A wind-solar hybrid control system for street lamps and its working method

Abstract

The invention discloses a wind and light complementation control system for a street lamp and a working method of the wind and light complementation control system. The system comprises a wind turbine, a generator, an uncontrollable rectifier bridge circuit, a first DC / DC (Direct Current) converter and a load which are connected in sequence by a bus, wherein a first surge lightning protection circuit and an unloading protection circuit are arranged between the generator and the uncontrollable rectifier bridge circuit; an impact current limit circuit is arranged between the uncontrollable rectifier bridge circuit and the first DC / DC converter; a composite energy storing circuit is connected to the bus between the first DC / DC converter and the load; photovoltaic panels are connected between the first DC / DC converter and the load through a second DC / DC converter; a second surge lightning protection circuit is arranged between the second DC / DC converter and the photovoltaic panels; the unloading protection circuit, the composite energy storing circuit, the load, the first DC / DC converter and the second DC / DC converter are controlled by a DSP (Digital Signal Processor) controller which also controls an illuminance monitoring circuit. The system has the advantages of surge lightning protection, impact current suppression, energy optimized dispatching, output power intelligent adjustment and the like.

Description

technical field [0001] The invention relates to a wind-solar complementary control system for street lamps and a working method thereof. Background technique [0002] The laying distance of road lighting is long, and some road sections are far away from substations and distribution stations. Using traditional street lighting is not only difficult in construction, but also difficult in maintenance when a fault occurs. The off-grid independent street lighting with wind and solar complementary power supply can better overcome the above problems, and has no pollution to the environment. In addition, considering the long-term operating cost, wind-solar complementary street lighting is more economical. [0003] At this stage, wind-solar hybrid street lighting still needs to be perfected and improved: the intermittent and unpredictability of renewable energy makes the initial design capacity of the system, especially the battery capacity, larger, and the initial investment is high...

AI Technical Summary

Problems solved by technology

[0007] 2. Renewable energy has volatility and randomness. How to further stabilize the power flow of the system, improve the power quality of users and prolong the service life of the unit needs to be solved urgently

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