DG并网对暂态电压扰动方向判定的影响及其校正算法

发布时间：2018-04-21 11:05

  本文选题：分布式电源 + 电能质量　； 参考：《电工技术学报》2017年23期

【摘要】：计及新能源分布式电源(DG)并网对智能配电网的影响,构建了一种含DG配电网的可延展通用模型。基于模型结构等效变换,分析了引起电能质量监测仪方向误判的影响因素,针对电压暂降型或电压暂升型的电能质量(PQ)扰动源,提出了DG并网对PQ扰动方向判定的影响规律,进而提出了一种基于规律校正的PQ扰动方向判定算法。将多个DG接入IEEE 13和IEEE 34模型,Matlab仿真表明,该算法能提高PQ扰动方向判定的准确率,并具有简明清晰、抗噪声能力强等优点。
[Abstract]:Considering the influence of new energy distributed generation (DG) on smart distribution network, a general extensible model with DG is constructed. Based on the equivalent transformation of the model structure, this paper analyzes the influencing factors that cause the misjudgment of the direction of the power quality monitor. In view of the power quality disturbance sources of voltage sag or voltage surge, the influence of DG grid connection on the determination of the PQ disturbance direction is put forward. Furthermore, a PQ disturbance direction decision algorithm based on law correction is proposed. The simulation results of IEEE 13 and IEEE 34 model show that the algorithm can improve the accuracy of PQ disturbance direction determination, and has the advantages of simplicity and clarity, strong anti-noise ability and so on.
【作者单位】： 浙江工业大学信息工程学院;
【基金】：国家自然科学基金(51507153) 浙江省自然科学基金(LY17E070005) 浙江省高校实验室工作研究项目(YB201633)资助
【分类号】：TM711
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本文编号：1782168