Grid Interconnection Modeling of Inverter Based Resources (IBR) Plant for Transient Analysis
Grid Interconnection Modeling of Inverter Based Resources (IBR) Plant for Transient Analysis
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DOI：
10.3390/en16073211
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发表时间：
2023-04
期刊：
影响因子：
3.2
通讯作者：
H. Das;Shuhui Li;Shahinur Rahman
中科院分区：
文献类型：
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作者：
H. Das;Shuhui Li;Shahinur Rahman
基于逆变器的资源(IBR)渗透率的提高正在改变世界各地电网的动态性能。IBR现在越来越多地作为IBR工厂在单一连接点整合到电网中。由于每个逆变器模型的复杂性和动态性，在IBR装置中建立和分析每个逆变器的全复杂模型是不现实的。此外，模拟包括所有IBR的详细模型的大型工厂将需要较高的计算资源以及较长的模拟时间。这是新的IEEE标准2800-2022中解决的主要问题。本文提出了一种新的IBR对象建模方法，该方法能够捕捉对象级的暂态特性，在逆变器级别进行详细的IBR控制，以及在对象结构中多个IBR组之间的相互作用，以及将IBR连接到电网的集热器系统。该厂的IBR采用电压型逆变器拓扑和并网滤波器相结合的方式。IBR的控制结构包括级联环控制，在dq参考系中设计了内环电流控制和外环功率控制，电网同步采用闭环锁相环。首先进行了数学研究，以建立考虑IBR工厂中活性IBR的不同运行场景的聚合工厂模型。然后，建立了电站的电磁暂态仿真(EMT)模型，研究了电站在不同运行场景下的动态性能。将聚合对象模型的性能与详细对象模型的性能进行了比较，证明了所提策略的有效性。结果表明，从工厂的角度来看，聚合的EMT仿真模型提供的结果与详细模型几乎相同，而运行时间/计算负担要低得多。
The increase in penetration levels of inverter-based resources (IBRs) is changing the dynamic performance of power grids of different parts of the world. IBRs are now being more and more integrated into the grid at a single connection point as an IBR plant. Due to the complex nature and dynamicity of each inverter model, it is not realistic to build and analyze full complex models of each inverter in the IBR plant. Moreover, simulating a large plant including detailed models of all the IBRs would require high computing resources as well as a long simulation time. This has been the main issue addressed in the new IEEE Std 2800-2022. This paper proposes a novel approach to model an IBR plant, which can capture the transient nature at the plant level, detailed IBR control at the inverter level, interactions of multiple IBR groups in a plant structure, and a collector system connecting the IBRs to the grid. The IBRs in the plant use a voltage source inverter topology combined with a grid-connected filter. The control structure of the IBR includes a cascaded loop control where an inner current control and outer power control are designed in the dq-reference frame, and a closed-loop phase-locked loop is used for the grid synchronization. The mathematical study is conducted first to develop aggregated plant models considering different operating scenarios of active IBRs in an IBR plant. Then, an electromagnetic transient simulation (EMT) model of the plant is developed to investigate the plant’s dynamic performance under different operating scenarios. The performance of the aggregated plant model is compared with that of a detailed plant model to prove the effectiveness of the proposed strategy. The results show that the aggregated EMT simulation model provides almost the same result as the detailed model from the plant perspective while the running time/computation burden is much lower.