Aid decision making method for out-of-limit of static security analysis device

Abstract

The invention discloses an aid decision making method for out-of-limit of a static security analysis device, which is characterized by comprising the following steps: carrying out tidal current calculation on a given base data section of a power grid, calculating the sensitivity of branch active power on node active power injection, and calculating cut-off distribution factors of branches quicklyin accordance with the sensitivity information; using contingency screening and rapid analysis of local factorization to calculate a security state of the power grid running under an expected accident and determining an out-of-limit device and tidal current out-of-limit quantity in each cut-off mode; calculating cut-off sensitivity of node injection power on the branch power under the expected accident; calculating the output adjusted quantity of a generator for eliminating the out-of-limit of the branch; and ordering in accordance with the sensitivity and the maximum release quantity respectively so as to form an aid decision making table for out-of-limit of a static security analysis device. The aid decision making method can be used to provide an aid decision making method on the static security analysis quickly.

Description

technical field [0001] The invention belongs to the technical field of power system analysis and calculation, and more precisely, the invention relates to a method for quickly assisting decision-making when static security analysis equipment exceeds a limit in network analysis. Background technique [0002] With the continuous and rapid growth of my country's electricity demand and the rapid development of the power industry, the scale of the power grid continues to expand, and the static security analysis of the power system is of great significance to ensure the safe operation of the power system. Extensive research on major power outages at home and abroad shows that they are all gradually evolved from the destruction of static safety constraints. A certain transmission component (line, transformer) in the power system fails and exits operation, causing a large-scale transfer of power and causing overloading of adjacent components. , forming a chain overload trip, leading...

AI Technical Summary

Problems solved by technology

Extensive research on large-scale blackouts at home and abroad shows that they are all gradually evolved from the destruction of static safety constraints. A certain transmission component (line, transformer) in the power system fails and exits operation, causing a large-scale transfer of power and causing overloading of adjacent components. , forming a chain overload trip, leading to large-scale power outages

[0003] At present, the network analysis application software of the energy management system basically has the function of static security analysis. Through the static security analysis, it can be determined whether the expected accidents such as line tripping in the current operation mode of the power grid will cause the equipment to exceed the limit, so as to discover the safety hazards of the power grid operation.

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