Searching method for generator tripping value and generator tripping range

A search method and cutting machine quantity technology, which is applied in the field of cutting machine quantity and cutting machine range search, can solve the problems of labor consumption and time-consuming calculation of cutting machine quantity by manpower, and achieve the effects of improving efficiency, reducing manpower input, and saving time

Active Publication Date: 2017-02-22
YUNNAN POWER GRID
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] In the embodiment of the present invention, a search method for cutting machine amount and cutting machine range is provi

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  • Searching method for generator tripping value and generator tripping range
  • Searching method for generator tripping value and generator tripping range
  • Searching method for generator tripping value and generator tripping range

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[0041] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0042] figure 1 This is a flow chart of a method for searching machine cut amount provided by an embodiment of the present invention, such as figure 1 As shown, the machine cut-off amount search method provided in this example is suitable for the formulation process of the security and stability strategy of the power ...

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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...

Claims

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Application Information

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IPC IPC(8): H02J3/14
Inventor 司大军钱迎春李玲芳陈义宣游广增陈姝敏肖友强
Owner YUNNAN POWER GRID
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