由于各地区发展不均衡,在大多数地区配电网10 k V线路中智能配变并没有实现自动化监控,因此调控员无法直接查看配变无功状况。基于海讯数据库,利用VBA软件设计了1套10 k V线路及其智能无功状态在线监测平台,当配电网10 k V线路或智能配...由于各地区发展不均衡,在大多数地区配电网10 k V线路中智能配变并没有实现自动化监控,因此调控员无法直接查看配变无功状况。基于海讯数据库,利用VBA软件设计了1套10 k V线路及其智能无功状态在线监测平台,当配电网10 k V线路或智能配变发生无功倒送或者功率因数过低时,及时发出报警,提醒调控员查看相关线路及其智能配变的无功状态。经过一段时间运行,该平台能够为调控员对线路无功状况分析提供辅助判断功能,减少调控员的工作量,提高工作效率,具有很强的实用性。展开更多
Based on the relationship among the geographic events, spatial changes and the database operations, a new automatic (semi-automatic) incremental updating approach of spatio-temporal database (STDB) named as (event-bas...Based on the relationship among the geographic events, spatial changes and the database operations, a new automatic (semi-automatic) incremental updating approach of spatio-temporal database (STDB) named as (event-based) incremental updating (E-BIU) is proposed in this paper. At first, the relationship among the events, spatial changes and the database operations is analyzed, then a total architecture of E-BIU implementation is designed, which includes an event queue, three managers and two sets of rules, each component is presented in detail. The process of the E-BIU of master STDB is described successively. An example of building’s incremental updating is given to illustrate this approach at the end. The result shows that E-BIU is an efficient automatic updating approach for master STDB.展开更多
文摘由于各地区发展不均衡,在大多数地区配电网10 k V线路中智能配变并没有实现自动化监控,因此调控员无法直接查看配变无功状况。基于海讯数据库,利用VBA软件设计了1套10 k V线路及其智能无功状态在线监测平台,当配电网10 k V线路或智能配变发生无功倒送或者功率因数过低时,及时发出报警,提醒调控员查看相关线路及其智能配变的无功状态。经过一段时间运行,该平台能够为调控员对线路无功状况分析提供辅助判断功能,减少调控员的工作量,提高工作效率,具有很强的实用性。
文摘Based on the relationship among the geographic events, spatial changes and the database operations, a new automatic (semi-automatic) incremental updating approach of spatio-temporal database (STDB) named as (event-based) incremental updating (E-BIU) is proposed in this paper. At first, the relationship among the events, spatial changes and the database operations is analyzed, then a total architecture of E-BIU implementation is designed, which includes an event queue, three managers and two sets of rules, each component is presented in detail. The process of the E-BIU of master STDB is described successively. An example of building’s incremental updating is given to illustrate this approach at the end. The result shows that E-BIU is an efficient automatic updating approach for master STDB.
