INTERACTION OF PROTECTION WITH SUBSTATION CONTROL SYSTEM TO EN HAN CE OVERALL FUNCTIONS
محل انتشار: ششمین کنفرانس بین المللی برق
سال انتشار: 1370
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 1,562
فایل این مقاله در 11 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
PSC06_039
تاریخ نمایه سازی: 12 شهریور 1386
چکیده مقاله:
Events in the past show that some protection problems are hard to solve with the information only available on the relay location. One of these cases are the unit protection which alone cannot protect a machine against damage (e.g. in the shaft) when certain faults occur in the HV etwork near the station. The action of line protection influences the machine protection, the appropriate tripping is also dependent on other machines and lines and also on the actual network situation. Not only local data but global data are needed. Dedicated protection and programmable logics were proposed and implemented for this task. Such equipment very soon becomes quite complicated, losing the required flexibility and the necessary reliability. Normally, numerical relays have a serial interface. Microprocessor based substation control provides both global data and communication links. Therefore, the framework of a substation control system coordinating the control and the protection provides all facilities to solve the problem of machine protection generally. Basic considerations, the concept and examples are presented.