CN201836793U - LED roadway illumination system with grid-connected power supply - Google Patents

Abstract

The utility model provides a grid-connected power supply LED road lighting system, comprising: a remote centralized power station, which is used for centralized power generation of solar energy and wind energy to generate direct current electric energy; AC conversion of DC power and integration into the public grid; LED lighting system, connected to the public grid and providing road lighting. This grid-connected power supply LED road lighting system adopts wind and solar centralized power generation technology and grid-connected power supply technology, which improves power generation efficiency, facilitates centralized management and maintenance of equipment, and reduces transformation and maintenance costs. Therefore, it is especially suitable for energy management based on contracts. Transformation of urban public lighting system.

Description

A grid-connected power supply LED road lighting system

technical field

The utility model relates to a public lighting system, in particular to a road lighting system with grid-connected power supply. the

Background technique

At present, the concept of energy conservation and emission reduction is deeply rooted in the hearts of the people, and urban public facilities are increasingly emphasizing the use of low-carbon and clean energy. Due to the huge investment in the transformation of traditional power-consuming facilities, the current common practice is to adopt the energy management contract method, that is, the cost of transforming the power-consuming system is all recovered from the energy saving cost and maintenance saving cost after the transformation is completed. The same is true for road lighting systems. The transformation of traditional urban road lighting systems, on the one hand, uses energy-saving and efficient LED lighting equipment to replace traditional high-power-consuming lamps, and on the other hand, uses clean energy to generate power instead of traditional energy. In the process of transforming the traditional urban road lighting system, in order to meet the requirements of contract energy management, it is necessary to adopt a new road lighting system with low investment cost, good energy saving effect and low maintenance cost. the

However, although various new road lighting products developed at present generally use clean energy such as solar energy and wind energy and LED technology, they are far from the above-mentioned requirements. The reason is that the current LED road lighting equipment is an independent system of a single light pole, that is, each LED lighting equipment has LED lamps, solar cell components, wind turbine components, solar and wind energy controllers, lead-acid batteries and other components. This leads to the complex structure of these LED lighting equipment and high production costs; in the renovation project, all existing light pole foundations and light poles need to be replaced, and the construction cost is high; the service life of lead-acid batteries is short, and there are potential pollution hazards; the electronic control system The structure of the device is complex, prone to failure and high maintenance cost; the street lamp is blocked by road trees and buildings at the installation site, and the power generation efficiency is low. This makes the existing LED road lighting equipment not meet the requirements of the contract energy management model due to its high investment cost, high maintenance cost, and low energy-saving benefits, resulting in very slow promotion and application. the

Utility model content

Aiming at the above-mentioned problems in the prior art, the utility model provides a grid-connected power supply LED road lighting system, which adopts wind and solar centralized power generation technology and remote grid-connected power supply technology based on the public power grid, which improves power generation efficiency and facilitates the concentration of equipment Management and maintenance effectively solve the above problems. the

The grid-connected power supply LED road lighting system described in the utility model specifically includes: a remote centralized power station, which is used for centralized power generation of solar energy and wind energy to generate direct current electric energy; Energy-efficient AC conversion and integration into the public grid; LED lighting system, connected to the public grid and providing road lighting. the

Wherein, the remote centralized power station includes: solar cell components and wind energy components, which are used for wind and wind power generation to generate DC power. the

Wherein, the remote grid-connected equipment includes: an inverter, which converts the DC power into AC power with the same voltage and phase as the public grid; and a step-up transformer, which boosts the AC power and merges it into the public grid. Further preferably, the remote grid-connected device further includes: a power generation meter connected between the inverter and the step-up transformer to measure the generated power. the

Preferably, the LED lighting system includes: a step-down transformer connected to the public power grid and step-down; an AC bus connected to the step-down transformer to supply power to LED lighting fixtures; at least one LED lighting fixture connected to the AC bus to obtain AC power supply and perform illumination. Further preferably, the LED lighting system further includes: a lighting power meter for measuring power consumption of LED lighting fixtures. the

The LED road lighting system of the utility model adopts a remote centralized power station to provide power supply for all LED lighting lamps in the system, and remotely installs solar battery components, wind power generation components, and inverters and other equipment in a centralized manner, and directly merges them into the public power grid; The electricity converted from wind energy is directly absorbed by the public grid. At night, the street lights are directly supplied with electricity from the public grid. The public grid is equivalent to a large storage battery. Remote power generation improves the power generation efficiency of solar and wind energy; the structure of the LED lighting system and its power supply network is consistent with the traditional structure. In the transformation of energy saving and emission reduction, the power supply network is the same, and there is no need to replace power cables, light poles and light pole foundations , save investment in transformation; no battery is used, so there is no risk of pollution caused by battery leakage. Therefore, it fully meets the needs of contract energy management and is conducive to popularization and application. the

Description of drawings

Fig. 1 is the overall structural diagram of the grid-connected power supply LED road lighting system of the utility model embodiment;

Fig. 2 is the specific structural representation of remote centralized power station in the utility model embodiment;

Fig. 3 is the concrete structural representation of the remote grid-connected equipment in the utility model embodiment;

Fig. 4 is a schematic diagram of the specific structure of the LED lighting system in the embodiment of the utility model. the

Detailed ways

In order to describe the technical content, structural features, achieved goals and effects of the present utility model in detail, the following will be described in detail in combination with specific implementation methods and accompanying drawings. the

Fig. 1 is an overall structural diagram of a grid-connected power supply LED road lighting system according to an embodiment of the present invention. In Fig. 1, the remote centralized power station 1 utilizes wind energy and solar energy to generate DC power to provide energy for the entire road lighting system; the remote centralized power station 1 can be established at any distance from the street where the road lighting system is located, for example, can be established in On the outskirts of the city or in open areas not shaded by trees and houses, on top of large buildings, etc. The remote grid-connected equipment 2 connects the remote centralized power station 1 and the public grid 4 , performs AC conversion of the DC power and merges it into the public grid 4 , so that all generated energy is absorbed by the public grid 4 . This remote grid-connected equipment 2 can be installed in a remote equipment room (not shown) close to the remote centralized power station 1 to protect equipment and facilitate maintenance. The electric energy required by the LED lighting system 3 is provided by the public power grid 4, and the LED lighting system 3 realizes the lighting function of the street. the

Fig. 2 is a specific structural diagram of the remote centralized power station 1 in the embodiment of the utility model. As shown in the figure, the remote centralized power station 1 specifically includes: a wind energy module 10 and a solar battery module 11, which are placed in an open area without shelter, so as to improve the power generation efficiency of wind energy and solar energy. the

Fig. 3 is a schematic diagram of the specific structure of the remote grid-connected equipment in the embodiment of the utility model. The remote grid-connected device 2 specifically includes: an inverter 21, which converts the DC power into an AC power with the same voltage and phase as the public grid 4; In addition, a power generation meter 22 is connected between the inverter 21 and the step-up transformer 23 to measure the generated power. The remote grid-connected equipment 2 can be installed in a remote equipment room (not shown) close to the remote centralized power station 1 to protect equipment and facilitate maintenance. the

Fig. 4 is a schematic diagram of the specific structure of the LED lighting system. The LED lighting system 3 includes: a step-down transformer 31, connected to the public power grid and reducing the voltage; an AC bus 33, connected to the step-down transformer 31 to supply power for LED lighting fixtures; at least one LED lighting fixture, that is, LED street lights 34a, 34b, 34c to 34n , and connected to the AC busbar 33 to obtain AC power supply and lighting. The street lamp group 3 also includes a street lamp power meter 32 for measuring the power consumption of the street lamp. the

The utility model adopts clean energy such as solar energy and wind energy and energy-saving LED lighting equipment, and reduces the transformation and maintenance costs through remote centralized power generation and the use of public grid-connected power supply, making the grid-connected power supply LED road lighting system suitable for contract-based energy The transformation of the urban public lighting system in the management mode is conducive to the establishment of a "low-carbon" city. the

The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process conversion made by using the utility model specification and accompanying drawings, or directly or indirectly used in other Related technical fields are all included in the patent protection scope of the present utility model in the same way. the

Claims (6)

1. the power supply LED roadway lighting system that is incorporated into the power networks is characterized in that, comprising: the remote centralized power station is used for solar energy and wind energy centralized power generation and produces direct current energy; Long-range grid-connection device connects described remote centralized power station and public electric wire net, carries out the interchange conversion of described direct current energy and incorporates public electric wire net into; The LED illuminator connects public electric wire net and road lighting is provided.

2. the power supply LED roadway lighting system that is incorporated into the power networks according to claim 1, it is characterized in that described remote centralized power station comprises: solar module and wind energy assembly are used for wind light generation and produce direct current energy.

3. the power supply LED roadway lighting system that is incorporated into the power networks according to claim 1, it is characterized in that described long-range grid-connection device comprises: inverter converts described direct current energy to the alternating current identical with phase place with public electric wire net voltage; Step-up transformer is incorporated public electric wire net into after described alternating current boosted.

4. the power supply LED roadway lighting system that is incorporated into the power networks according to claim 3 is characterized in that described long-range grid-connection device also comprises: the generating gauge table is connected between described inverter and the step-up transformer to measure institute's generated energy.

5. the power supply LED roadway lighting system that is incorporated into the power networks according to claim 1, it is characterized in that described LED illuminator comprises: step-down transformer connects public electric wire net and step-down; Ac bus connects step-down transformer and is the power supply of LED lighting; At least one bar LED lighting, the connection ac bus is obtained the alternating electromotive force supply and is thrown light on.

6. the power supply LED roadway lighting system that is incorporated into the power networks according to claim 5 is characterized in that described LED illuminator also comprises: power for illumination scale, the power consumption of metering LED lighting.

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