Understand photovoltaic panel is street lamp quotation system control model is what

Energy storage technology can achieve peak peel, load tracking, frequency modulation, voltage regulator power quality management, and other functions. Energy storage system can also be encountered in photovoltaic power station to abandon the light within the restricted when generating excess electricity energy storage battery, the power grid need or peak by store



energy storage technology can achieve peak peel, load tracking, frequency modulation, voltage regulator power quality management, and other functions. Energy storage system can also be in the photovoltaic power station 【 Photovoltaic power station, is a use of solar energy panels, the use of special materials such as silicon, composed of electronic components such as inverter power generation system, connected to the grid and sending electricity to the grid photovoltaic power generation systems. 】 Meet abandon the optical limiting power generation will be excess power into energy storage batteries, when grid need or peak by energy storage inverter 【 Inverter is the direct current (dc) can ( Batteries, battery) Converted into alternating current (ac) ( General is 220 v, 50 hz sine wave) 。 】 Inside the battery into electricity grid, using peak valley price difference to create greater economic benefits.

1, the energy storage battery charge and discharge in the system balance control

because most photovoltaic panel voltage of the dc - in 600 Around 800, to match the voltage, usually need to hundreds of storage battery in series to achieve. Early storage battery charging and discharging controller' This controller is intelligent to adjust the working voltage of solar panels, always work in V - making solar panels A characteristic curve of maximum power point. 】 Or simple battery management system ( Battery management system ( 电池管理系统) In pez DE invest a lot of energy and the development of electric vehicle battery management system (first BMS) , is the link between the battery with the user, the main object is the secondary battery. 】 ( 百时美施贵宝【 Battery management system ( 电池管理系统) Battery management system ( BMS) Is the link between the battery with the user, the main object is the secondary battery, is mainly in order to improve the utilization rate of the battery, prevent the battery overcharge and over discharge, can be used for electric vehicles, storage battery, robots, unmanned aerial vehicles (uavs), etc. 】 ) , can't completely monitoring and management of each battery charge and discharge performance and working condition, a large number of battery series parallel, in their individual differences is inevitable in the process of charging and discharging, can lead to serious battery charging and the problem of uneven output power, eventually lead to system failure. Usually used in large storage battery energy storage power generation system intelligent battery energy management system ( EMS) To achieve control inside the battery charge and discharge energy balance control and so on, to ensure that each battery is stable and reliable work.

the central control system can use local control, general interval layer control and remote control mode. Central control system will receive the control command from the monitoring system for battery charge and discharge, according to the storage battery charging and discharging management system to provide the data dynamic adjustment parameters, the corresponding action, the closed-loop control system for the charging and discharging voltage and current 【 The closed-loop control is to point to a basic concept of cybernetics. 】 To meet the battery in the various performance indicators in all stages of charging and discharging; Processing various alarm information of battery management system, to ensure the safety of the battery.

battery management system also have on-line monitoring is required for each section of the battery voltage, temperature; Periodic testing battery internal resistance on-line automatic 【 Battery internal resistance is refers to the battery on the job, current flows through the battery internal resistance, generally divided into ac resistance and dc resistance, because the rechargeable battery internal resistance is very small, when measuring the dc resistance due to the capacity of electrode polarization, polarization resistance, its real value, so it can not be measured and the ac impedance measurement can be exempted from the influence of polarization resistance, it is concluded that the real value. 】