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| 摘要: |
| 提出了一种可在线应用的静态电压稳定裕度计算方法．首先基于计及负荷静态特性的节点静态电压稳定指标（VSI），用直线拟合VSI变化曲线．计算系统最大负荷系数，推导出负荷系数裕度指标，然后将此指标和发电机无功越界裕度指标配合使用．从而可以较好地对系统的负荷裕度进行在线估计．IEEE 30节点的仿真表明该方法应用简单、计算速度快．可用于电力系统运行状态的实时监控. |
| 关键词: 负荷裕度 静态电压稳定 在线监控 |
| DOI： |
| 分类号:TM712 |
| 基金项目:国家重点基础研究发展计划(973计划) |
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| On-line voltage stability monitoring for electric power system Part 2:On-line calculation of load margin |
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FU Xu WANG Xi-fan
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| Abstract: |
| A method for on-line static voltage stability margin calculation is presented.Based on the static voltage stability index VSI proposed in part one,linearization is further applied to VSI variation curve for calculating the maximal load coefficient.The load margin index LS is then deduced for on-line load margin evaluation in combination with generator var coefficient margin index GS.The proposed method is tested on IEEE 30-bus systems and the simulative results indicate that it is fast and effective for on-line power system state monitoring. |
| Key words: oad margin static voltage stability on-line monitoring |
