CN103309381B - Artificial pollution test's room temperature humidity combined control system and method - Google Patents
Artificial pollution test's room temperature humidity combined control system and method Download PDFInfo
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Abstract
The invention belongs to the sub-experimental technique field of High-Voltage Insulation, particularly to a kind of artificial pollution test's room temperature humidity combined control system, including humidifier, heater and ventilation fan；Temperature Humidity Sensor, industrial computer and data collecting card；Humidifier, heater, ventilation fan and Temperature Humidity Sensor are connected with data collecting card respectively, and data collecting card is connected with industrial computer.It sets the control target value of fog chamber's epidemic disaster by the program software of industrial computer, capture card gathers the epidemic disaster numerical information of standing state in fog chamber by Temperature Humidity Sensor, the control target value of fog chamber's epidemic disaster of input industrial computer and setting is contrasted judgement, determine corresponding regime mode, control heater, humidifier and ventilation fan respectively, be finally reached the purpose that humiture associating accurately controls.The leakage current feature of insulator surface is flowed through, as leakage current maximum, peak value of pulse, pulsed discharge amount and leakage current high fdrequency component provide accurate experimental situation for research.
Description
Technical field
The invention belongs to the sub-experimental technique field of High-Voltage Insulation, particularly to a kind of artificial pollution test's room temperature humidity combined control system, the invention still further relates to artificial pollution test's room temperature humidity combination control method.
Background technology
The insulator that transmission line of electricity is installed, because being chronically exposed in outdoor natural environment, the surface of insulator can deposit dunghill, containing electrolysed substance in dunghill, under the wet climatess such as wet weather, fog, the insulation situation that can make insulator changes, and then may result in power circuit external insulation generation problem, and properly functioning to power circuit brings harm.The sub-artificial pollution test of High-Voltage Insulation is through the Research on experimental methods insulator filthy withstanding voltage in mist.
External insulation is the key basic subject of electric power development.When research insulator contamination characteristic and insulator make moist process analysis, the temperature and humidity of insulator local environment to be controlled, namely control the temperature and humidity of insulator artificial pollution test room.In artificial pollution test, the flashover voltage of insulator is affected by ambient temperature and humidity, the change of humiture can change the situation of making moist of pollution severity of insulators, the change of damp degree is except affecting the pollution flashover voltage of insulator, flow through the leakage current feature of insulator surface, as leakage current maximum, peak value of pulse, pulsed discharge amount and leakage current high fdrequency component etc. also can change with humiture change.
In traditional experimental study, temperature, humidity being considered as independent variable, in fact temperature and humidity is mutually related between the two, and they all can have influence on the situation of making moist of insulator surface.Thus, the combined effect in conjunction with temperature and humidity goes to analyze the situation of making moist of insulator surface, goes the leak current characteristic analyzing insulator surface to seem very necessary.For coordinating the duty of each high pressure of artificial pollution test in high pressure external insulation, meet the relevant criterion requirement of relevant external insulation test, it is necessary to humiture reasonable in design jointly controls measure, reaches good Temperature and Humidity Control effect in fog chamber simultaneously.In traditional control strategy, by temperature, humidity-independent control.Requiring over relatively accurately control temperature and humidity environment, so as to time quickly response is with satisfied control insulator damp degree, it should consider humiture effect each other, the two is jointly controlled.
Summary of the invention
The technical problem to be solved in the present invention is in that to provide a kind of artificial pollution test's room temperature humidity combined control system；The present invention also provides for artificial pollution test's room temperature humidity combination control method.
The invention solves the problems that the technical scheme that above-mentioned technical problem is taked is as follows: a kind of artificial pollution test's room temperature humidity combined control system, including humidifier, heater and ventilation fan；It is characterized in that: also include Temperature Humidity Sensor, industrial computer and data collecting card；Humidifier, heater, ventilation fan and Temperature Humidity Sensor are connected with data collecting card respectively, and data collecting card is connected with industrial computer.
A kind of artificial pollution test's room temperature humidity combination control method, comprises the following steps:
A, humidifier, heater and Temperature Humidity Sensor being placed in fog chamber, ventilation fan is arranged on and is capable of the position that indoor, fog chamber exchange with the humiture of external environment；And humidifier, heater, ventilation fan and Temperature Humidity Sensor are connected with data collecting card respectively, data collecting card is connected with industrial computer；Composition fog chamber's humiture combined control system (abbreviation system)；
B, set the control target value of fog chamber's epidemic disaster by the program software of industrial computer, target temperature that namely the final steady statue of system exactly sets under desirable controlled state and target humidity；
C, capture card gather the epidemic disaster numerical information of standing state in fog chamber by Temperature Humidity Sensor, and the control target value of fog chamber's epidemic disaster numerical information input industrial computer of collection with fog chamber's epidemic disaster of setting is contrasted judgement, program software to system when pre-test to fog chamber in temperature, classify after moisture condition and system target pressure comparison and give epidemic disaster status categories code, wherein temperature be divided into that temperature is low, temperature high with temperature just three kinds of states, humidity is divided into that humidity is low, humidity is higher than humidity just three kinds of states；
D, program software judges the temperature obtained according to contrast, moisture condition class code, differentiate and draw system task handle, control routine be system work as pre-test to fog chamber's state of temperature code be directly added with moisture condition code after obtain, control routine is nine, nine kinds of situations of corresponding expression: a. temperature is low, humidity is low, b. temperature is high, humidity is low, c. temperature is just, humidity is low, d. temperature is low, humidity is high, e. temperature is high, humidity is high, f. temperature is just, humidity is high, g. temperature is low, humidity is just, h. temperature is high, humidity is just, i. temperature is just, humidity is just；
E, control program, according to above-mentioned nine control routines, select corresponding control model, and export control signal and then the duty of control heater, humidifier, ventilation fan by capture card, reach to control the purpose of epidemic disaster in fog chamber.For nine kinds of situations of fog chamber's humiture, its control model is respectively as follows:
A. temperature is low, humidity is low, and control model is heater work, humidifier works, ventilation fan does not work；
B. temperature is high, humidity is low, and control model is that heater does not work, humidifier works, ventilation fan does not work；
C. temperature just, humidity low, control model is that heater does not work, humidifier work, ventilation fan do not work；
D. temperature is low, humidity is high, and control model is heater work, humidifier does not work, ventilation fan works；
E. temperature is high, humidity is high, and control model is that heater does not work, humidifier does not work, ventilation fan work；
F. temperature just, humidity high, control model is that heater does not work, humidifier does not work, ventilation fan work；
G. temperature is low, humidity just, control model is heater work, humidifier does not work, ventilation fan does not work；
H. temperature is high, humidity just, control model is that heater does not work, humidifier does not work, ventilation fan does not work；
I. temperature just, humidity just；Control model is that heater does not work, humidifier does not work, ventilation fan does not work.
A kind of method accurately controlling little fog chamber epidemic disaster when the invention provides artificial pollution test.The method makes duty classification after the target epidemic disaster state vs by currently existing for fog chamber epidemic disaster state and setting, different control strategies is adopted namely to determine corresponding regime mode for different classification, control heater, humidifier and ventilation fan respectively, be finally reached the purpose that humiture associating accurately controls.
The present invention is through experiment, it was demonstrated that accessible control accuracy is: relative humidity can realize automatically controlling in current environment humidity ~ 99% scope, fluctuation range < ± 3%；Temperature can realize automatically controlling within the scope of current environmental temperature ~ 50 DEG C, fluctuation range < ± 1 DEG C.The present invention is the leakage current feature that research flows through insulator surface, as leakage current maximum, peak value of pulse, pulsed discharge amount and leakage current high fdrequency component etc. provide accurate study experimental situation.
Accompanying drawing explanation
Fig. 1 is artificial pollution test's room temperature humidity combined control system structural representation,
Fig. 2 is artificial pollution test's room temperature humidity combination control method general flow chart,
Fig. 3 be when target temperature 30 DEG C is constant, the control design sketch of fog chamber's humidity,
Fig. 4 be target humidity 80% constant when, mist indoor temperature control design sketch.
In figure: 1 fog chamber, 2 insulators, 3 humidifiers, 4 heaters, 5 Temperature Humidity Sensors,
6 ventilation fans, 7 industrial computers, 8 capture cards.
Detailed description of the invention
System embodiment is as shown in Figure 1: a kind of artificial pollution test's room temperature humidity combined control system, including humidifier 3, heater 4 and ventilation fan 6；It is characterized in that: also include Temperature Humidity Sensor 5, industrial computer 7 and data collecting card 8；Humidifier 3, heater 4, ventilation fan 6 and Temperature Humidity Sensor 5 are connected with data collecting card 8 respectively, and data collecting card 8 is connected with industrial computer 7.Insulator 2 is placed in fog chamber 1, and fog chamber is insulator artificial pollution test room.Heater 4 is chosen as resistor-type heater strip, long 30m, power 250W, is evenly arranged in fog chamber surrounding；Humidifier 3 is chosen as and adds the adjustable ultrasonic humidifier of mist amount；The epidemic disaster realized in fog chamber with external environment by ventilation fan 6 is exchanged, to reduce the epidemic disaster in fog chamber.
Embodiment of the method is referring to Fig. 1 and Fig. 2: a kind of artificial pollution test's room temperature humidity combination control method, comprises the following steps:
A, humidifier, heater and Temperature Humidity Sensor being placed in fog chamber, ventilation fan is arranged on and is capable of the position that indoor, fog chamber exchange with the humiture of external environment；And humidifier, heater, ventilation fan and Temperature Humidity Sensor are connected with data collecting card respectively, data collecting card is connected with industrial computer；Composition fog chamber humiture combined control system；
B, inputted the control target value of fog chamber's epidemic disaster by the program software of industrial computer；
C, capture card gather the epidemic disaster numerical information of standing state in fog chamber by Temperature Humidity Sensor, and the control target value of fog chamber's epidemic disaster numerical information input industrial computer of collection with fog chamber's epidemic disaster of setting is contrasted judgement, program software to system when pre-test to fog chamber in temperature, classify after moisture condition and system target pressure comparison and give epidemic disaster status categories code, referring to table 1: wherein temperature be divided into that temperature is low, temperature high with temperature just three kinds of states, represent with code 0,1,6 respectively；Humidity is divided into that humidity is low, humidity higher than humidity just three kinds of states, represent with-1 ,-3 ,-5 respectively；
D, program software judges the temperature obtained according to contrast, moisture condition class code, differentiate and draw system task handle, control routine be system work as pre-test to fog chamber's state of temperature code be directly added with moisture condition code after obtain, since it is desired that to the jointly controlling of temperature and humidity in fog chamber, then there is nine shown in table 2 control routine, nine kinds of situation assembled state of corresponding expression: a. temperature is low, humidity is low, b. temperature is high, humidity is low, c. temperature is just, humidity is low, d. temperature is low, humidity is high, e. temperature is high, humidity is high, f. temperature is just, humidity is high, g. temperature is low, humidity is just, h. temperature is high, humidity is just, i. temperature is just, humidity is just；Referring to table 2, the control routine of described nine kinds of situations is respectively as follows: 0+(-1)=-1,1+(-1)=0,6+(-1)=5,0+(-3)=-3,1+(-3)=-2,6+(-3)=3,0+(-5)=-5,1+(-5)=-4,6+(-5)=1；
E, referring to table 3: control program according to above-mentioned nine control routines, select corresponding control model, and export control signal by capture card, and then control the duty of heater, humidifier, ventilation fan, reach the purpose of epidemic disaster in control fog chamber.For nine kinds of situations of fog chamber's humiture, its control model is respectively as follows:
A. temperature is low, humidity is low, and control routine is-1, and control model is heater work, humidifier works, ventilation fan does not work；
B. temperature is high, humidity is low, and control routine is 0, and control model is that heater does not work, humidifier works, ventilation fan does not work；
C. temperature just, humidity low, control routine is 5, and control model is that heater does not work, humidifier work, ventilation fan do not work；
D. temperature is low, humidity is high, and control routine is-3, and control model is heater work, humidifier does not work, ventilation fan works；
E. temperature is high, humidity is high, and control routine is-2, and control model is that heater does not work, humidifier does not work, ventilation fan work；
F. temperature just, humidity high, control routine is 3, and control model is that heater does not work, humidifier does not work, ventilation fan work；
G. temperature is low, humidity just, control routine is-5, and control model is heater work, humidifier does not work, ventilation fan does not work；
H. temperature is high, humidity just, control routine is-4, and control model is that heater does not work, humidifier does not work, ventilation fan does not work；
I. temperature just, humidity just, control routine is 1, and control model is that heater does not work, humidifier does not work, ventilation fan does not work.
Every kind of assembled state cited in table 2 has a code, and this code obtains after being directly added with moisture condition code by state of temperature code, its objective is, according to these nine codes, to carry out the control model nine kinds different in caller.The signal that program transmits according to sensor, it is judged that the current state of epidemic disaster in fog chamber, automatically selects corresponding control model, controls the duty of heater, humidifier, extraction fan, it is achieved thereby that automatically control the function of temperature and humidity in fog chamber.
Control program, after selecting corresponding control model, exports control signal and then the duty of control heater, humidifier, ventilation fan by capture card, reaches to control the purpose of epidemic disaster in fog chamber.
Result of the test shows, by means of the invention it is possible to make the epidemic disaster value that fog chamber reaches to preset, control accuracy be the fluctuation range of humidity less than ± 3%, the fluctuation range of temperature is less than ± 1 DEG C.Adopt the present embodiment, the control effect of fog chamber's humidity as it is shown on figure 3, the control effect of mist indoor temperature as shown in Figure 4.
In Fig. 3: transverse axis is the time, left coordinate axes is temperature, and solid line is temperature control curve, and right coordinate axes is humidity, and dotted line is humid control curve；It is in humidity control process, keeps ambient temperature 30 DEG C constant, control system humidity stepped change, after system humidity reaches preset value, remain stable for the regular hour.
In Fig. 4: transverse axis is the time, left coordinate axes is temperature, and solid line is temperature control curve, and right coordinate axes is humidity, and dotted line is humid control curve；It is in temperature controlled processes, keeps ambient humidity 80 DEG C constant, control system temperature ladder and rise, after system temperature reaches preset value, remain stable for the regular hour.
Claims (3)
1. the method for artificial pollution test's room temperature humidity combined control system, it is characterised in that comprise the following steps:
A, humidifier, heater and Temperature Humidity Sensor being placed in fog chamber, ventilation fan is arranged on and is capable of the position that indoor, fog chamber exchange with the humiture of external environment；And humidifier, heater, ventilation fan and Temperature Humidity Sensor are connected with data collecting card respectively, data collecting card is connected with industrial computer；Composition fog chamber humiture combined control system；
B, set the control target value of fog chamber's epidemic disaster by the program software of industrial computer, target temperature that namely the final steady statue of system exactly sets under desirable controlled state and target humidity；
C, data collecting card gather the epidemic disaster numerical information of standing state in fog chamber by Temperature Humidity Sensor, and the control target value of fog chamber's epidemic disaster numerical information input industrial computer of collection with fog chamber's epidemic disaster of setting is contrasted judgement, program software to system when pre-test to fog chamber in temperature, classify after moisture condition and system target pressure comparison and give epidemic disaster status categories code, wherein temperature be divided into that temperature is low, temperature high with temperature just three kinds of states, humidity is divided into that humidity is low, humidity is higher than humidity just three kinds of states；
D, program software judges the temperature obtained according to contrast, moisture condition class code, differentiate and draw system task handle, control routine be system work as pre-test to fog chamber's state of temperature code be directly added with moisture condition code after obtain, control routine is nine, nine kinds of situations of corresponding expression: a. temperature is low, humidity is low, b. temperature is high, humidity is low, c. temperature is just, humidity is low, d. temperature is low, humidity is high, e. temperature is high, humidity is high, f. temperature is just, humidity is high, g. temperature is low, humidity is just, h. temperature is high, humidity is just, i. temperature is just, humidity is just；
E, control program, according to above-mentioned nine control routines, select corresponding control model, and export control signal and then the duty of control heater, humidifier, ventilation fan by data collecting card, reach to control the purpose of epidemic disaster in fog chamber.
2. the method for a kind of artificial pollution test's room temperature humidity combined control system as claimed in claim 1, it is characterised in that for nine kinds of situations of fog chamber's humiture, its control model is respectively as follows:
A. temperature is low, humidity is low, and control model is heater work, humidifier works, ventilation fan does not work；
B. temperature is high, humidity is low, and control model is that heater does not work, humidifier works, ventilation fan does not work；
C. temperature just, humidity low, control model is that heater does not work, humidifier work, ventilation fan do not work；
D. temperature is low, humidity is high, and control model is heater work, humidifier does not work, ventilation fan works；
E. temperature is high, humidity is high, and control model is that heater does not work, humidifier does not work, ventilation fan work；
F. temperature just, humidity high, control model is that heater does not work, humidifier does not work, ventilation fan work；
G. temperature is low, humidity just, control model is heater work, humidifier does not work, ventilation fan does not work；
H. temperature is high, humidity just, control model is that heater does not work, humidifier does not work, ventilation fan does not work；
I. temperature just, humidity just；Control model is that heater does not work, humidifier does not work, ventilation fan does not work.
3. the method for a kind of artificial pollution test's room temperature humidity combined control system as claimed in claim 1, it is characterised in that: described heater is resistor-type heater strip, long 30m, power 250W, is evenly arranged in fog chamber surrounding；Described humidifier is for adding the adjustable ultrasonic humidifier of mist amount.
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| CN106054973A (en) * | 2016-08-17 | 2016-10-26 | 国网江苏省电力公司电力科学研究院 | Temperature control device and method for artificial pollution laboratory |
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| CN109254230A (en) * | 2018-09-29 | 2019-01-22 | 海南电网有限责任公司电力科学研究院 | A kind of drawer type intelligentized control method corona unit and control method |
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