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将整个煤矿配电网信息统一上传到地面集中式智能变电站的区域控制中心,会使通信网络难以满足高可靠性和低延时的要求,并且对集中保护测控装置的数据存储能力、数据库的管理能力及运算能力都是挑战;因此探讨了基于IEC 61850的井下智能变电站分布式母线保护方案。由于分布式母线保护对各子单元采样值同步的要求远高于传统变电站,设计了井下智能变电站“两层一网”的网络架构并分析了基于此架构的IEEE 1588同步对时方案,并对分布式母线保护所涉及的采样值及GOOSE信息传输逻辑进行了分析研究,以此实现网络保护功能,简化了保护的复杂性。
The entire coal distribution network information unified upload to the ground centralized intelligent substation regional control center, will make the communication network is difficult to meet the requirements of high reliability and low latency, and centralized protection and monitoring devices data storage capabilities, database management Capacity and computing power are all challenges. Therefore, the distributed busbar protection scheme based on IEC 61850 for underground smart substation is discussed. As the requirements of distributed busbar protection for synchronizing sample values of sub-units are much higher than those of traditional substations, a network structure of underground intelligent substation “two layers and one network” is designed and the IEEE 1588 synchronization timing scheme based on this structure is analyzed. And the distributed bus protection involves the sampling value and GOOSE information transmission logic analysis, in order to achieve network protection, simplifying the complexity of protection.