Wind and solar hybrid generation system for communication base station based on dual direct-current bus control

A DC bus and communication base station technology, which is applied in the field of wind and solar hybrid power generation system for communication base stations based on dual DC bus control, can solve the problems of reduced utilization of photovoltaic power generation and wind power generation, shortened service life of batteries, and increased system maintenance costs, etc. , to achieve the effect of optimizing the charging and discharging process, reducing conversion loss, and improving power supply guarantee capability

Inactive Publication Date: 2010-03-17
路建乡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will not only increase the purchase cost of the system, but also cause all batteries to run in a state of power deficit for a long time during the low power generation period, resulting in shortened battery life and increased system maintenance costs.
[0012] In addition, in order to stabilize the fluctuations of the common DC bus voltage caused by large fluctuations in the power generated by photovoltaic arrays and wind turbines, which will affect the normal operation of the system, photovoltaic arrays and wind turbines may be frequently cut out, and the utilization rate of photovoltaic power generation and wind power generation Greatly reduced
The power generation capacity of the system is lower than the design expectation, which may lead to further deterioration of the operating condition of the system

Method used

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  • Wind and solar hybrid generation system for communication base station based on dual direct-current bus control
  • Wind and solar hybrid generation system for communication base station based on dual direct-current bus control
  • Wind and solar hybrid generation system for communication base station based on dual direct-current bus control

Examples

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Effect test

Embodiment 1

[0047] This embodiment is a basic type of wind-solar hybrid power generation system for communication base stations based on dual DC bus control, such as figure 1 shown. It includes a photovoltaic array (1), a wind generator (2), an AC / DC converter (3), a discharge device (8), an energy storage device (7), a controller (20), and a charging side DC bus (4 ), discharge side DC busbar (5), battery pack switching circuit (6), photovoltaic array switching circuit (19), overload protection circuit (14), discharge switch (9), DC / AC inverter (17); The energy storage device (7) is divided into three battery packs (71, 72 and 73), and the capacities of battery packs 1, 2 and 3 (71, 72 and 73) are similar and can be connected in parallel; the controller (20) also includes a central Control unit, charge detection unit, discharge detection unit.

[0048] Such as figure 2 , image 3 As shown, the photovoltaic array (1) is connected to the input terminal (191) of the photovoltaic array ...

Embodiment 2

[0063] This embodiment is an extended type of wind-solar hybrid power generation system for communication base stations based on dual DC bus control, such as Figure 5 shown. It includes a photovoltaic array (1), a wind turbine (2), an AC / DC converter (3), a discharge device (8), an energy storage device (7), a controller (20), and a DC bus on the charging side (4 ), discharge side DC busbar (5), battery pack switching circuit (6), photovoltaic array step-by-step switching circuit (19X), discharge switch (9), DC / AC inverter (17), overload protection circuit (14 ), load distribution circuit (15); the energy storage device (7) is divided into three battery packs (71, 72 and 73), and the capacities of battery packs 1, 2 and 3 (71, 72 and 73) are similar and can be connected in parallel ; The photovoltaic array (1) is divided into 4 photovoltaic sub-arrays (101, 102, 103 and 104), and the rated voltages of the photovoltaic sub-arrays 1, 2, 3 and 4 (101, 102, 103 and 104) are the ...

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Abstract

The invention relates to a wind and solar hybrid generation system for a communication base station based on dual direct-current bus control, comprising photovoltaic arrays, a wind-power generator, storage battery sets, unloading devices, an intelligent controller, a charging side direct-current bus, a discharging side direct-current bus, a storage battery set switching circuit, a photovoltaic array switching circuit, an unloading device switching circuit, an overload protecting circuit, a load distributing circuit, an AC / DC converter and a DC / AC inverter. The intelligent controller is sequentially connected to a charging storage battery set and a discharging storage battery set in turn through monitoring the voltage and current change of the dual direct-current buses, switches the photovoltaic arrays and is connected to the unloading devices step by step to control the connection of secondary loads. The invention can effectively enhance the generating capacity of the photovoltaic arrays and the wind-power generator and the utilization ratio of storage batteries, extend the service lift of the storage batteries, supply stable direct-current output, reduce the cost of the system andprovide continuous stable power supply to the communication base station far away from a grid.

Description

technical field [0001] The invention relates to the technical field of power supply using renewable energy for power generation, in particular to a wind-solar hybrid power generation system for communication base stations based on dual DC bus control. Background technique [0002] As clean and renewable energy, solar energy and wind energy will be one of the most important energy sources for human beings in the future. Wind power and photovoltaic power generation are of great significance to alleviating the current energy crisis and improving the ecological environment. [0003] Mobile communication systems such as GSM and CDMA have been widely used in countries all over the world. Generally, MSS is concentrated in the main computer room of the system as a mobile switching center, and a large number of mobile communication base stations are scattered in places that need signal coverage. In China alone, more than 500,000 base stations of various types have been distributed, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/35H02J7/02F03D9/00H01L31/042F03D9/11H02S10/12H02S40/38
CPCY02E10/725Y02E10/566Y02E10/766Y02E10/56Y02E10/72Y02E10/76Y02E70/30
Inventor 路建乡
Owner 路建乡
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