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Method for diagnosing faults of power system on the basis of protecting action chain

A protection action and fault diagnosis technology, applied in the direction of fault location, information technology support system, electrical components, etc., can solve problems that are difficult to be effectively practical

Active Publication Date: 2011-03-23
NR ELECTRIC CO LTD +1
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Problems solved by technology

[0009]The problem to be solved by the present invention is: in the face of the complex power grid structure, there are many problems in the existing power system fault diagnosis method, it is difficult to be effectively practical, and it is necessary to provide A power system fault diagnosis method suitable for the centralized control station monitoring system, making full use of the rich alarm information data of the centralized control station system, and judging the fault location of the power system based on a simpler network modeling method and protection modeling method Methods

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  • Method for diagnosing faults of power system on the basis of protecting action chain
  • Method for diagnosing faults of power system on the basis of protecting action chain
  • Method for diagnosing faults of power system on the basis of protecting action chain

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Embodiment Construction

[0077] The implementation of the method of the present invention will be described in detail below.

[0078] 1. Build a model:

[0079] 1. Network modeling, filling the primary equipment and its connection relationship into the database. This work can be completed by using the very mature image-model library integration technology in China, combined with graphic elements and graphic editing tools, through the two-step operation of drawing and filling the library. The power components are first generated through the graphic element editor, and then, in the graphic editing tool, the user uses the power components to construct the plant station or system single-line diagram, and generates the power system plant station and system structure model through this drawing method, which conforms to the IEC61970 standard. Then use this model to generate a network device library by filling the library. The network device library is not only used for network modeling, but also serves as a...

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Abstract

The invention discloses a method for diagnosing faults of a power system on the basis of a protecting action chain, comprising the following steps of: firstly, establishing a model, including network modeling and protective information modeling; and secondly, diagnosing the faults on the basis of the protecting action chain by alarm information of a power system in a grid dispatching automation system. According to the method, the matching relationship between the protecting action alarm and the action alarm of a circuit breaker, important grades of the protecting action and the effective relationship among protected main equipment associated with the protecting action can be analyzed, a protecting action chain by taking a suspended fault element as a unit can be formed, the fault position of the power system can be diagnosed and quick diagnose result can be analyzed; and meanwhile, since the requirement on the network modeling is not high, the model is convenient for maintenance, in particular in a dispatching system which is more difficult to model and has not high high-grade application degree. The method for diagnosing the faults has low requirement on the network modeling andis quite practical.

Description

technical field [0001] The invention relates to a power system fault diagnosis method, which is suitable for diagnosing the fault position of the power system in a centralized control station monitoring system, and is a power system fault diagnosis method based on a protection action chain. Background technique [0002] With the advancement of science and technology and the improvement of automation level, the telecontrol information and relay protection information connected to the dispatching system are becoming more and more abundant. The rich telecontrol and protection information is a double-edged sword. On the other hand, when a fault comes, a large amount of information pours into the monitoring background in a short period of time, including correct alarm information, misinformation, repeated information, irrelevant information, etc., which often make the The monitoring personnel were overwhelmed and at a loss. [0003] From the perspective of the dispatcher as the ...

Claims

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Application Information

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IPC IPC(8): H02J13/00G01R31/08
CPCY04S10/522Y04S10/52
Inventor 夏可青顾全姜彬陈根军
Owner NR ELECTRIC CO LTD
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