| 引用本文: | 陈永昕,尹项根,张哲,杨凡,曹文斌,习伟.基于邻域信息的3/2接线按串配置断路器保护方案及实现方法[J].电力自动化设备,2019,39(12): |
| CHEN Yongxin,YIN Xianggen,ZHANG Zhe,YANG Fan,CAO Wenbin,XI Wei.String-based circuit breaker protection construction scheme based on neighborhood information under existing 3/2 connection mode and its implementation method[J].Electric Power Automation Equipment,2019,39(12): |
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| 摘要: |
| 根据超高压系统3/2接线变电站结构特点，提出基于邻域信息的按串配置断路器保护方案及其实现方法，提升近后备保护的选择性、速动性和可靠性。按串配置断路器保护方案包括3种优化策略：消除死区的断路器分合优化策略、中断路器重合闸的自适应策略、基于运行方式的在线辨识控制策略。进而从站域保护和就地化保护2个角度提出实现方法，并通过仿真分析验证了可行性和有效性。所提方案利用信息共享技术克服传统断路器保护的缺陷，为提升交直流混联电网安全稳定运行提供新的思路。 |
| 关键词: 3/2接线 断路器保护 邻域信息 站域保护 就地化保护 |
| DOI：10.16081/j.epae.201912012 |
| 分类号:TM77 |
| 基金项目:国家自然科学基金面上项目(50877031)；南方电网公司科技项目(ZBKJXM20190044) |
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| String-based circuit breaker protection construction scheme based on neighborhood information under existing 3/2 connection mode and its implementation method |
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CHEN Yongxin1, YIN Xianggen1, ZHANG Zhe1, YANG Fan2, CAO Wenbin1, XI Wei3
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1.State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China;2.China Southern Power Grid Dispatching and Control Center, Guangzhou 510000, China;3.CSG Electric Power Research Institute, Guangzhou 510080, China
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| Abstract: |
| According to the structural characteristics of 3/2 connection substation in UHV(Ultra High Voltage) system, the string-based circuit breaker protection construction scheme based on neighborhood information and its implementation scheme are proposed, which enhance the selectivity, rapidity and reliability of short-range backup protection. The proposed scheme contains three optimized protection strategies, i. e. dead zone fault isolation optimized strategy, adaptive reclosing strategy of middle breaker and control strategy based on the running modes. Then the implementation method is put forward from two aspects of substation area protection and local protection, and the feasibility and validity are verified by simulation analysis. Information sharing technology is utilized in the proposed scheme to overcome the shortcomings of traditional circuit breaker protection, which provides a new idea for guaranteeing the safety of AC/DC hybrid power grid. |
| Key words: 3/2 connection mode circuit breaker protection neighborhood information substation area protection local protection |
