Modeling method for actual measurement of electromechanical transient model of 39-phase self-excited brushless excitation system of nuclear power unit

A technology of excitation system and nuclear power unit, applied in the field of electric power system, can solve the technical difficulties of the nuclear power brushless excitation system, the inability to measure the armature voltage, etc., so as to avoid the problem of multiple solutions and improve the simulation accuracy.

Active Publication Date: 2017-04-26
STATE GRID CORP OF CHINA +3
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  • Abstract
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  • Claims
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Problems solved by technology

However, for the multi-phase rectified brushless exciter, the armature terminal is much more than that of the three-phase brushless exciter, and it rotates with the rotor, the armature voltage cannot be measured, which makes the parameter measurement modeling of the nuclear power brushless excitation system cause technical difficulties

Method used

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  • Modeling method for actual measurement of electromechanical transient model of 39-phase self-excited brushless excitation system of nuclear power unit
  • Modeling method for actual measurement of electromechanical transient model of 39-phase self-excited brushless excitation system of nuclear power unit
  • Modeling method for actual measurement of electromechanical transient model of 39-phase self-excited brushless excitation system of nuclear power unit

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Embodiment 1

[0053] Embodiment 1: below with figure 2 The multi-phase rectification self-excited brushless excitation system of a typical nuclear power unit shown is taken as an example to further describe the present invention in detail, but the present invention is not limited to the given example.

[0054] Using the method provided by the invention to carry out actual measurement and modeling of the electromechanical transient model of the nuclear power unit excitation system power system, the steps are as follows:

[0055] Step 1: According to the excitation regulator and generator data, check whether the equipment can be used image 3 Indicated by the model of , if there is a difference, modify accordingly;

[0056] Step 2: Under static conditions, the model parameters of the excitation regulator are actually measured, and a typical time-domain identification method or frequency-domain identification method can be used. The comparison of theoretical calculation and actual measureme...

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Abstract

The invention relates to an electromechanical transient model actual measuring and modeling method for a nuclear power unit 39-phase self-excitation brushless excitation system. Based on structure characteristics of the nuclear power unit 39-phase self-excitation brushless excitation system and static and dynamic test actually measured data, model parameters for power system electromechanical transient analysis are obtained, and verification is carried out on model precision in the stable analysis process. The method solves the problem that a nuclear power unit multi-phase rectifier brushless excitation system lacks calculation model parameters according with actual situations, the precision when an electromechanical transient program calculates nuclear power unit features can be effectively improved, and powerful supporting is provided for safe and stable operation of a power grid.

Description

technical field [0001] The invention relates to the field of power systems, in particular to an electromechanical transient model measurement and modeling method for a 39-phase self-excited brushless excitation system of a nuclear power unit. Background technique [0002] With the development of society and economy, my country's demand for electricity continues to increase, and the contradiction between the relative shortage of energy and the large amount of pollution emitted by traditional coal-fired thermal power units has become increasingly prominent. Nuclear energy is a modern energy that can replace conventional energy on a large scale. It is clean and economical. Due to air pollution problems, my country is currently restarting nuclear power construction. According to the "China Nuclear Power Medium and Long-term Development Plan", my country's nuclear power installed capacity will reach 40 million kilowatts in 2015, and 18 million kilowatts are under construction; i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B17/02
Inventor 江伟黄文英黄道姗陈峰余秀月黄霆杨桂钟吴丹岳徐振华张健施晟
Owner STATE GRID CORP OF CHINA
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