Decision-making modeling method for relay protection on-line condition based maintenance of power system

Abstract

The invention discloses a decision-making modeling method for relay protection on-line condition based maintenance of a power system, and belongs to the invention in the aspect of a platform independent information model (PIM). The decision-making modeling method is mainly applied to relay protection condition evaluation and an auxiliary decision making process. According to the decision-making modeling method, an acquisition and storage process, a condition evaluation process and the auxiliary decision making process in the relay protection on-line condition based maintenance are modeled, so that the decision-making modeling method adapts to the characteristics closely related to on-line condition quantity and equipment, and the complexity brought by difference of the equipment is shielded for an upper evaluation algorithm to support a universal evaluation algorithm; and according to the decision-making modeling method, a research process of the auxiliary decision making algorithm and an implementation process of a maintenance decision making system can also be separated to meet the characteristic of supporting the dynamic updating of the decision making algorithm.

Description

technical field [0001] The invention belongs to the field of platform-independent information model (PIM), and it is mainly applied in the process of relay protection state evaluation and auxiliary decision-making. Background technique [0002] With the development of the scale of the power grid, the number of equipment continues to increase, and the technical level and reliability are rapidly improved. The traditional equipment regular maintenance mode has been difficult to adapt to the new management requirements. The State Grid is in the process of gradually transforming from the scheduled maintenance mode (TBM) to the condition-based maintenance mode (CBM). At present, the State Grid Corporation has started from primary equipment such as oil-immersed transformers, SF6 circuit breakers and overhead lines, and carried out maintenance work in accordance with the requirements of the equipment condition maintenance guidelines. The relay protection system also needs to realiz...

AI Technical Summary

Problems solved by technology

As a result, the offline condition-based maintenance system generally does not consider the relatively complex general modeling design when designing, but directly performs system modeling based on the condition-based maintenance guidelines of the power grid company, and only partially supports the configuration and maintenance of some condition evaluation calculation formulas , where the state quantity data is directly stored in the form of a database table, and the evaluation algorithm and maintenance strategy algorithm are directly solidified in the program

The disadvantages of this architecture are: the definition of the state quantity of the system is fixed in the program, does not support dynamic modeling, and lacks an organic connection with the power grid equipment model; the algorithm is rigid, and different algorithms cannot be configured for different equipment

It can be seen that the structural defect of the current offline relay protection condition-based maintenance system mainly lies in the lack of a global information system model (PIM) that has nothing to do with the implementation platform

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