ABSTRACT
The design analysis the principle of power generation, electrical energy production, electrical system very train become the some kind of form, and switch station main connection form of the from rationality, reliability, economy wait aspect,research mesotype heat power plant electric main connection. On the basis of figure wait up from circuitry, resistance equivalent transformation theory and short-circuit current, figure know clearly main bus-bar, station service generatrix, dynamo exit end, step down side and high-tension side end ,short-circuit current,utilize the result ascertain the turbogenerator, main transformer, station transformer, breaker, close , generatrix, arrester type. Warranty the capacity compensatory desigin formula,ascertain circuital compensate capacity,even select shunt capacitor group by way of reactive-load compensation equipment. Design the 110kv switch station's electric connection, and utilize raw data select know clearly primary cut-out, high voltage isolator wait electric installation. Analysis the current transformer and voltage transformer' work theory, working conditions and action,combine utilize these electric element severalty protective scope,design the protective relaying system of the power plant power pack. Set choice the power plant correlative earthing installation, lightning conductor and power automatism thrown cut device.
keyword:turbo generator; power transformer; high pressure breaker; main connections; heating effect