基于超級電容器的DFIG低電壓穿越研究
葛雨生1，張仰飛2，陳光宇2，徐睿2，紀思3
（1 江蘇蘇美達成套設備工程有限公司，江蘇 南京 210018；
2 南京工程學院 電力工程學院，江蘇 南京 211167；3 云南電網(wǎng)有限責任公司楚雄供電局，云南 楚雄 675000）
摘 要：為避免電網(wǎng)電壓跌落時雙饋異步風力發(fā)電機組脫網(wǎng)運行，分析了雙饋異步風力發(fā)電系統(tǒng)雙PWM變流器控制策略，提出了將超級電容器耦合于風電機組機側(cè)變流器和網(wǎng)側(cè)變流器之間的直流側(cè)母線上的方法，從而借助超級電容器的功率快速吞吐能力實現(xiàn)網(wǎng)側(cè)故障時機側(cè)變流器與網(wǎng)側(cè)變流器之間的功率平衡，有效地穩(wěn)定了直流側(cè)母線電壓?；贛ATLAB/SIMULINK仿真了雙饋異步風力發(fā)電系統(tǒng)發(fā)生電壓跌落故障，仿真結(jié)果表明超級電容器模塊可以有效地減少故障期間的直流側(cè)電壓的干擾，能夠在故障清除之后迅速且平穩(wěn)地恢復有功功率。
關(guān)鍵詞：超級電容器；雙饋異步風力發(fā)電系統(tǒng)；低電壓穿越；控制策略
中圖分類號：TM53；TM614 文獻標識碼：A 文章編號：1007-3175(2019)10-0014-06
Research on DFIG Low Voltage Ride Through Based on Supercapacitor
GE Yu-sheng1, ZHANG Yang-fei2, CHEN Guang-yu2, XU Rui2, JI Si3
（1 Sumec Complete Equipment and Engineering Co., Ltd, Nanjing 210018, China;
2 School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167 , China;
3 Chuxiong Power Supply Bureau of Yunnan Power Grid Co., Ltd, Chuxiong 675000, China）
Abstract: In order to avoid the off-grid operation of doubly-fed asynchronous wind turbines when the grid voltage drops, this paper analyzed the control strategy of doubly-fed asynchronous wind turbines system and double PWM converter and proposed a method of coupling supercapacitor (SC) to the dc bus located between the wind turbine side converter and the grid-side converter, so as to establish the power balance between the turbine side converter and the grid side converter when the grid side network failed, with the help of the SC's power fast output handling capacity.The above strategy can effectively stabilize the bus voltage on the dc side. The voltage drop fault of DFIG system was simulated based on MATLAB/SIMULINK. The results show that the supercapacitor module can effectively reduce the disturbance of the dc side voltage during the fault period and can recover the active power quickly and smoothly after the fault is cleared.
Key words: supercapacitor; doubly-fed asynchronous power generation; low voltage ride through; control strategy
參考文獻
[1] 田世明，欒文鵬，張東霞，等. 能源互聯(lián)網(wǎng)技術(shù)形態(tài)與關(guān)鍵技術(shù)[J]. 中國電機工程學報，2015，35(14)：3482-3494.
[2] MARQUES G, SILVA F A.Doubly fed induction machine: modeling and control for wind energy generation[J].IEEE Industrial Electronics Magazine，2015，9(3)：54-55.
[3] 賀益康，胡家兵. 雙饋異步風力發(fā)電機并網(wǎng)運行中的幾個熱點問題[J]. 中國電機工程學報，2012，32(27)：1-15.
[4] LOPEZ J, GUBIA E, OLEA E, et al.Ride through of wind turbines with doubly fed induction generator under symmetrical voltage dips[J]. IEEE Transactions on Industrial Electronics，2009，56(10)：4246-4254.
[5] SWAIN S, RAY P K.Ride-through capability improvement of a grid-integrated DFIG based wind turbine system using a new protection design[C]//2016 IEEE 6th International Conference on Power Systems，2016：1-5.
[6] 賀益康，周鵬. 變速恒頻雙饋異步風力發(fā)電系統(tǒng)低電壓穿越技術(shù)綜述[J]. 電工技術(shù)學報，2009，24(9)：140-146.
[7] HILAL M, ERRAMI Y, BENCHAGRA M, et al. Doubly fed induction generator wind farm fault ridethrough capability[C]//2012 International Conference on Multimedia Computing and Systems, 2012：1079-1082.
[8] CAUSEBROOK A, ATKINSON D J, JACK A G.Fault ride-through of large wind farms using series dynamic braking resistors (March 2007)[J]. IEEE Transactions on Power Systems，2007，22(3)：966-975.
[9] 黨存祿，林國富. 超導儲能在并網(wǎng)直驅(qū)風電系統(tǒng)中的應用研究[J]. 電力系統(tǒng)保護與控制，2013，41(16)：48-53.
[10] 徐殿國，王偉，陳寧. 基于撬棒保護的雙饋電機風電場低電壓穿越動態(tài)特性分析[J]. 中國電機工程學報，2010，30(22)：29-36.
[11] DIVYA S, KRISHNA K T.Combination of super capacitor-switch type fault current limiter for LVRT enhancement of DFIG wind turbines[C]//2015 International Conference on Control Communication & Computing India，2015：343-348.
[12] 趙洋，梁海泉，張逸成. 電化學超級電容器建模研究現(xiàn)狀與展望[J]. 電工技術(shù)學報，2012，27(3)：188-195.
[13] 廖勇，李輝，姚駿，等. 采用串聯(lián)網(wǎng)側(cè)變換器的雙饋風電機組低電壓過渡控制策略[J]. 中國電機工程學報，2009，29(27)：90-98.
[14] ZHONG Y, ZHANG J, LI G, et al.Research on energy efficiency of supercapacitor energy storage system [C]//2006 International Conference on Power System Technology，2006：1-4.
[15] DIAB Y, VENET P, ROJAT G.Comparison of the different circuits used for balancing the voltage of supercapacitors:Studying performance and lifetime of supercapacitors[C]//The Second European Symposium on Supercapacitors & Applications(ESSCAP)，2006：11-15.
