| 摘要 |
PURPOSE:To enable to raise the average efficiency of the entire system to the maximum, by operating a plurality of prime movers at a higher efficiency by changing the load distribution ratio of the prime movers in a power plant or the like utilizing steam turbines or the like. CONSTITUTION:A total load determining signal A for determining the load of the entire system consisting, for instance, two steam turbines is divided by a distributor 4 into load determining signals 5, 6 having a level of 50% respectively. On the basis of the above signals 5, 6, an arithmetic means 10 calculates the value of the turbine cycle efficiency from the relationship between a pre- stored turbine cycle efficiency and the load determining signals. Further, the means 10 produces bias signals 11, 12 on the basis of the signals 5, 6 and a tolerable unbalance signal B for determining the level of tolerable unbalance between the loads of two turbines. Then, actual-load determining signals C1, C2 are obtained by adding the bias signals 11, 12 to the load determining signals 5, 6 at adders 13, 14 and they are afforded to the two turbines. With such an arrangement, it is enabled to raise the cycle efficiency of the entire system to the maximum. |
