A logic protection and voltage stabilization smart grid frequency conversion energy saving control system
An energy-saving control system and logic protection technology, applied in the direction of energy-saving control technology, electric light source, electric lamp circuit layout, etc., can solve the problems of ineffective energy saving and achieve the effect of ensuring safety, ensuring stability, and simple overall structure
Inactive Publication Date: 2017-03-08
广州禺华电气设备有限公司
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[0005] The purpose of the present invention is to overcome the defect that the frequency conversion energy saving street lamp controller in the current smart grid frequency conversion energy saving system cannot effectively realize energy saving, and to provide a logic protection and voltage stabilization smart grid frequency conversion energy saving control system
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[0023] Such as figure 1 As shown, the present invention mainly includes an EMI filter 1, a bridge rectifier 2, a step-up active power factor correction circuit 3, a DC / AC high-frequency converter 4, a triode parallel compensation circuit 5, a sampling protection circuit 6, There are nine major parts of single-chip microcomputer 7, pulse generation driving circuit 8 and logic protection voltage stabilizing circuit 9.
[0024] Among them, the sampling protection circuit 6 is used to transmit the sampling results of the voltage at both ends of the energy-saving street lamp and the current passing through the energy-saving street lamp to the single-chip microcomputer 7, and the single-chip microcomputer 7 controls the pulse generation driving circuit 8 to send a lighting driving waveform or a normal working driving waveform to DC / AC High-frequency converter 4, the DC / AC high-frequency converter 4 converts the 400V direct current boosted by the step-up active power factor correctio...
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The invention discloses a logic protection voltage-stabilization type frequency conversion and energy saving control system for a smart grid. The control system mainly comprises an EMI (electromagnetic interference) filter (1), a bridge rectifier (2) connected with the EMI filter (1), a boost type active power factor correcting circuit (3) connected with the bridge rectifier (2) and the like. The system is characterized in that a triode parallel compensating circuit (5) is also connected between a sampling protection circuit (6) and the boost type active power factor correcting circuit (3) in series. The control system is simpler in whole structure and higher in stability and reliability, a traditional compensating capacitor is replaced by the triode parallel compensating circuit, the size of the control system can be greatly reduced, and the power factor of the whole control system can be increased to a large extent, so that the system is stable.
Description
technical field [0001] The invention relates to the field of power grid energy saving, in particular to a logic protection voltage stabilizing intelligent power grid frequency conversion energy saving control system. Background technique [0002] At present, with the development of urbanization and the improvement of people's living standards, the power consumption of urban lighting has increased geometrically. In response to the call of the national energy conservation and emission reduction policy, the concept of smart grid has been increasingly recognized by everyone. The smart grid is the intelligence of the power grid, also known as "grid 2.0", which is a technical application based on an integrated, high-speed two-way communication network, which can realize the reliability, safety, economy, efficiency, environmental friendliness and use of the power grid. safe target. [0003] Frequency conversion energy-saving street lamp is an important unit of smart grid, and the ...
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IPC IPC(8): H05B37/02
CPCY02B20/40
Inventor 关志敏
Owner 广州禺华电气设备有限公司