Implementing Volt-Var Control in Meshed Low Voltage Grids

Rohit A Jinsiwale, Sathish Jayaraman, R. Kandula, F. Lambert, D. Divan, A. Reid, P. Day
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引用次数: 1

Abstract

Hyper-dense urban areas often employ meshed power grids to increase redundancy, resiliency and contingency tolerance. Transformer load balancing and voltage profile management are key concerns for such networks. Furthermore, the impedance of the network is much lower than traditional radial distribution systems making the fault current levels extremely high. Traditional FACTS based Volt-VAr approaches fail owing to the fault current levels as well as the space and environmental constraints for this application. This paper proposes a new concept called Stacked Isolated Voltage Optimization Modules (SIVOM), which utilizes coaxial winding transformers to achieve power flow control as well as Volt-Var control. The efficacy of the approach has been demonstrated through simulations on a synthetic low voltage meshed grid. Experimental verification on a laboratory prototype is also presented in this paper. The fail-normal approach taken here ensures that the system's operation is not affected by faults in the modules.
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在分网低压电网中实现伏无控制
高密度城市地区通常采用网状电网来增加冗余、弹性和应急容忍度。变压器负载平衡和电压分布管理是这类网络的关键问题。此外,该网络的阻抗比传统的径向配电系统低得多,使得故障电流水平非常高。由于故障电流水平以及空间和环境的限制,传统的基于FACTS的Volt-VAr方法失败了。本文提出了堆叠隔离电压优化模块(SIVOM)的概念,利用同轴绕组变压器实现潮流控制和伏安控制。通过对低压综合网格的仿真,验证了该方法的有效性。本文还对实验室样机进行了实验验证。这里采用的故障-正常方法可确保系统的运行不受模块故障的影响。
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