调相机在±800 kV特高压直流换流站中的应用研究

Application of Synchronous Compensators in ± 800 kV UHVDC Converter Station

随着特高压直流技术的飞速发展,以及全球能源互联网的扎实推进,外电入鲁政策送来的有功功率规模成倍增长。但作为受端的山东电网地区间的动态无功储备下降和电压支撑不足的矛盾愈发突出,如何确保受端电网电压稳定成为大电网安全的重要课题之一。在"大直流输电,强无功支撑"的理论要求下,在沂南换流站应用调相机进行无功补偿,结果表明,调相机可有效提高受端电网支撑能力,稳定电压水平,降低直流系统换相失败概率。

With the rapid development of HVDC technology and the solid progress of global energy internet,the policy for importing electrical power has made the active power transmitted into Shandong province doubled.But dynamic reactive power reservation and insufficient voltage drop support contradictions become more prominent in Shandong power grid as the receiving end of the electric power grid.The counter measures to ensure that the end grid voltage stability has become one of the main topic of large grid security.Under the theoretical requirements of"Big HVDC,Strong reactive power supporting",the synchronous compensator is used to compensate reactive power in Yinan converter station.The results show that the synchronous compensator can improve the process capability,stabilize the voltage level and reduce the failure probability of DC system.