SMES抑制电力系统功率振荡的控制策略研究

发布时间：2018-04-15 17:59

本文选题：电力系统 + 超导磁储能　；参考：《电网技术》2014年11期

【摘要】：为实现超导磁储能装置(superconducting magnetic energy storage,SMES)对电力系统功率的准确跟踪与快速补偿,并有效抑制系统的功率振荡,首先分析了包含SMES的单机系统的功角特性,基于系统的能量函数,以提高系统阻尼为目标,提出了以SMES接入点电压及其变化率为控制变量的导纳控制方法数学模型。与传统的以接入点电压幅值或相角做控制变量的控制方法不同,导纳控制方法不仅与接入点电压幅值有关,还与其变化速度有关,因而可提高SMES响应的灵敏度和精度。最后,通过算例验证了SMES抑制单机无穷大系统功率振荡的效果,结果表明该控制方法不仅可以有效抑制功率振荡,而且能使系统迅速恢复稳定状态,从而能提高电力系统的运行稳定性。
[Abstract]:In order to realize the accurate tracking and fast compensation of power system by superconducting magnetic energy storage device, and to restrain the power oscillation of power system effectively, the power angle characteristic of single machine system including SMES is analyzed firstly, based on the energy function of the system.Aiming at increasing system damping, a mathematical model of admittance control is proposed, which takes SMES access point voltage and its change rate as control variables.The admittance control method is different from the traditional control method in which the voltage amplitude or phase angle of the access point is used as the control variable. The admittance control method is not only related to the voltage amplitude of the access point, but also to its changing speed, so it can improve the sensitivity and accuracy of the SMES response.Finally, an example is given to verify the effectiveness of SMES in suppressing the power oscillation of a single-machine infinite bus system. The results show that the proposed control method can not only suppress the power oscillation effectively, but also restore the stable state of the system quickly.Thus, the operation stability of power system can be improved.
【作者单位】：西华大学安德校区电气工程系;西南交通大学电气工程学院;
【基金】：国家863高技术基金项目(2012AA050208) 国家自然科学基金项目(51347007,51477143)~~
【分类号】：TM712

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