適用于架空線路的雙極混合MMC-HVDC拓?fù)?/H1>
發(fā)布時(shí)間：2018-10-19 14:23
【摘要】：為應(yīng)對(duì)柔性直流輸電在遠(yuǎn)距離大容量架空線輸電領(lǐng)域應(yīng)用問(wèn)題,基于鉗位雙子模塊和雙晶閘管子模塊拓?fù)錁?gòu)成的兩種模塊化多電平換流器,設(shè)計(jì)了串聯(lián)雙極混合直流輸電系統(tǒng),既提高了輸電容量,又能緩解單種拓?fù)淠芎妮^大或直流故障抑制時(shí)間較長(zhǎng)問(wèn)題。重點(diǎn)分析了雙極混合拓?fù)湓诓煌绷鞴收舷碌戎惦娐泛椭绷鞴收洗┰綑C(jī)理及其抑制特性。最后,在PSCAD/EMTDC仿真環(huán)境下搭建雙極混合直流輸電模型,對(duì)系統(tǒng)穩(wěn)態(tài)運(yùn)行工況和直流故障穿越特性進(jìn)行了對(duì)比研究。仿真結(jié)果表明,雙極混合系統(tǒng)既體現(xiàn)出靈活多樣的穩(wěn)態(tài)運(yùn)行特性,又具有直流故障穿越與快速恢復(fù)能力,較好地適用于遠(yuǎn)距離大容量架空線路輸電應(yīng)用領(lǐng)域。
[Abstract]:In order to deal with the application of flexible direct current transmission in the field of long-distance large capacity overhead transmission, a series bipolar hybrid DC transmission system is designed based on two modularized multilevel converters, which are composed of two modular multilevel converters based on the topology of clamped double submodules and double thyristor submodules. It can not only increase the transmission capacity, but also alleviate the problem of large energy consumption of single topology and long DC fault suppression time. The equivalent circuit of bipolar hybrid topology under different DC faults, the mechanism of DC fault traversing and its suppression characteristics are analyzed. Finally, a bipolar hybrid DC transmission model is built under the PSCAD/EMTDC simulation environment, and the steady-state operating conditions and DC fault traversing characteristics of the system are compared and studied. The simulation results show that the bipolar hybrid system not only embodies flexible and diverse steady-state operation characteristics, but also has the ability of DC fault traversing and fast recovery, which is suitable for long-distance and large-capacity overhead transmission applications.
【作者單位】： 新能源電力系統(tǒng)國(guó)家重點(diǎn)實(shí)驗(yàn)室(華北電力大學(xué));國(guó)網(wǎng)唐山供電公司;
【基金】：國(guó)家高技術(shù)研究發(fā)展計(jì)劃(863計(jì)劃)資助項(xiàng)目(2015AA050603) 河北省自然科學(xué)基金資助項(xiàng)目(E2015502046)~~
【分類(lèi)號(hào)】：TM721.1
，
本文編號(hào)：2281400
本文鏈接：http://sikaile.net/kejilunwen/dianlidianqilunwen/2281400.html
[Abstract]:In order to deal with the application of flexible direct current transmission in the field of long-distance large capacity overhead transmission, a series bipolar hybrid DC transmission system is designed based on two modularized multilevel converters, which are composed of two modular multilevel converters based on the topology of clamped double submodules and double thyristor submodules. It can not only increase the transmission capacity, but also alleviate the problem of large energy consumption of single topology and long DC fault suppression time. The equivalent circuit of bipolar hybrid topology under different DC faults, the mechanism of DC fault traversing and its suppression characteristics are analyzed. Finally, a bipolar hybrid DC transmission model is built under the PSCAD/EMTDC simulation environment, and the steady-state operating conditions and DC fault traversing characteristics of the system are compared and studied. The simulation results show that the bipolar hybrid system not only embodies flexible and diverse steady-state operation characteristics, but also has the ability of DC fault traversing and fast recovery, which is suitable for long-distance and large-capacity overhead transmission applications.
【作者單位】： 新能源電力系統(tǒng)國(guó)家重點(diǎn)實(shí)驗(yàn)室(華北電力大學(xué));國(guó)網(wǎng)唐山供電公司;
【基金】：國(guó)家高技術(shù)研究發(fā)展計(jì)劃(863計(jì)劃)資助項(xiàng)目(2015AA050603) 河北省自然科學(xué)基金資助項(xiàng)目(E2015502046)~~
【分類(lèi)號(hào)】：TM721.1
，
本文編號(hào)：2281400
本文鏈接：http://sikaile.net/kejilunwen/dianlidianqilunwen/2281400.html
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