A method for automatic voltage control of photovoltaic power generation

Abstract

An automatic voltage control method for photovoltaic power generation, the voltage control modeling of 110kV and 35kV photovoltaic power stations, and then the two-way interaction between the AVC master station and the AVC sub-station of the photovoltaic power station, calculates the global reactive power optimization of the photovoltaic power station, and realizes the agility of the photovoltaic power generation collection area Automatic voltage control, in the AVC system of the dispatching center, the three-level voltage control gives the optimal control target of the reactive power voltage of the whole network after considering the safe operation of the voltage in the photovoltaic power generation area, which is used as the control target of the central busbar in the photovoltaic collection area; The secondary voltage control in the power generation area is used to control the reactive power of each photovoltaic power station in the area to achieve the voltage control goal of the central busbar in the photovoltaic collection area. The invention adapts to the automatic voltage control system of large-scale photovoltaic power generation and grid connection, and performs automatic closed-loop control on the voltage of the photovoltaic power station and the connected grid area. The system can be connected to 100 photovoltaic power plants with closed-loop control.

Description

technical field [0001] The invention relates to a voltage control method, in particular to an automatic voltage control method for photovoltaic power generation. Background technique [0002] The AVC function is an important part of the smart grid dispatching technical support system (hereinafter referred to as the D5000 system). For the convenience of user use and maintenance, the AVC application is required to be a sub-application module of the D5000 system to realize embedded integration. The D5000 platform manages AVC-related applications and processes through the system manager, and provides platform support for "AVC applications", including real-time libraries and related screens. The main body of "AVC application module" is composed of AVC application process and AVC closed-loop control process, and accepts the management of D5000 system manager. The AVC closed-loop control process calls relevant sub-processes to complete the closed-loop control function according to...

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