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Intelligent substation online fault analysis method

A fault analysis method and smart substation technology, applied in the direction of electrical components, circuit devices, information technology support systems, etc., can solve problems such as long fault processing time, poor real-time performance, lack of pre-processing and pre-analysis, etc., to ensure timeliness and Reliability, reduce the difficulty of troubleshooting, save the effect of troubleshooting time

Active Publication Date: 2019-06-04
STATE GRID SHANDONG ELECTRIC POWER +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the station usually only sends important information to the dispatching center in real time, lacking preprocessing and pre-analysis, resulting in incomplete and incomplete information, which affects the accuracy of fault judgment of the dispatching automation master station system
The current power grid dispatching center adopts a centralized monitoring, analysis, and control mode, while some systems still use polling to upload information, which is slow and has poor real-time performance.
When a fault occurs, dispatching and operating personnel can only rely on the SCADA system to obtain real-time information, and with the assistance of relay protection professionals, use the wave recording information provided by the fault recording system to conduct comprehensive fault research and judgment. slow speed problem

Method used

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  • Intelligent substation online fault analysis method

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Embodiment Construction

[0040] Hereinafter, the embodiments of the present invention will be described in detail with reference to the drawings.

[0041] Such as figure 1 Shown is a block diagram of the logic flow of steps 2 to 6 of the present invention. An online fault analysis method for smart substations, including the following steps:

[0042] Step 1. Configure the fault instance template, configure the association relationship between the SOE signal and the fault instance, configure the fault resolution strategy, and write it into the substation model database;

[0043] The fault instance template includes fault type, fault description, SOE signal associated with the fault, signal occurrence sequence, fault resolution strategy associated with the fault, etc.;

[0044] The fault resolution strategy is derived from an expert decision library, and the association binding of the fault instance and the fault resolution strategy is completed based on experience.

[0045] Step 2. Read the substation model data...

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Abstract

The invention relates to an intelligent substation online fault analysis method. The intelligent substation online fault analysis method comprises the steps of: performing real-time analytical processing on multi-source alarm information at a station end; analyzing signal action validity according to time constraint conditions; reading a fault instance associated with a valid signal for fault matching, wherein matching criteria comprises signal full action and signal action logics; combining with a fault recording file generated when a protective action signal is produced; performing false alarm degree analysis of the fault, and finally forming a comprehensive fault briefing comprehensively covering information such as fault data, fault instance, troubleshooting strategy and false alarm degree; and transmitting briefing data to a scheduling center. The intelligent substation online fault analysis method disclosed by the invention can effectively extract action signals, improve the analysis value of the data, improve the comprehensiveness of the alarm information, remove the false alarms in the station, improve the alarm precision, improve the system reliability, reduce the troubleshooting difficulty of the operation personnel, and save the troubleshooting time.

Description

Technical field [0001] The invention belongs to the technical field of power system substation automation, and in particular relates to an online fault analysis method of an intelligent substation. Background technique [0002] At present, my country's power system is in a period of rapid development. With the advancement of the construction of smart substations, the automation level of substations continues to improve, and the information collected at the station end is becoming more abundant. However, the station usually only sends important information to the dispatch center in real time, and lacks pre-processing and pre-analysis, resulting in incomplete and incomplete information sent, which affects the accuracy of the fault judgment of the dispatch automation master station system. At present, the power grid dispatch center adopts centralized monitoring, analysis, and control mode, while some systems still use polling methods to upload information. The speed is slow and real...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
CPCY04S10/16Y02E60/00
Inventor 王亚飞韩明星徐万米张辰杨磊于洋王磊王磊磊张扬张朋丰杨敬瑀宋元江于红侯念国赵彦龙赵增双王讯朱锋白梓永司书凯田国锋宋晓娜张凯
Owner STATE GRID SHANDONG ELECTRIC POWER
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