Short Circuit Current Constrained UC in High IBG-Penetrated Power Systems
Short Circuit Current Constrained UC in High IBG-Penetrated Power Systems
复制标题
高 IBG 穿透电力系统中的短路电流约束 UC
DOI：
10.1109/tpwrs.2021.3053074
复制
发表时间：
2021
影响因子：
6.6
通讯作者：
Fei Teng
中科院分区：
文献类型：
--
作者：
Zhongda Chu;Fei Teng
逆变发电机在电力系统中的应用越来越广泛。由于电力电子（PE）的热额定值要求很高，它们对系统短路电流（SCC）的贡献远小于传统同步发电机（SG），从而降低了系统强度，并对系统保护和稳定性提出了挑战。提出了一种具有SCC约束的高IBG穿透系统的机组组合（UC）模型，以确保最小的运行成本，同时保持系统中每个节点的SCC水平。SCC从同步发电机以及IBG明确建模的制定导致SCC约束涉及决策相关矩阵求逆。这个高度非线性的约束被进一步保守地重新表述为线性形式。通过对IEEE 30节点和118节点系统的仿真，证明了SCC约束对系统运行的影响及其与频率调节的相互作用。
Inverter Based Generators (IBGs) have been increasing significantly in power systems. Due to the demanding thermal rating of Power Electronics (PE), their contribution to the system Short Circuit Current (SCC) is much less than that from the conventional Synchronous Generators (SGs) thus reducing the system strength and posing challenges to system protection and stability. This paper proposes a Unit Commitment (UC) model with SCC constraint in high IBG-penetrated systems to ensure minimum operation cost while maintaining the SCC level at each bus in the system. The SCC from synchronous generators as well as the IBGs are explicitly modeled in the formulation leading to an SCC constraint involving decision-dependent matrix inverse. This highly nonlinear constraint is further reformulated into linear form conservatively. The influence of the SCC constraint on the system operation and its interaction with the frequency regulation are demonstrated through simulations on IEEE 30- and 118-bus systems.
一种具有内置短路故障电流能力的电网逆变器功率模块
影响因子：
6.7
作者：
Shao W
通讯作者：
Shao W