Transient stability optimal correcting and control system and method for power system

A transient stability and power system technology, applied in the direction of instruments, data processing applications, calculations, etc., can solve problems such as inability to achieve the effect of improving the operation level, making it simple and easy to compile, and improving voltage quality and safety and stability

Active Publication Date: 2014-12-24
GUANGXI UNIV
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a power system transient security and stability optimal correction for the shortage of the existing power system that cannot make the evaluated power system in a transiently stable power grid operation mode under sudden faults The control system and method are to improve the transient stability of the power grid of the evaluated power system, so that it is always in a transient safe and stable power grid operation mode, and can perform power flow optimization calculations on the power grid of the evaluated power system, so as

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  • Transient stability optimal correcting and control system and method for power system
  • Transient stability optimal correcting and control system and method for power system
  • Transient stability optimal correcting and control system and method for power system

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[0035] The technical solutions and beneficial effects of the present invention will be further described below in combination with specific embodiments and accompanying drawings.

[0036] The models are roughly divided into two categories. One is based on time domain simulation, which converts the rotor motion equation into an equivalent algebraic equation, and directly adds it to the optimal power flow model together with the angle criterion as a constraint; or based on the Lyapunov direct method. , adding the equation and stability criterion directly. The former method has an accurate model and the results are accurate and reliable, but it requires a large amount of calculation and takes a long time; while the latter method is more conservative.

[0037] Based on the optimal power flow, the present invention uses the implicit trapezoidal integral rule to differentiate the motion equation of the generator rotor under a fault as an equality constraint, and adds the relative sw...

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Abstract

The invention provides a transient stability optimal correcting and control system and method for a power system. The system comprises a data collecting module, a computation execution module, a data analysis module and a correction execution module, wherein the data collecting module obtains a BPA load flow format original data report and a BPA transient stability format original data report in a current operation mode; a BPA load flow computation program and a BPA transient stability computation program are used for computing the BPA load flow format original data report and the BPA transient stability format original data report; the BPA load flow format original data report and the BPA transient stability format original data report are analyzed by means of a self-defining data interface module; the original data reports are optimized and corrected by means of a modern interior point algorithm. By means of the system and method, programming of a transient security and stability operation mode of a power grid is easy, work procedures are reduced, programming time is shortened, labor intensity and pressure of workers are reduced, and voltage quality, safety and stability of operation of the power grid are comprehensively improved.

Description

technical field [0001] The invention relates to the field of power system transient stability analysis and optimization, in particular to a power system transient stability optimal correction control method based on BPA and transient stability constraint optimal power flow. Background technique [0002] In the current competitive electricity market environment, the operation of the power system is often close to its stable limit state. Once a fault occurs or is disturbed, it will often cause a large-scale power outage or even a system crash. This makes it possible to conduct power system operation stability analysis (especially transient stability analysis) and to find the optimal correction. Nor can it be guaranteed. This requires that the operation planning must optimize the working conditions under the premise of satisfying the stability, that is, adding stability constraints, especially transient stability constraints, to the optimal power flow. Contents of the inven...

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Application Information

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IPC IPC(8): G06Q50/06
Inventor 阳育德覃秀君李雨刘文泰
Owner GUANGXI UNIV
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