A railway traction power supply system based on photovoltaic power generation
A traction power supply system, photovoltaic power generation technology, applied in photovoltaic power generation, power supply lines, conversion equipment that can be converted to DC without intermediate conversion, etc., can solve the adverse effects of traction power supply system protection, limited battery charging and discharging power, and cycle life Shortage and other problems, to achieve the effect of reducing negative sequence impact, low cost, and low equipment investment
Active Publication Date: 2018-07-17
SOUTHWEST JIAOTONG UNIV +1
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Problems solved by technology
At present, such existing power supply schemes require a large number of inverters and transformers. At the same time, the direct connection of photovoltaic power generation to the catenary may have an adverse effect on the protection of the traction power supply system; In this type of system, batteries are often used to realize the power storage function, but the battery has the problems of limited charge and discharge power and short cycle life. Facing the characteristics of high power and intermittent railway traction load, the economy is not good. high
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[0038] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further elaborated below in conjunction with the accompanying drawings.
[0039] In this example, see figure 1 As shown, the present invention proposes a railway traction power supply system based on photovoltaic power generation, including a photovoltaic power generation device 12, a photovoltaic inverter 13, a step-up transformer 14, a traction transformer and a traction power supply system 17;
[0040]The power output end of the photovoltaic power generation device 12 is connected to the primary side port of the step-up transformer 14 through the photovoltaic inverter 13, and the secondary side port of the step-up transformer 14 is connected to the traction power supply system 17, and the traction power supply system 17 Also connected to the traction transformer connected to the grid transmission line 20;
[0041] Wherein, the step-up trans...
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The present invention discloses a photovoltaic power generation-based railway traction power supply system. The photovoltaic power generation-based railway traction power supply system comprises a photovoltaic power generation device, a photovoltaic inverter, a step-up transformer, a traction transformer and a traction power supply system; the electric energy output end of the photovoltaic power generation device is connected with the primary side port of the step-up transformer through the photovoltaic inverter; the secondary side port of the step-up transformer is connected with the traction power supply system; the traction power supply system is connected with the traction transformer connected to a power grid transmission line; and a V / V wiring type step-up transformer is adopted as the step-up transformer. According to the photovoltaic power generation-based railway traction power supply system of the present invention, a self-power generation, self-use and redundant electricity marketing power generation mode is adopted, and therefore, the normal operation of the traction power supply system can be ensured, and redundant electricity is consumed by a power grid. The photovoltaic power generation-based railway traction power supply system is simple in structure and low in investment cost.
Description
technical field [0001] The invention belongs to the technical field of traction power supply, in particular to a railway traction power supply system based on photovoltaic power generation. Background technique [0002] Photovoltaic power generation, as a new power generation method using solar energy as an energy source, has the characteristics of cleanness, no pollution, no noise, and scalable scale. It is one of the best choices for replacing traditional fossil energy power generation in the 21st century. my country has abundant reserves of solar energy resources, and areas with annual total solar radiation greater than 1050kW·h / m2 account for more than 96% of the country's land area. Therefore, photovoltaic power generation has good development prospects in my country, and the development of photovoltaic power generation is strongly supported by national policies. [0003] The scale of railway transportation enterprises is huge, with the basic characteristics of multiple...
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IPC IPC(8): H02M5/14B60M3/00
CPCY02E10/56
Inventor陈维荣邬明亮戴朝华解绍锋高岩赵化博杜彪易金印赵淦花磊汪明雪
OwnerSOUTHWEST JIAOTONG UNIV