All-working-condition automatic RB control method

Abstract

The invention provides an all-working-condition automatic RB control method, which relates to the field of thermal power generation. The prior art lacks an RB control method comprising the process control of different working conditions and linkage functions of different device control modes, is easy to generate the phenomenon that the operating conditions of machine groups and the device control boundary conditions are indefinite so that the control process has great risk and is easy to cause tripping operations of the machine groups. The all-working-condition automatic RB control method comprises the processes of triggering delay time selection, RB rate selection, target load selection, jump-grinding mode selection, device linkage mode selection, machine group control mode selection, RB resetting and the like, and by aiming at the process control of the different working conditions and the linkage functions of the different device control modes, the method can effectively improve the working condition adaptability and the success ratio of the RB function, and prevent the damages caused by the tripping operations of the machine groups as far as possible.

Description

【Technical field】 [0001] The invention relates to the field of thermal power generation, in particular to an RB (rapid load reduction) control method for a thermal power unit. 【Background technique】 [0002] When a thermal power unit trips due to a failure of an important auxiliary machine, it will lose half of its load carrying capacity in an instant. This is a severe challenge to the quick response and stable operation of the unit control. The RB control system is adopted for this situation. The automatic decision-making and control system under fast transient conditions has high requirements for its adaptability to working conditions and the perfection of automatic functions, but currently there is a lack of linkage functions including process control under different working conditions and different equipment control methods. The RB control method is likely to lead to unclear operating conditions of the unit and equipment control boundary conditions, causing great risks i...

AI Technical Summary

Problems solved by technology

[0002] When a thermal power unit trips due to a failure of an important auxiliary machine, it will lose half of its load carrying capacity in an instant. This is a severe challenge to the quick response and stable operation of the unit control. The RB control system is adopted for this situation. The automatic decision-making and control system under fast transient conditions has high requirements for its adaptability to working conditions and the perfection of automatic functions, but currently there is a lack of linkage functions including process control under different working conditions and different equipment control methods. The RB control method is likely to lead to unclear operating conditions of the unit and equipment control boundary conditions, causing great risks in the control process and easily causing the unit to trip

With the continuous increase of the single unit capacity of thermal power units, the impact of unit fault tripping on the power grid and the life loss of the unit itself will have a serious impact.

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