Joint coordination method for master-station automatic voltage control and plant-station voltage reactive power control

Abstract

The invention discloses a joint coordination method for automatic voltage control (AVC) of master stations and voltage reactive power control (VQC) of plant stations, which relates to the technical field of power dispatching automation systems. The method aims to solve the problems of simultaneously deploying AVC and plant-station VQC in the same area and using a decision tree method with data mining to solve the technical problems of joint coordination equipment between the two. The method has the following implementation processes: 1) preparing data and establishing a data-mining knowledge base; 2) establishing node attributes; 3) testing samples; 4) adjusting the node attributes; 5) verifying the samples; and 6) generating a coordination strategy. The data mining method based on decision trees has the characteristics of high intuitionistic property, easy operation and capability of flexibly expanding the node attributes. The method can extract results to be predicted from a great amount of relevant information, which provides bases for power dispatching automatic control decision.

Description

technical field [0001] The present invention relates to automatic control technology, in particular to a joint coordination realization technology for the automatic voltage control (AVC) of the master station of the power dispatching automation system and the voltage and reactive power control system (VQC) at the station end. Background technique [0002] Voltage is one of the main indicators of power quality. Voltage quality has a direct impact on the stability of the power grid, the safe operation of power equipment, the safe production of industry and agriculture, and the electricity consumption of people's lives. If the voltage is too high, too low or deviates from a certain range, it will affect the service life and utilization efficiency of electrical equipment and cause economic losses. [0003] At present, some substations in China have installed the voltage and reactive power control system VQC (VoltagueReactive Control) at the station end. VQC is simple to impleme...

AI Technical Summary

Problems solved by technology

Therefore, in the current system, the automatic adjustment functions of AVC and VQC on voltage are mutually exclusive and contradictory. When AVC is put into operation, the solution is to shut down VQC, resulting in a huge waste of investment.

Or when the VQC is put into operation, the AVC of the master station is only required to monitor, but the full function of the AVC of the master station is not brought into play

[0007] At present, there is no way to combine the two to work together on the power grid, make full use of the existing automatic control resources, and greatly improve the power quality of the power grid

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