Test method for kinetic energy of generator

Abstract

The invention belongs to the technical field of power grid stabilization analysis of an electric power system, and specifically relates to a test method for the kinetic energy of a generating set. The test method mainly includes following steps: (1) building a test device for the kinetic energy of the generator; (2) setting the generator to be in a grid-connected operating state with 50% rated load; (3) setting the rotating speed of the generator to maintain an operation control mode of 3000 r / min after load rejection; (4) starting a kinetic energy measuring device, and entering an input signal automatic trigger acquisition mode; (5) connecting the generator and the power grid, switching off an outlet switch, realizing load rejection, and enabling a generator rotor to speed up via the energy of the generator before load rejection; and (6) calculating the kinetic energy of the generator according to data information measured by the measuring device. According to the test method, automatic test and data analysis of signals for reflecting the kinetic energy of the generating set are realized via generator load rejection tests, accurate kinetic energy of the generating set can be obtained, the precision and the accuracy of stabilization calculation of the power grid are improved, the measurement of the kinetic energy of the generating set can be comprehensively and rapidly accomplished, and the analysis requirement of stabilization calculation of the power grid is satisfied.

Description

technical field [0001] The invention belongs to the technical field of power system grid stability analysis, and in particular relates to a test method for kinetic energy of a generator. Background technique [0002] For grid planning, calculation of grid operation mode, and grid stability analysis, it is necessary to model and test model parameters for generator sets, and the kinetic energy of generators is directly related to the accuracy of grid stability calculations. If the parameter in the simulation model deviates from the actual If the parameter is too large, the calculation result will threaten the safe operation of the power grid; if the parameter in the simulation model is too small, the safety margin of the power grid will be too large, resulting in waste of resources. Therefore, it is necessary to have a new testing system and method to obtain accurate kinetic energy of the generator. Contents of the invention [0003] The purpose of the present invention is ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problem of inaccurate power grid stability safety margin due to the deviation between the generator function and the actual one in the power grid simulation calculation process, and to provide a generator kinetic energy testing method to realize the on-site measurement of the generator kinetic energy. Accurate measurement meets the needs of power grid stability calculation and analysis. In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

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