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Energy storage system control algorithm for voltage regulation with active and reactive power injection in low-voltage distribution network

机译：低压配电网电压调节能量存储系统控制算法

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摘要

The voltage drop affecting consumers at the end of distribution lines is one of the problems regarding power quality. The solutions applied to transmission lines are not fully effective in distribution lines, where line parameters are significantly high. In low-voltage distribution network, the reactive power compensation method is not as effective as active and reactive power compensation. This effect occurs on lines where the significant series resistance becomes remarkable in relation to the total line impedance. This paper presents the design and implementation of a four-wire, three-phase voltage source converter (VSC) with output current control for voltage regulation at the point of common coupling (PCC), using active and reactive power injection. A reactive power prioritization and minimization of active power strategy is proposed to overcome the problem of distribution line parameters. Digital design methodology is used to design the management controllers and loops, and a digital signal controller (DSC) is used for the entire implementation. The mathematical analysis results are validated using numerical simulation and proven with the construction of a 3.8 kVA prototype. The results showed that the converter accomplished an effective voltage regulation at the PCC with reduced active power.
机译：在分配线结束时影响消费者的电压降是关于电能质量的问题之一。应用于输电线路的溶液在配电线中没有完全有效，其中线参数明显高。在低压配电网中，无功功率补偿方法不如主动和无功补偿都有效。这种效果发生在线，其中显着的串联电阻与总线阻抗有关的显着性。本文介绍了四线三相电压源转换器（VSC）的设计和实现，具有输出电流控制，用于在公共耦合点（PCC）处的电压调节，使用主动和无功型电压。提出了一种无功功率优先级和有源功率策略的最小化以克服分配线参数的问题。数字设计方法用于设计管理控制器和循环，数字信号控制器（DSC）用于整个实现。使用数值模拟验证数学分析结果，并以3.8 kVA原型的构建证明。结果表明，该转换器在PCC下实现了有效电压调节，具有降低的电力。

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