Reliability evaluation method for interconnected power generation system

Abstract

The invention discloses a reliability evaluation method for an interconnected power generation system and relates to the technical field of a reliability analysis method for the interconnected power generation system. According to the method, on the basis of a quasi-Monte Carlo method, a sequence is not randomly generated, the sequence is a determined sequence generated according to a certain rule, and the method is fast in convergence speed, easy in algorithm realization, low in memory demand and short in simulation time. Moreover, according to the method, features of the interconnected power generation system are also taken into full consideration; when a plurality of regions are interconnected, whether a fault occurs in the whole system or not is judged; and if every possible condition is taken into consideration, the process is too complicated, which is not beneficial for comprehensive consideration. According to the method, a linear planning model is established, and through the model, the reliability evaluation can be carried out on a multi-region system comprehensively and conveniently.

Description

technical field [0001] The invention relates to the technical field of interconnected power generation systems. Background technique [0002] With the rapid development of the electricity market, the power system is constantly adding large-capacity generator sets and UHV long-distance transmission lines. The modern power grid has become a highly complex dynamic system, and it is difficult to accurately evaluate the reliability of this system. Therefore, the power system can be divided into subsystems such as power generation system, power transmission system, power transformation system and power distribution system, and then their reliability can be evaluated separately. Among them, the reliability assessment and analysis of the interconnected power generation system is a very important part. [0003] Interconnected power system, as the name implies, refers to a system that uses transmission lines with a certain transmission capacity to connect two or more power systems t...

AI Technical Summary

Problems solved by technology

The simulation method, also known as the Monte Carlo simulation method, is mainly divided into sequential and non-sequential. The sequential simulation method is to simulate in a certain time span according to the time sequence, and needs to sample and analyze components and The state of the system, so more memory space and longer simulation time are required, and the simulation process is more complicated

In addition, the simulation method requires a large number of deterministic power flow calculations, and it takes a long time to obtain accurate reliability assessment results.

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