Abstract
The substation television system is a product of the combination of security protecting technology with the automation of electric power dispatch, the purpose of which is to enable a substation attended by a few people and capable of performing the functions of telemetry, telesignaling, telecontrol, and teleregulation to genuinely become an unattended one. In the construction of an unattended substation, what a power company is most worried about is whether the reliability of the primary and secondary equipment can satisfy the requirement for unattended operation. However, from the point of view of technological development, it is only natural for the first generation of the television system to come into being, which is capable of monitoring all aspects of the safe operation of an unattended substation while working in coordination with the existing energy management system (EMS). This article is concerned with the structure and function of a new generation of television system and two crucial techniques in its implementation, that is, the integrated transmission of multiple media information and the remote control over the unattended substation as well the prospects for the trend of the merger of the television system with the EMS.
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