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首页> 外文会议>Asia Conference on Power and Electrical Engineering >Evaluation Method of Static Voltage Stability in Multi-infeed HVDC System during Power System Restoration
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Evaluation Method of Static Voltage Stability in Multi-infeed HVDC System during Power System Restoration

机译：电力系统恢复中多馈HVDC系统静态电压稳定性的评估方法

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摘要

Considering the coordination of restoration path selection and power recovery control, this paper proposes a static voltage stability evaluation method for multi-infeed HVDC (MIDC) system. Firstly, a multi-infeed comprehensive short circuit ratio (MISCR) index is applied to evaluate the voltage stability at the converter bus. The continuous power flow method is used to evaluate the static voltage stability margin of other AC nodes, which can not only be used as the safety constraint of power recovery, but also give the weak nodes of the system and guide the power recovery control. Then, the influence of restoration path on HVDC support capability is studied, a multi-infeed short circuit ratio offset (MSCRO) index is proposed to optimize the restoration path. When the restoration path is determined, MISCR can be used to calculate the maximum DC power that can be accessed and the voltage stability margin is obtained by continuous power flow method. Therefore, the purpose of making use of DC power to speed up the recovery process and ensure the safety of recovery is achieved. The IEEE 39 buses test system is taken as an example to verify the feasibility and effectiveness of the proposed method.
机译：考虑到恢复路径选择与功率恢复控制的协调，提出了一种多馈HVDC系统的静态电压稳定性评估方法。首先，采用多馈综合短路比（MISCR）指数来评估转换器总线上的电压稳定性。连续潮流法用于评估其他交流节点的静态电压稳定裕度，不仅可以作为电力恢复的安全约束，而且可以给出系统的弱节点，指导电力恢复控制。然后，研究了恢复路径对高压直流输电支持能力的影响，提出了多馈入短路比补偿（MSCRO）指标来优化恢复路径。确定恢复路径后，可以使用MISCR来计算可访问的最大DC功率，并通过连续潮流法获得电压稳定裕度。因此，达到了利用直流电源来加快恢复过程并确保恢复安全性的目的。以IEEE 39总线测试系统为例，验证了该方法的可行性和有效性。

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