Smart grid realization method of on-line voltage-stability safety estimation system

Abstract

The invention relates to a smart grid realization method of an on-line voltage-stability safety estimation system, which comprises the following steps: 1, calculation grids are constructed in a network environment according to a calculation requirement; 2, a coordinating manager engine acquires real-time state estimation section data from an SCADA / EMS system; 3, a calculation manager engine performs power flow convergence check on the real-time state estimation section data to form a calculation task pool; 4, calculation node engines apply for calculation; 5, the calculation manager engine generates mixed voltage stability index information with the influences of active load and reactive load taken into consideration comprehensively according to calculation results sent by each calculation node and identifies weak nodes of a power grid by sorting; and 6, the information of the identified weak nodes of the power grid are written into a database and are refreshed periodically to display a voltage-stability safety estimation result in graph. The method can exert the calculation capability of each calculation node to the maximum, can effectively implement the dynamic load balance, and has high dynamic scalability and fault tolerance.

Description

technical field The invention relates to a safety and stability evaluation method applied in power system operation and safety monitoring systems, and belongs to the technical field of computer technology applied to power dispatching automation. Background technique In recent years, with the continuous growth of load demand, the power system is gradually entering the era of long-distance, large-capacity, ultra-high voltage transmission, which can optimize resource allocation, improve power generation efficiency, and enhance power supply reliability. However, the structure of the power system is becoming more and more complex, and the complexity of scheduling increases accordingly, and the stability of the system becomes more prominent. In particular, the system reforms of breaking monopoly, deregulation, introducing competition, and establishing a power market in the power industry force power companies to make full use of existing equipment to pursue an economical managemen...

AI Technical Summary

Problems solved by technology

(1) When selectively using a specific voltage stability index to identify weak links in the power grid, it is analyzed from different angles of the influence of load on the voltage of the power grid, so there are certain limitations, and the results obtained are different also very big;

(2) Using the PC cluster distributed computing model based on isomorphism, when it is difficult to determine the execution time of the subtasks in the distributed tasks in advance, the computing resources will not be fully utilized if the multi-machine sharing task allocation strategy is adopted The problem;

Computers with strong performance are bound to be underutilized, wasting the computing resources that could have been used

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