Integration of Dynamic Voltage Support Capability of Distributed Photovoltaic Generation Systems for Transient Stability Improvement of Power Systems
Integration of Dynamic Voltage Support Capability of Distributed Photovoltaic Generation Systems for Transient Stability Improvement of Power Systems
复制标题
集成分布式光伏发电系统动态电压保障能力，提高电力系统暂态稳定性
DOI：
10.1109/isgteurope.2018.8571627
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
T. Nanahara
中科院分区：
文献类型：
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作者：
K. Kawabe;T. Nanahara
在本文中，我们研究了光伏发电系统的动态电压支持（DVS）能力对暂态稳定性的影响。首先，我们通过检查无功功率注入和同步发电机功率输出变化之间的灵敏度系数来研究 DVS 能力的影响。结果表明，DVS 能力可能会恶化暂态稳定性，具体取决于光伏系统和故障的位置。接下来，我们提出了一种使用光伏系统的基于事件的应急控制系统。该方法通过检查每个光伏系统的控制动作是否可以使惯性中心参考系中的关键发电机减速，来选择光伏系统在故障发生前激活 DVS 功能。数值算例表明，与激活所有光伏系统的DVS能力的情况相比，激活所选光伏系统的DVS能力可以进一步提高暂态稳定性。
In this paper, we investigate impact of dynamic voltage support (DVS) capability of photovoltaic (PV) power generation systems on the transient stability. First, we investigate the effect of the DVS capability by checking sensitivity coefficients between the reactive power injection and the change in the power output of the synchronous generators. The results show that the DVS capability may deteriorate the transient stability depending on the location of the PV system and the fault. Next, we propose an event-based emergency control system using PV systems. The proposed method selects the PV systems to activate the DVS capability in advance to a fault by checking whether or not the control action by each PV system can decelerates the critical generator in center of inertia reference frame. Numerical examples show that activating the DVS capability of the selected PV systems can further improves the transient stability compared with the case of activating the DVS capability of all the PV systems.