Abstract
With the development and application of high teehnology have brought new requirements for power quality and reliability power supply,the controlling and protection systems of HV and EHV substations have to meet these requirements.Improving power system network enhancing capability and reliability of power supply and level of intergrate automation must be meet demanda of society.This is the first goal of Power system.
Substation integrate automation system(SIAS) development based on computer and network communication teehniques and which has be develop rapidly recently, the production update and change generation is proeessed in more and more speed.A series of automation teehnology reformation has been brought in substation designs，installation，debugging，operation， mainienance and management with SIAS. At present, as a result of SIAS introduction no the detailed requirements and manufacturing standards,the type and system configure of SIAS production found inmarkets are quite different.Thus in the process of project design and application,it is of essential for choiee an ideal SIAS which according to substations in power system status, role and size of substation, voltage level and the status of a device, that to reasonable conguration.
The design of substation integrated automation system status, hardware structure, function and protection of the discussion of configuration, substation automation hardware structure analysis to determine the 110kV substation automation system design requirements. Short-circuit current through the detailed terms and products on the market in the full study, the first device on the secondary system and a reasonable selection and configuration, the completion of the substation automation system design.
Key Words：Substation automation； Protection system； Electric design； Electrical secondary system
