Searching method for generator tripping value and generator tripping range

Abstract

The invention discloses a searching method for generator tripping value and generator tripping range which determines a cut generator rejection, according to a preset value CO of the generator tripping. After the cut generator rejection is cut, whether an electrical power system is stable or not is estimated. If the electrical power system is in an instability, the preset value CO of the generator tripping is increased to a searching step Delta CO. Whether the preset value CO of the generator tripping is less than a maximum output and C max or not is estimated. If the preset value CO of the generator tripping is less than the maximum and C max, a cut generator rejection is redetermined and a stability of system is estimated according to the changed preset value CO of the generator tripping. Until the electrical power system is in a stability, the preset value CO of the generator tripping is a pending generator tripping value C. When the preset value CO of the generator tripping is assigned to the generator tripping value C, a search for the generator tripping value C is finished. Base on an obtainment of the generator tripping value C, a dichotomy is used to search a range of the generator tripping. The invention relates to the searching method for generator tripping value and generator tripping range which can search the generator tripping value and the generator tripping range quickly, therefore a safe and stable strategy can be made quickly and simply.

Description

technical field [0001] The invention relates to the technical field of electric power system analysis, in particular to a search method for a cut-off amount and a cut-off range. Background technique [0002] The power system is a complex large system, and the operation of the power grid needs to maintain the safety and stability of the power grid. According to the "Guidelines for the Safety and Stability of Power Systems", the power system follows the N-1 principle, that is, any component in the power system (such as lines, units, transformers, etc.) has no fault or is disconnected due to a fault, and the power system should be able to maintain stable operation and normal power supply. [0003] Therefore, if an N-1 fault occurs in the power system, that is, a certain component in the power system is disconnected, the power system does not need to take any measures, and the system can remain stable. However, if an N-2 fault occurs in the power system, that is, two component...

AI Technical Summary

Problems solved by technology

[0006] In the embodiment of the present invention, a search method for cutting machine amount and cutting machine range is provided to solve the time-consuming and labor-consuming problems of manpower calculating the cutting machine amount in the prior art

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