Exploitative wind-solar generation control system and method

Abstract

The invention discloses an exploitative wind-solar generation control system and method. The control method comprises the following steps: the control system of the invention controls the output current IS of the wind-solar generation system to adjust the output current IAC of the city power supply system; in order to maintain current balance (IS+IAC=IB+IL) by the control system, under a certain load current IL and battery current IB, when the output current IS of the wind-solar generation system is increased, the output current IAC of the power supply system is decreased correspondingly; andwhen the output current IS is decreased, the output current IAC is increased correspondingly. The wind-solar generation control system of the invention can track the city power supply system instantly, thus increasing the utilization rate of the green energy; the risk that the storage battery is overcharged under light load can be avoided; when the wind-solar generation system is out of order, the system can be automatically separated from the system, not affecting the operation of the city power supply system; and the original city power system does not need to make any change and have any additional device.

Description

technical field [0001] The invention belongs to the technical field of power supply, and relates to a control system and a control method for utilizing wind and solar power generation. Background technique [0002] The traditional wind power generation system is a guaranteed power supply system. In order to ensure the reliability of power supply, it is necessary to consider not only the new energy supply for the load and the battery charging, but also the battery has enough backup time. In this way, the system needs to be equipped with a large-capacity photovoltaic battery. Arrays, fans, and storage batteries, thus increasing the cost of the system. In order to balance the reliability of power supply and the economy as much as possible, the guaranteed power supply can be changed to the utilization power supply. In the utilization type power supply system, the wind power generation system does not assume the obligation of the main power supply, and does not need to meet all ...

AI Technical Summary

Problems solved by technology

[0006] (1) When the output voltage of the wind power generation system is lower than the output voltage of the mains power supply system, the wind power generation system cannot output energy and has no energy-saving effect

[0007] (2) When the output voltage of the wind power generation system is higher than the output voltage of the mains power supply system and the power generation energy is greater than the load energy consumption, it will cause the battery to be overcharged and affect the system performance

[0012] (3) It takes a certain amount of time to obtain parameters from the mains power supply system, so the tracking speed is slow

[0013] (4) Due to the modification of the communication circuit of the mains power supply system, it may cause communication failure between the mains power supply system and the monitoring center

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