A synchronous generator excited system identification signal generation device

A synchronous generator and signal generation technology, applied in the field of electric power system, can solve the problems of no reserved identification signal, difficulty in excitation system identification test, failure to use identification signal input method, etc., to achieve the effect of simplifying test equipment and improving test efficiency

Inactive Publication Date: 2008-07-09
HUAZHONG UNIV OF SCI & TECH +1
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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...

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  • A synchronous generator excited system identification signal generation device
  • A synchronous generator excited system identification signal generation device
  • A synchronous generator excited system identification signal generation device

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing and example the present invention is described in further detail.

[0018] As shown in Figure 1, the synchronous generator 1 is connected to the power system 4 for operation. The excitation system 2 tracks and detects the generator terminal voltage Ut in real time through the voltage converter 3 and inputs it to the control signal input port 5 of the excitation system 2. The excitation system 2 According to the change of the voltage Ut, the control unit provides an appropriate excitation current for the synchronous generator 1. For generators with an external signal input port 6 reserved for the excitation system 2, identification signals (including pseudo-random signals and step signals) can be input from this port to facilitate model identification tests of the excitation system. If the control unit of the excitation system 2 has its own identification test function, the identification test can also be carried out through...

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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...

Claims

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Application Information

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IPC IPC(8): H02P9/14
Inventor 文劲宇王少荣蔡敏孙建波李大虎孙海顺程时杰
Owner HUAZHONG UNIV OF SCI & TECH
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