Secondary loop load calculation method in nuclear energy industry steam supply mode

By obtaining and weighting the steam turbine load in the nuclear energy industrial steam supply mode, the problem of load value deviation in the prior art is solved, and a more accurate second-loop load calculation is achieved, and the power control accuracy of the nuclear steam supply system is improved.

CN119720502APending Publication Date: 2025-03-28SANMEN NUCLEAR POWER CO LTD
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Patent Information

Application Number
CN202411690685.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-25
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

In the nuclear energy industrial steam supply mode, when the existing control system is in industrial steam supply, there is a deviation between the turbine load value and the actual load value, which affects the power control of the nuclear steam supply system.

Method used

By obtaining the corresponding relationship curve between the first stage pressure of the turbine and the steam pump load and the steam pump load curve at the maximum steam pumping volume, the weighting coefficients α and (1-α) are calculated, and the turbine load is weighted and summed with these coefficients. Then, the steam pump load is corrected to obtain the second loop load.

Benefits of technology

The deviation between the turbine load value and the actual load value in the original control system is eliminated, and a more accurate second-loop load is obtained, thereby facilitating the power control of the nuclear steam supply system.

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Abstract

The invention relates to the technical field of nuclear energy comprehensive utilization, in particular to a secondary circuit load calculation method in a nuclear energy industry steam supply mode. The method comprises the following steps: step 1, obtaining a corresponding relation curve of the first-stage pressure of the steam turbine and the load of the steam turbine; 2, a steam extraction load curve under the maximum steam extraction amount is obtained; 3, obtaining a weighting coefficient alpha of a corresponding relation curve of the first-stage pressure of the steam turbine and the load of the steam turbine and a weighting coefficient (1-alpha) of a steam extraction load curve according to the actual steam extraction flow Q; 4, according to the actual first-stage pressure p of the steam turbine, the corresponding load on the corresponding relation curve of the first-stage pressure and the steam turbine load and the corresponding load on the steam extraction load curve are obtained, and the load of the steam turbine is obtained through weighted summation; and 5, the steam extraction load is used for correcting the steam turbine load, and the secondary circuit load is obtained. According to the method, the deviation between the load value of the steam turbine in the original control system and the actual load value of the steam turbine is eliminated, and more accurate secondary loop conformance is obtained, so that the power control of the nuclear steam supply system is facilitated.
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