| 引用本文: | 唐治国,汪思满,康 丰,周小波.多级级联分布式母线保护方案[J].电力自动化设备,2012,32(11): |
| TANG Zhiguo,WANG Siman,KANG Feng,ZHOU Xiaobo.Multilevel cascading solution for distributed busbar protection[J].Electric Power Automation Equipment,2012,32(11): |
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| 摘要: |
| 提出一种分布式母线保护方案。该方案采用主机与多个子机进行级联的结构，主机包含核心CPU模件、采样前置模件和GOOSE前置模件，子机根据采样和跳闸方式配置功能模块；分别采用软件插值、计数器同步机制实现点对点直采直跳和采样组网的数据同步；全部间隔均为传统采样时，采用采样组网方式的同步机制；部分间隔传统采样、部分间隔数字采样时，将传统间隔数字化完成插值同步。对采样数据进行插值同步、数据抽取、打包上送和报文解码，对GOOSE方式的开关量进行报文过滤，从而解决数据流量大的问题；采用双A／D逻辑，保证区外故障时保护不动，区内故障时保护可靠动作。 |
| 关键词: 智能变电站 级联 母线 继电保护 同步 |
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| Multilevel cascading solution for distributed busbar protection |
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TANG Zhiguo, WANG Siman, KANG Feng, ZHOU Xiaobo
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Guodian Nanjing Automation Co.，Ltd.，Nanjing 211100，China
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| Abstract: |
| A solution of distributed busbar protection is proposed，which applies the multilevel structure of a master unit and multiple slave units. The master unit consists of CPU module，sampling front-end module and GOOSE front-end module and the function modules of slave unit is configured according to the sampling and trip modes. The soft interpolation and counter synchronization are applied to respectively realize the peer-to-peer direct sampling and direct tripping and the data synchronization of sampling network. For data synchronization，when there are only traditional bays，the sampling network is applied； when there are both traditional and digital bays，the traditional bays are digitalized by interpolation synchronization. To reduce the data flow，the sampling data are processed by interpolation synchronization，data extraction，packing-sending and message and packet decoding while the DI GOOSE packet is filtered. Dual A/D logic is applied to ensure proper protective actions. |
| Key words: smart substation cascades busbars relay protection synchronization |
