Intelligent integrated control device for flexible power grid access of distributed solar power stations

Abstract

The invention discloses an intelligent integrated control device for flexible power grid access of distributed solar power stations. The intelligent integrated control device comprises a DSP (Digital Signal Processing) central control module, an analog data acquisition module, a digital input module, a digital control module, a switch output module, a man-machine interface, an LCD / LED (Liquid Crystal Display-Light Emitting Diode) display, a power grid, photovoltaic power plant and load condition module, a power grid generation requirement module, a power grid dispatching and monitoring module and an anti-interference shell. The device has the advantages that the access and removal are flexible, and the operation on electrical equipment is smooth and stable, so that sparks and abrasion caused by hard operation are avoided, and the service life of the equipment is prolonged; furthermore, due to the intelligent functions of the device, many manual operating processes can be replaced, the misoperation caused by manual operation can be avoided, and the existing integrated automatic control systems can be replaced partially or totally, so that the device can become an important component part of a smart power grid.

Description

technical field [0001] The invention belongs to the technical field of solar photovoltaic power generation and smart grid, and in particular relates to a comprehensive control device for intelligent distributed solar power station flexible access to the grid. Background technique [0002] Grid connection of solar power stations is a field that has only emerged in recent years. Because it is an emerging industry, it is mostly distributed power stations with small capacity, and its connection method is relatively simple. Generally, traditional automation devices such as relay protection devices can Competent, but with the development of the entire industry, the capacity gradually expands, and the solar power station also tends to develop towards a centralized system. The existing relay protection device will not be fully competent, because the relay protection technology is based on the single-chip microcomputer platform, which is simple to implement. This technology is effect...

AI Technical Summary

Problems solved by technology

As we all know, relay protection technology is based on the principle of logic switch action, and its control mode is discrete, that is, "hard" access. The advantages of discrete control are simple and intuitive, but the disadvantage is poor flexibility. Frequent switching actions cause poor reliability of equipment. , the overall efficiency of photovoltaic inverters in solar power plants is also low

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