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首页> 外文期刊>Electric power systems research >A novel voltage stability and quality index demonstrated on a low voltage distribution network with multifunctional energy storage systems
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A novel voltage stability and quality index demonstrated on a low voltage distribution network with multifunctional energy storage systems

机译：在具有多功能储能系统的低压配电网络上展示了一种新颖的电压稳定性和质量指标

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摘要

This work examines the effect of energy storage systems (ESSs) operation on the voltage stability and quality of the local power system. The variation of these two voltage dimensions is expressed in a collective manner by the novel voltage stability and quality index (VSQI). For the calculation of the VSQI, a complete voltage stability curve is required, and the coordinates associated with voltage stability and quality are identified. The distance between the abovementioned coordinates, that collectively indicates the effect of ESSs operation on the two voltage dimensions, is represented by the VSQI. The process for VSQI identification is repeated for each operating scenario, with the studied cases including grid operation prior to ESSs utilisation, grid support performed by a community level (CL) ESS, and grid operation with distributed (DIST) ESSs. The ESSs are powered by renewable energy sources (RESs), and a future scenario of 70% photovoltaic (PV) penetration was examined. Other ESSs applications presented in this work, include time-shifting of the energy produced by RESs, peak load shaving, and reducing the loading levels of transmission lines and of the substation transformer. The above stack of ESSs applications, highlights the multifunctional role of ESSs as support to the grid. A real low voltage (LV) distribution network located in south-east Queensland, Australia was employed for the study.
机译：这项工作研究了储能系统（ESS）的运行对本地电力系统的电压稳定性和质量的影响。这两个电压尺寸的变化通过新颖的电压稳定性和质量指数（VSQI）共同表示。为了计算VSQI，需要完整的电压稳定性曲线，并确定与电压稳定性和质量相关的坐标。 VSQI表示上述坐标之间的距离，该距离共同表示ESS操作对两个电压维的影响。对于每种操作方案，都将重复进行VSQI识别的过程，所研究的案例包括使用ESS之前的网格操作，由社区级别（CL）ESS执行的网格支持以及具有分布式（DIST）ESS的网格操作。 ESS由可再生能源（RES）供电，研究了70％的光伏（PV）渗透率的未来方案。这项工作中介绍的其他ESS应用程序包括RES产生的能量的时移，削峰负载以及降低传输线和变电站变压器的负载水平。上面的ESS应用程序堆栈强调了ESS作为网格支持的多功能角色。这项研究使用了位于澳大利亚昆士兰州东南部的真正的低压（LV）配电网络。

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