CAJ | 학술논문

详细介绍了在110kV曾家冲智能变电站二次网络调试期间发生的一起网络阻塞故障及其处理情况，介绍了故障现场排查方法，分析了引发网络故障的诱因。外网设备的不当接入与内网设备网络机制配置对安全防范考虑不足是导致此次网络阻塞的主要原因。此次故障是由外网有害设备向站内网络发送广播攻击报文诱发，而内网智能组件网络响应机制失当又进一步加剧了网络阻塞的程度，在两者共同作用下最终导致了全站网络阻塞。最后就智能变电站二次网络安全防护提出了启用网络抑制功能、改进智能组件网络收发机制、规范运行网络接入等措施和建议。
상세개소료재110kV증가충지능변전참이차망락조시기간발생적일기망락조새고장급기처리정황，개소료고장현장배사방법，분석료인발망락고장적유인。외망설비적불당접입여내망설비망락궤제배치대안전방범고필불족시도치차차망락조새적주요원인。차차고장시유외망유해설비향참내망락발송엄파공격보문유발，이내망지능조건망락향응궤제실당우진일보가극료망락조새적정도，재량자공동작용하최종도치료전참망락조새。최후취지능변전참이차망락안전방호제출료계용망락억제공능、개진지능조건망락수발궤제、규범운행망락접입등조시화건의。
A communication network congestion fault occurred during the commissioning of secondary network for 110kV Zengjiachong smart substation and the measures to cope with it are described in detail, and the on-site troubleshooting of the fault is presented and the predisposition led to the communication network fault is analyzed. Inappropriate connection with devices of outer network and insufficient consideration of security prevention for device configuration of inner network were main causes leading to the network congestion. At the beginning, this fault was induced by the broadcast message sent by unauthenticated device in outer network and inappropriate network response mechanism of smart component in inner network aggravated the extent of network congestion, thus under the combined action of the both, finally the network congestion of whole substation occurred. With regard to security protection of secondary network for smart substation, following suggestions such as starting the use of PRL and STP functions, improving the receiving and sending mechanism of smart component network, standardizing the connection with the network being operated, are put forward.