Hydropower station reactor configuration method and system

Abstract

The invention relates to a configuration method and system for an electric reactor of a hydropower station. The configuration method comprises the steps of obtaining input parameters in the configuration method for the electric reactor of the hydropower station; calculating input impedance of a grid-connected point of the hydropower station according to the input parameters in the configuration method; calculating unit leading-in-phase voltage regulation cost of the hydropower station when the electric reactor is not installed according to the input parameters in the configuration method and the input impedance of the grid-connected point of the hydropower station; establishing a mathematic optimization model configured to the electric reactor of the hydropower station according to the input parameters in the configuration method and the input impedance of the grid-connected point of the hydropower station; solving the mathematic optimization model to obtain an optimized target function value and a capacity optimal solution of the electric reactor; and determining whether the unit leading-in-phase voltage regulation cost is greater than or equal to the optimized target function value or not, if so, outputting prompting information of the electric reactor with the capacity optimal solution as the installed capacity. Basis is provided for the reasonable configuration of the electric reactor of the hydropower station, thereby improving the reactive power regulation capability of the hydropower station, and realizing safe and economic operation of the power grid.

Description

technical field [0001] The invention relates to the field of power grids, in particular to a reactor configuration method and system for a hydropower station. Background technique [0002] In recent years, under the background of vigorously developing small hydropower, more and more hydropower stations have been connected to the distribution network. While making full use of water resources, it has also brought about the problem of voltage and reactive power in the distribution network. [0003] The traditional methods to improve the voltage quality level of the hydropower station's access to the distribution line mainly include tapping the phase-advancing capability of small hydropower units and configuring shunt reactors. However, the phase-advancing operation of small hydropower units, on the one hand, will reduce the output of generator active power, and on the other hand, it will affect the stability of unit operation, which is an uneconomical operation mode; and the co...

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Problems solved by technology

However, the phase-advancing operation of small hydropower units, on the one hand, will reduce the output of generator active power, and on the other hand, it will affect the stability of unit operation, which is an uneconomical operation mode; and the configuration of reactors in current hydropower stations is usually based on experience. Judgment, lack of guiding principles, unable to adapt to the needs of optimal configuration of reactors in hydropower stations under different operating conditions, which may easily lead to insufficient or excess configuration of reactors, and the installation of reactors is usually carried out at the same time as the construction of hydropower stations, and usually cannot be changed during operation. Therefore, If the reactor configuration is insufficient, it will affect the reactive power and voltage regulation ability; if the configuration is excessive, it will increase unnecessary economic investment and operation and maintenance costs, and affect the income

The traditional method of improving the voltage quality level of the hydropower station's access to the distribution line cannot reasonably configure the reactor of the hydropower station

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