超导储能提高电力系统暂态稳定性理论探讨

超导储能装置（Superconducting Magnetic Energy Storage devices，SMES）现已在电力系统中获得了越来越多的应用。对储能装置串并联接入系统的2种情况进行分析，通过理论推导得出了储能装置的加入可以提高线路输送容量以及提高系统暂态稳定裕度的结论，探讨论证了储能技术提高电力系统暂态稳定性的理论依据。最后，在四机两区域系统上，进行了仿真研究，验证了超导储能装置在改善电力系统暂态稳定性，抑制系统振荡方面的效果。

Study on Theory Basis of Enhancing Power System Transient Stability by Superconducting Magnetic Energy Storage Device

The Superconducting Magnetic Energy Storage Device (SMES) has been utilized in the modern power system in many ways. This paper looks into both the series connection and parallel connection of the SMES in the power system and their effects in improving the line transmission capacity and the power system transient stability. The theoretical deduction carried out in the paper concludes that addition of the SMES helps improve the capacity and enhance the transient stability margin, with the theory basis explored and given. Finally, the fault simulation study is made in a two-area and four-machine system and verifies the positive effects of the SMES in improving the system transient stability and constraining the system vibration.