Abstract While renewable energy resources have provided more flexibility in operation of power system, it may threaten the security of the power system during transient phenomena. Previous investigation on the power system with high penetration of inverter based connected (IBC) distributed generations (DG) reveal that this type of DG has negative influence on the transient stability margin of the power system (Seungchan et al., 2018). An optimization framework is proposed in this paper, in which the negative effects of IBC type of DGs on the transient stability margin of the power system is minimized. More specifically, this paper proposes a new objective function (OF) to distribute the IBC type of DGs that have minimum deterioration of transient stability margin. To such aim, an improved index based on the kinetic energy is introduced which considers IBC type of DGs based on virtual synchronous generator concept. To calculate index, equal area criterion (EAC) and sensitivity analysis are respectively used for extracted critical kinetic energy (CKE) and consequently to take into account the effect of fault trajectory. The IBC type of DGs in this investigation includes photovoltaic and electrical vehicles. The proposed framework is applied on the IEEE 14-bus and 30-bus test system and further discussed during several contingencies and fault conditions.

中文翻译：

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逆变器接入DGs的优化配置：最小化电力系统暂态稳定性恶化的目标函数

摘要 可再生能源虽然为电力系统的运行提供了更大的灵活性，但在瞬态现象期间可能会威胁电力系统的安全。先前对基于逆变器的互联 (IBC) 分布式发电 (DG) 高渗透电力系统的调查表明，这种类型的 DG 对电力系统的暂态稳定裕度具有负面影响（Seungchan 等，2018）。本文提出了一种优化框架，其中IBC类型的DGs对电力系统暂态稳定裕度的负面影响被最小化。更具体地说，本文提出了一个新的目标函数 (OF) 来分配具有最小瞬态稳定裕度恶化的 IBC 类型的 DG。为了这样的目标，引入了基于动能的改进指标，该指标考虑了基于虚拟同步发电机概念的 IBC 型 DG。在计算指标时，分别采用等面积准则（EAC）和灵敏度分析提取临界动能（CKE），从而考虑到断层轨迹的影响。本次调查中 IBC 类型的 DG 包括光伏和电动汽车。提议的框架应用于 IEEE 14 总线和 30 总线测试系统，并在几种突发事件和故障条件下进一步讨论。等面积准则（EAC）和灵敏度分析分别用于提取临界动能（CKE），从而考虑到断层轨迹的影响。本次调查中 IBC 类型的 DG 包括光伏和电动汽车。提议的框架应用于 IEEE 14 总线和 30 总线测试系统，并在几种突发事件和故障条件下进一步讨论。等面积准则（EAC）和灵敏度分析分别用于提取临界动能（CKE），从而考虑到断层轨迹的影响。本次调查中 IBC 类型的 DG 包括光伏和电动汽车。提议的框架应用于 IEEE 14 总线和 30 总线测试系统，并在几种突发事件和故障条件下进一步讨论。