Narrowband PLC Channel Workbench to Emulate Transmission in Smart Grid

A real-time workbench able to reproduce the same behavior as an indoor network is in order. Such a tool will help researchers and industrials extend the smart grid technology indoors and have a better acknowledgment of Smart Grid systems interoperability. In order to develop such a tool many approaches should be studied to choose the most suitable one by comparing the models and the technologies. The considered hardware are the embedded systems and the selected approach is the statistical one. It appears that the FlR filter is the most pertinent approach.

发电市场技术支持系统中的有功安全校正策略

提出了符合中国发电市场运营规则的安全校正策略。考虑了机组出力变化速率约束、线路潮流速率约束和断面潮流速率约束 ,在灵敏度计算的基础上 ,以机组出力调整量最小和购电费用增量最小 2种目标对机组出力计划进行调整。依据该算法研制开发的应用软件已在浙江发电市场技术支持系统 (PMOS— 2 0 0 0 )中投入实时运行 ,实践证明 ,该算法切实可靠 ,收敛速度快 ,鲁棒性强 ,能够处理实时运行中的各种情况。

非开挖定向钻孔铺管技术的运用

当今社会的快速发展,造成城市既有配套设备不断更新,遍布于大街小巷的通信、电力线路首当其冲。新建铁路、公路、隧道等工程要求对影响施工的通信、电力线路进行迁改。多数情况下,受现场环境和征拆因素影响,通信、电力线路迁改路径复杂,迁改施工难度大、进展慢,直接影响城市建设和工程顺利进行。非开挖定向钻孔铺管技术的引入,可以有效地解决市区通信、电力线路迁改路径复杂的问题。通过非开挖定向钻孔铺管技术,将架空线改为地埋敷设,既不损坏地面设施,又可以大大降低迁改施工成本。该文对非开挖定向钻孔铺管技术在新建铁路通信、电力线路迁改施工中的作用及其施工工艺作简要阐述,以推广此项技术的应用。