CN101784152A

CN101784152A - Power-saving method of high voltage sodium lamp

Info

Publication number: CN101784152A
Application number: CN201010301038A
Authority: CN
Inventors: 张振; 张万奎
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-02-02
Filing date: 2010-02-02
Publication date: 2010-07-21

Abstract

The invention discloses a power-saving method of a high voltage sodium lamp. The invention is characterized in that the high voltage sodium lamp is connected between the phase lines at the secondary side of a transformer and a zero line, the high voltage sodium lamps between the same phase lines are connected in parallel, and the phase lines at the secondary side of the transformer share one zero line; the two phase lines and the zero line are respectively connected with an AC contactor main contact, an electronic controller is connected in front of the AC contactor main contact connected with the two phase lines, and the electronic controller is provided with a light-sensitive relay, an AC contactor, an intermediate relay and a time relay; before evening comes, the light-sensitive relay in the electronic controller works, a normally open contact is closed, the coils of the AC contactor, the intermediate relay and time relay are simultaneously energized, and the AC contactor main contact is closed at the same time; and when the set evening time comes, the time relay close the delayed normally closed contact, the intermediate relay contact is closed, the AC contactor main contact on the zero line is closed, the zero line is cut off, and the lamps are automatically switched to the two-by-two series connection and are then powered by line voltage. By using the electronic controller to automatically reduce the power supply voltage to the optimum midnight voltage (200V) for the lamps, the invention has the advantages of low investment, and no harmonic wave, no impact and no pollution to the electric network when the power-saving device works.

Description

A kind of power-saving method of high-pressure sodium lamp

Technical field

The present invention relates to the city illumination field, particularly relate to the power-saving method of high-pressure sodium lamp.

Background technology

China's city illumination electric light source mainly is high intensity discharge lamps such as high-pressure sodium lamp, in low-voltage network, extensively adopts the supply power mode of " low capacity, densely covered point, short radius " at present, and this supply power mode can obviously reduce the low-voltage distribution network line loss.The important measures of this supply power mode are implemented in the use of single-phase transformer just, and single phase transformer and single-phase power transformation, distribution technique have been listed in the power-saving technique of China's keypoint recommendation.The single-phase transformer main advantage of powering is at single-phase load.The city illumination load just in time is a single-phase load, is particularly suitable for adopting the single-phase transformer power supply.

At present, the method for high-pressure sodium lamp economize on electricity both at home and abroad mainly is the electromagnetic type voltage-reducing and electricity-saving.Promptly adopting with many tapped transformers is the intelligent control technology of core, the dynamic and intelligent management of realize satisfying the need modulating voltage and illumination, i.e. TPO.TPO not only economizes on electricity, and prolongs street lamp useful life, saves maintenance cost TPO in Germany, and the U.S. obtains government and supports energetically and promote.The GGDZ illumination voltage stabilizing economize on electricity cabinet of Shanghai Pan Deng company development, be with compensator transformer, voltage regulating transformer, Regulation Control mechanism, main circuit, control circuit, the time 6 illuminating energy-saving products of new generation that technical unit is formed such as control circuit.The NE device that Spain produces (ILUEST illumination voltage stabilizing dimmer) is the energy-conservation intelligent pressure regulating supply unit that is exclusively used in gaseous discharge lamp, and it is to be core with tapped transformer more than, the power supply the complete sets of equipment of distribution sub-controller and voltage stabilizing.According to control command, can be depressured to energy-saving run voltage automatically.But the not enough following points of electromagnetic type voltage-reducing and electricity-saving method: 1, after each transformer, all will connect an autotransformer or compensator transformer or voltage regulating transformer, increase input and cost; 2, the control of electromagnetic type voltage-reducing and electricity-saving is complicated, is controlled by electronic computer in good time

Summary of the invention

The object of the present invention is to provide a kind of investment little, during electricity-saving appliance work, no harmonic wave does not have and impacts, to the power-saving method of the free of contamination high-pressure sodium lamp of electrical network.

The objective of the invention is to be achieved through the following technical solutions: a kind of power-saving method of high-pressure sodium lamp, it is characterized in that: between the phase line of Circuit Fault on Secondary Transformer and zero line, insert high-pressure sodium lamp, high-pressure sodium lamp is in parallel between same phase line, the shared zero line of the phase line of Circuit Fault on Secondary Transformer; On two phase lines and zero line, be connected to an A.C. contactor main contacts respectively, before the A.C. contactor main contacts that two phase lines connect, be connected to an electronic controller, a light-sensitive realy, three A.C. contactors, auxiliary relay, the time relay are arranged in the described electronic controller; The same day will be in the time of will deceiving, light-sensitive realy action in the electronic controller, make contact closure, the coil of A.C. contactor, auxiliary relay, the time relay simultaneously electric, A.C. contactor main contacts closure simultaneously, to the time of setting in evening, the break contact that the time relay can disconnect time-delay disconnects, and the auxiliary relay contact disconnects, and the A.C. contactor main contacts on the zero line disconnects, cut off zero line, lamp is transformed into the back of connecting in twos automatically by the line power voltage supply.

Described a plurality of single-phase transformer primary side alternately inserts between the two-phase in the power supply three-phase.

Operation principle is: the same day will be in the time of will deceiving, light-sensitive realy action in the electronic controller, after the photoelectric relay action, the make contact closure of photoelectric relay, A.C. contactor, auxiliary relay, the coil of the time relay are simultaneously, while A.C. contactor main contacts closure, the 220V rated voltage power supply that each high-pressure sodium lamp is provided by phase line and zero line.Because the work of the time relay, to the time of setting in evening, as 11 o'clock, the break contact that the time relay can disconnect time-delay disconnected, and the auxiliary relay contact disconnects, A.C. contactor main contacts on the zero line disconnects, cut off zero line, lamp is transformed into the back of connecting in twos automatically by the line power voltage supply, and promptly the supply power voltage of each lamp is automatically converted to half of line voltage by rated voltage 220V, the line voltage of Circuit Fault on Secondary Transformer is 400V in the time after midnight, and the supply power voltage of every high-pressure sodium lamp is 200V.

Like this, the high-pressure sodium lamp of city illumination from beginning to late 11 o'clock at nightfall, when the wagon flow stream of people is many, by the power supply of 220V rated voltage, guarantees the illumination and the brightness of road; After 11 o'clock evenings, the automobile on the urban road has lacked, and the pedestrian is also few, and this method will be reduced to the supply power voltage of lamp the optimum voltage 200V of evening lamp automatically, under the situation that guarantees urban road lighting condition in the late into the night, and energy-conservation electric energy.

Step-down power supply power savings of the present invention is obvious, and China's city street lamp surpasses 1,500 ten thousand, and the power of every lamp is pressed 250W and calculated, and the road lighting power consumption is 3,750,000 kW.Through our test, power saving rate is 16% after the step-down.After the high-pressure sodium lamp evening lamp of city illumination was implemented, power saving rate calculated by 16%.From evening 11 up to 5 o'clock mornings, street lamp step-down every day work 6 hours, year the economize on electricity can reach 3,600,000,000 kWh.

In addition, can also save the city street lamp construction fund.Under the normal condition, the electricity charge of street lamp spendings accounts for more than 60% of total maintenance expense, and renewal costs such as bulb and relevant ballast thereof, trigger also are bigger expenditures, and the rising of voltage will be shortened the useful life of bulb and annex thereof.In the time after midnight, reduce the voltage (reducing the luminous flux of light source synchronously) that is added on the light fixture, the luminous flux of street lamp all is reduced to identical level, like this, both guaranteed functional (road surface mean flow rate, road surface luminance uniformity, the average level illumination) of road lighting, saves energy again can also prolong useful life of light fixture.

The present invention reduces to the supply power voltage of lamp the optimum voltage 200V of evening lamp automatically by electronic controller, and it is little to have an investment, and during electricity-saving appliance work, no harmonic wave does not have impact, to the free of contamination advantage of electrical network.

Description of drawings:

Fig. 1 is a high-pressure sodium lamp voltage-reducing and electricity-saving main wiring diagram of the present invention;

Fig. 2 is the control circuit figure of electronic controller of the present invention.

Embodiment

The invention will be further described according to specific embodiments and the drawings below:

As can be seen from Figure 1, the present invention alternately inserts a plurality of single-phase transformer primary sides between the two-phase in the power supply three-phase, makes load balancing; Insert high-pressure sodium lamp between the phase line of Circuit Fault on Secondary Transformer and the zero line, high-pressure sodium lamp is in parallel between same phase line, the shared zero line of the phase line of Circuit Fault on Secondary Transformer, two phase lines are connected to an A.C. contactor KM1 main contacts respectively, and zero line is connected to A.C. contactor KM2 main contacts.

From the control circuit figure of Fig. 2 electronic controller as can be known, before 2 lines of electronic controller are connected on the A.C. contactor KM1 main contacts that phase line connects among Fig. 1, a light-sensitive realy is arranged, A.C. contactor KM1, KM2 in the electronic controller, auxiliary relay KA, time relay KT.

The course of work is: the same day will be in the time of will deceiving, light-sensitive realy action in the electronic controller, after the photoelectric relay action, the make contact K closure of photoelectric relay, A.C. contactor KM1, KM2, auxiliary relay KA, the coil of time relay KT are simultaneously, while KM1, KM2 main contacts closure, the 220V rated voltage power supply that each high-pressure sodium lamp is provided by phase line and zero line.Because the work of time relay KT, to the time of setting in evening, as 11 o'clock, the break contact KT that time relay KT can disconnect time-delay disconnects, auxiliary relay KA dead electricity, auxiliary relay KA contact disconnects, A.C. contactor KM2 contact disconnects, cut off zero line, lamp is transformed into the back of connecting in twos automatically by the line power voltage supply, the supply power voltage that is each lamp is automatically converted to half of line voltage by rated voltage 220V, and the line voltage of Circuit Fault on Secondary Transformer is 400V in the time after midnight, and the supply power voltage of every high-pressure sodium lamp is 200V.

Claims

1. the power-saving method of a high-pressure sodium lamp is characterized in that: insert high-pressure sodium lamp between the phase line of Circuit Fault on Secondary Transformer and zero line, high-pressure sodium lamp is in parallel between same phase line, the shared zero line of the phase line of Circuit Fault on Secondary Transformer; On two phase lines and zero line, be connected to an A.C. contactor main contacts respectively, before the A.C. contactor main contacts that two phase lines connect, be connected to an electronic controller, a light-sensitive realy, A.C. contactor, auxiliary relay, the time relay are arranged in the described electronic controller; The same day will be in the time of will deceiving, light-sensitive realy action in the electronic controller, make contact closure, the coil of A.C. contactor, auxiliary relay, the time relay simultaneously electric, A.C. contactor main contacts closure simultaneously, to the time of setting in evening, the break contact that the time relay can disconnect time-delay disconnects, and the auxiliary relay contact disconnects, and the A.C. contactor main contacts on the zero line disconnects, cut off zero line, lamp is transformed into the back of connecting in twos automatically by the line power voltage supply.

2. the power-saving method of high-pressure sodium lamp according to claim 1 is characterized in that: described a plurality of single-phase transformer primary sides alternately insert between the two-phase in the power supply three-phase.