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电网供电系统不平衡负载补偿设计仿真

电网供电系统不平衡负载补偿设计仿真

Design and Simulation of Unbalanced Load Compensation for Power Supply System

Design and Simulation of Unbalanced Load Compensation for Power Supply System

doi:
10.3969/j.issn.1006-9348.2017.12.017
摘要:
配电网中不平衡负载产生大量无功、负序和谐波电流,造成电力系统的电能大量损失,因此需要研究不平衡环境下静止无功补偿器对无功的补偿.三角形连接的链式SVG在无功补偿中发挥着重要的作用.对无功综合指令电流的获取决定着装置的无功补偿效率.传统的方法很少考虑其对无功、负序和谐波电流的综合补偿.因此利用零序环流通道的作用,通过计算相电流零序分量,推导出一种新的获取综合指令电流信号的方法.上述计算方法原理清楚,并且易于快速计算.最后,在Matlab/Simulink仿真环境下准确建立模型,仿真验证了上述方法的准确性.
Abstract:
The unbalanced load in the distribution network generates a large amount of reactive power,negative sequence and harmonic current,resulting in a large loss of power in the power system.Therefore,it is necessary to study the compensation of reactive power compensation in the unbalanced environment.The chained SVG of triangle connection plays an important role in reactive power compensation.The reactive power compensation efficiency of the device is determined by the acquisition of reactive current.Conventional methods rarely consider their comprehensive compensation of reactive power,negative sequence and harmonic currents.Therefore,using the function of the zero -sequence loop channel,a new method of obtaining the integrated command current signal is derived by calculating the zero-sequence component of the phase current.The calculation method is relatively clear to other methods,and is easy to calculate quickly.Finally,the model was established accurately under the Matlab/Simulink simulation environment,and the simulation verifies the accuracy of the method.
作者 卫云齐 智泽英
Author: WEI Yun-qi ZHI Ze-ying
作者单位 太原科技大学电子信息工程学院 太原030024
期 刊: 计算机仿真 ISTIC EI SCI PKU CSSCI
Journal: Computer Simulation
年,卷(期) 2017, 34(12)
分类号 TM615
关键词: 链式结构 知识脉络 零序环流 知识脉络 不平衡负载 知识脉络
Keywords: Cascade SVG Zero-sequence circulating current Unbalance load
机标分类号 TP3 TM7
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