Power supply system and power supply method for railways in desert areas based on wind-photovoltaic complementary power generation

A wind-solar complementary power generation and power supply system technology, applied in photovoltaic power generation, wind power generation, photovoltaic power stations, etc., can solve problems such as uncontinuous power supply, large fluctuations of photovoltaic and wind power, etc.

Pending Publication Date: 2017-05-03
GANSU ELECTRIC POWER DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to provide a power supply system for railways in desert areas using wind-solar hybrid power generation to solve the problems of large fluctuations in power generated by photovoltaics and wind power and the inability to provide continuous power supply

Method used

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  • Power supply system and power supply method for railways in desert areas based on wind-photovoltaic complementary power generation
  • Power supply system and power supply method for railways in desert areas based on wind-photovoltaic complementary power generation

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Embodiment

[0031] (1), see figure 1 : According to the routine, the land on both sides of the railway track in the desert area has been idle for a long time, and has not been comprehensively developed and utilized. The scenery along the line is monotonous and boring, and the wind and sand are also particularly large. In order to develop and utilize wind power and photovoltaics, the present invention moderately expands the safety protection area for the construction of photovoltaic arrays and wind turbines, which not only solves the problem of comprehensive land utilization, but also beautifies the environment. At the same time, the new energy power generation device can also control wind and sand as a buffer isolation zone.

[0032] (2), see figure 1 with figure 2 : According to the usual practice, the DC power generated by the photovoltaic array needs to be converted into AC power by the inverter, and then collected and boosted. The power grid and the AC catenary lead to the AC power...

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Abstract

The invention discloses a power supply system and a power supply method for railways in desert areas based on wind-photovoltaic complementary power generation in order to solve the problem that power generated from photovoltaic and wind energy is volatile and cannot be supplied continuously. The system comprises photovoltaic arrays and fans. The system further comprises a photovoltaic DC influx line, a wind DC influx line, and DC overhead equipment. The photovoltaic arrays are connected to the run-through DC overhead equipment through the photovoltaic DC influx line. The fans are connected to the run-through DC overhead equipment through the wind DC influx line. Wind energy and photovoltaic energy systems are constructed in expanded safety protection zones along railways to realize comprehensive utilization of land. By changing the traditional wind-driven and photovoltaic power generation and boosting modes and employing a DC collection scheme for both photovoltaic energy and wind energy, the inverting process of new energy is reduced, and the harmonic component is reduced. The AC overhead equipment of a railway locomotive is changed into DC overhead equipment, power is supplied to a DC traction motor directly after being taken from the overhead equipment, and balanced consumption of new energy is achieved.

Description

technical field [0001] The invention belongs to the field of railway power supply, and in particular relates to a desert area railway power supply system and a power supply method. Background technique [0002] The railway is an important infrastructure and economic artery of the country, which is conducive to driving the economic and social development of the areas along the line. However, due to the public welfare and low cost of railway transportation, the huge railway power supply system and huge electricity purchase fees make railway companies bear the dual pressure of high operating costs and power supply security. [0003] In particular, the railways built in the desertified areas of Northwest my country pass through many uninhabited areas and are more than hundreds of kilometers away from power grid resources. Considering the safety and reliability of power supply, two independent power sources need to be drawn from the power grid for power supply, and the cost of po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/28H02J3/01H02S10/12
CPCH02J3/383H02J3/386H02J3/01H02J3/28H02S10/12Y02E70/30Y02E10/56Y02E10/76Y02E40/40
Inventor 吴兴全李志伟姚天亮王堃刘宏李秋鹏张洪源丁国亮代海建
Owner GANSU ELECTRIC POWER DESIGN INST
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