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Rapid grid failure positioning method based on dependency graph of entities

A dependency graph and location method technology, which is applied in the field of fast fault location of power grid based on the dependency graph between entities, can solve problems affecting the correctness of script work, and achieve the effect of simplifying the process of fault location

Active Publication Date: 2013-04-03
JIANGSU ELECTRIC POWER CO +2
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Problems solved by technology

The biggest shortcoming of this method is how to define and obtain corresponding failure cases
2. The fault alarm location method based on script description. This method will pre-define a set of related alarm script description language. Power grid dispatching experts will use the script to describe the fault alarm location process based on their own knowledge. The script is essentially a Based on the rule discovery process, but in view of the increasing scale and complexity of the power grid, the limitation of the occurrence time and sequence of alarm events will affect the correctness of the script work

Method used

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  • Rapid grid failure positioning method based on dependency graph of entities
  • Rapid grid failure positioning method based on dependency graph of entities

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Embodiment Construction

[0028] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated.

[0029] In order to realize the real-time monitoring and comprehensive management of the smart grid, alarm devices are usually installed at the key nodes and key equipment of the smart grid to monitor the relevant parameters of the key nodes and the key equipment. In order to realize the present invention, it is necessary to distinguish the "levels" of the key nodes and the key equipment, and the level of the "level" appearing hereinafter is defined in the following way: if the failure alarm of equipment A depends on the failure of equipment B When an alarm occurs, device B is considered to be the lower layer device of device A.

[0030] Such as figure 1 As shown, the grid fault rapid location method based on the inter-entity dependency graph proposed by the present invention specifically includes ...

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Abstract

The invention provides a rapid grid failure positioning method based on a dependency graph of entities. According to the dependency graph of the entities, by the aid of 'layer reachability' algorithm, a large amount of failure alarm information in a smart grid can be rapidly screened, a real device with failure is accurately positioned, accordingly, a large amount of time is saved for subsequent work, and economic loss caused by incapability of positioning grid failure can be decreased. Compared with an existing solution, the dependency among the entities is represented by means of the dependency graph of the entities, and failure positioning inference based on the dependency graph of the entities is simple and practicable.

Description

technical field [0001] The invention relates to the technical field of power grid fault location, in particular to a fast power grid fault location method based on a dependency graph between entities. Background technique [0002] With the development of modern power grids, grid intelligence has become the development trend of modern power grids. An important feature of smart grids is real-time, online and continuous security assessment and analysis capabilities. An important technical means of transformation. The centralized monitoring and alarm system obtains a large amount of operating data, system or fault information from various power grid dispatching systems or system-related equipment, and processes and analyzes this massive information, and finds and isolates faults in time from the data. However, as the power grid dispatching automation system becomes more and more complex, and the corresponding systems or equipment continue to increase, any point of failure will ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
Inventor 孙大雁张国江徐春雷张龙张斌谢林枫官国飞张明袁丁宋庆武
Owner JIANGSU ELECTRIC POWER CO
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