多级快速投切电抗器控制区域联络线功率的技术方案研究

  目的  区域电网间的联络线路交换功率控制在合理范围是保障电网稳定的重要因素。但在一些极端运行方式下,联络线路的交换功率存在越限的风险,尤其新能源大规模并网后,联络线功率越限、大幅波动风险加剧,因此需要采取必要的潮流控制措施。  方法  比较了现有的主要的几类联络线路的潮流控制手段和各自的特性,提出了基于多级快速投切电抗器实现电网潮流的灵活控制的方法,并研究了具体的控制策略。  结果  最后基于某一区域电网联络线路上的应用,验证了多级快速投切电抗器在控制区域电网联络线路交换功率的作用。  结论  结果表明采用多级快速投切电抗器可以快速灵活的控制联络线路的潮流,其总体技术经济性更优。

Research on the Technical Solution of Multi-Stage Fast Switching Reactor Application on Regional Tie-Line Power Control

  Introduction  Control the exchanged power of the regional tie-lines within a reasonable range, which is an important factor to ensure the stability of the power network. However, under some extreme operation modes, the exchanged power of the tie-lines may exceed the limit, especially the large-scale of new energy sources into the power grid, the power of the tie-lines between regions may fluctuate greatly. Therefore, necessary power flow control measures should be taken.  Method  Compared the power flow control methods of several main types of tie-lines and their characteristics, a flexible power flow control method based on multi-stage rapid switching reactor was put forward, and the specific control strategy was studied.  Result  Finally, based on the application of a regional power grid Tie-lines, the function of multi-stage fast switching reactor in controlling the exchange power of regional power grid tie-line was verified.  Conclusion  The results show that the power flow of the tie-line can be controlled flexibly and quickly by using the multi-stage fast switching reactor, and the overall technical economy is better.