VMETHOD OF RELIABLE INCREASING POWER SUPPLY SYSTEMS WITH MOTOR LOADING

Abstract

There has been offered the method of improving the reliability of power supply of the motor load in the existing schemes by reducing the break power in ATS modes. This has been achieved by the use of a special fast-acting ATS device in which at short circuit in the power supply network there has been given a signal to switch-off the main breaker of the main power supply source and at appearance a current in circuit of solenoid a breaker of reserve power supply source has been switched-on. In case of refusal to disconnect the short-circuit by the main breaker a signal to switch-off of reserve power supply breaker is given. The advantages of this method are illustrated in the example of two-transformer substation, for which it is possible to use the fast-acting ATS without replacement serial section breaker to an expensive high-speed.