Relay protection system risk assessment method based on Markov reliability correction model

A technology for relay protection and model correction, applied in the directions of instruments, data processing applications, resources, etc., can solve problems such as the inability to accurately assess the risk level of relay protection systems

Inactive Publication Date: 2017-03-22
ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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Problems solved by technology

[0003] The reliability correction method of the risk assessment model of the relay protection system proposed in the present invention is in view of the fact that the failure probability analysis of the current relay protection device is affected by a large number of interference factors, resulting in the inability to accurately evaluate the risk level of the relay protection system

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  • Relay protection system risk assessment method based on Markov reliability correction model
  • Relay protection system risk assessment method based on Markov reliability correction model
  • Relay protection system risk assessment method based on Markov reliability correction model

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Embodiment

[0059] One, the following combination figure 2 The present invention will be described in detail.

[0060] Such as figure 2 As shown, a method for correcting the reliability model of a relay protection system of the present invention includes the following steps:

[0061] Step 1: Obtain the operating status information of the relay protection system; since the risk assessment model of the relay protection system involves many factors, its modeling and index selection need to be supported by a large amount of operating data. Obtaining the operation status information of the relay protection system can not only provide the basis for the type and weight of the impact parameters of the risk assessment model, but also diagnose the health status of the electrical equipment.

[0062] Step 2: Extract the parameters that affect the operation of relay protection, and set the weight of the state quantity; there are many factors that affect the risk assessment of relay protection, inc...

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Abstract

The invention provides a relay protection system risk assessment method based on a Markov reliability correction model. The steps of the method include first obtaining relay protection system operation state information extracting relay protection operation influence parameters, and utilizing an analytic hierarchy process to assess state quantity weights; then calculating possible loss and failure probability according o a relay protection device possible loss model and failure probability model; performing correction processing on the obtained failure probability on the basis of the Markov reliability correction model; and finally obtaining a risk value quantifying a system risk level by a relay protection system risk assessment model. The relay protection system risk assessment method based on the Markov reliability correction model extracts the influence parameters hindering normal operation of the relay protection system, sets the state quantity weights according to the analytic hierarchy process, builds the scientific and reliable risk assessment model based on the Markov correction model, and thus can visually reflect the relay protection system operation state.

Description

technical field [0001] The invention relates to the technical field of state evaluation and risk assessment of a relay protection system in a power system, and relates to a risk assessment method for a relay protection system based on a Markov reliability correction model. Background technique [0002] When the power system fails or operates under abnormal conditions, the relay protection system should automatically cut off the faulty equipment in a short time and within a short range, or send a signal to the on-duty personnel, and then eliminate the root cause of the abnormal condition, and finally alleviate the fault The impact of equipment on the normal operation of non-faulty equipment to ensure the normal power supply of adjacent areas. Therefore, it is of great significance to establish a more accurate risk assessment model of relay protection system and diagnosis and analysis of operating status. [0003] The reliability correction method of the risk assessment model...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q50/06
Inventor 高吉普赵立进黄良王宇徐长宝应黎明贾永天王玉磊杨磊
Owner ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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