Unlock instant, AI-driven research and patent intelligence for your innovation.

Transient stability real-time prediction method and device after power grid fault

A technology for transient stability and power grid failure, applied in circuit devices, prediction, neural learning methods, etc., can solve problems such as the inability to predict real-time transient stability

Active Publication Date: 2021-05-18
GUANGDONG POWER GRID CO LTD +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method and device for real-time prediction of transient stability after power grid failure, which is used to solve the technical problem that the prior art cannot simply and quickly perform real-time prediction of transient stability after power grid failure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Transient stability real-time prediction method and device after power grid fault
  • Transient stability real-time prediction method and device after power grid fault
  • Transient stability real-time prediction method and device after power grid fault

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] Embodiments of the present invention provide a method and device for real-time prediction of transient stability after a power grid failure, which is used to solve the technical problem that the prior art cannot simply and quickly perform real-time prediction of the transient stability after a power grid failure.

[0055] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. 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.

[0056] see figure...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a transient stability real-time prediction method and device after a power grid fault, and the method comprises the steps: collecting the disturbed trajectory data of a power grid through a synchronous phasor measurement unit (PMU) when the fault of the power grid is detected; calculating response energy indexes respectively corresponding to all the unit pairs by adopting the disturbed trajectory data of the power grid; adopting the response energy indexes corresponding to all the unit pairs to construct unit pair energy characteristic graph data; and inputting the unit pair energy characteristic graph data into a preset trained convolutional neural network model to obtain a transient stability prediction result after the power grid fault. According to the method and device, the power grid disturbed trajectory data is converted into the unit pair response energy index, the unit pair energy characteristic graph is generated, the unit pair energy characteristic graph is adopted as an input quantity, and the convolutional neural network model containing the attention mechanism is combined, so that the flow of transient stability information in the model can be effectively improved; and the transient stability of the power grid after the fault can be quickly and simply predicted in real time.

Description

technical field [0001] The invention relates to the technical field of stability prediction, in particular to a method and device for real-time prediction of transient stability after a power grid fault. Background technique [0002] With the rapid development of the power system, large-scale new energy access and interconnection with regional power grids have become a trend. The complex grid structure has brought severe challenges to the safe and stable operation of the system. Therefore, a fast and effective Transient Stability Assessment (TSA) method is needed to analyze the operating status and potential risks of the power grid in order to respond to grid safety accidents in a timely manner. occur. [0003] The existing transient stability evaluation methods mainly include the following categories: one is the traditional time-domain simulation method and the direct method. This type of method is calculated based on the system model parameters. The method is intuitive an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06G06Q10/04G06N3/04G06N3/08H02J3/00H02J3/38
CPCG06Q50/06G06Q10/04G06N3/08H02J3/00H02J3/38H02J2203/10H02J2203/20G06N3/045Y04S10/22Y02E40/70Y02E60/00
Inventor 杨跃刘挺坚张俊峰张毅超吴晓宇赵艳军王钤唐景星梁晓兵刘军王义勇
Owner GUANGDONG POWER GRID CO LTD