D-STATCOM适应DG波动配电网的滞后策略

L. Zhichao, Wei Yuanqing, Luo Busheng, Liu Xuan, Yan Haipeng
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引用次数: 0

摘要

为使D-STATCOM适应有波动DG的配电网,本文通过建立有波动DG接入的配网模型,研究了D-STATCOM的无功功率、DG与目标电压之间的关系。然后,基于电压调节系数,提出了D-STATCOM的无功-电压滞回运行策略,并给出了不同运行模式之间的切换条件。最后,基于随机DG输出数据,验证了所提策略的有效性。结果表明,D-STATCOM滞回策略能有效降低配电网运行状态随机变化时无功功率和电压的可变性,在提高DSTATCOM的无功裕度的同时,还能降低网损。
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Hysteretic Strategy of D-STATCOM Adapting to the Distribution Network with Fluctuant DG
To make D-STATCOM adapt to the distribution network with fluctuant distribution generators (DG), this paper studies the relationship between reactive power, DG and target voltage of D-STATCOM by establishing the model of the distribution network equipped with D-STATCOM, which also has fluctuation DG accessed. Then, based on the voltage adjustment coefficient, the reactive power-voltage hysteresis operation strategy of D-STATCOM is proposed and the switching condition between different operating modes is given. Finally, based on the random DG output data, the effectiveness of the proposed strategy is verified. The results show that the D-STATCOM hysteresis strategy can effectively reduce the variability of reactive power and voltage when the distribution network operating status changes randomly, in improving the reactive power margin of DSTATCOM, but also reduce network loss.
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