| 500 kV苏南UPFC接入对距离保护的影响及应对策略 |
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| 作者姓名： | 瞿峰 邓凯 张赟 钱伟 周强 孔祥平 |
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| 作者单位： | 国网江苏省电力有限公司检修分公司;国网江苏省电力有限公司电力科学研究院; |
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| 基金项目： | 国家科学青年基金资助项目(51707090) |
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| 摘 要： | 在苏州南部地区接入统一潮流控制器(unified power flow controller,UPFC)可以提升电网供电能力,但是UPFC的接入会对输电线路保护的可靠性、选择性和灵敏性产生影响。文中基于500 kV苏南UPFC工程,结合线路故障后UPFC系统的控制保护逻辑,通过建立含UPFC的电力系统故障等值模型,分析了UPFC接入对线路两侧距离保护动作特性的影响并提出应对性策略。
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| 关 键 词： | 苏南UPFC 距离保护 故障等值模型 应对策略 |
| 收稿时间： | 2017/11/9 0:00:00 |
| 修稿时间： | 2017/12/14 0:00:00 |
Research on the Effect of 500 kV UPFC in Southern Suzhou on Distance Protection and the Countermeasures |
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| Authors: | QU Feng DENG Kai ZHANG Yun QIAN Wei ZHOU Qiang KONG Xiangping |
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| Affiliation: | State Grid Jiangsu Electric Power Co., Ltd. Maintenance Branch, Nanjing 210002, China; State Grid Jiangsu Electric Power Co., Ltd. Research Institute, Nanjing 211103, China |
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| Abstract: | It is conductive to improve the power supply capacity of power grid in the southern part of Suzhou based on unified power flow Controller (UPFC).However,the integration of UPFC has an impact on the reliability,selectivity and sensitivity of transmission line protection.In this paper,the fault equivalent model of 500 kV UPFC in Southern Suzhou is built combined with the control and protection logic after line fault,then the influence on distance protection action is analyzed,as well as the coping strategies are proposed. |
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| Keywords: | UPFC in Southern Suzhou distance protection fault equivalent model coping strategies |
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