溪洛渡直流四极闭锁失稳特性分析及对策研究

Analysis on Unstability Characteristic of Xiluodu DC Quadrupole and Research on Countermeasures

溪洛渡直流四极同时闭锁稳控装置拒动情况下,大量潮流涌向交流系统,导致系统功角失稳。针对此问题,对溪洛渡直流四极闭锁后失稳特性进行研究,对振荡中心进行判别,并对失步解列装置判别情况及解列装置动作后系统稳定情况进行仿真分析,根据仿真研究结果及失步解列装置配置现状提出相应建议,建议在永丰站增设失步解列装置,并对现有两广断面失步解列装置判据进行优化。

A large number of flow will surge up to the alternative current（AC）system which may cause power angle unstabili-ty in the case of refusal to move of the stability control system when Xiluodu DC quadrupole shutting at the same time. Ai-ming at the above problems,this paper studies unstability characteristic after interlock of Xiluodu DC quadrupole,discrimi-nates the oscillation center and carries out simulation analysis on discrimination of the out-of-step separation device and sta-bility of the system after action of the separation device. According to results of simulation analysis and configuration status quo of the out-of-step separation device,relevant suggestions were proposed to increase construction of out-of-step separa-tion device in Yongfeng substation and optimize criteria for out-of-step separation device of existing Guangdong and Guangxi section.