Station control technology
The term station control technology encompasses devices and equipment that enable communication between digital protection devices and the local station control technology in power distribution and supply systems. This station control level often overlaps with the field control level .
The aim of this technology is to operate and log the local system and to archive events such as operating messages , measured values and fault records . The station control technology often also provides the link to telecontrol technology and is therefore often designed to be multi-protocol compatible on the telecontrol side. The main difference between station control technology and telecontrol technology can be seen in the number of clients connected. In a station, more than 100 digital protective devices with various protective mechanisms can be connected over several voltage levels, which update an image in the station control system , while the communication to the higher-level network control level relates to a few operational management-relevant data.
Important features for the station control system are in connection with the requirements for the digital protection devices and the like. a.
- Redundancy capability
- Status management (valid, invalid, blocked, updated etc.) for all information
- Timekeeping and accuracy
- higher-level interlocks
Less significant and therefore a distinguishing feature from process automation technology such as B. Alan Bradley and Simatic S7, on the other hand, is processing speed, maintainability, visualization. A typical example of this technology is the Sinaut LSA from Siemens AG, which has been developed in nine versions since 1988 from a pure station control system to "on-site operation" (LSA678) to a multifunctional node In the expansion stage, fully graphic operator stations (LSAVIEW) and several network control centers could be connected.