Reliability Analysis Method and System for Relay Protection System
A technology of relay protection and analysis method, which is applied in the field of power grid, can solve problems affecting normal and safe operation, and achieve good safety and reliability effects
Active Publication Date: 2017-03-22
POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD +1
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[0005] Based on this, it is necessary to address the problem that the existing reliability analysis methods of relay protection systems are difficult to accurately and effectively reflect the reliability of relay protection systems over time, which affects the normal and safe operation of the power grid system, and provide a method that can Reliability analysis methods and systems for relay protection systems that accurately and effectively reflect the reliability of relay protection systems over time, ensuring the normal and safe operation of power grid systems
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[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below according to the drawings and embodiments. It should be understood that the specific implementations described here are only used to explain the present invention, not to limit the present invention.
[0023] Most of the previous reliability evaluation models reflect the long-term average reliability level of relay protection devices, and it is difficult to effectively reflect the changes in reliability of relay protection systems over time. The rank sum ratio comprehensive evaluation method can effectively consider the indicators of hardware, software, and personnel, and finally obtain the trend of the reliability of the relay protection system over a period of time, which can more intuitively grasp the protection system in operation. The overall status of each stage. Other reliability analysis methods, such a...
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The invention provides a relay protection system reliability analysis method and system. The relay protection system reliability analysis method comprises the steps of determining reference objects and reference indexes corresponding to the reference objects in a relay protection system, adopting a Delphi method to calculate weight values of all reference indexes in the relay protection system, respectively obtaining data of the reference indexes in the relay protection system within preset time, adopting a rank sum comprehensive analysis method to comprehensively analyze the data of the reference indexes and the weight values of the reference indexes, obtaining reliability change tendency of the relay protection system within preset time. In the whole process, the rank sum comprehensive analysis method is adopted to conduct analysis on the reliability of the relay protection system, the rank sum comprehensive analysis method can effectively and comprehensively consider hardware, software and persons to obtain the change tendency with time of the reliability of the relay protection system within a time period, accordingly the safety and reliability of the relay protection system are well mastered, and normal and safety operation of an electric power and power grid system is ensured.
Description
technical field [0001] The invention relates to the technical field of power grids, in particular to a reliability analysis method and system for a relay protection system. Background technique [0002] In terms of protection reliability evaluation modeling and index solution, the ideas adopted at the system level and the device level are similar, mainly including analytical methods and simulation methods. [0003] The analytical method mainly establishes a reliability probability model based on the structure of the system, the functions of the system and components, and the logical relationship between the two, and accurately solves the model through recursive or iterative processes to calculate the reliability index of the system. The advantage is that it has a clear physical concept and a high-precision mathematical model. The disadvantage is that the calculation amount will also increase as the system scale increases. The simulation method is to select and estimate the...
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IPC IPC(8): G06Q50/06
CPCG06Q50/06
Inventor 曾耿晖黄明辉陈志光焦邵麟张智锐李一泉王峰周淑雄徐延明张志东
Owner POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD