Power supply system and operation method of intelligent peak shifting and valley filling superimposed photovoltaic power generation

A technology of photovoltaic power generation, peak shifting and valley filling, applied in photovoltaic power generation, energy storage, battery circuit devices, etc., can solve problems such as short supply of electricity during the day, unbalanced power consumption of the power grid, hidden dangers of power grid security, etc., to save computer room space and The effect of equipment cost, utilization maximization, and energy saving effect maximization

Pending Publication Date: 2017-04-26
ZHONGTA XINXING COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For a long time, the electricity consumption of the power grid has been unbalanced. During the day, the power supply exceeds the demand. The power supply company frequently restricts the power of users. At night, the power supply exceeds the demand, which not only poses safety hazards to the power grid, but also causes energy waste.

Method used

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  • Power supply system and operation method of intelligent peak shifting and valley filling superimposed photovoltaic power generation
  • Power supply system and operation method of intelligent peak shifting and valley filling superimposed photovoltaic power generation
  • Power supply system and operation method of intelligent peak shifting and valley filling superimposed photovoltaic power generation

Examples

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Embodiment 1

[0044] see figure 1 Shown is the flow chart of the operation method of the power supply system of intelligent peak shifting and valley filling superimposed photovoltaic power generation in this application. The method includes:

[0045] Step 101. Determine the power generation of the photovoltaic rectification module group, and determine the operating mode of the intelligent peak-shifting and valley-filling superimposed photovoltaic power supply system according to the power generation of the photovoltaic rectification module group:

[0046] Step 102. When the power generation of the photovoltaic rectification module group is zero, the power system of the intelligent peak-shifting and valley-filling superimposed photovoltaic power generation adopts the method of supplying power to the load through the storage battery group during the peak power period, and through the mains rectification module group to supply power to the load during the flat power period. Load power supply, ...

Embodiment 2

[0059] see figure 2 , the present application also provides an intelligent peak-shifting and valley-filling superimposed photovoltaic power supply system 100, which is characterized in that it includes: a control module 10, a photovoltaic rectification module group 20, a photovoltaic detection module 30, a mains power rectification module group 40 and a storage battery Group 50,

[0060] The control module 10 is configured to send detection instructions to the photovoltaic detection module 30, judge the power generation of the photovoltaic rectification module group 20, and determine the power supply system 100 of the intelligent peak-shifting and valley-filling superimposed photovoltaic power generation according to the power generation of the photovoltaic rectification module group 20 The operation mode is also used to calculate the remaining total power of the battery pack 50. When the remaining total power of the battery pack 50 is greater than the preset power, the batte...

Embodiment 3

[0074] The following provides an application example of the power supply system and operation method of the intelligent peak-shifting and valley-filling superimposed photovoltaic power generation of this application, see Figure 4 .

[0075] A communication base station computer room, 48V power supply system, system load current 60A, load average power 3KW, Figure 4 The load in is embodied as communication device 201 . The computer room of the base station is located in the central region, and the electricity price period announced by the local power company is 8 hours for peak power (8:00 to 12:00, 18:00 to 22:00) and 8 hours for flat power (12:00 to 18:00, 22:00 to 24:00 ), valley electricity for 8 hours (0:00 to 8:00).

[0076] The 48V lithium iron phosphate battery pack 51 is configured according to the principle of 8-hour discharge and 2-hour backup, and the total capacity is 48V / 600AH; the photovoltaic module 21 is configured according to the 6-hour average output pow...

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Abstract

The invention discloses a power supply system and an operation method of intelligent peak shifting and valley filling superimposed photovoltaic power generation. The method comprises the following steps: judging the photovoltaic power generation quantity, and determining an operation mode of the system according to the photovoltaic power generation quantity; when the photovoltaic power generation quantity is zero, operating the system by providing power supply through a storage battery pack in a peak power time period, providing power supply through the electric supply in a flat power time period, providing power supply through the electric supply and performing floating charge on the storage battery pack in a valley power time period; when the photovoltaic power generation quantity is larger than or equal to a preset volume, adopting photovoltaic power supply by the system in the peak power time period, the flat power time period and the valley power time period; when the photovoltaic power generation capacity is smaller than the preset volume, adopting the photovoltaic power supply by the system in the peak power time period, and when the generating capacity of a photovoltaic rectifier module group is smaller than the load capacity of the peak power time period, controlling the storage battery pack to discharge to supplement the insufficient photovoltaic power generation part; and adopting the photovoltaic power supply by the system in the flat power time period, and when the photovoltaic power generation capacity is smaller than the load capacity of the flat power time period, adopting the electric supply to supplement the insufficient photovoltaic power generation part, thereby effectively saving resources.

Description

technical field [0001] This application relates to the field of communication power supply equipment, in particular, to an intelligent peak-shifting and valley-filling superimposed photovoltaic power generation system and its operating method. Background technique [0002] Peak-shifting and valley-filling refers to reducing peak power consumption and increasing low-peak power consumption in power supply systems that require continuous and uninterrupted power supply for electrical equipment, such as communication equipment rooms, where the power supply load continues to remain unchanged. [0003] For a long time, the power grid has been unbalanced. During the day, the power supply exceeds the demand. The power supply company frequently restricts the power of users. At night, the power supply exceeds the demand, which not only poses safety hazards to the grid, but also causes energy waste. Therefore, it is necessary to shift the peak and fill the valley to the power grid to re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/32H02J7/35
CPCH02J3/32H02J7/35Y02E70/30Y02E10/56
Inventor 赵长煦
Owner ZHONGTA XINXING COMM TECH
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