Method and system for parameter setting of power system stabilizer for speed control system
A technology of power system and speed control system, which is applied in the field of electric power grid, can solve the problems of inaccurate parameter setting methods, etc., and achieve the effects of reducing subsequent low-frequency oscillation, improving suppression effect, and strong practicability
Active Publication Date: 2016-01-06
GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD
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[0005] Based on this, it is necessary to provide a simple and accurate parameter setting method and system for the power system stabilizer of the speed control system in view of the inaccurate parameter setting method of the power system stabilizer of the speed control system
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[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below according to the drawings and embodiments. It should be understood that the specific implementations described here are only used to explain the present invention, not to limit the present invention.
[0024] Such as figure 1 As shown, a power system stabilizer parameter tuning method of a speed control system is characterized in that it includes the steps:
[0025] S100: Obtain power system data, and determine the low-frequency oscillation frequency f that needs to be suppressed in the power system d .
[0026] Using the characteristic root of the characteristic equation to calculate the oscillation frequency f d , or use the Prony program to calculate the characteristic root s=σ+jω of the system matrix d , damping ratio , Oscillation frequency f d etc., select the low-frequency oscillation mode with rel...
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The invention provides a method and system for setting parameters of a power system stabilizer of a speed regulation system. The whole computational process is easy and convenient, complex computation is not required, and obtaining and computation of data are computed and processed according to the requirements of the current environment, so that the method and system are suitable for various different situations, the practicability is high, and the computation is precise. In addition, the GPSS restraining low-frequency oscillation method is adopted, due to the fact that GPSSs of other generator sets and power grid models are not depended on, the decoupling analysis of multiple machines is achieved, and the efficient and accurate method is provided for restraining low-frequency oscillation. The restraining effect of the low-frequency oscillation is greatly improved, an operating person can master and evaluate the running status of a power system, timely take measures to improve the running status, make a corresponding emergency pre-arranged plan, and reduce occurrences of subsequent low-frequency oscillation, and therefore the method and system are of great significance in reducing the impact to the power grid and ensuring safety operation of the system.
Description
technical field [0001] The invention relates to the technical field of power grids, in particular to a parameter setting method and system for a power system stabilizer of a speed regulating system. Background technique [0002] Low-frequency oscillations occur frequently in large-scale interconnected power grids, often on long-distance, heavy-duty transmission lines. With the increasing scale of interconnected power systems, regional low-frequency oscillations caused by system interconnections have become threats to the safe and stable operation of interconnected power grids. 1. One of the important factors restricting the transmission capacity of the power grid, it is necessary to fully understand the low-frequency oscillation problem of the power system and take effective suppression measures. At present, the common solution to suppress low-frequency oscillation is to install a power system stabilizer (PSS) on the excitation system of the generator, which obtains the loca...
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IPC IPC(8): H02J3/00H02J3/24
Inventor 金格刘石邓少翔谭金
Owner GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD