CN201937937U - Power saving device for HPSL (high pressure sodium lamp) - Google Patents

Abstract

The utility model provides an energy-saving device for a high-pressure sodium lamp, which is arranged between a street lamp system and a street lamp power supply line, and includes a power carrier communication unit, a power management unit, a thyristor control unit, an electric parameter detection unit and a single-chip microcomputer control unit; The power carrier communication unit is connected to the street lamp power supply line; the thyristor control unit is arranged between the street lamp power supply line and the street lamp; the thyristor control unit is also connected to the single-chip microcomputer control unit; the electrical parameter detection unit is respectively It is connected with the thyristor control unit and the single-chip microcomputer control unit; the single-chip microcomputer control unit is respectively connected with the power carrier communication unit, the thyristor control unit and the electric parameter detection unit. The energy-saving device connects the energy-saving device with power network communication function between each street lamp and the street lamp power supply line, so that the server-side street lamp control platform can understand the working status of each street lamp in real time, and then realize precise control of each street lamp.

Description

A high-pressure sodium lamp power-saving device

technical field

The utility model relates to a power-saving device for high-pressure sodium lamps, in particular to a power-saving power-saving device that uses power carrier communication technology to implement step-down control for single street lamps on urban roads that have been constructed and installed, especially high-pressure sodium lamps that use inductive ballasts. device to realize energy-saving control of urban road lighting. The utility model belongs to the technical field of lighting power saving.

Background technique

High-pressure sodium lamps are mainly used for road lighting. At present, there are three main energy-saving methods for street lighting:

1. Interval lighting method or single-side lighting method, that is, lighting a street lamp every other street lamp or only lighting one side of the street lamp. This energy-saving method is likely to cause uneven light intensity on the road surface and affect road safety.

2. The line voltage regulation method is to reduce the power supply voltage of the entire street lamp line through a transformer. This energy-saving method is likely to cause the power supply voltage at the end of the line to be too low, and even cause the street lamps to fail to light up normally, which also affects road safety.

3. Single lamp current limiting method, that is, a single street lamp adopts the method of connecting an additional inductance coil in series to limit the current of the street lamp circuit. This method adds an additional inductance coil and a supporting controller, which is larger in size and higher in installation costs, and the control of the additional inductance coil is controlled by the relay of the controller, and the limited life of the relay limits the long-term life of the device. Reliable use.

To sum up, there are various power-saving methods for road lighting high-pressure sodium lamps, but each has its own shortcomings. Therefore, it is necessary for us to design a new type of energy-saving device for high-pressure sodium lamps, which meets the needs of energy-saving control of urban road lighting.

Contents of the invention

The purpose of this utility model is to solve the problems existing in the prior art, and to provide an energy-saving device that utilizes power carrier communication technology to implement step-down control for a single street lamp on an urban road that has been installed, so as to realize energy saving for urban road lighting control.

The purpose of this utility model is achieved through the following technical solutions:

A high-pressure sodium lamp energy-saving device, which is arranged between the street lamp system and the street lamp power supply line, is characterized in that it includes a power carrier communication unit, a power management unit, a thyristor control unit, an electrical parameter detection unit, and a single-chip microcomputer control unit;

The power carrier communication unit is connected to the street lamp power supply line for data communication with the street lamp control platform on the server side through the street lamp power supply line;

The power management unit is used to supply power to each power consumption unit in the power saving device;

The thyristor control unit is arranged between the street lamp power supply line and the street lamp; the thyristor control unit is also connected with the single-chip microcomputer control unit;

The electrical parameter detection unit is respectively connected with the thyristor control unit and the single-chip microcomputer control unit;

The single-chip microcomputer control unit is respectively connected with the power carrier communication unit, the thyristor control unit and the electrical parameter detection unit.

The thyristor control unit is composed of a voltage zero-crossing trigger thyristor circuit and a phase-shift control thyristor circuit in series; two thyristor circuits are connected in series between the street lamp power supply line and the street lamp; the voltage zero-crossing trigger can be The thyristor circuit is located on one side of the street lamp power supply line, and the phase-shift control thyristor circuit is located on the side of the street lamp; the connection ends of the two thyristor circuits are connected to the compensation capacitor of the street lamp.

A pair of IGBT circuits are also connected in parallel on the phase-shift control thyristor circuit; the pair of IGBT circuits are connected in series with each other and have a common emitter.

The beneficial effect of the utility model is: the energy-saving device connects the energy-saving device with the power network communication function between each street lamp and the street lamp power supply line, so that the street lamp control platform at the server end can know the working status of each street lamp in real time, and then To achieve precise control of each street lamp.

Description of drawings

Fig. 1 is a schematic block diagram of a power saving device for a high pressure sodium lamp;

Figure 2 is a schematic diagram of the connection of the thyristor control unit;

Fig. 3 is a circuit diagram 1 of the thyristor control unit;

Figure 4 is the second circuit diagram of the thyristor control unit.

Detailed ways

The purpose of this utility model is achieved through the following technical solutions:

The energy-saving device for high-pressure sodium lamps designed by the utility model is based on the power carrier communication technology, in view of the aforementioned energy-saving mode of interval lighting and line voltage regulation and power-saving mode, which will affect road safety due to the different voltage regulation of each street lamp. The energy-saving device is connected between the existing street lamp system and the street lamp power supply line to control the voltage of each connected street lamp through the signal control of the power carrier network. On the one hand, the device adjusts the voltage of each street lamp separately, so as to realize uniform voltage regulation and ensure the safety of road lighting; Retrofit costs are relatively low.

Fig. 1 is a schematic diagram of a power saving device for a high pressure sodium lamp of the present invention. As shown in the figure, the high pressure sodium lamp power saving device includes: a power carrier communication unit 1 , a power management unit 2 , a thyristor control unit 3 , an electrical parameter detection unit 4 and a single chip microcomputer control unit 5 .

The power carrier communication unit 1 is connected to the street lamp power supply line for data communication with the street lamp control platform at the server side through the street lamp power supply line. Here, the communication between the power carrier communication unit 1 and the server is realized through the power carrier communication technology that realizes data communication based on the power network. The power carrier communication technology is an existing technology, and will not be described here.

The power management unit 2 is an AC/DC conversion module for supplying power to each power consumption unit in the power saving device.

The silicon controlled rectifier control unit 3 is a voltage regulation control unit of the street lamp, as shown in FIG. 2 , it is arranged between the power supply line of the street lamp and the street lamp. The thyristor control unit 3 is also connected with the single-chip control unit 5, and is controlled by the single-chip control unit 5 to regulate the voltage of the street lamp.

The electrical parameter detection unit 4 is connected to the thyristor control unit 3 and the single-chip microcomputer control unit 5 respectively. On the one hand, the electrical parameter detection unit 4 collects the electrical parameters of the thyristor control unit 3 , and on the other hand, sends the collected electrical parameters to the single-chip microcomputer control unit 5 .

The single-chip control unit 5 is the core control unit of the power-saving device, and is connected with the power carrier communication unit 1 , the thyristor control unit 3 and the electric parameter detection unit 4 respectively. The single-chip microcomputer control unit 5 receives the electrical parameter data sent by the electrical parameter detection unit 4, performs data communication with the street lamp control platform on the server side through the power carrier communication unit 1, and finally controls the thyristor control unit 3 according to the control command sent by the server side. control.

It can be seen from the above that the high-pressure sodium lamp energy-saving device designed in this patent connects the energy-saving device with power network communication function between each street lamp and the street lamp power supply line, so that the server-side street lamp control platform can understand the working status of each street lamp in real time. And then realize the precise control of each street lamp. In this way, it not only realizes the power-saving control of the street lighting system, but also ensures that the safety of road lighting is not affected.

The power-saving device for high-voltage sodium lamps designed in this patent is based on the above-mentioned structure, aiming at the problem that the street lamp is likely to cause an impact on the power grid when the street lamp is powered on, and the problem of large harmonics in the power grid controlled by the thyristor phase-shifting voltage regulation of the power-saving device. The specific circuit structure of the thyristor control unit 3 has been further designed.

Figure 3 is the first circuit diagram of the thyristor control unit. As shown in the figure, the thyristor control unit 3 is composed of a voltage zero-crossing trigger thyristor circuit TLP3063 and a phase-shift control thyristor circuit TLP3023 connected in series. Two thyristor circuits are connected in series between the street lamp power supply line and the street lamp. Wherein, the voltage zero-crossing trigger thyristor circuit is located at the street lamp power supply line side, and the phase shift control thyristor circuit is located at the street lamp side. The connecting ends of the two thyristor circuits are connected to the compensation capacitor of the street lamp. As shown in the figure, the zero-crossing voltage triggers the PB0 terminal of the thyristor circuit and the PB1 terminal of the phase-shift control thyristor circuit are respectively connected to the single-chip microcomputer control unit 5 and are controlled by the single-chip microcomputer control unit 5 .

For the silicon controlled rectifier control unit with the above structure, on the one hand, when the device is powered on, it first controls the zero crossing of the voltage to trigger the thyristor to turn on the output voltage when the voltage crosses zero, and makes the output voltage the same as the voltage of the compensation capacitor, thereby It reduces the impact of power-on of street lamps on the power grid. On the other hand, the phase-shift control thyristor circuit can be controlled by the single-chip microcomputer control unit 5 to realize smooth regulation of the output voltage of the street lamp by adjusting the turn-on and turn-off of the phase-shift thyristor.

As mentioned above, the phase-shift control thyristor circuit realizes regulation of the output voltage of the street lamp by adjusting the turn-on and turn-off of the thyristor. However, this voltage regulation method is likely to cause harmonic interference to the power grid. In view of this, we have proposed an improved structure of the above-mentioned thyristor control unit.

Figure 4 is the second circuit diagram of the thyristor control unit. As shown in the figure, the thyristor control unit 3 is based on the structure of the foregoing thyristor control unit, and a pair of IGBT circuits are connected in parallel to the phase-shift control thyristor circuit. The pair of IGBT circuits are connected in series and have a common emitter. The IGBT circuit is in the off state by default. When the phase-shift control thyristor is turned off, the IGBT circuit high-frequency switch output, before the phase-shift control thyristor is turned on, the IGBT circuit turns off the output, and the addition of the IGBT circuit can reduce the shift. Harmonic interference to the power grid during phase thyristor regulation.

To sum up, the utility model provides a power-saving device using power carrier communication technology to implement step-down control. The energy-saving device connects the energy-saving device with power network communication function between each street lamp and the street lamp power supply line, so that the server-side street lamp control platform can understand the working status of each street lamp in real time, and then realize precise control of each street lamp. At the same time, the energy-saving device prevents the impact on the power grid when the street lamp is powered on through the transformation of the thyristor control unit, and realizes smooth regulation of the output voltage of the street lamp. Any non-creative modification made to the device by those skilled in the art under this design concept should be considered within the protection scope of the present utility model.

Claims (3)

1. a high-pressure sodium lamp battery saving arrangement is arranged between road lamp system and the street lamp power supply, road lamp power supply circuit, it is characterized in that: comprise power carrier communication unit, Power Management Unit, SCR control unit, electrical parameters detection unit and Single-chip Controlling unit;

Described power carrier communication unit is linked on the street lamp power supply, road lamp power supply circuit, carries out data communication in order to the street lamp regulation and control platform by street lamp power supply, road lamp power supply circuit and server end;

Described Power Management Unit is in order to power to each power unit in the battery saving arrangement;

Described SCR control unit is arranged between street lamp power supply, road lamp power supply circuit and the street lamp; This SCR control unit also links to each other with the Single-chip Controlling unit;

Described electrical parameters detection unit links to each other with SCR control unit, Single-chip Controlling unit respectively;

Described Single-chip Controlling unit links to each other with power carrier communication unit, SCR control unit and electrical parameters detection unit respectively.

2. high-pressure sodium lamp battery saving arrangement as claimed in claim 1 is characterized in that: connected with the phase shifting control ghyristor circuit by voltage zero-cross triggering ghyristor circuit and constitute in described SCR control unit; Two ghyristor circuits are connected between street lamp power supply, road lamp power supply circuit and the street lamp; Described voltage zero-cross triggers ghyristor circuit and is positioned at street lamp power supply, road lamp power supply circuit one side, and the phase shifting control ghyristor circuit is positioned at street lamp one side; The link of described two ghyristor circuits and the building-out capacitor of street lamp join.

3. high-pressure sodium lamp battery saving arrangement as claimed in claim 2 is characterized in that: also be parallel with a pair of I GBT circuit on described phase shifting control ghyristor circuit; This is connected mutually to the IGBT circuit, common emitter.

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