| Electric power has become one of the main power resources of social development at present. As the foundation of national economy development, electric power is the secondary energy which is not to be largely reserved. Electric power’s transmission,distribution and using is finished almost at the same time,so they must balance and coordinate each other. The process of power transformation and distribution needs the power transformer to fulfill,meanwhile,it also needs the computer technology and the modern communication technology to control and coordiante the substation’s automatic monitoring and measurement.Therefore,the substation plays the irreplaceable role in the power supply system.This article surveys the new status of research, and on this basis, takes the Shuangfengsi110kV substation secondary system designing as an example to elaborate.The context of the study contains the Shuangfengsi110kV substation system designing of connecting to the grid system which includes substation designing and planning, scheme of accessing to the system, electrical calculation, etc; the Shuangfengsi110kV substation secondary system designing which includes secondary designing principles, system relay protection, automation of electric network management, etc;the Shuangfengsi110kV substation secondary system path of choice analysis which includes the secondary line path, lead line designing, etc. At last, summarizes the all research above.This study can achieve the information sharing among the various devices so as to avoid repetitive construction and investment, depress the cost of the substation life cycle,so it is of great economic research value. Through the research and the practice of substation secondary system,not only have we developed the software of substation equipments,but summed up the experience of substation building, management, maintenance and running.so it has laid the foundation of fulfilling the goal of the next generation substation. |
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