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AC/DC cable length control method of photovoltaic power station

A cable length, photovoltaic power station technology, applied in the field of solar energy, to achieve the effect of avoiding waste of resources

Inactive Publication Date: 2017-03-29
XUJI GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for controlling the length of AC and DC cables in a photovoltaic power station, which is used to solve the problem of precise control of the cable length required for wiring in a photovoltaic power station

Method used

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  • AC/DC cable length control method of photovoltaic power station
  • AC/DC cable length control method of photovoltaic power station
  • AC/DC cable length control method of photovoltaic power station

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Embodiment Construction

[0027] The invention will be described in further detail below in conjunction with the accompanying drawings.

[0028] figure 1 The structural block diagram of the transmission line of the photovoltaic power station is given, that is, the direct current delivered by each photovoltaic string is combined by the intelligent combiner box, and then sent to the integrated DC inverter for inversion, and the alternating current output by the integrated DC inverter is delivered to the box Transformation, and finally through the AC switchgear for long-distance power transmission. Among them, the connections between n (6≤n≤16) photovoltaic strings, n-input and 1-outlet combiner boxes, and the integrated DC inverter are as follows: figure 2 shown. Assume that the line from the photovoltaic string to the combiner box is the DC section I, and the line from the combiner box to the DC inverter is the DC section II.

[0029] The flow chart of the method for controlling the length of AC and...

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Abstract

The invention relates to an AC / DC cable length control method of a photovoltaic power station. The AC / DC cable length control method comprises the steps of acquiring a voltage, a current and a voltage loss rate of a DC or AC circuit; acquiring a cross section area and resistivity of a cable to be needed; and calculating a cable length required by the DC or AC circuit under the condition that the voltage loss rate is constant according to the voltage, the current and the voltage loss rate of the DC or AC circuit and a relation between the cross section and the resistivity of the cable. By the method, the required cable length during circuit laying can be accurately calculated, and resource waste caused by the excessively-reserved cable under the condition that application demand is satisfied is prevented.

Description

technical field [0001] The invention relates to a method for controlling the length of an AC and DC cable in a photovoltaic power station, which belongs to the technical field of solar energy. Background technique [0002] With the increasingly prominent energy crisis, human research on new energy has been paid more and more attention. Among them, photovoltaic power generation, as a relatively mature new energy source, has become one of the most promising new energy sources due to its inexhaustible, inexhaustible and small regional restrictions, and has attracted widespread attention from all countries. And it has been developed rapidly and widely used. In the case of a fixed installed capacity of a photovoltaic power station, how to choose a cable cross-sectional area that is economical and satisfies the loss rate of the line loss has become the primary issue of the photovoltaic power station. [0003] Among them, the Chinese invention patent with the publication number C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 朱美玲雷振锋路进升王景丹胡筱王冬朱翠丽牛高远赵萌萌孙磊杰
Owner XUJI GRP
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