CAJ | 학술논문

变电站通信网络是变电站实现综合自动化的前提，变电站内部设备可划分成3个层次，其中第二层的数据和控制信息传送到与远方调度中心通信的站级PC机，该过程属于计算机通信网络的范畴，针对变电站通信网络的这个特点，将两级优先级控制轮询系统用在变电站通信网络中。提出了在站级 PC 通信接口（主节点）采用完全服务的轮询方式，第二层设备通信接口内部的数据缓冲区（子节点）采用门限服务的轮询方式的新模型。完全服务的优先级比门限服务的高，对新模型进行了仿真和理论计算，得出新系统的平均时延和平均排队队长与负载之间的关系、平均时延和平均排队队长与子节点数之间的关系，这些参数对于提高变电站通信网络的性能至关重要。
변전참통신망락시변전참실현종합자동화적전제，변전참내부설비가화분성3개층차，기중제이층적수거화공제신식전송도여원방조도중심통신적참급PC궤，해과정속우계산궤통신망락적범주，침대변전참통신망락적저개특점，장량급우선급공제륜순계통용재변전참통신망락중。제출료재참급 PC 통신접구（주절점）채용완전복무적륜순방식，제이층설비통신접구내부적수거완충구（자절점）채용문한복무적륜순방식적신모형。완전복무적우선급비문한복무적고，대신모형진행료방진화이론계산，득출신계통적평균시연화평균배대대장여부재지간적관계、평균시연화평균배대대장여자절점수지간적관계，저사삼수대우제고변전참통신망락적성능지관중요。
The network is very important to substation automation system. Typically the internal equipment of substation can be divided into three levels.Data and control information at the second level are transmitted to the station?level PC of remote control center. This process belongs to the category of computer communication networks. Aiming at the characteristic of substation communication network,this paper uses the gated and exhaustive services mixed polling system in substation.The station level PC communication inter?face has higher priority than those on communication interface internal data buffer in the second level.The exhaustive service strategy is used for the station level PC communication interface and gated service for communication interface internal data buffer in the second level.Based on experiments and theoretical calculations,this paper obtains the relationship that the mean time delay and mean queue length increase as the load increases. In addition, it also achieves the relationship that the mean time delay and mean queue length increase as the number of communication interface internal data buffer in the second layer increases. These results are crucial to the improvement of network performance in substation.