Distribution transformer state assessment method based on kernel state quantity set
A distribution transformer and state evaluation technology, which is applied in the field of data processing, can solve problems such as insufficient attention, less state quantity data of distribution network equipment, and restrictions on the state evaluation of distribution network equipment, so as to improve evaluation efficiency, ensure accuracy, and reduce effect of demand
Inactive Publication Date: 2014-10-29
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology
However, due to the importance of power distribution equipment and the scope of influence after outage is smaller than that of power transmission equipment, and the number is large, and the degree of attention is not enough, there are almost no online monitoring devices, resulting in the status of distribution network equipment that can be obtained The data is scarce, which largely restricts the development of distribution network equipment status assessment
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[0045] The present invention provides a distribution transformer state evaluation method based on a set of core state quantities, so as to better carry out the state evaluation work of the distribution network equipment and improve the efficiency of the state evaluation work of the distribution network equipment. The state quantity described in the present invention refers to the general term of various technical indicators, performance and operating conditions that directly or indirectly characterize the status of the equipment; The obtained state quantities have a relatively large impact on the evaluation results; non-core state quantities refer to state quantities other than the core state quantities.
[0046] The core state quantity set of the distribution transformer described in the present invention is as attached figure 2 As shown, it includes two layers of first-level indicator set and second-level indicator set. The first-level indicators include winding and bushin...
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The invention provides a distribution transformer state assessment method based on kernel state quantity sets. According to the method, a maximum eigenvalue of a state quantity judgment matrix is analyzed to obtain the kernel state quantity sets needed by state assessment, so that the purpose of reducing dimensions is achieved; On the basis that weight allocation is carried out on the kernel state quantity again, an initial result of distribution transformer state assessment is determined; sensitivity of the non-kernel state quantity to the assessment result is further determined and utilized for correcting the initial assessment result, so that a more accurate final result of distribution transformer state assessment is obtained. In the assessment process, the kernel state quantity and the vicissitudinous non-kernel state quantity are taken into consideration, the requirement for data is reduced, and the accuracy of the assessment result is ensured.
Description
technical field [0001] The invention relates to a method for accurately evaluating the state of electrical equipment in a distribution network with a small amount of data, and belongs to the technical field of data processing. Background technique [0002] The distribution network is one of the main components of the power system, and its operation is closely related to the national economy and people's lives. The reliability of the distribution equipment in the distribution network is the basis for ensuring the reliable operation of the distribution network. Therefore, the evaluation of the status of the distribution equipment is one of the effective measures to improve the reliability of the distribution equipment. As the key equipment of distribution network, distribution transformer is the first step to carry out condition assessment of distribution equipment. [0003] One of the key issues in distribution transformer state assessment is the acquisition of transformer s...
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IPC IPC(8): G06F19/00
Inventor 梁海峰徐洋郝育黔李筱欢
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)