Stochastic Transmission Impedance Control for Enhanced Wind Energy Integration
Stochastic Transmission Impedance Control for Enhanced Wind Energy Integration
复制标题
用于增强风能整合的随机传输阻抗控制
DOI：
10.1109/tste.2017.2770129
复制
发表时间：
2018
影响因子：
8.8
通讯作者：
M. Parvania
中科院分区：
文献类型：
--
作者：
Yuanrui Sang;M. Sahraei;M. Parvania
近年来，美国可再生能源供应量大幅增加，其中风能增长最快。由于电网的设计不能处理高水平的间歇性发电，因此在许多区域输电组织中普遍实施了非自愿弃风。输电拥堵是主要障碍之一，它阻碍了所产生的风能的充分输送。解决这个问题的一个明显但成本极高的解决方案是建造新的输电线路。或者，可以使用可变阻抗灵活交流输电系统（FACTS）设备来增强现有输电系统的传输能力。本文提出了一个两阶段的随机优化模型，将FACTS纳入电力系统运行的系统具有高水平的风穿透。第一阶段确定一个最佳的基地调度，而第二阶段发现FACTS灵活性和运营储备的最佳部署为每个风的情况。利用该模型，研究了FACTS运行对风电并网的影响。RTS-96系统的仿真研究验证了该方法在降低运行成本和弃风方面的有效性。所提出的模型也是计算效率高的，因为采用了线性FACTS模型。
In recent years, renewable energy supply in the U.S. has increased dramatically, among which wind energy has experienced the largest growth. Since the grid is not designed to handle high levels of intermittent generation, involuntary wind curtailment has been implemented commonly in many regional transmission organizations. Transmission congestion is one of the main barriers, which avoids full delivery of the produced wind energy. An obvious but extremely costly solution to this problem is building new transmission lines. Alternatively, transfer capability over the existing transmission system can be enhanced using variable-impedance flexible ac transmission system (FACTS) devices. This paper proposes a two-stage stochastic optimization model for integrating FACTS into power system operation for a system with high levels of wind penetration. The first stage identifies an optimal base dispatch, while the second stage finds the optimal deployment of FACTS flexibilities and operational reserves for each wind scenario. Using this model, the paper studies the impacts of FACTS operation on wind energy integration. The simulation studies on an RTS-96 system verify the effectiveness of the proposed method in reducing the operation cost as well as wind curtailment. The proposed model is also computationally-efficient, as a linear FACTS model is employed.