Safety and stability control system online strategy constant value checking method

Abstract

The invention provides a safety and stability control system online strategy constant value checking method; an off-line strategy is formulated under the consideration of the operation mode by an operator, however, when the actual power grid encounters certain extreme operation modes, failure of the off-line voltage stabilization strategy is caused; the off-line strategy is made based on certain specific faults, and if some multiple successive faults occur in the power grid, a strategy table is caused to be mismatched, and the power grid suffers from a instability risk; the off-line strategy is not an optimal value for some operation modes, and over-cutting and poor economic performance in actual operation are caused; and the off-line strategy making work is complex, so that an operator which is rich in experience is needed in analysis, gathering and classification processes, and the operator faces great challenges. According to the method, the online strategy constant value is checkedfor many times from different aspects, so that the reliability of using the online strategy constant value of the stable control system is improved, and a technical guarantee is provided for safe andstable operation of the power grid.

Description

technical field [0001] The invention belongs to the field of electric power system automation, and more specifically relates to an online strategy fixed value checking method for a safety and stability control system. Background technique [0002] The safety and stability control system is the second line of defense to ensure the safe and stable operation of the power grid. In a certain operation mode, control strategies are formulated for some expected faults. Therefore, an effective and reliable safety and stability control strategy is the core of the safety and stability control system, and it is also Guarantee of stable operation. [0003] The safety and stability control strategy includes four types of information: operation mode, failure mode, power flow mode and control measures, and forms a logical and easy-to-understand strategy table in a specific format, which is convenient for program developers to program. At present, the control strategies widely used at home ...

AI Technical Summary

Problems solved by technology

[0005] (1) The off-line strategy is formulated by the operator in consideration of the operation mode, but when there are some extreme operation modes in the actual power grid, the off-line stability control strategy will fail;

[0006] (2) The offline strategy is formulated based on certain specific faults. If there are some multiple sequential faults in the power grid, it will lead to a mismatch in the strategy table, and there is a risk of instability in the power grid;

[0007] (3) The off-line strategy is not the best setting value for some operation modes, which will lead to overcut and poor economic performance in actual operation;

[0008] (4) Offline strategy formulation is complicated, and requires experienced workers in the process of analysis, aggregation, and classification, which makes it face huge challenges

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