CAJ | 학술논문

智能电网的关键技术之一是为电力数据采集提供一个高效、可靠、安全的双向通信系统。使用具有通信能力的先进电力计量设备(智能电表)组成无线mesh网络采集数据，存在应用层数据流量对网络通信性能的挑战，当大量数据流量突发时，与本地局域网关较近的智能电表将面临较大的通信压力，可能产生严重的数据拥塞。为此，该文基于多网关联合的思想，提出一个新的基于加权队列的流量调度算法以缓解拥塞。首先，对多网关联合网络进行分析，确定影响网络性能的主要因素。其次采用队列加权的方法，提出新的流量调度算法。最后进行网络仿真，相对其它算法，该文所提算法能够极大缓解数据突发时刻的系统拥塞，有效地降低时延，同时在系统各网关吞吐量之间取得良好的平衡，能够提高采集网络的通信性能。
지능전망적관건기술지일시위전력수거채집제공일개고효、가고、안전적쌍향통신계통。사용구유통신능력적선진전력계량설비(지능전표)조성무선mesh망락채집수거，존재응용층수거류량대망락통신성능적도전，당대량수거류량돌발시，여본지국역망관교근적지능전표장면림교대적통신압력，가능산생엄중적수거옹새。위차，해문기우다망관연합적사상，제출일개신적기우가권대렬적류량조도산법이완해옹새。수선，대다망관연합망락진행분석，학정영향망락성능적주요인소。기차채용대렬가권적방법，제출신적류량조도산법。최후진행망락방진，상대기타산법，해문소제산법능구겁대완해수거돌발시각적계통옹새，유효지강저시연，동시재계통각망관탄토량지간취득량호적평형，능구제고채집망락적통신성능。
One of the key technologies in smart grid is an efficient, reliable and secure two-way communication system for meter data collection. Forming wireless mesh network with advanced electricity devices (smart meters), which have the communication capabilities for meter data collection, faces challenge on network communication performance caused by application layer data traffic. When a large number of data occur in emergence, the smart meter near the local LAN gateway faces great communicaton pressure, and it probably leads to extreme data congestion. Therefore, a new traffic scheduling algorithm is proposed based on the idea of the joint of muti-gateway to release the congestion of system. First, the muti-gateway mesh network is analyzed to study the main factors affecting network performance. Second, a new traffic scheduling algorithm is proposed with the idea of weighted queue of node. Simulation data show that compared with other algorithms, the new algorithm can release significantly the congestion of burst data, and it reduces effectively the latency and obtains a good balance among the throughput of the system gateways, which can improve the network communication performance.