A Calculation Method of Dynamic Reactive Power Reserve in Power System

Abstract

The invention provides an electrical power system dynamic reactive storage computing method. The method comprises the steps that step1, on-line fault set transient stability simulation is conducted on a power grid through a parallel computing platform; step 2, dynamic reactive power analysis is conducted on the power grid; step 3, effective dynamic reactive power equipment is obtained; step 4, reactive power storage indexes of the effective dynamic reactive power equipment are obtained. Compared with the prior art, the electrical power system dynamic reactive storage computing method can carry out counting on the basis of single element dynamic reactive power storage indexes, achieves rapid evaluation of dynamic reactive power storage indexes of a local power grid or the whole power grid, and finds vulnerable links, and therefore the operation state of an electrical power system can be adjusted in an on-line mode.

Description

technical field [0001] The invention relates to a reactive power reserve calculation method, in particular to a power system dynamic reactive power reserve calculation method. Background technique [0002] Power system stability refers to the ability of the power system under given operating conditions to return to the operating equilibrium state after being disturbed; and most variables can be maintained within a certain range, so that the entire system can operate stably. Power system stability can be divided into three categories: power angle stability, voltage stability, and frequency stability; among them, power angle stability includes: static stability, transient stability, and dynamic stability; dynamic reactive power reserve, as an important indicator of power system dynamic stability, usually exists In equipment with dynamic voltage regulation capabilities such as generators, static var compensators (Static Var Compensators, SVCs) and static synchronous compensator...

AI Technical Summary

Problems solved by technology

[0003] At present, there is no clear definition and calculation formula for the reactive power reserve capacity of the power system. The main reason is that different dynamic reactive power supply points are located in different positions, and the reactive power generated by them has different effects on system voltage stability. Therefore, the system reactive power reserve The capacity is not a simple superposition of reactive power reserve capacity of these power points

At the same time, the stability simulation algorithm can only give the qualitative result of insufficient dynamic reactive power reserve, and cannot directly obtain the size of dynamic reactive power reserve from the simulation process

Images