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Establishing method of generator excitation system load model

A technology of excitation system and load model, applied in teaching models, educational tools, instruments, etc., can solve problems such as accident expansion, system instability, evolution, etc., and achieve the effect of saving manpower

Inactive Publication Date: 2017-07-07
CHINA ELECTRIC POWER RES INST +3
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If positive damping cannot be provided to suppress low-frequency oscillations, it will seriously affect the stability of the system, and even cause the system to collapse and turn into a large-scale power outage
[0003] When a weakly damped or negatively damped system has a small fault or even no fault, it may cause system instability or accident expansion

Method used

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  • Establishing method of generator excitation system load model
  • Establishing method of generator excitation system load model
  • Establishing method of generator excitation system load model

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Embodiment Construction

[0048] 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 embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0049] Such as figure 1 As shown, the present invention provides a method for establishing a load model of a generator excitation system, comprising the following steps:

[0050] Step 1. Establish generator and excitation system load models in the digital-analog hybrid real-time simulation platform;

[0051] Step 2. Connect the actual excitation regulator, power system stabilizer, generator and excitation system load model to establish a closed-loop simulatio...

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Abstract

The invention provides an establishing method of a generator excitation system load model. The establishing method comprises the steps of: establishing a generator and excitation system load model in a digital-analog hybrid real-time simulation platform; connecting an actual excitation regulator, a power system stabilizer and the generator and excitation system load model, and establishing a closed-loop simulation environment; establishing generator set loaded operating conditions in the digital-analog hybrid real-time simulation platform; and conducting generator excitation system uncompensated phase-frequency characteristic measurement, power system stabilizer parameter setting calculation and a damping checking test. The establishing method disclosed by the invention realizes the effects that the staff can conduct the test under the condition of generator set loaded operation without going to the field, launch the research in power system stabilizer parameter setting, and provide training for power system stabilizer parameter setting tests, thereby avoiding the risk of conducting tests on an operating generator set, and saving a lot of manpower and material resources; and the establishing method is of great significance to the safe and stable operation of the power system.

Description

technical field [0001] The invention relates to the field of power system control and simulation, in particular to a method for establishing a load model of a generator excitation system. Background technique [0002] In order to solve the regional imbalance of power production and consumption and improve the reliability of power generation and transmission, the scale of synchronous interconnection of power systems has been continuously expanded, and a large number of new technologies have been applied. While improving the transient stability of the system, the fast excitation system reduces the damping of the power system, making low-frequency oscillations characterized by weak damping or even negative damping appear in the system. If positive damping cannot be provided to suppress low-frequency oscillations, it will seriously affect the stability of the system, and even cause the system to collapse and turn into a large-scale power outage. [0003] A weakly damped or nega...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/18
CPCG09B23/188
Inventor 武朝强夏潮魏巍霍承祥高磊朱艳卿李照庭吴剑超黄道姗林因
Owner CHINA ELECTRIC POWER RES INST
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