Abstract
Steam turbine is one of the most important equipment in thermal power plant. The development of information and communication technology improves the control level of steam turbine, meanwhile, brings cyber security problems. The core component of the steam turbine control system is the Digital Electro-hydraulic Control System (DEH). When it is attacked, it will affect the operation of the thermal power unit, and may affect the safety of the power system in serious cases. For this reason, this paper summarizes the cyber security of DEH system of steam turbine. Firstly, the network architecture of the steam turbine digital electro-hydraulic control system and the functions of each component are analyzed; secondly, based on the cyber security structure of the industrial control system, the cyber security threats that the steam turbine may face are expounded in terms of network communication, systems and software, and network attack methods, respectively; finally, the security protection means of the cyber security of the steam turbine are summarized.
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