A synchronous generator excited system identification signal generation device

Abstract

The invention discloses a generating device of synchronous generator exciting system identification signals which comprises a power unit (7), a signal generating unit (8) and a control unit (9); the power unit provides the needed working power for the other two units; the signal generating unit is connected with the generator terminal three-phase voltage and a neutral point respectively, and stacks the identification signal needed by an exciting system mould identification test to the voltage signal on the end of the generator according to the control signal provided by the control unit, the exciting system connected with four integrated signals which are respectively overlapped with the identification signal is connected into an input port; the control unit is used for generating a pseudo-random or a step signal which is provided to the signal production unit, or outputs directly from an output signal port. The invention provides a new test device for the power system which not only solves the difficulty in doing the exciting system mould identification test for the generator without an extra-added signal input port, but also simplifies the test equipment, and improves the test efficiency.

Description

technical field [0001] The invention belongs to the field of power systems, and in particular relates to an identification signal generating device for an excitation system of a synchronous generator. Background technique [0002] Digital simulation of power system is one of the important means to ensure the safe and stable operation of power system. Among them, the mathematical model of excitation system of synchronous generator is the basis of digital simulation of power system. In the past, the typical structure and parameters used in the model of synchronous generator excitation system did not correspond to the actual generator. With the expansion of the scale of the power system, it is necessary to adopt the excitation system model corresponding to the actual generator set, which requires the excitation system model identification test for the generator. [0003] "Summary of Generator Excitation System Modeling and Parameter Identification" (He Renmu, Shen Feng, Han Do...

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Problems solved by technology

[0004] However, for many generators in actual operation in the power system, the input port of the identification signal is not reserved, and the control unit does not provide the identification test function, and the identification signal input method given in the reference cannot be used. Excitation system identification test brings great difficulties

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