Distributed power grid risk assessment system and distributed power grid risk assessment method based on fault feature of electric circuit

Abstract

The invention discloses a distributed power grid risk assessment system and a distributed power grid risk assessment method based on a fault feature of an electric circuit. The distributed power grid risk assessment system comprises at least three information collecting and processing units and a power grid risk assessment backstage computer. The information collecting and processing units comprise pressure sensors, position sensors, liquid level sensors, temperature sensors, information collecting sub-units, merging sub-units and information pre-processing and transmitting sub-stations. The output ends of the all the sensors are connected with the corresponding input ends of the information collecting sub-units through optical cables respectively. The output ends of the information collecting sub-units and the merging sub-units are connected with the input ends of the information pre-processing and transmitting sub-stations through optical cables respectively. The information pre-processing and transmitting sub-stations are connected with the power grid risk assessment backstage computer in a double-direction mode through an optical fiber network. The distributed power grid risk assessment system and the distributed power grid risk assessment method based on the fault feature of the electric circuit have the advantage of being capable of carrying out fault feature analysis on electric devices of the distributed power grid and ensuring safe and stable operation of power grid devices.

Description

technical field [0001] The invention relates to a distributed power grid risk assessment system and a distributed power grid risk assessment method based on electrical circuit fault characteristics, belonging to the field of risk assessment. Background technique [0002] The continuous expansion of power grid scale and the continuous complexity of system components are the main characteristics of the current power grid development. In recent years, accidents caused by failure of important power transmission and transformation equipment have occurred frequently, which not only caused huge economic losses, but also affected social order. As an important part of the power system, the electrical circuit is composed of many power transmission and transformation equipment, and different types of electrical equipment failures have different effects on the failure rate of the electrical circuit unit. Once a failure occurs, it will seriously affect the power. It is also extremely de...

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Problems solved by technology

[0004] The assessment of power system operation security risk mainly proposes some static security and transient security indicators, which can quantitatively assess the direct risk of power grid operation, but the existing security assessment indicators fail to combine the current faults of equipment or circuits with the potential chains in the system. The combination of faults is considered comprehensively, so the risk assessment indicators are not comprehensive and reasonable

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