| 摘要 |
PURPOSE:To reduce the burden on an operator and to make it possible to perform an effective operation by performing operations for the difference between the forecasted variation in the previously set loading and the actual loading in every certain period and making/breaking a plurality of transformer banks to be correspondent by a circuit breaker. CONSTITUTION:The power is supplied to the primary circuit breakers 3-5 from AC power supply 1 through a main circuit breaker 2 and a main bus conductor B0. The power is supplied to the secondary bus conductors B1-B3 from the primary circuit breakers 3-5 through the transformers TR1-TR3 having the capacities of x-z KVA and through the secondary circuit breakers S1-S3. Furthermore, the power is supplied to each loading through the distribution circuit breakers F1-F6. The interlinked circuit breakers B12 and B23 are provided to the secondary bus conductor. At a system automatic switching device 6, one-day's loading variation is previously filed in the loading variation memory section 7, the forecasted value is sent to the operation section 8 at a certain period, the operation of the balance of transformer capacity and loading is performed, a circuit breaker to perform a making/breaking operation is selected, and an on/off control signal is transmitted to each circuit breaker from the output section 9. Accordingly, the burden on an operator is reduced and the system is operated effectively. |
