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Fault source positioning method suitable for power grid dispatching control system element

A control system and power grid dispatching technology, applied in the field of power systems, can solve problems such as difficulty in finding potential system business anomalies, time-consuming search for codebooks, high detection false alarm rate, etc., to reduce the risk of fault propagation, ensure safe and stable operation, The effect of high detection accuracy

Pending Publication Date: 2022-08-05
JIANGSU ELECTRIC POWER CO
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Problems solved by technology

The information processed by case-based or code-based fault detection algorithms usually faces the curse of dimensionality due to various warning signs. Algorithms need to set thresholds through expert experience to determine fault points
The traditional detection algorithm fails to take into account the correlation and mutual influence between the various dimensions of the detection data, resulting in a high detection false alarm rate, and it is difficult to find some deep potential system business anomalies

Method used

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  • Fault source positioning method suitable for power grid dispatching control system element
  • Fault source positioning method suitable for power grid dispatching control system element
  • Fault source positioning method suitable for power grid dispatching control system element

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Embodiment Construction

[0052] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] Please refer to figure 1 The present invention is a method for early warning of fault sources of components in a power grid dispatching control system, comprising:

[0054] Step 1: Build the framework of the basic grid dispatching control system components;

[0055] Step 2: Determine the correlation coefficient matrix associated with the components in the modeling system framework;

[0056] Step 3: Generate simulated component failure time series;

[0057] Step 4: Search for fault time series to generate textual fault description;

[0058] Step 5: Build a simulated fault network set for textual faults;

[0059] Step 6: Perform local fitting of the network through the real fault network and the simulated fault network set to l...

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Abstract

The invention relates to the field of power systems, in particular to an element fault source positioning method suitable for a power grid dispatching control system. The method comprises the following steps: constructing a basic power grid dispatching control system element architecture according to the existing power grid dispatching control system structure knowledge, and then determining a correlation coefficient matrix associated with elements in a modeling system; then, Choesky factor linear transformation is utilized to generate a multi-dimensional correlation random variable sampling sequence with specified edge distribution and correlation coefficients, the multi-dimensional correlation random variable sampling sequence serves as a simulated fault time sequence, then the fault time sequence is searched to construct a simulated fault network set, and finally, local fitting is carried out through a real fault network and the simulated fault network set. And obtaining a possibility sequence of the root fault part, and realizing fault positioning. The method is high in detection accuracy.

Description

technical field [0001] The invention relates to the field of electric power systems, in particular to a component fault source locating method suitable for a power grid dispatching control system. Background technique [0002] The power grid dispatching control system has played an important role in the construction of the "large-scale operation" system, providing a good technical support for the system coordination between the control centers at all levels and the integrated operation of the entire business within the control center. Based on the basic platform of the smart grid dispatching control system, an independent time-dimension regulation full-service unified modeling system (referred to as the modeling system) is built, which avoids the interference of system maintenance and testing on the online operating system. The main functions of the modeling system include business model extraction of time sections, model collaborative verification, and fault location of off...

Claims

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Application Information

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IPC IPC(8): G05B23/02G06F11/07G06N5/02
CPCG05B23/0243G06F11/079G06F11/0754G06N5/022G05B2219/24065Y04S10/52
Inventor 周航杨斌余璟朱红勤潘小辉胡健滕力阳
Owner JIANGSU ELECTRIC POWER CO
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