CN101346028B - Intelligent electricity-saving optimal control method - Google Patents
Intelligent electricity-saving optimal control method Download PDFInfo
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- CN101346028B CN101346028B CN2008100421518A CN200810042151A CN101346028B CN 101346028 B CN101346028 B CN 101346028B CN 2008100421518 A CN2008100421518 A CN 2008100421518A CN 200810042151 A CN200810042151 A CN 200810042151A CN 101346028 B CN101346028 B CN 101346028B
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Abstract
The invention provides an intelligent electricity saving optimal control method, belonging to the energy saving technology field. The invention determines gas discharge road lamp input voltage, that is AC output voltage target value, through a gas discharge lamp safety control four side graph made up of a gas discharge lamp lowest lamp voltage-power characteristic curve, a gas discharge lamp highest lamp voltage-power characteristic curve, a gas discharge lamp highest lime power curve and a gas discharge lamp lowest limit power curve, a ballast characteristic curve and the selected electricity saving level to keep the gas discharge road lamp in optimal control state through the whole course. The method in the invention can turn on/off road lamp according to the natural illumination automatically, saves the electricity in 20-45% while insuring driving safety at night.
Description
Technical field
What the present invention relates to is a kind of autocontrol method of field of energy-saving technology, specifically is a kind of intelligent electricity-saving optimal control method.
Background technology
As everyone knows, the energy of the earth and resource are limited, and in order to ensure economic sustainable growth to greatest extent, people are when actively seeking new forms of energy and exploitation regenerative resource, constantly can not loosen the saving to the existing energy, this is the subject under discussion and the common recognition of whole mankind's common concern.Utilize the energy in order effectively and to greatest extent to save, the most basic way is the application of advanced science and technology.Wherein, how to make gaseous discharge lamp reach effective use and energy-conservation effect is exactly a current very outstanding and urgent technical assignment, because utilize the superior luminous flux characteristic of gaseous discharge lamp to use as street lamp, big various places, the town and country road that spreaded all over of its quantity.When gaseous discharge lamp during as road lighting, under the situation that guarantees effective lighting, how to realize economizing on electricity to greatest extent, this meaning to national society's economic development is self-evident, yet, make gaseous discharge lamp realize economize on electricity truly, still exist many technical barriers up to now.With regard to current adopted many technology, put it briefly, be to utilize dropping equipment or similar technology to realize illuminating energy-saving basically, this is the technology mistaken ideas of gaseous discharge lamp illuminating energy-saving.
Find by prior art documents, Zhang Wankui, fourth jump and water: " technical characteristic of high-pressure sodium lamp and voltage-reducing and electricity-saving are used " (" illuminating engineering journal " the 4th phase in 2005), this article " is started with from the technical performance of high-pressure sodium lamp; analyze the feasibility of its step-down power supply energy-saving ", " lighting fades to half automatic conversion decompression mode of line voltage from bearing phase voltage, thereby realizes optimum road illuminating energy-saving pattern " proposed.Above-mentioned document obviously is inclined to one side face to the technical characteristic analysis of one of gaseous discharge lamp high-pressure sodium lamp, only consider that high-pressure sodium lamp is in following volt-ampere of characteristic negative slope character of discharge condition, and do not consider its power characteristic, power characteristic when more not considering its subsidiary ballast, so " economize on electricity " mode is to sacrifice the pure commerciality economize on electricity that gaseous discharge lamp effective lighting and normal useful life are cost, being theoretically unsound, is unscientific.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art and defective, a kind of intelligent electricity-saving optimal control method is provided, make it can under the effective lighting prerequisite, realize the optimal effectiveness of efficient, the safety electricity-saving of gas discharge street lamp, below will connect the gas discharge street lamp that is constituted behind ballast and the trigger and abbreviate the gas discharge street lamp as by gaseous discharge lamp.
The present invention is achieved by the following technical solutions, may further comprise the steps:
(1) on same highway section, selects the gaseous discharge lamp of same technical characteristic specification for use;
(2) according to the design modulating voltage U of gaseous discharge lamp in the selected gas discharge street lamp
lWith design lamp power N
l, calculate the operating current I of gaseous discharge lamp under design condition
l
(3) according to the operating current I of gaseous discharge lamp under design condition
lWith the working impedance Z of the ballast that connects with it under design condition
l, calculate the input voltage of gaseous discharge lamp under design condition
(4) by the minimum modulating voltage of gaseous discharge lamp-power characteristic N=kU+N
Bs, the highest modulating voltage of gaseous discharge lamp-power characteristic N=kU+N
Bg, gaseous discharge lamp maximum allowed power line N=N
g, gaseous discharge lamp least restrictive power line N=N
sConstitute gaseous discharge lamp economize on electricity security control four edge graphs, N
Bs, N
BgBe respectively minimum modulating voltage-power characteristic of gaseous discharge lamp and the intercept of the highest modulating voltage-power characteristic on lamp power coordinate N;
(5) set up the modulating voltage-power characteristic collection of gaseous discharge lamp and modulating voltage-power characteristic collection and connect ballast after modulating voltage-power characteristic collection database;
(6) select the horizontal Q of economize on electricity;
(7) according to the horizontal Q of economize on electricity, choose the ballast characteristic curve, obtain target lamp voltage, and then the input voltage of definite gas discharge street lamp, i.e. ac output voltage desired value;
(8) the gas discharge street lamp enters omnidistance optimal control state as controlled device, comprising: street lamp cold start-up control, electricity saving of road lamp optimal control, street lamp warm start control, street lamp closing control;
(9) street lamp cold start-up control, when entering night from daytime, determine the best time of street lamp cold start-up according to sky illuminance, spring, summer, autumn and winter no matter, all can under only ambient brightness, open street lighting, both guaranteed road traffic safety, and saved electric energy again to greatest extent, the abnormality of just thoroughly stopping " daytime bright lamp, night do not work " in the opening time section takes place;
(10) electricity saving of road lamp optimal control, concrete steps are as follows:
1. enter night illumination, online detection street lamp working status parameter signal comprises: AC-input voltage, electric current, ac output voltage, electronic power switch device temperature, sky illuminance;
2. by the horizontal Q of economize on electricity, determine lamp target power N
Q
3. repeat (7) step, under the ac output voltage desired value, the gas discharge street lamp can utilize the just resistance current limiting characteristic of gaseous discharge lamp " volt-peace " negative resistance charactertistic and ballast to form impedance " complementation ", makes gaseous discharge lamp work near can being stabilized in the lamp target power all the time;
4. by online actual measurement, ac output voltage is the value of departing from objectives in a single day, and measured signal is treated, after the decision-making, and system sends the voltage-regulation instruction to contactless voltage regulator, changes ac output voltage and makes it come back to desired value;
5. calculate power savings, comprise that power saving rate is energy-conservation with accumulative total;
6. export street lamp work state information and power savings data;
(11) street lamp warm start control, interrupt illumination because of power network line fault or artificial origin cause street lamp night, after circuit restores electricity, the technology of the present invention can be selected the best time of warm start simultaneously according to the glass bulb temperature of sky illuminance and gaseous discharge lamp, therefore, the technical performance that not only can ensure street lamp is not damaged because of restarting under hot state, normally can not closed the street lamp erroneous judgement daytime temporarily yet and be " accident interruption ", therefore make street lamp can be operated in good working environment, guarantee to obtain its useful life to safeguard;
(12) street lamp closing control, when entering daytime from night, determine the best time that street lamp cuts out according to sky illuminance, spring, summer, autumn and winter no matter, all can throw light on by closed circuit lamp, both guarantee road traffic safety, save electric energy again to greatest extent in only ambient brightness ShiShimonoseki, equally from the shut-in time section, the abnormality of thoroughly stopping " daytime bright lamp, night do not work " takes place.
The present invention has following beneficial effect: guarantee gaseous discharge lamp realization science economize on electricity 20～45% under standard lamp voltage; The gaseous discharge lamp luminous flux is not less than 90%; Can be according to natural daylight illumination, automatically, science, On/Off street lamp reasonably, save the electrical network power consumption, and guaranteed driving at night safety; Guaranteed the safe in utilization of gaseous discharge lamp under the warm start state; Because avoided gaseous discharge lamp to exist〉220V or＜work on the voltage of 180V, therefore can from gaseous discharge lamp life prediction data, confirm to obtain its useful life prolongation.
Description of drawings
Fig. 1 constitutes schematic diagram for the gaseous discharge lamp power supply main circuit that the embodiment of the invention adopts
Among the figure: exchange input filter 1, contactless voltage regulator 2, exchange output filter 3, gaseous discharge lamp 4, ballast 5 and trigger 6, AC-input voltage transducer 7, current sensor 8, ac output voltage transducer 9, temperature sensor 10, illuminance sensor 11.
Fig. 2 is an embodiment of the invention prosecution flow chart
Fig. 3 is embodiment of the invention economize on electricity optimal control quadrangle figure
Among the figure: minimum modulating voltage-power characteristic 12, the highest modulating voltage-power characteristic 13, the highest permission lamp power line 14, lower limit lamp power line 15, constitute electricity saving of road lamp optimal control quadrangle figure, and ballast characteristic curve collection 16.
Fig. 4 is embodiment of the invention economize on electricity optimal control decision flow diagram
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, the gaseous discharge lamp power supply main circuit that present embodiment adopts comprises: exchange input filter 1, contactless voltage regulator 2, exchange output filter 3, gaseous discharge lamp 4, ballast 5, trigger 6, AC-input voltage transducer 7, current sensor 8, ac output voltage transducer 9, temperature sensor 10, illuminance sensor 11.The input port that exchanges input filter 1 connects 50Hz single phase alternating current power supply output port, the output port that exchanges input filter 1 connects the input port of contactless voltage regulator 2, and the output port of contactless voltage regulator 2 connects the input port that exchanges output filter 3.Exchange input filter 1 and adopt Γ shape circuit, promptly form by a 50Hz low pass inductance and an electric capacity.Exchange output filter 3 and adopt two ∏ shape circuit, promptly, filter circuit is by a 1kHz high resistant inductance, a 50Hz low pass inductance and three electric capacity are formed, the output phase line of the contactless voltage regulator 2 of input termination of 50Hz low pass inductance, the input of the output termination 1kHz high resistant inductance of 50Hz low pass inductance, first electrode of the output termination gaseous discharge lamp 4 of 1kHz high resistant inductance, the input of one termination 50Hz low pass inductance of first electric capacity, another termination AC power zero line of first electric capacity, one end of second electric capacity is connected with the output of 50Hz low pass inductance and the input of 1kHz high resistant inductance, another termination AC power zero line of second electric capacity, the output of one termination 1kHz high resistant inductance of the 3rd electric capacity, another termination AC power zero line of the 3rd electric capacity, promptly, first electric capacity is connected to the input port that exchanges output filter, second electric capacity is parallel to the centre that exchanges the two ∏ shape circuit of output filter, the input port parallel connection of the 3rd electric capacity and output port that exchanges output filter and gas discharge street lamp 4.Second electrode of gaseous discharge lamp 4 connects first termination of ballast 5, second termination of ballast 5 is connected to the zero line side that exchanges output filter 3, first termination of trigger 6 is connected with first electrode of gaseous discharge lamp 4, and second termination of trigger 6 is connected with second electrode of gaseous discharge lamp 4.The input of AC-input voltage transducer 7 and the input port that exchanges input filter 1 mutually and connect, the output of AC-input voltage transducer 7 is connected with the input port of first signal sampling channel; The input induction coil of current sensor 8 is placed on the AC power phase line, and its output port is connected with the secondary signal acquisition channel; The input port of ac output voltage transducer 9 is connected with the output port that exchanges output filter 3, and its output port is connected with the input port of the 3rd signal sampling channel; The thermal resistance thermal sensitive piece of temperature sensor 10 sticks on the fin of electronic power switch switching device in the contactless voltage regulator, and its output port is connected with the input port of the 4th signal sampling channel; The illuminance sensing chip of illuminance sensor 11 is installed vertically upward, and positive clear stops, can correctly respond to sky illuminance, and its output port is connected with the input port of the 5th signal sampling channel.The input port that exchanges input filter 1 is at first accepted the power supply of 50Hz single phase alternating current power supply, in the spuious high-frequency signal of filtering from electrical network, prevents that the harmonic components in institute's output AC signal feeds back to electrical network after the voltage-regulation.Deliver to contactless voltage regulator 2 through exchanging input filter 1 filtered ac supply signal, the start pulse signal that contactless voltage regulator 2 is received according to the control input end mouth determines that the conducting state of electronic power switch wherein is to regulate the magnitude of voltage of its output.Exchange the output filter 3 block electrons triggers pulse high-voltage that moment produced before gaseous discharge lamp 4 starts to exchanging " recoil " of regulating the power supply input circuit; the high voltage induction electromotive force that also can intercept ballast is to exchanging the influence of regulating the power supply input circuit; therefore play the effect of electronic power switch device safety in the contactless voltage regulator 2 of protection, and prevent the pollution of pulse high-voltage electrical network.
The gas discharge street lamp state prosecution hardware system that present embodiment adopts comprises: power supply main circuit, signal transducer, state detector, signal processor, Control Driver, GPRS long distance control system.Signal transducer comprises: AC-input voltage, electric current, temperature, illuminance, the ac output voltage transducer, the signal output port of transducer is connected with first to the 5th signal sampling channel of the signal input interface of state detector, the output interface of state detector is connected to the signal input interface of signal processor, the control output interface of signal processor is connected to the input interface of Control Driver, the RS232 serial line interface of the remote terminal GPRS module in the RS232 serial line interface of signal processor and the GPRS long distance control system is connected, and the output interface of Control Driver is connected with the control input interface of power supply main circuit.The power supply main circuit is accepted the energy source of 50Hz single phase alternating current power supply power supply as gaseous discharge lamp.Transfer to signal processor processes, analysis after AC-input voltage, electric current, temperature, illuminance, the preliminary treatment of ac output voltage signal process state detector, signal processor is made control decision to the Control Driver sending controling instruction according to the signal analysis result, and Control Driver converts control command to start pulse signal and exports the control input interface of power supply in the main circuit in order to regulate the voltage output of power supply main circuit.To the power state information and the control decision thereof of main circuit of signal processor carried out information interaction by RS232 serial line interface and GPRS long distance control system.Signal processor passes through the processing and the analysis of science to the information data that state detector provided, just export the control corresponding instruction then, therefore, can make gaseous discharge lamp is warm start under cold start-up under the most rational condition of work and safest condition of work all the time, the power output that gaseous discharge lamp is in all the time accept in the optimal control district under optimal lamp power voltage supply and the highest electro-optical efficiency, and then guarantee: the optimal illumination effect of gaseous discharge lamp and safe operating life condition really reach the scientific goal of electricity saving and energy saving.
As shown in Figure 2, present embodiment comprises two parts of gaseous discharge lamp operating state Detection ﹠ Controling.Wherein, detected parameter comprises: AC-input voltage, electric current, ac output voltage, electronic power switch device temperature, sky illuminance; Control mode comprises: the cold start-up of gas discharge street lamp, the warm start of gas discharge street lamp, the optimum economize on electricity control of gas discharge street lamp, gas discharge street lamp closing control.
Above-mentioned hardware system is installed in the control cubicle, can single phase power supply, and also can three phase supply.The former is called single-phase street lamp intelligent energy-saving controller, single-phase input single channel output, and the input socket of control cubicle connects single phase alternating current power supply output, and the accessory power outlet of control cubicle is the input port that the ac output end mouth connects one group of gas discharge street lamp; The latter is called three-phase street lamp intelligent energy-saving controller, three-phase is imported three tunnel outputs, the input socket of control cubicle connects three-phase alternating-current supply output, the accessory power outlet of control cubicle divides three road ac output end mouths to connect the input port of three groups of gas discharge street lamps respectively, the circuit topology of three tunnel interchange outputs is just the same, every road output institute can " traction " the street lamp load definite by every road output-current rating, as certain road output rated current is 200A, every gas discharge street lamp rated power is 250W, and then this road output at most can " traction " 150.
Set forth the concrete steps of intelligent electricity-saving optimal control method below in conjunction with embodiment:
(1) all street lamps select for use the high-pressure sodium lamp+ballast+trigger with same technical characteristic specification as the gas discharge street lamp;
(2) according to the design modulating voltage U of high-pressure sodium lamp
lWith design lamp power N
l, calculate the operating current I of high-pressure sodium lamp under design condition
l,
(3) according to the operating current I of high-pressure sodium lamp under design condition
lWith the working impedance Z of the ballast that connects with it under design condition
l, calculate the input voltage of gas discharge street lamp under design condition of high-pressure sodium lamp
, i.e. ac output voltage,
(4) by the minimum modulating voltage of high-pressure sodium lamp-power characteristic N=kU+N
Bs, the highest modulating voltage of high-pressure sodium lamp-power characteristic N=kU+N
Bg, high-pressure sodium lamp maximum allowed power line N=N
g, high-pressure sodium lamp least restrictive power line N=N
sConstitute high-pressure sodium lamp economize on electricity security control four edge graphs, as shown in Figure 3, four curves 12,13,14,15 constitute four edge graphs, mercury is not only arranged in the high-pressure sodium lamp, also be filled with sodium, at the lamp duration of work, sodium and mercury are housed in the cold junction part of discharge tube with the form of liquid sodium mercury vapour, the relation of the modulating voltage of high-pressure sodium lamp and lamp power is based on and is comprising excessive sodium mercury vapour in the discharge tube and cause, have only the mercury and the sodium of part to form vapour pressure, the height of vapour pressure also promptly is reflected on the modulating voltage, it depends on the temperature that discharge tube " cold junction " is located, the variation of cold junction temperature causes the variation of vapour pressure, produce the variation of modulating voltage, thereby the variation of lamp power takes place, that is to say, high-pressure sodium lamp is at life period, lamp power changes along with the variation of modulating voltage, but the close linear relationship that is similar at modulating voltage in the certain power scope and lamp power, when modulating voltage equals design voltage, lamp power will reach design object power, to same model, the lamp of equal-wattage has approximately parallel characteristic curve, for those lamp of higher modulating voltage is arranged, the steepness of its characteristic curve slope can reduce, the limit of high-pressure sodium lamp maximum power is being represented on the top of quadrangle figure, the limit of maximum power depends on the maximum admissible working temperature of discharge tube, the maximum power line is arranged on usually above about 20～30% of bulb nominal power, the limit of high-pressure sodium lamp minimum power is being represented in the bottom of quadrangle figure, the minimum power line is set to guarantee to satisfy the temperature-raising characteristic of bulb, the stability of bulb work, the delivery efficiency of acceptable light, and photochromic performance etc., the minimum power line be arranged on usually be lower than beacon light claim power 20～30% near, the minimum lamp pressure-wire on the quadrangle figure left side is the modulation characteristic curve of the acceptable minimum lamp voltage of lamp, it is minimum modulating voltage-power characteristic, the minimum lamp voltage of admitting for the high-pressure sodium lamp of every kind of specification all has been defined in the performance parameter table of lamp, modulation characteristic curve when the maximum lamp pressure-wire on quadrangle figure the right is expressed as the admissible the highest modulating voltage of lamp, i.e. the highest modulating voltage-power characteristic, this curve has been considered the maximum lamp voltage that may occur in the lamp, the rising of lamp life period modulating voltage, the rising of modulating voltage in the sealed type light fixture, and other changing factors, if modulating voltage exceeds outside the maximum lamp voltage curve, at this moment ballast can not guarantee that lamp can stably or constantly work, therefore, above-mentioned quadrangle figure can be used as a standard of high-pressure sodium lamp work system, it has comprised the requirement of lamp and ballast, has also considered the influence of other factors;
(5) set up the modulating voltage-power characteristic collection database of gas discharge street lamp, for a specific modulation characteristic curve, can be by changing the impedance of supply voltage or ballast within the specific limits, thus the voltage and the power that change lamp obtain one group of approximately parallel characteristic curve, i.e. N=kU+N
b, along with N
bThe difference of value changes and forms one group of modulating voltage-lamp power characteristic collection, when high-pressure sodium lamp connects ballast running hours under constant input voltage, the variation of modulating voltage and lamp power can followed the characteristic curve of ballast, be called for short the ballast characteristic curve, 16 curve set as shown in Figure 3, this curve negotiating raises the cold junction temperature of discharge tube to change modulating voltage and lamp power and obtains, when mains voltage variations, can obtain one group of ballast characteristic curve, trial curve can use curve-fitting method to obtain Analytical Expression N=f (U), the ballast of correct design, its characteristic curve drops in economize on electricity security control four edge graphs, can ask for lamp power maximum by first derivative by the characteristic continuation property of ballast, and deposit in the database together with corresponding ballast characteristic curve, therefore in database, lamp power maximum and ballast characteristic curve have been set up one-to-one relationship, in the using system of high-pressure sodium lamp, exist the variation of various factors, as: the variation of supply voltage, lamp behaviour over time, the variation of light fixture inner reflector efficient, the variation of environment for use etc., in the international standard of high-pressure sodium lamp with the form of four edge graphs of (4) step, require ballast can guarantee that lamp is under the situation of life period and any dynamic change, its electric property parameter variation is limited in the above-mentioned particular range, and quadrangle figure has stipulated the condition of ballast design synoptically:
1. the characteristic curve of ballast should intersect with two modulating voltage lines, and remains on the limit line N=N of lamp power at the life period of lamp
gWith N=N
sBetween;
2. the design of ballast should make lamp not only at rated supply voltage U
lFollowing, and at admissible minimum power supply voltage,
Or maximum power supply voltage
, be always operating in the zone of quadrangle figure down, that is;
3. Zui Jia ballast characteristic curve must be one had not both had flex point, had not had a continuous smooth curve of break yet, and only had an extreme point that is between minimum and the maximum voltage curve, as: the N that M is ordered
l, or the H N of ordering
Ls, the L N of ordering
LgDeng.
(6) select the horizontal Q of economize on electricity, Q can get 0～45%, as: Q=25%=0.25;
(7) according to the horizontal Q of economize on electricity, choose the ballast characteristic curve, obtain the lamp target voltage, and then the input voltage of definite gas discharge street lamp, i.e. ac output voltage desired value, concrete grammar:
1. by (1-Q) * N
lAsk for the lamp controlled target power N of economize on electricity level correspondence
Q,
2. with N
QAs the characteristic lamp target power of ballast to be selected maximum, from database, obtain corresponding modulating voltage U value, i.e. U=U
Q,
3. by N
QWith U
QAsk for I
Q,
4. with U
QWith I
QSubstitution
Try to achieve the street lamp input voltage
, i.e. ac output voltage, and be converted into voltage effective value U
Lm, U
LmBe the ac output voltage desired value;
(8) enter omnidistance optimal control state, comprising: street lamp cold start-up control, electricity saving of road lamp optimal control, street lamp warm start control, street lamp closing control;
(9) street lamp cold start-up control when entering night from daytime, is determined the best time of street lamp cold start-up according to sky illuminance, as L＜L
0The time, open street lighting, L, L
0Be respectively current actual measurement sky illuminance and illuminance threshold value, ambient brightness is only just opened street lamp when being lower than this threshold value, therefore no matter spring, summer, autumn and winter, thick weather still appears suddenly, the present invention all can both guarantee road traffic safety under only ambient brightness, save electric energy again to greatest extent;
(10) electricity saving of road lamp optimal control, concrete steps are as follows:
1. enter night illumination, online detection street lamp working status parameter signal comprises: AC-input voltage, electric current, ac output voltage, electronic power switch device temperature, sky illuminance;
2. by the horizontal Q of economize on electricity, determine lamp target power N
Q, as Q=0.25, N then
Q=0.75Nl, promptly working control lamp power is 75% of design lamp power;
3. repeat in (7) step 1.～4., when the street lamp stabilized input voltage in U
LmThe time and since high-pressure sodium lamp " volt-peace " negative resistance charactertistic of its discharge process and ballast just hinder the impedance that current limiting characteristic have just in time formed both " complementation ", so make high-pressure sodium lamp can be stabilized in lamp target voltage U all the time
QWith N such as target power such as grade
QCorresponding coordinate points Q (U
Q, N
Q) near work;
4. by online detection, in a single day ac output voltage departs from U
Lm, tested voltage system after signal processing, decision-making sends the voltage-regulation instruction to contactless voltage regulator, by output controlled quentity controlled variable Δ U
LmChange U
LmValue, make gas discharge street lamp input voltage come back to target voltage U
Lm
5. calculate power savings
Power saving rate:
Accumulative total is energy-conservation:
Here, U
mBe the single-phase input voltage of AC power,
Be respectively corresponding lamp target power N
QDo not implement to economize on electricity the power-factor of load under the control, t is the fragmentary works time;
6. export street lamp work state information and power savings data
Street lamp work state information and power savings data can transfer to network monitoring center by long distance control system and use for remote monitoring and top management;
(11) street lamp warm start control, interrupt illumination because of power network line fault or artificial origin cause street lamp night, after circuit restored electricity, the technology of the present invention can be selected the best time of warm start according to the glass bulb temperature of sky illuminance and gaseous discharge lamp, and and if only if
The time, system just can send warm start control command, θ, θ to the gas discharge street lamp
0Be respectively the Current Temperatures and the warm start control temperature threshold thereof of electronic power switch, the latter has set up the thermodynamic relation with gaseous discharge lamp glass bulb chilling temperature by experiment, that is, in case θ＜θ
0Gaseous discharge lamp glass bulb temperature has also dropped to the temperature limit that allows warm start, therefore, the technical performance that not only can ensure street lamp is not damaged because of restarting under hot state, normally can not closed the street lamp erroneous judgement daytime temporarily yet and be " accident interruption ", therefore make street lamp can be operated in good working environment, guarantee to obtain its useful life to safeguard;
(12) street lamp closing control is when entering daytime from night, as L 〉=L
0The time, street lamp cuts out, therefore, spring, summer, autumn and winter no matter, all can closed circuit lamp illumination in only ambient brightness ShiShimonoseki, both guaranteed road traffic safety, save electric energy again to greatest extent.
Embodiment confirms that the present invention has following beneficial effect:
1. since street lamp since 10 o'clock of night electrical network enter power supply paddy section, voltage is than exceeding 10～20% for level section, if the unreal electricity-saving intelligent of executing of street lamp is controlled, generally speaking, street lamp is all worked under the state that is higher than lamp design power 10～20%, therefore, the actual power savings after enforcement the technology of the present invention can reach 20～45%;
2. under the situation of implementing intelligent energy-saving, the high-pressure sodium lamp luminous flux is not less than 90%;
3. can be according to natural daylight illumination, automatically, science, On/Off street lamp reasonably, save the electrical network power consumption, and guaranteed driving at night safety;
4. guaranteed the safe in utilization of gaseous discharge lamp under the warm start state;
5. because avoided gaseous discharge lamp to exist〉220V or＜work on the voltage of 180V, therefore can from gaseous discharge lamp life prediction data, confirm to obtain its useful life prolongation.
Claims (9)
1. an intelligent electricity-saving optimal control method is characterized in that, may further comprise the steps:
(1) on same highway section, selects the gaseous discharge lamp of same technical characteristic specification for use;
(2) according to the design modulating voltage U of gaseous discharge lamp in the selected gas discharge street lamp
lWith design lamp power N
l, calculate the operating current I of gaseous discharge lamp under design condition
l
(3) according to the operating current I of gaseous discharge lamp under design condition
lWith the working impedance Z of the ballast that connects with it under design condition
l, calculate the input voltage of gaseous discharge lamp under design condition
(4) constitute gaseous discharge lamp economize on electricity security control four edge graphs by the minimum modulating voltage-power characteristic of gaseous discharge lamp, the highest modulating voltage-power characteristic of gaseous discharge lamp, gaseous discharge lamp maximum allowed power line, gaseous discharge lamp least restrictive power line;
(5) set up the modulating voltage-power characteristic collection of gaseous discharge lamp and modulating voltage-power characteristic collection and connect ballast after modulating voltage-power characteristic be ballast characteristic curve collection database;
(6) select the horizontal Q of economize on electricity;
(7) according to the horizontal Q of economize on electricity, choose the ballast characteristic curve, obtain target lamp voltage, and then the input voltage of definite gas discharge street lamp, i.e. ac output voltage desired value;
(8) the gas discharge street lamp enters omnidistance optimal control state as controlled device, comprising: street lamp cold start-up control, electricity saving of road lamp optimal control, street lamp warm start control, street lamp closing control;
(9) street lamp cold start-up control when entering night from daytime, is determined the best time of street lamp cold start-up according to sky illuminance;
(10) electricity saving of road lamp optimal control;
(11) street lamp warm start control, cause street lamp to interrupt illumination because of power network line fault or artificial origin night, after circuit restores electricity, can select the best time of warm start simultaneously according to the glass bulb temperature of sky illuminance and gaseous discharge lamp;
(12) street lamp closing control when entering daytime from night, is determined the best time that street lamp cuts out according to sky illuminance.
2. intelligent electricity-saving optimal control method according to claim 1 is characterized in that, in the step (4), described gaseous discharge lamp economize on electricity security control four edge graphs are specially: by the minimum modulating voltage of gaseous discharge lamp-power characteristic N=kU+N
Bs, the highest modulating voltage of gaseous discharge lamp-power characteristic N=kU+N
Bg, gaseous discharge lamp maximum allowed power line N=N
g, gaseous discharge lamp least restrictive power line N=N
sConstitute gaseous discharge lamp economize on electricity security control four edge graphs, the limit of gaseous discharge lamp maximum power is being represented on the top of quadrangle figure, the limit of maximum power depends on the maximum admissible working temperature of discharge tube, the limit of gaseous discharge lamp minimum power is being represented in the bottom of quadrangle figure, the minimum power line is set to guarantee to satisfy the temperature-raising characteristic of bulb, the stability of bulb work, the delivery efficiency of acceptable light, and photochromic performance, the minimum lamp pressure-wire on the quadrangle figure left side is the modulation characteristic curve of the acceptable minimum lamp voltage of lamp, it is minimum modulating voltage-power characteristic, modulation characteristic curve when the maximum lamp pressure-wire on quadrangle figure the right is expressed as the admissible the highest modulating voltage of lamp, i.e. the highest modulating voltage-power characteristic, this curve has been considered the maximum lamp voltage that may occur in the lamp, the rising of lamp life period modulating voltage, the ascending factor of modulating voltage in the sealed type light fixture, if modulating voltage exceeds outside the maximum lamp voltage curve, ballast can not guarantee that lamp can stably or constantly work.
3. intelligent electricity-saving optimal control method according to claim 2, it is characterized in that, the limit of described gaseous discharge lamp maximum power is arranged on above 20～30% of bulb nominal power, and gaseous discharge lamp minimum power line is arranged on and is lower than beacon light and claims 20～30% of power.
4. intelligent electricity-saving optimal control method according to claim 1, it is characterized in that, in the step (5), described characteristic curve collection, be specially: for a specific modulation characteristic curve, by the impedance of change supply voltage or ballast in setting range, thereby the voltage and the power that change lamp obtain one group of approximately parallel characteristic curve, i.e. N=kU+N
b, along with N
bThe variation of value forms one group of modulating voltage-lamp power characteristic collection, when gaseous discharge lamp connects ballast running hours under constant input voltage, the variation of modulating voltage and lamp power can followed the characteristic curve of ballast, this curve negotiating raises the cold junction temperature of discharge tube to change modulating voltage and lamp power and obtains, when mains voltage variations, obtain one group of ballast characteristic curve, and then can obtain Analytical Expression N=f (U) with curve-fitting method, the ballast of correct design, its characteristic curve drops in economize on electricity security control four edge graphs, can ask for lamp power maximum by first derivative by the characteristic continuation property of ballast, and deposit in the database together with corresponding ballast characteristic curve, therefore in database, lamp power maximum and ballast characteristic curve have been set up one-to-one relationship.
5. intelligent electricity-saving optimal control method according to claim 1, it is characterized in that, in the step (7), described ac output voltage desired value is specially: according to the horizontal Q of economize on electricity, choose the ballast characteristic curve, obtain the lamp target voltage, and then the input voltage of definite gas discharge street lamp, i.e. ac output voltage desired value is specially:
1. by (1-Q) * N
lAsk for the lamp controlled target power N of economize on electricity level correspondence
Q,
2. with N
QAs the characteristic lamp target power of ballast to be selected maximum, from database, obtain corresponding modulating voltage U value, i.e. U=U
Q,
3. by N
QWith U
QAsk for IQ,
4. with U
QWith I
QSubstitution
Try to achieve the street lamp input voltage
Be ac output voltage, and be converted into voltage effective value U
Lin, U
LinBe the ac output voltage desired value.
6. intelligent electricity-saving optimal control method according to claim 1 is characterized in that, in the step (9), described street lamp cold start-up control is meant: when entering night from daytime, determine the best time of street lamp cold start-up according to sky illuminance, as L＜L
0The time, open street lighting, L, L
0Be respectively current actual measurement sky illuminance and illuminance threshold value.
7. intelligent electricity-saving optimal control method according to claim 1 is characterized in that, in the step (10), described electricity saving of road lamp optimal control is specially:
1. enter night illumination, online detection street lamp working status parameter signal comprises: AC-input voltage, electric current, ac output voltage, electronic power switch device temperature, sky illuminance;
2. by the horizontal Q of economize on electricity, determine lamp target power N
Q
3. repeating step (7) ac output voltage desired value, when the street lamp stabilized input voltage in U
LinThe time, the gas discharge street lamp can be stabilized in lamp target voltage U all the time
QWith N such as target power such as grade
QCorresponding coordinate points Q (U
Q, N
Q) near work;
4. by online detection, in a single day ac output voltage departs from U
Lin, tested voltage system after signal processing, decision-making sends the voltage-regulation instruction to contactless voltage regulator, by output controlled quentity controlled variable Δ U
LinChange U
LinValue, make gas discharge street lamp input voltage come back to target voltage U
Lin
8. intelligent electricity-saving optimal control method according to claim 1 is characterized in that, in the step (11), described street lamp warm start control is specially: select the best time of warm start according to the glass bulb temperature of sky illuminance and gaseous discharge lamp, and if only if L＜L
0∧ θ＜θ
0The time, system just can send warm start control command, L, L to the gas discharge street lamp
0Be respectively current sky illuminance and street lamp and start desired illuminance threshold value, θ, θ
0Be respectively the Current Temperatures and the warm start control temperature threshold thereof of electronic power switch, in case θ＜θ
0, gaseous discharge lamp glass bulb temperature has also dropped to the temperature limit that allows warm start.
9. intelligent electricity-saving optimal control method according to claim 1 is characterized in that, in the step (12), described street lamp closing control is specially: when entering daytime from night, as L 〉=L
0The time, street lamp cuts out, L, L
0Be respectively current sky illuminance and street lamp and start desired illuminance threshold value.
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| CN105070159B (en) * | 2015-08-10 | 2017-10-03 | 广州供电局有限公司 | Apparatus for demonstrating and method that the quality of power supply influences on illuminator |
| WO2017124571A1 (en) * | 2016-01-24 | 2017-07-27 | 赵政荣 | Method for acquiring usage count of photosensitive street lamp technology and photosensitive street lamp |
| WO2017124570A1 (en) * | 2016-01-24 | 2017-07-27 | 赵政荣 | Method for adjusting street lamp brightness intensity, and photosensitive street lamp |
| CN108107266A (en) * | 2017-12-29 | 2018-06-01 | 江苏中科云控智能工业装备有限公司 | A kind of intelligent energy-saving rate tracking system and its method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2365510Y (en) * | 1999-01-19 | 2000-02-23 | 仇成多 | Self-control energy-saving road lamps |
| CN2692963Y (en) * | 2004-04-27 | 2005-04-13 | 刘方栋 | Power auto-lowering electronic ballast special for roadlamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2365510Y (en) * | 1999-01-19 | 2000-02-23 | 仇成多 | Self-control energy-saving road lamps |
| CN2692963Y (en) * | 2004-04-27 | 2005-04-13 | 刘方栋 | Power auto-lowering electronic ballast special for roadlamp |
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| JP特开2007-299702A 2007.11.15 |
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