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Oscillation source localization method, device, terminal and readable storage medium for forced oscillation

A positioning method and oscillation source technology, applied in circuit devices, reducing/preventing power oscillation, AC network circuits, etc., can solve the problem of low positioning accuracy of the oscillation source, improve practical operability, improve positioning accuracy, and reduce detection. desired effect

Active Publication Date: 2020-06-26
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of low positioning accuracy of the oscillation source in the prior art

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  • Oscillation source localization method, device, terminal and readable storage medium for forced oscillation
  • Oscillation source localization method, device, terminal and readable storage medium for forced oscillation
  • Oscillation source localization method, device, terminal and readable storage medium for forced oscillation

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Embodiment Construction

[0032] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention provides an oscillation source positioning method and device of a forced oscillation, a terminal and a readable storage medium. The method comprises the steps that the angle measurementdata and the active power measurement data of a generator rotor are acquired; according to the angle measurement data and the active power measurement data, the Mahalanobis distance measurement data of a multivariate time series are acquired; and the position of the oscillation source of the forced oscillation is determined according to the Mahalanobis distance measurement data. According to the method, the multivariate time series of the angle measurement data and the active power measurement data is established; dynamic time warping is carried out on the multivariate time series; the Mahalanobis distance measurement data of the multivariate time series of two kinds of measurement data are acquired; finally the position of the oscillation source is determined according to the Mahalanobisdistance measurement data; the detection requirement for start-up time is reduced; the actual operability of the algorithm is improved; and the accuracy of oscillation source positioning is improved.

Description

technical field [0001] The invention relates to the technical field of forced oscillation positioning in electric power systems, in particular to a method, device, terminal and readable storage medium for locating an oscillation source of forced oscillation. Background technique [0002] The low-frequency oscillation in the power system reduces the upper limit of the power transmission of the system and may cause damage to the equipment in the system, which poses a serious threat to the security and stability of the large-scale power grid. The main cause of low-frequency oscillation is insufficient damping in the system, and its suppression method includes the control of the parameters of the power system stabilizer and the connection line. However, there is also a forced oscillation caused by resonance in the power system, and the system has sufficient damping when this oscillation occurs; if a disturbance close to the frequency of the system itself is injected into any nod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/24
CPCH02J3/24H02J2203/20
Inventor 於喆孟垚史迪陆晓苏大威徐春雷张琦兵王之伟潘森
Owner STATE GRID CORP OF CHINA
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