Hybrid energy storage smooth wind power control system with variable filter coefficients
A filter coefficient and energy storage system technology, which is applied in wind power generation, energy storage, and greenhouse gas reduction, can solve the problems of reducing the utilization rate of energy storage equipment, disadvantages, and prolonging the life of energy storage equipment, so as to reduce the discharge depth and utilize The effect of improving the efficiency and prolonging the service life
Inactive Publication Date: 2015-04-15
南通河海大学海洋与近海工程研究院 +1
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is: in the prior art, when smoothing the output power of the wind power generation system, the traditional fixed coefficient filter is not conducive to prolonging the service life of the energy storage equipment and reducing the utilization rate of the energy storage equipment. The present invention provides a hybrid energy storage smooth wind power control system with variable filter coefficient
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[0029] The technical scheme of the present invention will be further described below in conjunction with the accompanying drawings.
[0030] System structure block diagram of the present invention, as figure 1 As shown, it includes a signal measurement acquisition unit, a signal transmission unit, a variable coefficient filter, a power divider, a battery energy storage system, and a supercapacitor energy storage system. The signal measurement acquisition unit collects the output signal of the wind power generation system through the signal The transmission unit transmits to the variable coefficient filter, and the variable coefficient filter performs mathematical operations on the received signal, outputs the smoothed power, and sends it to the battery energy storage system and the super capacitor energy storage system respectively through the power divider, and passes through the battery energy storage system. system and supercapacitor energy storage system are respectively f...
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The invention discloses a hybrid energy storage smooth wind power control system with variable filter coefficients. The control system comprises a signal measuring and acquiring unit, a signal transmission unit, a variable-coefficient filter, a power divider, a super-capacitor energy storage system and a storage battery energy storage system. distribution of compensation power in energy storage units is optimized by changing filter coefficients of a filter, fluctuating wind power is processed by the variable-coefficient filter and the power divider to obtain a power value required to be compensated by the storage battery energy storage system and the super-capacitor energy storage system, and the energy storage systems adopt a PQ control output to compensate the power and feed the power back to a power grid so as to achieve the purpose of smoothing fluctuating power. The hybrid energy storage smooth wind power control system meets the requirement for smooth wind power output, reduces discharging depth of storage batteries, prolongs the service life of the storage batteries and enables the utilization rate of super-capacitor energy storage devices to be improved.
Description
technical field [0001] The invention relates to a hybrid energy storage and smooth wind power control system with variable filter coefficient, which belongs to the field of improving the power quality of wind farms. Background technique [0002] Since the power system is very sensitive to power fluctuations between 0.01Hz and 1Hz, while most of the fluctuating power output by the wind power generation system is between 0.01Hz and 1Hz, smoothing the power fluctuating in this frequency band is beneficial to the power grid. Safety matters. [0003] Energy storage components are often used to smooth power fluctuations. Commonly used energy storage components include batteries, supercapacitors, and superconducting energy storage. Among them, battery energy storage technology is mature and low in cost, but it is limited by the number of charge and discharge and life span. The main factors affecting battery life are not only related to the number of charge and discharge of the ba...
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IPC IPC(8): H02J3/32
CPCY02E70/30Y02E10/766Y02E10/76
Inventor 潘文霞吴雨周玮冯博王兵张阳柯联锦张文豪
Owner 南通河海大学海洋与近海工程研究院