Energy-saving control method for reactive voltage automatic control system of wind power plant and photovoltaic power station

Abstract

The invention discloses an energy-saving control method for a reactive voltage automatic control system of a wind power plant and a photovoltaic power station. The method specifically comprises the following steps: firstly, carrying out data communication between a station and a dispatching AVC main station, then collecting the operation state and parameters, finally, processing the data in the station, and after the station receives a voltage target value issued by the dispatching AVC main station, through analysis and calculation, converting a voltage regulating variable into a reactive regulating variable, then calculating a reactive regulation target of each device in real time according to operation states and operation parameters of each unit and each device, and issuing the target value to each platform or device. According to the energy-saving control method for the reactive voltage automatic control system of the wind power plant and the photovoltaic power station, economical operation of the reactive voltage automatic control system is optimized, and meanwhile, the safe and stable operation of each device in the power plant is further ensured by performing more reasonable optimal distribution on each device with a reactive power output function in the station.

Description

technical field [0001] The invention specifically relates to an energy-saving control method for a reactive voltage automatic control system of a wind farm and a photovoltaic power station, and belongs to the technical field of reactive voltage automatic control systems. Background technique [0002] With the rapid development of economy and industrialization, traditional fossil energy is gradually exhausted, environmental damage is becoming more and more serious, and the demand for renewable energy is increasing. Wind power and photovoltaic power generation are increasingly attracting global attention; wind power and photovoltaic units are used in new energy. The proportion is constantly increasing, and their impact on the power system cannot be ignored; due to the randomness and intermittent characteristics of wind energy and solar energy, it is difficult to accurately predict the changing trend of new energy power generation output, resulting in difficulties and complicati...

AI Technical Summary

Problems solved by technology

[0005] Part of the AVC system adopts the voltage control mode in the process of controlling the reactive power compensation device, that is, the AVC system will forward the bus voltage target value issued by the master station to the reactive power compensation device, and the reactive power compensation device will control it by itself, so as to realize the voltage control mode. In this case, affected by various factors such as the accuracy of the PT / CT hardware equipment connected to the on-site reactive power compensation device, software control logic, response time of the generator and reactive power compensation device, etc., reactive power equipment will also appear The sign is opposite, the reactive power adjustment ability of the generator cannot be fully utilized, etc., which seriously affect the safety, stability and economy of the operation of the new energy station

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