CN103309381A - Temperature and humidity combined control system and method for artificial pollution test room - Google Patents

Temperature and humidity combined control system and method for artificial pollution test room Download PDF

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Publication number
CN103309381A
CN103309381A CN2013102664036A CN201310266403A CN103309381A CN 103309381 A CN103309381 A CN 103309381A CN 2013102664036 A CN2013102664036 A CN 2013102664036A CN 201310266403 A CN201310266403 A CN 201310266403A CN 103309381 A CN103309381 A CN 103309381A
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temperature
humidity
control
humidifier
worked
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CN2013102664036A
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CN103309381B (en
Inventor
张子龙
翟耀乾
唐凯
吕强
焦小强
张步勇
戴罕奇
赵晨龙
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甘肃省电力公司检修公司
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Abstract

The invention belongs to the technical field of high-voltage insulator experiments and particularly relates to a temperature and humidity combined control system for an artificial pollution test room. The system comprises a humidifier, a heater and a ventilation fan and further comprises a temperature and humidity sensor, an industrial personal computer and a data acquisition card. The humidifier, the heater, the ventilation fan and the temperature and humidity sensor are connected with the data acquisition card respectively, and the data acquisition card is connected with the industrial personal computer. Temperature and humidity control target values of a spray room are set through program software of the industrial personal computer, the data acquisition card acquires temperature and humidity value information in an existing state in the spray room through the temperature and humidity sensor, the temperature and humidity value information is input in the industrial personal computer to be compared with the set temperature and humidity control target values and judged, a corresponding working condition mode is determined, the heater, the humidifier and the ventilation fan are controlled respectively, and the temperature and humidity combined accurate control is achieved. An accurate test environment is provided for study on characteristics of leakage currents of the surfaces of insulators, such as leakage current maximum values, pulse peak values, the pulse discharge capacity and leakage current high-frequency components.

Description

Artificial pollution test's room temperature humidity combined control system and method
Technical field
The invention belongs to the sub-experimental technique of High-Voltage Insulation field, particularly 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 of long term exposure in the open in the physical environment, the surface of insulator can deposit dunghill, contain electrolysed substance in the dunghill, under humid climates such as wet weather, fog, the insulation situation of insulator is changed, and then may cause power circuit external insulation generation problem, the normal operation of power circuit is brought harm.High-Voltage Insulation Ziren worker pollution test is exactly the filthy withstand voltage of method research insulator in mist by experiment.
External insulation is the key basic subject of electric power development.When research insulator contamination characteristic and insulator make moist process analysis procedure analysis, control the temperature and humidity of insulator environment of living in, namely control the temperature and humidity of insulator artificial pollution test chamber.The flashover voltage of insulator is influenced by ambient temperature and humidity among the artificial pollution test, the variation of humiture can change the situation of making moist of insulator surface filth, the degree change of making moist is except meeting influences the pollution flashover voltage of insulator, the flow through leakage current feature of insulator surface also can change to change with humiture as leakage current maximal value, peak value of pulse, pulsed discharge amount and leakage current high fdrequency component etc.
In traditional experimental study, temperature, humidity are considered that as independent variable in fact temperature and humidity is mutually related between the two, they all can have influence on the situation of making moist of insulator surface.Thereby, go to analyze the situation of making moist of insulator surface in conjunction with the acting in conjunction of temperature and humidity, the leak current characteristic of going to analyze insulator surface seems very necessary.For cooperating the duty of each high pressure of artificial pollution test in the high pressure external insulation, satisfy the relevant criterion requirement of relevant external insulation test simultaneously, need humiture reasonable in design to jointly control measure, in the fog chamber, reach good Temperature and Humidity Control effect.In traditional control strategy, temperature, humidity are independently controlled.By than the accurately control temperature and humidity environment, when making it response fast and make moist degree to satisfy the control insulator, should take all factors into consideration humiture effect each other at needs, the two is jointly controlled.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of artificial pollution test's room temperature humidity combined control system; The present invention also provides artificial pollution test's room temperature humidity combination control method.
It is as follows that the present invention will solve the problems of the technologies described above the technical scheme of taking: a kind of artificial pollution test's room temperature humidity combined control system comprises humidifier, well heater and scavenger fan; It is characterized in that: also comprise Temperature Humidity Sensor, industrial computer and data collecting card; Humidifier, well heater, scavenger fan and Temperature Humidity Sensor respectively with the data acquisition card connection, data collecting card is connected with industrial computer.
A kind of artificial pollution test's room temperature humidity combination control method may further comprise the steps:
A, humidifier, well heater and Temperature Humidity Sensor are placed the fog chamber, scavenger fan is installed in can realize the indoor position that exchanges with the humiture of external environment, fog chamber; And with humidifier, well heater, scavenger fan and Temperature Humidity Sensor respectively with the data acquisition card connection, data collecting card is connected with industrial computer; Form fog chamber's humiture combined control system (abbreviation system);
B, the program software setting fog chamber temperature by industrial computer, the control target value of humidity, namely the final steady state (SS) of system is target temperature and the target humidity of setting just under desirable state of a control;
C, capture card are gathered temperature, the humidity information of standing state in the fog chamber by Temperature Humidity Sensor, and fog chamber's temperature, humidity information input industrial computer and fog chamber's temperature of setting, the control target value of humidity of gathering contrasted judgement, program software is classified after to the temperature in the current fog chamber that measures of system, moisture condition and the comparison of aims of systems value and is given temperature, moisture condition class code, wherein temperature is divided into that temperature is low, temperature is high and temperature three kinds of states just in time, and humidity is divided into that humidity is low, humidity is higher than just in time three kinds of states of humidity;
D, program software is judged the temperature that obtains according to contrast, the moisture condition class code, differentiate and draw the system works control routine, control routine is to obtain after the current fog chamber's state of temperature code that measures of system and the direct addition of moisture condition code, control routine is nine, nine kinds of situations of corresponding expression: a. temperature is low, humidity is low, b. temperature height, humidity is low, c. temperature just in time, humidity is low, d. temperature is low, the humidity height, e. temperature height, the humidity height, the f. temperature is just in time, the humidity height, the g. temperature is low, humidity just in time, h. temperature height, humidity just in time, the i. temperature is just in time, humidity just in time;
E, control program are selected corresponding control model according to above-mentioned nine control routines, and by capture card output control signal, and then the duty of control heater, humidifier, scavenger fan, reach purpose warm in the control fog chamber, humidity.At nine kinds of situations of fog chamber's humiture, its control model is respectively:
A. temperature is low, humidity is low, and control model is that well heater work, humidifier work, scavenger fan are not worked;
B. temperature height, humidity are low, and control model is that well heater is not worked, humidifier work, scavenger fan are not worked;
C. temperature just in time, humidity is low, and control model is that well heater is not worked, humidifier work, scavenger fan are not worked;
D. temperature is low, humidity is high, and control model is that well heater work, humidifier are not worked, scavenger fan work;
E. temperature height, humidity height, control model is that well heater is not worked, humidifier is not worked, scavenger fan work;
F. temperature just in time, the humidity height, control model is that well heater is not worked, humidifier is not worked, scavenger fan work;
G. low, the humidity of temperature just in time, control model is that well heater work, humidifier are not worked, scavenger fan is not worked;
H. temperature height, humidity just in time, control model is that well heater is not worked, humidifier is not worked, scavenger fan is not worked;
I. temperature just in time, humidity just in time; Control model is that well heater is not worked, humidifier is not worked, scavenger fan is not worked.
The accurate method of the little fog chamber of control temperature, humidity when the invention provides a kind of artificial pollution test.This method is made the duty classification after with the target temperature of the current existing temperature in fog chamber, moisture condition and setting, moisture condition contrast, adopt different control strategies namely to determine corresponding operating mode pattern at different classification, control heater, humidifier and scavenger fan finally reach the accurately purpose of control of humiture associating respectively.
The present invention through experiment, proves that accessible control accuracy is: relative humidity can realize control automatically, fluctuation range<± 3% in current environment humidity ~ 99% scope; Temperature can realize automatically control in ℃ scope of current environmental temperature ~ 50, fluctuation range<± 1 ℃.The present invention provides the accurate study experimental situation for studying the leakage current feature of the insulator surface of flowing through as leakage current maximal value, peak value of pulse, pulsed discharge amount and leakage current high fdrequency component etc.
Description of drawings
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 is the control design sketch of humidity under 30 ℃ of constant situations of target temperature, in the fog chamber,
Fig. 4 is temperature controlling design sketch under the constant situation of target humidity 80%, in the fog chamber.
Among the figure: 1-fog chamber, 2-insulator, 3-humidifier, 4-well heater, 5-Temperature Humidity Sensor,
6-scavenger fan, 7-industrial computer, 8-capture card.
Embodiment
System embodiment is as shown in Figure 1: a kind of artificial pollution test's room temperature humidity combined control system comprises humidifier 3, well heater 4 and scavenger fan 6; It is characterized in that: also comprise Temperature Humidity Sensor 5, industrial computer 7 and data collecting card 8; Humidifier 3, well heater 4, scavenger 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 the fog chamber 1, and the fog chamber is insulator artificial pollution test chamber.Well heater 4 is chosen as the resistor-type heater strip, long 30m, power 250W, be evenly arranged in the fog chamber around; Humidifier 3 is chosen as and adds the adjustable ultrasonic humidifier of mist amount; Realize exchanging with temperature, the humidity of external environment in the fog chamber by scavenger fan 6, to reduce temperature, the humidity in the fog chamber.
Method embodiment is referring to Fig. 1 and Fig. 2: a kind of artificial pollution test's room temperature humidity combination control method may further comprise the steps:
A, humidifier, well heater and Temperature Humidity Sensor are placed the fog chamber, scavenger fan is installed in can realize the indoor position that exchanges with the humiture of external environment, fog chamber; And with humidifier, well heater, scavenger fan and Temperature Humidity Sensor respectively with the data acquisition card connection, data collecting card is connected with industrial computer; Form fog chamber's humiture combined control system;
B, the program software input fog chamber temperature by industrial computer, the control target value of humidity;
C, capture card are gathered temperature, the humidity information of standing state in the fog chamber by Temperature Humidity Sensor, and fog chamber's temperature, humidity information input industrial computer and fog chamber's temperature of setting, the control target value of humidity of gathering contrasted judgement, program software is classified after to the temperature in the current fog chamber that measures of system, moisture condition and the comparison of aims of systems value and is given temperature, moisture condition class code, referring to table 1: wherein temperature is divided into that temperature is low, temperature is high and temperature three kinds of states just in time, represents with code 0,1,6 respectively; Humidity is divided into that humidity is low, humidity is higher than just in time three kinds of states of humidity, represents with-1 ,-3 ,-5 respectively;
D, program software is judged the temperature that obtains according to contrast, the moisture condition class code, differentiate and draw the system works control routine, control routine is to obtain after the current fog chamber's state of temperature code that measures of system and the direct addition of moisture condition code, because need jointly controlling temperature and humidity in the fog chamber, nine control routines shown in the table 2 are then arranged, nine kinds of situation assembled state of corresponding expression: a. temperature is low, humidity is low, b. temperature height, humidity is low, c. temperature just in time, humidity is low, d. temperature is low, the humidity height, e. temperature height, the humidity height, f. temperature just in time, the humidity height, g. temperature is low, humidity just in time, h. temperature height, humidity just in time, the i. temperature is just in time, humidity just in time; Referring to table 2, the control routine of described nine kinds of situations is respectively: 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 is selected corresponding control model according to above-mentioned nine control routines, and by capture card output control signal, and then the duty of control heater, humidifier, scavenger fan, reaches purpose warm in the control fog chamber, humidity.At nine kinds of situations of fog chamber's humiture, its control model is respectively:
A. temperature is low, humidity is low, and control routine is-1, and control model is that well heater work, humidifier work, scavenger fan are not worked;
B. temperature height, humidity are low, and control routine is 0, and control model is that well heater is not worked, humidifier work, scavenger fan are not worked;
C. temperature just in time, humidity is low, and control routine is 5, and control model is that well heater is not worked, humidifier work, scavenger fan are not worked;
D. temperature is low, humidity is high, and control routine is-3, and control model is that well heater work, humidifier are not worked, scavenger fan work;
E. temperature height, humidity height, control routine is-2, control model is that well heater is not worked, humidifier is not worked, scavenger fan work;
F. temperature just in time, the humidity height, control routine is 3, control model is that well heater is not worked, humidifier is not worked, scavenger fan work;
G. low, the humidity of temperature just in time, control routine is-5, control model is that well heater work, humidifier are not worked, scavenger fan is not worked;
H. temperature height, humidity just in time, control routine is-4, control model is that well heater is not worked, humidifier is not worked, scavenger fan is not worked;
I. temperature just in time, humidity just in time, control routine is 1, control model is that well heater is not worked, humidifier is not worked, scavenger fan is not worked.
Every kind of cited assembled state has a code in the table 2, and this code obtains after by state of temperature code and the direct addition of moisture condition code, its objective is according to these nine codes, comes nine kinds of different control models in the calling program.The signal that program transmits according to sensor is judged current state warm in the fog chamber, humidity, selects corresponding control model automatically, the duty of control heater, humidifier, extraction fan, thus realized the function of temperature and humidity in the automatic control fog chamber.
Control program by capture card output control signal, and then the duty of control heater, humidifier, scavenger fan, reaches purpose warm in the control fog chamber, humidity after selecting corresponding control model.
Test findings shows, by the present invention, can make the fog chamber reach default temperature, humidity value, control accuracy be the fluctuation range of humidity less than ± 3%, the fluctuation range of temperature is less than ± 1 ℃.Adopt present embodiment, in the fog chamber control effect of humidity as shown in Figure 3, the temperature controlling effect is as shown in Figure 4 in the fog chamber.
Among Fig. 3: transverse axis is the time, and left coordinate axis is temperature, and solid line is temperature control curve, and right coordinate axis is humidity, and dotted line is humidity control curve; Be in the humidity control procedure, keep 30 ℃ of environment temperatures constant, control system humidity stepped change after system's humidity reaches preset value, keeps stablizing the regular hour.
Among Fig. 4: transverse axis is the time, and left coordinate axis is temperature, and solid line is temperature control curve, and right coordinate axis is humidity, and dotted line is humidity control curve; Be in temperature controlled processes, keep 80 ℃ of ambient humidities constant, control system temperature ladder rises, and after system temperature reaches preset value, keeps stablizing the regular hour.

Claims (4)

1. artificial pollution test's room temperature humidity combined control system comprises humidifier, well heater and scavenger fan; It is characterized in that: also comprise Temperature Humidity Sensor, industrial computer and data collecting card; Humidifier, well heater, scavenger fan and Temperature Humidity Sensor respectively with the data acquisition card connection, data collecting card is connected with industrial computer.
2. a kind of artificial pollution test's room temperature humidity combined control system as claimed in claim 1 is characterized in that: well heater 4 is the resistor-type heater strip, long 30m, power 250W, be evenly arranged in the fog chamber around; Humidifier 3 is for adding the adjustable ultrasonic humidifier of mist amount.
3. an application rights requires the method for 1 described artificial pollution test's room temperature humidity combined control system, it is characterized in that may further comprise the steps:
A, humidifier, well heater and Temperature Humidity Sensor are placed the fog chamber, scavenger fan is installed in can realize the indoor position that exchanges with the humiture of external environment, fog chamber; And with humidifier, well heater, scavenger fan and Temperature Humidity Sensor respectively with the data acquisition card connection, data collecting card is connected with industrial computer; Form fog chamber's humiture combined control system;
B, the program software setting fog chamber temperature by industrial computer, the control target value of humidity, namely the final steady state (SS) of system is target temperature and the target humidity of setting just under desirable state of a control;
C, capture card are gathered temperature, the humidity information of standing state in the fog chamber by Temperature Humidity Sensor, and fog chamber's temperature, humidity information input industrial computer and fog chamber's temperature of setting, the control target value of humidity of gathering contrasted judgement, program software is classified after to the temperature in the current fog chamber that measures of system, moisture condition and the comparison of aims of systems value and is given temperature, moisture condition class code, wherein temperature is divided into that temperature is low, temperature is high and temperature three kinds of states just in time, and humidity is divided into that humidity is low, humidity is higher than just in time three kinds of states of humidity;
D, program software is judged the temperature that obtains according to contrast, the moisture condition class code, differentiate and draw the system works control routine, control routine is to obtain after the current fog chamber's state of temperature code that measures of system and the direct addition of moisture condition code, control routine is nine, nine kinds of situations of corresponding expression: a. temperature is low, humidity is low, b. temperature height, humidity is low, c. temperature just in time, humidity is low, d. temperature is low, the humidity height, e. temperature height, the humidity height, the f. temperature is just in time, the humidity height, the g. temperature is low, humidity just in time, h. temperature height, humidity just in time, the i. temperature is just in time, humidity just in time;
E, control program are selected corresponding control model according to above-mentioned nine control routines, and by capture card output control signal, and then the duty of control heater, humidifier, scavenger fan, reach purpose warm in the control fog chamber, humidity.
4. a kind of artificial pollution test's room temperature humidity combination control method as claimed in claim 3 is characterized in that nine kinds of situations at fog chamber's humiture, and its control model is respectively:
A. temperature is low, humidity is low, and control model is that well heater work, humidifier work, scavenger fan are not worked;
B. temperature height, humidity are low, and control model is that well heater is not worked, humidifier work, scavenger fan are not worked;
C. temperature just in time, humidity is low, and control model is that well heater is not worked, humidifier work, scavenger fan are not worked;
D. temperature is low, humidity is high, and control model is that well heater work, humidifier are not worked, scavenger fan work;
E. temperature height, humidity height, control model is that well heater is not worked, humidifier is not worked, scavenger fan work;
F. temperature just in time, the humidity height, control model is that well heater is not worked, humidifier is not worked, scavenger fan work;
G. low, the humidity of temperature just in time, control model is that well heater work, humidifier are not worked, scavenger fan is not worked;
H. temperature height, humidity just in time, control model is that well heater is not worked, humidifier is not worked, scavenger fan is not worked;
I. temperature just in time, humidity just in time; Control model is that well heater is not worked, humidifier is not worked, scavenger fan is not worked.
CN201310266403.6A 2013-06-28 2013-06-28 Artificial pollution test's room temperature humidity combined control system and method Expired - Fee Related CN103309381B (en)

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CN104749502A (en) * 2015-03-30 2015-07-01 国家电网公司 Device for simulating natural fog of high-pressure artificial climate test room
CN104850155A (en) * 2015-03-16 2015-08-19 国家电网公司 Steam fog apparatus of artificial pollution laboratory for high-voltage equipment and flow control method thereof
CN104849634A (en) * 2015-05-19 2015-08-19 国家电网公司 Insulator natural contamination deposit simulation system
CN105864957A (en) * 2016-03-31 2016-08-17 国家电网公司 Penetrability test device for high-voltage equipment phytotron and control method of penetrability test device
CN105865996A (en) * 2016-05-27 2016-08-17 中国南方电网有限责任公司电网技术研究中心 Measuring device for fog distribution uniformity and method
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
CN106814269A (en) * 2016-12-14 2017-06-09 国家电网公司 Monolithic insulator Natural contamination attribute testing data handling system and processing method
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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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104850155A (en) * 2015-03-16 2015-08-19 国家电网公司 Steam fog apparatus of artificial pollution laboratory for high-voltage equipment and flow control method thereof
CN104749502A (en) * 2015-03-30 2015-07-01 国家电网公司 Device for simulating natural fog of high-pressure artificial climate test room
CN104849634A (en) * 2015-05-19 2015-08-19 国家电网公司 Insulator natural contamination deposit simulation system
CN105864957A (en) * 2016-03-31 2016-08-17 国家电网公司 Penetrability test device for high-voltage equipment phytotron and control method of penetrability test device
CN105864957B (en) * 2016-03-31 2018-09-11 国家电网公司 A kind of high voltage installation phjytotron permeability test device and its control method
CN105865996A (en) * 2016-05-27 2016-08-17 中国南方电网有限责任公司电网技术研究中心 Measuring device for fog distribution uniformity and method
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
CN106814269A (en) * 2016-12-14 2017-06-09 国家电网公司 Monolithic insulator Natural contamination attribute testing data handling system and processing method
CN106814269B (en) * 2016-12-14 2020-02-18 国家电网公司 System and method for processing natural dirt accumulation characteristic test data of single-chip insulator
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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