Power distribution network information physical system reliability analysis method under power distribution automation condition

Abstract

The invention provides a power distribution network information physical system reliability analysis method under a power distribution automation condition. The method comprises the following steps: S1, inputting power distribution network physical system element parameters and a topological connection relationship, and inputting power distribution network information system element parameters anda node adjacency matrix; S2, extracting the states of a current physical system and an information system by using a sequential Monte Carlo method; S3, calculating the fault isolation time of a current fault; S4, analyzing the influence of the current fault on load points; S5, updating the simulation time, judging whether a simulation ending condition is met or not, if so, executing the step S6,and otherwise, executing the step S2; S6, counting reliability indexes of each load point; and S7, calculating a reliability index of the whole power distribution network information physical system.The method can evaluate the influence of the distribution automation condition on the reliability of the power distribution network information physical system more accurately and more meticulously,and is more suitable for reliability evaluation and planning of a stock power distribution network and an intelligent power distribution network.

Description

technical field [0001] The invention relates to the field of distribution network reliability analysis, in particular to a reliability analysis method of a distribution network cyber-physical system under the condition of distribution automation. Background technique [0002] The distribution network is a bridge connecting the transmission network and users. With the development of the national economy and the improvement of people's living standards, the requirements for the reliability of the power supply of the distribution network are also increasing, and the smart distribution network emerges as the times require. The realization of smart distribution network is inseparable from advanced intelligent equipment, communication technology, sensing technology, system analysis and computing technology, etc. Among them, distribution automation (DA) is an important technical support. The monitoring and control functions are inseparable from the timely and accurate transmission ...

AI Technical Summary

Problems solved by technology

The traditional distribution network reliability analysis method can no longer accurately evaluate the reliability of the distribution network under the condition that the physical system and the information system interact with each other, thus the reliability analysis method of the distribution network information physical system

[0007] The conventional reliability analysis method of distribution network cyber-physical system proposed in the existing literature is based on the assumption that all switches (outlet circuit breakers, section switches and tie switches) are equipped with three remote terminals (active distribution network considering the influence of information failure). Power System Reliability Modeling and Evaluation [J]. Power System Automation, 2019), so it is not suitable for the calculation of distribution network cyber-physical systems with multiple automation terminals

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