發(fā)布時(shí)間：2018-09-14 13:51

【摘要】：目前大規(guī)模風(fēng)電場均采用風(fēng)火打捆直流孤島外送的輸送方式,而對(duì)于沒有風(fēng)火打捆條件的風(fēng)場,特別是海上風(fēng)電場,采用風(fēng)火打捆方式輸送風(fēng)電將會(huì)大大增加投資,甚至是不可行的。考慮到晶閘管器件在整流側(cè)的優(yōu)點(diǎn)以及在逆變側(cè)容易發(fā)生換相失敗故障,結(jié)合IGBT的全控特性,提出了受端多端的混合直流系統(tǒng)輸送風(fēng)電的控制策略。該策略整流側(cè)采用傳統(tǒng)直流器件,逆變側(cè)采用VSC器件,根據(jù)兩者之間的特性,給出了拓?fù)鋱D和控制流程圖,提出了主從控制方式。該策略既充分利用了整流側(cè)傳統(tǒng)器件的容量,也利用了VSC的可控特性,從而實(shí)現(xiàn)將波動(dòng)的風(fēng)電輸送至負(fù)荷中心。某實(shí)際風(fēng)電場的規(guī)模數(shù)據(jù)搭建了仿真模型,并對(duì)仿真結(jié)果進(jìn)行分析。仿真結(jié)果驗(yàn)證所提策略的有效性。
[Abstract]:At present, wind and fire bundles are used in large scale wind farms to deliver wind power out of isolated islands. For wind fields without wind and fire bundles, especially offshore wind farms, the use of wind and fire bundles will greatly increase the investment in the transmission of wind power. Not even feasible. Considering the advantages of thyristor devices on the rectifier side and the fault of commutation failure on the inverter side, combined with the full control characteristics of IGBT, the control strategy for the transmission of wind power in the multi-terminal hybrid DC system is proposed. The conventional DC device is used in the rectifier side of the strategy, and the VSC device is used in the inverter side. According to the characteristics between the two devices, the topology diagram and control flow chart are given, and the master-slave control mode is proposed. This strategy not only makes full use of the capacity of the traditional device on the rectifier side, but also utilizes the controllable characteristics of the VSC, so that the fluctuating wind power can be transported to the load center. The simulation model of scale data of a wind farm is built, and the simulation results are analyzed. Simulation results verify the effectiveness of the proposed strategy.
【作者單位】： 國網(wǎng)冀北電力有限公司技能培訓(xùn)中心;
【分類號(hào)】：TM721.1;TM614
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本文編號(hào)：2242892