.靈活交流輸電技術(shù)在國家骨干電網(wǎng)中的工程應(yīng)用[M].北京:中國電力出版社,2008.
[3] 楊帆,王西田,徐英新,陳陳.同型多機(jī)電力系統(tǒng)間扭振相互作用的等效簡化研究[J].中國電機(jī)工程學(xué)報(bào),2006,26(5):6-11.
[4] 韓俊,徐政.基于狀態(tài)空間分析法的多機(jī)系統(tǒng)次同步諧振和自勵磁研究[J].電網(wǎng)技術(shù),2011,35(6):88-94.
[5] 倪以信,陳壽孫,張寶霖.動態(tài)電力系統(tǒng)的理論與分析[M].北京:清華大學(xué)出版社,2002.
[6] 王敏.基于TCSC與SVC的電力系統(tǒng)次同步振蕩抑制研究[D].成都:西南交通大學(xué),2012.
[7] 周長春,徐政,王冠.多機(jī)電力系統(tǒng)扭振相互作用的研究綜述[J].電網(wǎng)技術(shù),2004,28(6):1-4.
[8] 徐政.交直流電力系統(tǒng)的動態(tài)行為分析[M].北京:機(jī)械工業(yè)出版社,2004.
[9] 鄭翔,徐政,張靜.TCSC次同步諧振附加阻尼控制器[J].電工技術(shù)學(xué)報(bào),2011,26(2):181-186.