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Virtual information fusion power grid alarming method based on probabilistic reasoning

A technology of virtual information and probabilistic reasoning, applied in the field of fault identification of power system operation monitoring, to achieve the effects of high feasibility, improved timeliness and accuracy, and good application prospects

Inactive Publication Date: 2015-07-08
ECONOMIC TECH RES INST OF STATE GRID HENAN ELECTRIC POWER +1
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  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a virtual information fusion power grid alarm method based on probabilistic reasoning to solve the problem of fault identification in the case of power system alarm

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  • Virtual information fusion power grid alarming method based on probabilistic reasoning
  • Virtual information fusion power grid alarming method based on probabilistic reasoning
  • Virtual information fusion power grid alarming method based on probabilistic reasoning

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Embodiment Construction

[0030] The present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0031] like figure 1 As shown, the present invention provides a kind of virtual information fusion grid alarm method based on probabilistic reasoning, comprising the following steps:

[0032] (1) According to all the alarm information received when the power grid disturbance or fault occurs, determine all the cause events set Events, Events is the element e j set, and then classify all the alarm information received, and establish three alarm sequence sets: the voltage limit alarm set VL{a i}, protection action alarm set PR{a i}, circuit breaker action alarm set CB{a i}, where e j is a grid event, a i for an alert message.

[0033] In this step, according to the actual situation when the grid disturbance or fault occurs, the synchronous occurrence of the protection action and the corresponding circuit breaker trip is used as the trigger co...

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Abstract

The invention discloses a virtual information fusion power grid alarming method based on probabilistic reasoning. Firstly, received alarms are classified and preprocessed, the voltage out-of-limit alarm, the protection action alarm and the breaker tripping alarm are extracted, and redundant information in the alarms is effectively screened out; secondly, the alarms are judged through probabilistic reasoning, possible causative events and event probability are obtained, and multi-angle and multi-level deep excavation and analysis on the alarm information is achieved through classification; finally, virtual information fusion is conducted on three judgment results based on the improved D-S evidence theory, and event reasoning results including an alarm source event, false alarms and missing alarms are obtained. By means of emulation proof, the method can effectively improve the timeliness and accurate rate of the alarms, the requirement for power grid real-time alarming can be met on the aspects of the processing speed and the accurate rate, feasibility is large, the method has good application prospects, and a new reference concept is provided for later alarm processing and studying.

Description

technical field [0001] The invention belongs to the technical field of fault identification for power system operation monitoring, and in particular relates to a virtual information fusion power grid alarm method based on probabilistic reasoning. Background technique [0002] When the power grid fails or runs abnormally, the energy management system (EMS) of the dispatch center will continuously receive a large number of alarm information in a short period of time, including voltage limit, power flow limit, relay protection device action, Various alarms such as switch trip, recloser, communication error, etc. With the expansion of the grid scale and the application of various intelligent electrical devices in the power system, the structure of the grid becomes more complex, and the alarm information submitted to the dispatch center shows an explosive growth, including various false alarms. How to quickly process massive alarm information in a short period of time and provid...

Claims

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Application Information

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IPC IPC(8): G01R31/08G06Q50/06
Inventor 袁鹏田春筝杨红旗
Owner ECONOMIC TECH RES INST OF STATE GRID HENAN ELECTRIC POWER
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