CAJ | 학술논문

为了评估智能变电站过程总线网络性能，从交换式以太网的工作原理出发，研究了过程总线通信模型。根据IEC 61850描述的发布/订阅通信机制，引入了网络系统的最小空间概念。建立了由采样值(sampled value，SV)和通用面向对象的变电站事件(generic object oriented substation event， GOOSE)构建的网络交换空间模型。给出了交换空间的多播映射方法，以获得网络最优(流量)传输模型。根据优先级调度队列的阻塞特性，推导了 SV、GOOSE 共网传输时延上界的理论计算公式。提出了一种简单、高效且不依赖同步时钟源的过程总线网络时延评估算法，解决了工业现场网络性能的实时监视和诊断问题。以一典型变电站过程总线实验为例，验证了评估模型和算法的正确性。该项研究对智能变电站过程总线优化设计具有参考意义。
위료평고지능변전참과정총선망락성능，종교환식이태망적공작원리출발，연구료과정총선통신모형。근거IEC 61850묘술적발포/정열통신궤제，인입료망락계통적최소공간개념。건립료유채양치(sampled value，SV)화통용면향대상적변전참사건(generic object oriented substation event， GOOSE)구건적망락교환공간모형。급출료교환공간적다파영사방법，이획득망락최우(류량)전수모형。근거우선급조도대렬적조새특성，추도료 SV、GOOSE 공망전수시연상계적이론계산공식。제출료일충간단、고효차불의뢰동보시종원적과정총선망락시연평고산법，해결료공업현장망락성능적실시감시화진단문제。이일전형변전참과정총선실험위례，험증료평고모형화산법적정학성。해항연구대지능변전참과정총선우화설계구유삼고의의。
To assess the overall network performance of process bus in smart substation, the mathematic model of process bus communication was analyzed from the working principle of switched Ethernet. According to the publish/subscribe communication mechanism specified in IEC 61850, the minimal space concept of network system was presented. The switch space shared by sampled value (SV) and generic object oriented substation event (GOOSE) was modeled. The multicast mapping method of the switch space was introduced to obtain the optimal network (traffic) transmission model. The upper delay calculation formula for the shared-network of SV and GOOSE was deduced based on the blocking characteristics of priority scheduling queue. A simple and efficient evaluation method of process bus network latency which can work without the help of synchronous clock source was proposed to implement the real-time monitoring and diagnosis of network performance in industrial field. A typical process bus experiment validated the availability of proposed models and methods. The researching result is valuable for the process bus optimization design of smart substation.