動(dòng)態(tài)負(fù)載下PSM電源的諧波研究
林華輝1,陽璞瓊1,2
(1 南華大學(xué) 電氣工程學(xué)院,湖南 衡陽 421001;
2 南華大學(xué) 磁約束核聚變研究重點(diǎn)實(shí)驗(yàn)室,湖南 衡陽 421001)
摘 要:動(dòng)態(tài)負(fù)載造成的諧波會(huì)影響電網(wǎng)電能質(zhì)量,危害系統(tǒng)安全運(yùn)行。利用 MATLAB/Simulink 建立離子回旋共振加熱 (ICRH) 的 PSM 高壓電源模型,分析了靜態(tài)與動(dòng)態(tài)下不同負(fù)載特性的諧波含量以及純阻性下各種負(fù)載動(dòng)態(tài)產(chǎn)生的特征次諧波含量,對(duì)比各次數(shù)諧波含量后,判斷負(fù)載大致變化趨勢(shì)。仿真結(jié)果表明,感性和容性負(fù)載對(duì)總諧波畸變率影響很小,而動(dòng)態(tài)阻性負(fù)載產(chǎn)生較大的總諧波畸變率,多集中在 24 脈波整流產(chǎn)生的 24k ±1 次以及 2~8 次的低次諧波;阻值動(dòng)態(tài)范圍越大,低次諧波越嚴(yán)重。
關(guān)鍵詞:離子回旋共振加熱;高壓電源;動(dòng)態(tài)負(fù)載;總諧波畸變率
中圖分類號(hào):TM714 ;TN86 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1007-3175(2021)10-0007-05
Research on Harmonics of PSM Power Supply under Dynamic Load
LIN Hua-hui1, YANG Pu-qiong1,2
(1 School of Electrical Engineering, University of South China, Hengyang 421001, China;
2 The Key Laboratory of Magnetic Confinement Nuclear Fusion Research, University of South China, Hengyang 421001, China)
Abstract: Dynamic loads could cause harmonics. It might affect the quality of the power grid and endanger the safe operation of the system.This paper used MATLAB/Simulink to establish a PSM high-voltage power supply model for ion cyclotron resonance heating (ICRH).Herein, analyzed the harmonic content of different load characteristics under static and dynamic conditions and the characteristic subharmonic content generated by various loads under pure resistance.After comparing the harmonic content of each order, judge the general change trend of the load.The simulation results show that inductive and capacitive loads have little effect on THD, while dynamic resistive loads produce larger THD, mostly concentrated in the 24k ±1 order and 2~8th low-order harmonics generated by 24-pulse rectification.In addition,the larger the dynamic range of the resistance, the more serious the low-order harmonics.
Key words: ion cyclotron resonance heating (ICRH); high-voltage power supply; dynamic load; total harmonic distortion rate
參考文獻(xiàn)
[1] 萬寶年,徐國(guó)盛.EAST 超導(dǎo)托卡馬克[J]. 科學(xué)通報(bào),2015,60(23) :2157-2168.
[2] 嚴(yán)建成,劉永,周才品,等. 中國(guó)環(huán)流器二號(hào) A 裝置 (HL-2A) 工程研制[J]. 核聚變與等離子體物理,2004,24(4) :241-247.
[3] HOANG G T, BÉCOULET A, JACQUINOT J, et al.A lower hybrid current drive system for ITER[J].Nuclear Fusion,2009,49(7) :075001.
[4] HOLTKAMP N.An overview of the ITER project[J].Fusion Engineering and Design,2007,82(5) :427-434.
[5] 夏于洋,李青,毛曉惠,等.PSM 高壓電源系統(tǒng)模塊的計(jì)算分析[J]. 核聚變與等離子體物理,2021,41(1):56-60.
[6] 馬少翔.100 kV PSM 高壓電源相關(guān)技術(shù)研究和系統(tǒng)實(shí)現(xiàn)[D]. 武漢:華中科技大學(xué),2015.
[7] 夏令龍. 托卡馬克輔助加熱系統(tǒng)高壓電源若干關(guān)鍵技術(shù)研究[D]. 武漢:華中科技大學(xué),2015.
[8] 陸志鴻,王恩耀,曾建爾,等. HL-1M 裝置離子回旋共振加熱系統(tǒng)及初步實(shí)驗(yàn)[J] . 核聚變與等離子體物理,2000,20(1) :48-53.
[9] 郭征榮,龔學(xué)余,杜丹,等. 共軛 T 型回路結(jié)合單支節(jié)調(diào)配器時(shí) ICRH 天線系統(tǒng)的阻抗匹配過程分析[J]. 低溫物理學(xué)報(bào),2016,38(3) :76-80.
[10] 郎維川. 供電系統(tǒng)諧波的產(chǎn)生、危害及其防護(hù)對(duì)策[J]. 高電壓技術(shù),2002,28(6) :30-31.
[11] 王磊,趙燕平,黃懿赟,等.EAST 離子回旋共振加熱系統(tǒng)調(diào)制型高壓電源研究[J] . 核聚變與等離子體物理,2016,36(1) :49-54.
[12] 王念同,魏雪亮. 城市軌道交通 24 脈波牽引整流變電站網(wǎng)側(cè)諧波電流的分析[J]. 變壓器,2003,40(1):1-7.