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Simplification method for optimal cutting machine control strategy search of electric system transient stability

A transient stability, power system technology, applied in data processing applications, instruments, calculations, etc., can solve problems such as large errors, and achieve results of great theoretical and engineering significance

Active Publication Date: 2015-02-04
STATE GRID ELECTRIC POWER RES INST +3
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Problems solved by technology

[0005] SEEAC is an EEAC algorithm specifically for classical models. It uses the assumption of an ideal two-group model. It is essentially a model agglomeration technique, so the error is large.

Method used

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  • Simplification method for optimal cutting machine control strategy search of electric system transient stability
  • Simplification method for optimal cutting machine control strategy search of electric system transient stability
  • Simplification method for optimal cutting machine control strategy search of electric system transient stability

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Embodiment Construction

[0039] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0040] figure 1 Step 1 in the above describes a calculation example in the complete set of expected faults, applying the classification method in the patent application 201410271454.2 "Power System Transient Stability Evaluation Predicted Fault Fast and Robust Classification Method", and calculating and analyzing the results according to the margin of SEEAC and DEEAC algorithms and its comparison information to classify the calculation examples, and identify them as one of five categories: stable, suspected stable, critical, suspected unstable, and unstable, that is, by mining transient stability analysis algorithms with different integration steps The different margin information contained in the interval and the comparison results reflect the time-varying degree of the research example, and combine the fault information to form identification rul...

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Abstract

The invention discloses a simplification method for the optimal cutting machine control strategy search of electric system transient stability, and belongs to the technical field of electric system emergency control. On the basis of an EEAC (Extend Equal Area Criterion), according to the analysis results and the difference of a SEEAC (Static EEAC) algorithm and a DEEAC (Dynamic EEAC) algorithm, an anticipatory fault set is classified on the basis of transient stability severity; a diffset which is identified as an unstability class is subjected to a simplification operation by utilizing an intermediate result subjected to margin calculation through the SEEAC algorithm and the DEEAD algorithm during identifiction; meanwhile, a cutting machine control strategy checking index is designed to check the effectiveness of each cutting machine and guide a simplification method and a traditional method to switch so as to guarantee that the obtain cutting machine control strategy is optimal. The method can enable most parts of diffsets which are identified as the unstability class to obtain the optimal cutting machine control strategy by applying the simplification method without adding other calculation amounts, and has a great theoretical and engineering meaning for the on-line search of the electric system transient stability.

Description

technical field [0001] The invention belongs to the technical field of power systems and automation thereof. More precisely, the invention relates to a simplified method for searching for an optimal cutting control strategy for power system transient stability. Background technique [0002] The safe and stable operation of the power system is related to social stability and economic development. With the rapid development of UHV and smart grid construction, the maturity of the power market mechanism, and the increasing risk of natural disasters, the dynamic characteristics of large power grids are becoming more and more complex. , the power grid operation control is becoming more and more difficult. Therefore, the realization of online analysis and control of power system transient stability has become a key element to solve this series of problems. in the application. [0003] The EEAC algorithm framework composed of static EEAC (SEEAC), dynamic EEAC (DEEAC) and integrated...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
CPCG06Q50/06
Inventor 薛禹胜黄天罡薛峰徐泰山王昊昊鲍颜紅宣筱青
Owner STATE GRID ELECTRIC POWER RES INST
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