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Reactive Power Management for Voltage Rise Mitigation in Distribution Networks with Distributed Generation: a Command Governor Approach

机译:具有分布式发电的配电网电压上升电压缓解的无功:指挥调控方法

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High penetration of Distributed Generation (DG) in Medium Voltage (MV) power grids is usually a reason of abrupt voltage raises. In this respect critical scenarios are represented by both low demand conditions and high power production from renewable sources. In order to cope with the possibly resulting voltage limits violation, a typical adopted approach is the disconnection of the distributed generators or the curtailment of the generated power leading to several disadvantages. To address this issue an online management of the reactive power of distributed generators is presented. The approach is based on Command Governor (CG) ideas and is aimed at solving a constrained voltage regulation problem in both centralized and distributed ways. The approach foresees an active coordination between some controllable devices of the grid, e.g. distributed generators, MV/HV transformers, in order to maintain relevant system variables within prescribed operative constraints in response to unexpected adverse conditions. Simulation results show that the proposed approach is more effective than approaches suggested by the current Italian norms on reactive power compensation.
机译:在中压(MV)电网中的分布式发电(DG)的高穿透通常是突然电压升高的原因。在这方面,临界情景由可再生源的低需求条件和高功率生产来表示。为了应对可能导致的电压限制违规,典型的采用方法是分布式发电机的断开或产生产生的功率的削减,导致几个缺点。为了解决这个问题,提出了分布式发电机的无功功率的在线管理。该方法是基于命令调速器(CG)思想,并旨在解决集中式和分布式方式的受限电压调节问题。该方法预见到网格的某些可控设备之间的积极协调,例如,分布式发电机,MV / HV变压器,以保持在规定的操作系统内的相关系统变量以响应意外不利条件。仿真结果表明,该方法比目前意大利规范对无功补偿的方法更有效。

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