| 引用本文: | 韩冰,汤汉松,刘斌,周东顶,郑发林.基于电压锁相网络化采样的母线保护研究[J].电力系统保护与控制,2015,43(11):109-114.[点击复制] |
| HAN Bing,TANG Hansong,LIU Bin,ZHOU Dongding,ZHENG Falin.Networking sampling busbar protection based on voltage phase lock[J].Power System Protection and Control,2015,43(11):109-114[点击复制] |
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| 摘要: |
| 设计一种既具备结构简单、资源共享、扩展性好等优点，又不依赖于外部全局同步系统的采样值组网传输的母线保护，在数字化变电站的建设中具有十分重要的意义。介绍了数字化变电站母线保护的采样值传输系统，描述了基于绝对延时的点对点母线保护技术，提出了一种基于电压锁相的网络化母线保护方案。利用母线电压天然的同步性能特征，通过数字锁相环及采样重插值技术，消除网络化采样对同步信号的依赖性。测试表明，基于电压锁相的网络化母线保护采样同步性好，动作快速可靠，是数字化变电站母线保护的一种新思路。 |
| 关键词: 数字化变电站 绝对延时时间 数字式锁相环 网络化采样 母线保护 |
| DOI：10.7667/j.issn.1674-3415.2015.11.017 |
| 投稿时间：2014-09-03修订日期：2015-03-24 |
| 基金项目: |
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| Networking sampling busbar protection based on voltage phase lock |
| HAN Bing,TANG Hansong,LIU Bin,ZHOU Dongding,ZHENG Falin |
| (Guangxi Electric Power Dispatching Control Center, Nanning 530022, China;Jiangsu Lingchuang
Electric Automation Co., Ltd., Zhenjiang 212009, China) |
| Abstract: |
| A sampling value network transmission bus protection independent of outside global synchronization system is designed. The protection has the advantages of simple structure, resource sharing and good expansibility, so it has very important significance in the construction of digital substation. This paper introduces the sampling transmission system of bus protection in digital substation, describes a point-to-point bus protection technology based on absolute delay, and proposes a network bus protection using voltage phase lock. The synchronization performance of bus voltage, digital phase locked loop and resampling interpolation are used to eliminate the synchronization dependence in network sampling system. Experiments show that the bus protection based on voltage phase lock is well synchronous, fast and reliable. This method is a new solution for the bus protection of digital substation. |
| Key words: digital substation absolute delay time DPLL network sampling busbar protection |
