Method for amending simulation parameter of generator by measured track and trace sensitivity

A technology of trajectory sensitivity and simulation parameters, applied in the field of calibrating generator simulation parameters, can solve the problem that generator simulation parameters are difficult to obtain online, etc.

Inactive Publication Date: 2009-02-18
NORTHEAST DIANLI UNIVERSITY
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Problems solved by technology

[0004] Aiming at the problem that those skilled in the art are eager to solve the problem that generator simulation parameters are difficult to obtain online, the present invention proposes a generator simulation parameter correction ...

Method used

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  • Method for amending simulation parameter of generator by measured track and trace sensitivity
  • Method for amending simulation parameter of generator by measured track and trace sensitivity
  • Method for amending simulation parameter of generator by measured track and trace sensitivity

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Embodiment Construction

[0061] 1 Trajectory error evaluation

[0062] When there is an error between the numerical simulation results of the power system and the actual measurement trajectory of the system, the following five indicators are used to evaluate the error between the simulation and the actual measurement trajectory of the system voltage phase angle. The voltage phase angle error index includes an energy error index, a first swing magnitude error, a first swing period error, a second swing magnitude error, and a second swing period error.

[0063] 1.1 Compare and analyze the entire change process of the phase angle, which is defined as the error energy index (ErrorEnergy)

[0064] EE = Σ i = 1 N ( y simu ...

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Abstract

The invention discloses a generator simulation parameters calibrating method by using a measured trajectory and the trajectory sensitivity, and the method mainly aims at the status quo that certain parameters of the generator is difficult to be obtained through the delivery test, and the parameters identification can not get rid of the limitation of the power system simulation model and parameters, furthermore, can not obtain the generator simulation parameters online. The generator parameters sensitivity to the simulation trajectory can be obtained through estimating the error between the measured trajectory and simulation trajectory, and the trajectory sensitivity is sequenced so as to determine the simulation parameter set which greatly affects the measured trajectory, the rectifiable parameters can be optimized and rectified by using the optimization method, thereby obtaining the generator simulation parameters which make the measured trajectory conform to the simulation trajectory. The method avoids the dependence on the model in traditional generator parameter identification method, has simple calculation and online application potential, and can be applied to other component simulation parameter calibration in the power system.

Description

Technical field: [0001] The invention relates to a method for correcting simulation parameters of generators by utilizing measured trajectory and trajectory sensitivity. Background technique [0002] Numerical simulation of power system is an important tool to study the dynamic behavior of power system, and plays a very important role in the safety analysis and operation of power system. Accurate simulation models and parameters are the guarantee of credible numerical simulation results. The generator is an important device in the power system, and the accuracy of its parameters directly affects the credibility of the numerical simulation, thus affecting the safety analysis level of the power system. [0003] Obtaining accurate generator simulation parameters is one of the key points of power system safety analysis. Although most of the simulation parameters have been determined through experiments before the generator leaves the factory, there are still some parameters tha...

Claims

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Application Information

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IPC IPC(8): G01R31/34
Inventor 穆钢严干贵安军张川
Owner NORTHEAST DIANLI UNIVERSITY
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