A catenary power quality and energy utilization efficiency optimization method
A power quality and efficiency optimization technology, applied in the direction of power lines, multi-phase network asymmetry reduction, multi-phase network elimination/reduction of asymmetry, etc., can solve problems that do not meet energy conservation and environmental protection, affect energy utilization, and affect power quality. And other issues
Active Publication Date: 2022-04-01
江苏新绿能科技有限公司
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[0002] With the vigorous development of the railway industry, electric traction power supply has nearly become the most important power supply method for railways. Electric traction adopts a single-phase AC power frequency power supply system, and the local power supply network is stepped down to supply power to vehicles. Therefore, the three-phase unbalance of the power grid will be caused, which will cause certain safety hazards to the safe operation of the power grid.
Moreover, a large amount of braking energy will be generated when the vehicle brakes. If the braking energy is directly fed back to the grid, it may increase the three-phase unbalance of the grid, and a large number of harmonics will affect the power quality. At present, when the vehicle brakes Most of the braking energy is consumed by equipment such as braking resistors, which seriously affects the utilization rate of energy, and does not meet the current requirements for energy conservation and environmental protection. Therefore, the research on regenerative braking energy recovery has become a research hotspot in the field of rail transit. Energy recovery rate The improvement will make the vehicle have better driving economy, and will reduce the three-phase unbalance on the grid side, and will have better security for the operation of the grid side
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[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0057] A method for optimizing catenary power quality and energy utilization efficiency. The catenary adopts an AC-DC-AC railway power regulator (RPC) with a back-to-back structure at the commutation point to connect different power supply arms. The traction or braking power in the phase commutation arm uses a collaborative optimization algorithm to calculate the power to be provided or absorbed by the RPC at each commutation node. When the vehicle is tractioni...
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The invention discloses a catenary power quality and energy utilization efficiency optimization method. In the catenary, an AC-DC-AC device (RPC) with a back-to-back structure is used to connect different power supply arms. When a vehicle is towed or braked, the RPC provides electric energy or recovers it. Braking energy, in the present invention, according to the collection of traction or braking power in each commutation arm in the same catenary, a collaborative optimization algorithm is used to calculate the power to be provided or absorbed by the RPC at each commutation node, and to suppress the three-phase unbalance of the catenary , and improve energy utilization.
Description
technical field [0001] The invention relates to the field of high-speed railway catenary, in particular to a catenary power quality and efficiency utilization method. Background technique [0002] With the vigorous development of the railway industry, electric traction power supply has nearly become the most important power supply method for railways. Electric traction adopts a single-phase AC power frequency power supply system, and the local power supply network is stepped down to supply power to vehicles. Therefore, the three-phase unbalance of the power grid will be caused, which will cause certain hidden dangers to the safe operation of the power grid. Moreover, a large amount of braking energy will be generated when the vehicle brakes. If the braking energy is directly fed back to the grid, it may increase the three-phase unbalance of the grid, and a large number of harmonics will affect the power quality. At present, when the vehicle brakes Most of the braking energy...
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IPC IPC(8): B60M3/00B60M3/06H02J3/26
CPCB60M3/00B60M3/06H02J3/26Y02E40/50
Inventor 曾晓红李奇高仕斌陈维荣谢生波赵志刚
Owner 江苏新绿能科技有限公司