Fault Diagnosis and Auxiliary Decision-Making Method of Single Station Power Grid Based on Power Grid Monitoring System
A technology for power grid monitoring and power grid faults, applied in information technology support systems, electrical digital data processing, special data processing applications, etc., can solve problems such as accident judgment by monitors, difficulty in information disposal, etc., to avoid inexperienced handling and prevent accidents Effect
Active Publication Date: 2018-04-06
STATE GRID CORP OF CHINA +1
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Problems solved by technology
Since the current monitoring information points connected to the master station are independent of each other, the monitors need to constantly call different monitoring screens and make judgments based on personal experience, which causes great difficulties for the monitors to judge accidents and dispose of information
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[0026] Such as figure 1 As shown, it is a flow chart of collecting and processing fault information of a single-site power grid in the present invention, figure 2 It is a flow chart of realizing coupling reasoning of single-station-side power grid fault information in the present invention, image 3 It is a flow chart of the grid fault diagnosis and auxiliary decision-making method at the single station end based on the grid monitoring system of the present invention. The following is an illustration of the grid fault diagnosis and auxiliary decision-making method at the single station end based on the grid monitoring system of the present invention in conjunction with a calculation example:
[0027] Calculation example 1: 220kV line 604 circuit breaker of a 500kV substation fails to trip and reclose due to a fault in phase A, and the monitoring of the master station shows that phases B and C of circuit breaker 604 are closed.
[0028] The coupling decision-making steps are...
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The invention discloses a single station end fault diagnosis and auxiliary decision making method based on a power grid monitoring system. The method comprises the steps of: establishing an expert database; dividing accident information into switching value information reflecting operation states of power transformation equipment and continuous change information of process data in accidents; describing the switching value information by state elements, carrying out AND operation, and determining a fault element; carrying out multi-source information fusion on the continuous change information; matching a fusion result with expected accident sets, and identifying the fault type; determining the property of the accident according to the expert database, and carrying out accident handling auxiliary decision making; and displaying and tracking all data and results on the monitoring system in real time. According to the invention, auxiliary decision making is carried out on the single station end fault of a power grid by utilizing a computer and an existing power grid intelligent monitoring system, monitoring workers are prevented from processing a large amount of monitoring data, problems caused by insufficient processing experience of the monitoring workers are avoided, the decision can be rapidly and accurately made on the single station end fault of the power grid, and accidents are prevented.
Description
technical field [0001] The invention relates to a method for fault diagnosis and auxiliary decision-making of a power grid at a single station end based on a power grid monitoring system. Background technique [0002] At present, all kinds of monitoring systems monitor the operation data of the power grid in real time when the power grid is running, and upload the monitoring data to the monitoring master station in real time. However, since the monitoring information connected to the main station is independent of each other, each monitoring information does not have the function of intelligent logical combination analysis. Once an accident occurs, the monitor needs to manually analyze the massive power grid operation and monitoring data, and constantly call different monitoring data. The screen and make judgments based on personal experience, which caused great difficulties for the monitors to judge the accident and dispose of the information. According to the "500kV Subst...
Claims
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IPC IPC(8): G06F17/30
CPCY04S10/50Y04S10/52
Inventor 谭文忠陈浩
Owner STATE GRID CORP OF CHINA