| 引用本文: | 张开宇,崔勇,庄侃沁,等.加装同步调相机对多直流馈入受端电网的影响分析[J].电力系统保护与控制,2017,45(22):139-143.[点击复制] |
| ZHANG Kaiyu,CUI Yong,ZHUANG Kanqin,et al.Analysis of the influence of synchronous condensers on receiving-end grid with multi-infeed HVDC[J].Power System Protection and Control,2017,45(22):139-143[点击复制] |
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| 摘要: |
| 随着直流的大规模馈入，受端电网运行特性发生显著变化，大量本地机组关停，导致动态无功储备和电压支撑不足问题凸显，电网承受扰动能力下降，因此迫切要求配置同步调相机等动态无功补偿装置。通过仿真软件对电网加装调相机前后的电压稳定裕度、引起直流换相失败的交流故障范围及短路电流水平进行仿真计算和比较分析，全面评估了多直流馈入受端电网中时加装调相机后对系统运行的影响。该研究为同步调相机布点配置和参数选取提供有效参考和依据，有助于推进多直流馈入大受端电网时同步调相机配置工作的开展。 |
| 关键词: 同步调相机 多直流馈入 受端电网 电压稳定 换相失败 短路电流 |
| DOI：10.7667/PSPC160632 |
| 投稿时间：2016-03-31修订日期：2016-12-25 |
| 基金项目:国家电网公司科技项目(52094016000X)“直流控制保护与受端电网配合性能提升技术研究” |
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| Analysis of the influence of synchronous condensers on receiving-end grid with multi-infeed HVDC |
| ZHANG Kaiyu,CUI Yong,ZHUANG Kanqin,MIAO Yuancheng,YANG Zenghui,FENG Yuyao,ZHANG Qiqi,YU Yinghui |
| (State Grid Shanghai Electric Power Research Institute, Shanghai 200437, China;East Branch of State Grid Corporation of China, Shanghai 200120, China) |
| Abstract: |
| As multi-infeed HVDC systems are integrated into power grid, the operation characteristics of the receiving-end grid have changed remarkably. A large quantity of local generators have to be shut down, resulting in the shortage of dynamic reactive power reserve and voltage support and the downfall of power grid withstanding disturbance capacity. Therefore, it is urgent to install dynamic reactive compensation device such as synchronous compensators. The voltage stability margin, AC fault range causing DC mutation failure, and short-circuit current level before and after installing compensator in the power grid are simulated and comparatively analyzed through simulation software, and the influence of installing compensator in multi-feed receiving-end power grid on system operation is evaluated fully. The research provides effective reference for allocation and parameters selection of synchronouscompensator and makes for promoting the development of synchronous compensator allocation for multi-feed receiving-end power grid. |
| Key words: synchronous compensator multi-infeed receiving-end power grid voltage stability commutation failure short circuit current |
