Electrical system for enhancing anti-interference capability of street lamp power line carrier signal

Abstract

The utility model discloses an electrical system for enhancing the anti-interference capability of a street lamp power line carrier signal, which comprises a control center, a power distribution system, a power supply line, a single lamp controller and an LED lamp, the isolation device is arranged at a power supply incoming line and electrically isolates a power supply side from a load side; the middle controller communicates with a control center through a GPRS wireless network, and the single lamp controller communicates with the centralized controller through power line carrier communication; the power supply line is a connecting line from the power distribution system to the single lamp controller; the power distribution system is connected with the single-lamp controller through a power supply line, the single-lamp controller supplies power to the LED lamps, and the control center communicates with the centralized controller through a GPRS wireless network. According to the utility model, signal loss and inter-phase signal interference of three-phase power supply are overcome from a power supply structure, improvement of electromagnetic compatibility (EMC) is facilitated, electronic equipment can be effectively protected, the service life of the equipment is prolonged, and the quality of signal transmission is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of building electrical, specifically relates to a kind of electrical system for strengthening street lamp power line carrier signal anti-interference ability. BACKGROUND

[0002] Power line carrier communication (PLC for short) is a kind of technology using existing power line for data transmission, which can realize information transmission and reception in low-voltage or medium-high voltage power network. PLC technology has been widely used in smart grid, smart home and industrial automation due to its convenience and cost-effectiveness.

[0003] In the intelligent street lamp control system, the advantage of PLC technology is particularly significant, which can use existing power supply line for data transmission, thereby avoiding the additional cost of laying special communication line. Since the street lamp is directly connected to the power line, only the power carrier controller needs to be installed inside the street lamp, and remote monitoring and control of the street lamp can be realized.

[0004] However, PLC technology has certain limitations in practical application, especially in terms of anti-interference ability. For example, in a three-phase power line system, there may be significant signal loss between different phases, and signal interference problem is particularly prominent in short distance communication.

[0005] Chinese patent CN 203523079U discloses an LED street lamp intelligent control system based on power line carrier communication, although the patent discloses the application of PLC technology in street lamp control, but does not provide a solution to the interference problem.

[0006] In order to overcome the technical defects of PLC technology susceptible to interference, in addition to using high-performance anti-interference communication module, corresponding measures can also be taken from the perspective of electrical system design. The utility model patent aims to design an electrical system that can strengthen the anti-interference ability of street lamp power line carrier communication, to improve the stability and reliability of communication. CONTENT OF UTILITY MODEL

[0007] Since the street lamp power line carrier control system is implemented in the implementation process, the electrical basic engineering is generally implemented first, and the street lamp installation is implemented later. Due to the difference of the implementation subject, the distribution box and power supply line of the electrical basic engineering in the early stage often cannot meet the requirements of power line carrier communication, which affects the quality of power line carrier communication.

[0008] The purpose of the utility model is to strengthen the anti-interference ability of street lamp power line carrier communication by increasing isolation device, lightning protection device, taking single-phase power supply structure and shielding grounding and other measures.

[0009] To achieve the above object, the utility model provides the following technical scheme: a kind of electrical system for strengthening street lamp power line carrier signal anti-interference ability, including:

[0010] Control center, distribution system, power supply line, single lamp controller, LED lamp;

[0011] The distribution system is internally provided with: isolating device and centralized controller;

[0012] The isolating device is arranged at power supply incoming line, and the power supply side and load side are electrically isolated;

[0013] The centralized controller communicates with control center by GPRS wireless network, and single lamp controller adopts power line carrier communication and communicates with centralized controller;

[0014] The power supply line is the connecting line from distribution system to single lamp controller, and adopts single-phase alternating current 220V distribution;

[0015] Preferably, the distribution system and single lamp controller are provided with lightning protection device.

[0016] Preferably, the lightning protection device is surge protector SPD.

[0017] Preferably, the lightning protection device is repeatedly grounded.

[0018] Preferably, the power supply line adopts shielded cable.

[0019] Preferably, the shielded cable is grounded at both ends of shielding layer and intermediate branch.

[0020] Preferably, the control center is control machine room.

[0021] Compared with prior art, the utility model has the beneficial effects that:

[0022] Loop from distribution system adopts single-phase power supply, and signal loss and interphase signal interference of three-phase power supply are overcome from power supply structure.

[0023] Cable shielding layer is grounded at both ends and intermediate branch, to form complete shielding path.

[0024] (3) lightning protection device is arranged at single lamp controller and repeatedly grounded, to help improve electromagnetic compatibility (EMC) of the whole system, effectively protect electronic equipment in lightning or other overvoltage events, prolong equipment life, and improve signal transmission quality. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is structure schematic diagram of the utility model; DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative work are within the protection scope of the utility model.

[0027] The utility model provides a kind of electrical system for strengthening road lamp power line carrier signal anti-interference ability as Figure 1 As shown in a kind of electrical system for strengthening road lamp power line carrier signal anti-interference ability, comprising:

[0028] Control center, distribution system, power supply line, single lamp controller, LED lamp;

[0029] Wherein distribution system is internally provided with: centralized controller and isolating device;

[0030] Distribution system to the power supply loop of single lamp controller adopts single-phase alternating current 220V distribution;The centralized controller is communicated with control center by GPRS wireless network, and single lamp controller adopts power line carrier communication and is communicated with centralized controller;

[0031] Power supply is powered for distribution system after isolating device, and distribution system is connected single lamp controller by power supply line, and single lamp controller is powered for LED lamp;Control center is communicated with centralized controller by GPRS wireless network.Distribution system internally and single lamp controller are provided with surge protector SPD and repeated grounding.The power supply line adopts shielded cable, and the shielding layer of cable is grounded at both ends and intermediate branch.

[0032] Finally, it should be noted that: the above-mentioned only for preferred embodiment of the utility model has, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. An electrical system for enhancing the anti-jamming capability of a street light power line carrier signal, characterized by, The utility model relates to a centralized control system for LED lamps, comprising: a control center, a power distribution system, a power supply line, a single lamp controller, and an LED lamp; the power distribution system is internally provided with a centralized controller and an isolation device; the isolation device is arranged at the power supply incoming line to electrically isolate the power supply side and the load side; the centralized controller communicates with the control center through a GPRS wireless network, and the single lamp controller communicates with the centralized controller through power line carrier communication; the power supply line is a connection line from the power distribution system to the single lamp controller, and single-phase alternating current 220V power distribution is adopted; the power distribution system is connected to the single lamp controller through the power supply line, the single lamp controller supplies power to the LED lamp, and the control center communicates with the centralized controller through a GPRS wireless network.

2. The electrical system for enhancing the anti-interference capability of power line carrier signals of street lamps according to claim 1, characterized in that: The power distribution system and the single lamp controller are both provided with lightning protection devices.

3. The electrical system for enhancing the anti-jamming capability of power line carrier signals of street lamps according to claim 2, characterized in that: The lightning protection device is a surge protector SPD.

4. The electrical system for enhancing the anti-jamming capability of power line carrier signals of street lamps according to claim 1, characterized in that: The power supply line adopts a shielded cable.

5. The electrical system for enhancing the anti-jamming capability of power line carrier signals of street lamps according to claim 4, characterized in that: The shielded layer of the shielded cable is grounded at both ends and at the intermediate branch.

6. The electrical system for enhancing the anti-interference capability of power line carrier signals of street lamps according to claim 2 or 3, characterized in that: The lightning protection device is repeatedly grounded.

7. The electrical system for enhancing the anti-jamming capability of power line carrier signals of street lights according to claim 1, wherein: The control center is a control room.

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