脉冲功率负载等效拓扑及潮流计算模型分析

doi:10.19595/j.cnki.1000-6753.tces.171757

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摘要脉冲功率负载的负荷特征呈现出冲击性、周期性和连续性特点,在电力电子化电力系统的负荷分布中具有一定的典型性。脉冲功率负载的工作方式给独立微电网的稳定运行带来极大挑战,为此,以现代电子雷达为例,分析了脉冲功率负载的工作模式和基本结构,提出了以三相不可控整流器级联Buck电路和直流开关负载为主电路的脉冲功率负载新型等效拓扑,建立了相应的潮流计算模型。分析结果表明,与相控整流器等效交直流能量转换装置的方法相比,采用新型等效拓扑可提高脉冲功率负载等效模拟的准确性;另一方面,采用所建立的潮流计算模型得出的系统潮流及负荷节点P-U曲线符合理论预期,验证了脉冲功率负载潮流模型的可行性。

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	严鋆
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	徐晔

关键词 ：脉冲功率负载, 不可控整流器, Buck电路, 潮流计算模型, 等效拓扑

Abstract：The load characteristic of pulsed power load (PPL), which is common in the power electronics dominated power system, demonstrates the feature of impact, periodicity and continuity. The working pattern of PPL brings the great challenges to the operation of isolated microgrid, and for this reason, this paper presents the study of a typical PPL, named modern electronic radar, by analyzing the working mode and basic structure. Then, a novel equivalent topology of PPL, which consists of an uncontrollable three-phase rectifier, a Buck circuit and a DC switching load, has been proposed, and the corresponding power-flow calculation model of PPL has been also established. The case-study results demonstrate that, on one hand, comparing with the conventional equivalent topology, which adopted the silicon controlled rectifier to represent the ac-dc energy exchanger, the novel equivalent topology of PPL could improve the accuracy of the equivalent simulation for PPL; on the other hand, the power-flow calculation model of PPL mentioned above is adopted in the power-flow analysis, and the corresponding power flow and node P-U curve is consistent with the theoretical expectations, thus the feasibility of the power-flow model for PPL is verified.

Key words： Pulsed power load uncontrollable rectifier Buck circuit power-flow calculation model equivalent topology

收稿日期: 2018-01-02 出版日期: 2018-12-17

PACS:

TM71

基金资助:国家自然科学基金（51507180）和江苏省自然科学基金（BK20170753）资助项目

作者简介: 严鋆男,1985年生,博士研究生,研究方向为独立微电网分析与保护。E-mail：yanjunnorton@126.com;黄克峰男,1986年生,博士,讲师,研究方向为电机与电力系统的分析。E-mail：kefenghuang@163.com（通信作者）

引用本文:

严鋆, 王金全, 黄克峰, 季少卫, 徐晔. 脉冲功率负载等效拓扑及潮流计算模型分析[J]. 电工技术学报, 2018, 33(23): 5523-5531. Yan Jun, Wang Jinquan, Huang Kefeng, Ji Shaowei, Xu Ye. Analysis of Equivalent Topology and Power-Flow Calculation Model for Pulsed Power Load. Transactions of China Electrotechnical Society, 2018, 33(23): 5523-5531.

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