A Clustering Method for Relay Protection Devices Based on Unsupervised Learning
A relay protection device, unsupervised learning technology, applied in emergency protection circuit devices, electrical components, electrical digital data processing, etc. The effect of difficult classification and accurate automatic clustering
Active Publication Date: 2015-11-11
STATE GRID CORP OF CHINA +2
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Problems solved by technology
[0004] The relay protection device realizes the rapidity and controllability of power grid accident removal, but it also brings data disasters such as many types and numbers of devices to the system integrating relay protection devices, that is, the power grid fault information system.
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[0030] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0031] The classification of relay protection devices is not only the classification of devices by manufacturer and model, but also the classification of devices of the same model with different functions from the same manufacturer and the classification of devices with the same function in different models, such as a certain type of line protection device and main transformer protection Device division. Therefore, the present invention uses the fixed value name set by the protection device as the basis of clustering, and the fixed value name is the data dictionary sent to the information system by the relay protection device to determine the fault of the power grid.
[0032] Such as figure 2 As shown, an unsupervised learning-based relay protec...
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The invention discloses a relay protection device clustering method based on unsupervised learning. The relay protection device clustering method is characterized in that on the premise of no samples or few samples, a relay protection device is clustered through the fixed values of the device; the method comprises the step of relay protection device data preprocessing, the step of device clustering of unsupervised learning and the step of visualization, a replay protection device data processing module ensures that initialization device types needed by a device clustering module of the unsupervised learning are provided under the condition of no samples or few samples, the device clustering module of the unsupervised learning carries out type division on the device fixed values with high dimensional data and uncertain dimensions in the mode of statistical learning, a clustering result is shown by a visualization module in a tree mode, and classification optimization is carried out by absorbing expert knowledge. The method overcomes the difficulty of high-dimensional few sample learning and classifies mass relay protection devices in a production system, meanwhile, the feedback of the expert knowledge is utilized for solving the problem that the mass relay protection devices are difficult to classify, precise automatic clustering of the devices is achieved, and the precision and reliability of transmission of grid fault data in a power secondary system are improved.
Description
technical field [0001] The invention relates to the automation field of electric power secondary systems, in particular to a non-supervised learning-based relay protection device clustering method in a power grid fault information system. Background technique [0002] Under the premise of a reasonable power grid structure, the relay protection device is an important part of the power system and the key to ensure the safe operation of the power system and power equipment. The correct action of the relay protection device plays an important role in ensuring the safe operation of the power system. Almost every major power system collapse accident is caused by the malfunction of relay protection devices that do not meet the overall requirements. "Technical Regulations for Relay Protection and Safety Automatic Devices" GB / T14285-2006 puts forward specific requirements for various protections of different voltage levels, and installs full-line quick-acting protection for lines, a...
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IPC IPC(8): G06F19/00H02H7/00
Inventor 李斌郭雅娟张小易陈锦铭崔高颖袁宇波孔庆祝
Owner STATE GRID CORP OF CHINA