摘要
目前IEC104协议仍在电力系统中广泛应用,远动主站和子站之间能否正确及时的通信关系到电力系统的安危。利用错误重传机制检测网络状态是实现应用IEC104稳定传输数据的一个基本方法,超时处理按照规约定义进行超时断开处理,但IEC104协议未对这种故障做出进一步处理。如果出现了故障主控站人员要经历很长时间才能找到故障原因。为保障远动主站和子站之间能正确及时的通信,设计开发一种能监听IEC104协议通信过程的系统。通过对模拟远动主站和子站的通信报文的抓包分析实现对IEC104协议通信过程的监听。统计出报文库错误报文率、IEC104错误帧率及重复报文率来客观评价远动主站和子站的通信,为控制站人员快速找出故障原因提供依据,保障电力系统的安全运行。
The IEC104 protocol is still widely used in the power system, the communication between main station and sub station is related to the safety of power system. The error retransmission mechanism is used to detect the network state, which is a basic method to realize the stable data transmission of IEC104, timeout is handled in accordance with the protocol definition, but the IEC104 protocol does not make further processing of this fault. So, if there is a fault, station staff will experience a long time to find the cause of the trouble. In order to guarantee the communication between the main station and sub station correctly and timely, a system that can monitor the communication process of IEC104 protocol is designed and developed. It implements the monitoring of IEC104 protocol communication process though capture analysis of the communication of simulated remote control station and sub station. Report library error message rate, IEC104 error rate, and repeat message rate are used to objectively evaluate communication of remote control station and sub station, to provide the basis for the control station personnel to quickly find out the fault causes, and to ensure the safe operation of the power system.
出处
《价值工程》
2017年第2期85-87,共3页
Value Engineering
