CN102508506B - Intelligent electrical equipment indoor environment temperature control method based on temperature difference - Google Patents
Intelligent electrical equipment indoor environment temperature control method based on temperature difference Download PDFInfo
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- CN102508506B CN102508506B CN 201110414124 CN201110414124A CN102508506B CN 102508506 B CN102508506 B CN 102508506B CN 201110414124 CN201110414124 CN 201110414124 CN 201110414124 A CN201110414124 A CN 201110414124A CN 102508506 B CN102508506 B CN 102508506B
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Abstract
The invention discloses an intelligent electrical equipment indoor environment temperature control method based on temperature difference, belonging to the intelligent indoor environment temperature control technology of an electric power system and electric user electrical equipment. The control method comprises the following steps: firstly performing self-inspection after the system is started, collecting indoor and outdoor environment temperature signals of electrical equipment, current and voltage signals of each side power of the electrical equipment and a work state of coolers after the self-inspection is normal; putting the coolers in sequence if the indoor temperature of the electrical equipment is higher than 40 DEG C, and cycling and collecting data; judging the indoor environment temperature T1 of the electrical equipment is higher than 60 DEG C, a programmable logic controller synthetically judging whether the electrical equipment has an ignition accident, the coolers controlling loop action, automatically quitting the operation of all the coolers, otherwise putting in all the coolers. The device can intelligently control the coolers to operate or stop operating on the premise that the reliable environment temperature of the electrical equipment operating safely is ensured, and the control method has the advantages of accurate control, optimal economic operation and the like.
Description
Technical field
Based on the indoor environment temperature intelligence control method of the electrical equipment of temperature gap, belong to the indoor environment temperature intelligent control technology of electric system and power consumer electrical equipment, should guarantee the temperature environment that the electrical equipment safe operation is necessary, make again electric energy loss be in floor level.
Background technology
the electrical equipment of indoor use is due to its conductor dbus excess current, under the effect of self-resistance and connecting portion contact resistance, meeting produce power loss (coil class electrical equipment also can produce electromagnetic consumable under the effect of electromagnetic field), the whole energy transform into heat energies of these energy losses, make the temperature rising in various degree at each position of electrical equipment, it is the process of a vicious cycle that temperature raises, can cause the running temperature of electrical equipment constantly to raise as not taking measures, meet or exceed the running temperature limit value of permission, affect equipment service efficiency and operation life, can insulate by damage equipment when serious, even cause electrical equipment to burn out, cause power failure, therefore within equipment heating must being controlled at certain scope." heating of GB763-1990 ac high-voltage electrical equipment when long-term work " just stipulated that the normal environment for use condition of electrical equipment ambient air temperature is not higher than 40 ℃, recommend the every reduction of surrounding air environment temperature 1K, the electrical equipment load current can increase specified 0.5%, but do not allow to surpass 20% of nominal load, when ambient air temperature surpasses 40 ℃ (but not higher than 60 ℃), every increase 1K should reduce current capacity 1.8%; Also stipulated simultaneously the permission temperature rise when the highest permission running temperature of dissimilar conductor, electric parts, insulating material etc. and ambient air temperature surpass 40 ℃.
The degree of heat of same electrical equipment and institute on-load size, indoor environment temperature, equipment healthy water equality factor are relevant, under normal circumstances by guaranteeing that electrical equipment is operated in certain ambient temperature range, ensures the electrical equipment safe operation.The indoor environment temperature control of conventional electrical equipment is generally fan electromotor or the air-conditioning (following general designation refrigeratory) in the indoor installation some of electrical equipment, adopting fan to strengthen indoor-outdoor air flows to dispel the heat, utilize in addition air conditioner refrigerating to guarantee indoor suitable temperature environment, also have by air natural circulation, modal is the fan cooling mode.Generally install the fan electromotor of some additional on the building wall of the hyperbaric chamber of mounting electrical equipment, switchgear building, electrical source of power chamber etc., control the operation of fan electromotor according to the indoor temperature value.The cooling device that installs additional all will consume certain electric energy, and its input and excision are divided into two kinds of patterns manually or automatically, and comparatively advanced is Input Mode automatic according to indoor environment temperature now.There is following shortcoming in present conventional radiating mode: 1, no matter electric equipment operation whether, when indoor temperature reaches setting valve, will whole group cooling device be all forced to drop into, when the equipment shut down condition of causing does not need to dispel the heat, also drop into whole fan electromotors or air-conditioning, caused waste of energy.2, when electrical equipment generation firing accident, indoor environment temperature is bound to high extremely temperature actuated definite value (under the refrigeratory normal operating condition, the indoor temperature of electrical equipment does not generally allow higher than 60 ℃, if temperature is far away higher than this value, can judge that abnormal accident has occured electrical equipment), cooling device still remains on operation or is activated state, and Air Flow is forced to accelerate, the development of meeting expansion or aggravation accident is unfavorable for catching fire and puts out.3, when electric equipment operation, although the heating level of equipment own is not high, when indoor environment temperature was higher, under the condition that satisfies the requirement of electric equipment operation environment temperature, cooling device was forced to put into operation, has also caused the unnecessary too much loss of electric energy.When 4, the outside atmosphere environment temperature is low, although indoor environment temperature not yet reaches the startup definite value sometimes, but the heating level of electrical equipment self is very high, consume a large amount of electric energy, just need further to reduce the equipment heating level by heat radiation, and the cooling device of this moment often can not in time put into operation, cause the hot(test)-spot temperature of operation electrical equipment too high, affect its safe operation, the power of electrical equipment autophage also tends to surpass the power consumption of the cooling device that drops into, and is extremely unreasonable economically.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiency that prior art exists, provide a kind of by the Real-time Collection to electrical equipment indoor and outdoor surroundings temperature, the temperature gap that compares the indoor and outdoor surroundings temperature, with temperature gap as foundation, the sequence of Based Intelligent Control cooling device drops into or is out of service, to realizing the indoor environment temperature intelligence control method of the electrical equipment based on temperature gap of accurately control and best safety economical operation.
The technical scheme that the present invention solves its technical matters employing is: should be based on the indoor environment temperature intelligence control method of the electrical equipment of temperature gap, and it is characterized in that: step is as follows:
Step 1: at first system carries out self check after starting, and the self check mistake provides fault-signal, gathers electrical equipment indoor and outdoor temperature signal, electric current and the voltage signal of each side power supply of electrical equipment, refrigeratory duty after self check is normal;
Step 2: if the indoor temperature of electrical equipment higher than 40 ℃, sequence drops into refrigeratory and circle collection data; If voltage signal U
0=0/ current signal I
0=0, cut off all Cooler Power;
Step 3: according to formula △ T=T
1-T
2, calculate in real time, obtain the temperature gap △ T of electrical equipment indoor and outdoor, if temperature gap △ T surpasses 15 ℃ of recommendations, refrigeratory puts into operation by a sequence, to reduce high-tension apparatus room environmental temperature; If lower than 10 ℃ of recommendations, refrigeratory is out of service by a sequence;
Step 4: the indoor environment temperature T of judgement electrical equipment
1Whether higher than 60 ℃, if, judge whether to reach the 100 ℃/contact actuating signal that access fire, smoke alarm actual in the scene of temperature recommendation limit value of setting, Programmable Logic Controller comprehensively judges electrical equipment generation firing accident, the action of refrigeratory control loop, automatically withdraw from the operation of whole refrigeratorys, otherwise, drop into all refrigeratorys.
Programmable Logic Controller U1 arranges control panel and adopts touch-screen as man-machine interface.Realize auto-control, status information, demonstration and user-friendly for operation.Can enter the parameter setting by password, input electric equipment chamber environment temperature startup value, the setting valve of temperature gap, the interval time of temperature signal collection, and the operational mode of modification refrigeratory, the information such as Cooler Fault record.
Principle of work: the electrical equipment of different structure types, the electric equipment chamber of different types, different purposes, different temperature rise requirements, different cooling device configuring conditions are carried out the data pacing of temperature gap voluntarily by Programmable Logic Controller, the refrigeratory of installing is rationally organized into groups, in conjunction with the safety economy technology relatively, the input of control cooling device or out of service, the electrical equipment that guarantees operation is in safe operating ambient temperature at any time, reaches the electric energy composite loss and is in floor level.The setting valve size of temperature gap is relevant with the heating level of equipment, and is often smaller to the temperature gap that the high electrical equipment of heating level needs; Can use the indicated temperature of the temperature sensor that moves electrical equipment self installing or the temperature value that far infrared temperature measurement obtains, combining environmental temperature value and operating experience are comprehensively adjusted to temperature gap.
Compared with prior art, the beneficial effect that the indoor environment temperature intelligence control method of electrical equipment based on temperature gap of the present invention has is, by the demand of dissimilar electrical equipment to indoor environment temperature, facilities, refrigeratory running status and outdoor environment temperature variation for the electric equipment chamber refrigeratory, calculate in real time electric equipment chamber internal and external temperature difference by Programmable Logic Controller, utilize electric equipment chamber internal and external temperature difference as criterion, the temperature environment of the electric equipment operation of Based Intelligent Control; By the adjustment (adjustment definite value) of temperature gap, optimize the environment temperature of electric equipment operation, reduce the unnecessary of refrigeratory and put into operation; When also avoiding the lower and electrical equipment self-heating of indoor environment temperature serious, need cooling and refrigeratory can not put into operation; Make the electric energy of electrical equipment self-heating consumption and the electric energy of refrigeratory input consumption reach the optimal economic state; Simultaneously, Programmable Logic Controller is by the setting to electric equipment chamber excessive temperature limit value, and initial analysis judges whether electrical equipment firing accident occurs, and automatically withdraws from the refrigeratory operation, control accident scope; By the judgement whether electrical equipment is moved, determine whether refrigeratory drops into, the equipment that prevented at shut down condition and refrigeratory still in operation, cause electric energy inaction loss.Can realize accurately controlling and the optimal economic operation, save mass energy.
Description of drawings
Fig. 1 is electrical principle logical diagram of the present invention;
Fig. 2 is control method process flow diagram of the present invention;
Fig. 3 is embodiments of the invention 1 circuit theory diagrams.
In Fig. 1-3: U1, Programmable Logic Controller U2, Temperature Detector U3, current detector U4, voltage monitor J1, starting relay J1-1, starting relay contact J2, electric motor starting contactor J2-1, J2-2 electric motor starting contacts of contactor M1, cooler motor FU1, fuse J3, electrothermal relay J3-1, electrothermal relay contact J4-1, smoke alarm action connection point.
Embodiment
Be described further below in conjunction with 1-3 pairs of embodiments of the invention of accompanying drawing:
As shown in Figure 3:
The indoor environment temperature intelligence controlling device of electrical equipment based on temperature gap of the present invention, the refrigeratory, the Programmable Logic Controller U1 that comprise indoor electric equipment and the indoor installation of electrical equipment, Temperature Detector U2, current detector U3, voltage monitor U4 and refrigeratory state monitor; Temperature Detector U2, current detector U3, voltage monitor U4 and refrigeratory state monitor connect respectively the input end of Programmable Logic Controller U1, the output terminal of Programmable Logic Controller U1 connects starting relay J1, and coil and the fuse FU1 of starting relay contact J1-1, electric motor starting contactor J2 are connected on dc power supply circuit.
The refrigeratory state detector comprises voltage or the current detector of electric motor starting contactor J2, electrothermal relay, electric motor loop, electric motor starting contacts of contactor J2-1 connects the input end of Programmable Logic Controller U1, electric motor starting contacts of contactor J2-2 is arranged on the primary power circuit of cooler motor M1, and electrothermal relay contact J3-1 connects the input end of Programmable Logic Controller U1.
The refrigeratory state detector is arranged on respectively to be organized on refrigeratory.Temperature Detector U2 is arranged on the temperature sensor of electrical equipment indoor and outdoor, and current detector U3 and voltage monitor U4 are arranged on the secondary circuit of current transformer that all power supplys of electrical equipment survey or voltage transformer (VT).Electrothermal relay J3 is arranged near cooler motor M1 self electric power loop.
Programmable Logic Controller can continuously and be controlled many group refrigeratorys according to demand.
Programmable Logic Controller U1 arranges control panel and adopts touch-screen as man-machine interface.Realize auto-control, status information, demonstration and user-friendly for operation.Can enter the parameter setting by password, input electric equipment chamber environment temperature startup value, the setting valve of temperature gap, the interval time of temperature signal collection, and the operational mode of modification refrigeratory, the information such as Cooler Fault record.
The course of work: electrical equipment room cooler duty mainly comprises: the curtage of fan electromotor starting contactor J2, electrothermal relay J3, self electric power loop, and directly with the form access Programmable Logic Controller U1 of empty node.Each side curtage signal of electrical equipment indoor and outdoor temperature signal and electrical equipment after being converted to digital signal through its corresponding detecting device, accesses Programmable Logic Controller U1 by serial communication interface.Programmable Logic Controller U1 is through intelligent decision, by starting relay J1 output control signal, controls the input of electric equipment chamber fan electromotor and out of service through electric motor starting contactor J2.
As shown in Figure 1:
Electrical principle logical diagram of the present invention illustrates with the refrigeratory of electric equipment chamber provided with fan electric machine structure.
At first gather the temperature signal of electrical equipment indoor and outdoor, the voltage and current signal of each side power supply of electrical equipment, carry out the Calculation Comparison analysis, give an order according to the calculation process result, control the action of refrigeratory control loop, withdraw from or drop into certain group or certain refrigeratory by the refrigeratory control loop, each organizes the refrigeratory operating state signal, after processing through state analysis, send fault-signal.
Principle of work: by Programmable Logic Controller to the electric equipment chamber of the electrical equipment of different structure types, different pattern, different purposes, different temperature rises require, different cooling device configuring conditions carries out data pacing voluntarily, the refrigeratory of installing is rationally organized into groups, in conjunction with the safety economy technology relatively, control the input of refrigeratory or out of service with temperature gap as definite value, the electrical equipment that guarantees operation is in safe operating ambient temperature at any time, reaches the comprehensive electric energy loss and is in floor level.
Programmable Logic Controller gathers the temperature signal of electrical equipment indoor and outdoor, gather the operating state signal of each side curtage signal of electrical equipment in service and each group refrigeratory, temperature signal, current signal, voltage signal and status signal are carried out calculation process, according to the calculation process result, control withdrawing from and putting into operation of refrigeratory.The temperature calculation process is according to △ T=T
1-T
2, calculate in real time the temperature gap of electrical equipment indoor and outdoor, wherein △ T is the temperature gap of electrical equipment indoor and outdoor, T
1Be the environment temperature of electrical equipment chamber interior, T
2Physical environment temperature for the electrical equipment outdoor.
The temperature gap of electrical equipment indoor and outdoor of adjusting, Programmable Logic Controller is given an order by definite value, the action of refrigeratory control loop, if temperature gap surpasses 15 ℃ (recommendation), refrigeratory puts into operation by a sequence, to reduce high-tension apparatus room environmental temperature; If lower than 10 ℃ (recommendations), refrigeratory is out of service by a sequence.
Indoor environment temperature (the T of electrical equipment
1) reach the temperature limit (100 ℃ as recommendation) of setting, Programmable Logic Controller judgement electrical equipment generation firing accident, the action of refrigeratory control loop stops the operation of whole refrigeratorys automatically;
Electrical equipment mains side voltage or current value are zero, and the judgement electrical equipment is at shut down condition, and the action of refrigeratory control loop stops the operation of whole refrigeratorys automatically.
Action current or its loop current, voltage signal of Programmable Logic Controller by gathering the refrigeratory relay analyzed its state of judgement, if power supply or motor abnormality send the failure exception signal.
By Programmable Logic Controller setting time voluntarily, rotation refrigeratory operational mode, the input of refrigeratory and out of service can the distribution voluntarily are to improve the whole service life of fan electromotor.
According to the analysis of the environment temperature of electrical equipment indoor and outdoor, according to the regulation of " heating of GB763-1990 ac high-voltage electrical equipment when the long-term work ", when guaranteeing that the electric equipment chamber environment temperature is higher, refrigeratory all puts into operation.Prevent the too high and damage equipment of indoor environment temperature.
The Programmable Logic Controller panel adopts touch-screen as man-machine interface, realizes auto-control, status information, demonstration and user-friendly for operation.Can enter the parameter setting by password, input electric equipment chamber environment temperature startup value, the setting valve of temperature gap, the interval time of temperature signal collection, and the operational mode of modification refrigeratory, the information such as Cooler Fault record.
As shown in Figure 2:
Intelligence control method of the present invention, concrete steps are as follows:
Step 1: at first system carries out self check after starting, and the self check mistake provides fault-signal, gathers electrical equipment indoor and outdoor temperature signal, electric current and the voltage signal of each side power supply of electrical equipment, refrigeratory duty after self check is normal;
Step 2: if the indoor temperature of electrical equipment higher than 40 ℃, sequence drops into refrigeratory and circle collection data; If voltage signal U0=0 cuts off all refrigeratorys;
Step 3: according to △ T=T
1-T
2, calculate in real time, obtain electric equipment chamber internal and external temperature difference △ T, if temperature gap △ T surpasses 15 ℃ of recommendations, refrigeratory puts into operation by a sequence, to reduce high-tension apparatus room environmental temperature; If lower than 10 ℃ of recommendations, refrigeratory is out of service by a sequence;
Step 4: the indoor environment temperature T of judgement electrical equipment
1Whether higher than 60 ℃, if so, judge whether that the temperature that reaches setting recommends 100 ℃ of limit values, Programmable Logic Controller judgement electrical equipment generation firing accident, the operation of whole refrigeratorys is withdrawed from the action of refrigeratory control loop automatically, if not, drop into all refrigeratorys;
The above is only preferred embodiment of the present invention, is not to be the present invention to be done the restriction of other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment does, still belongs to the protection domain of technical solution of the present invention according to technical spirit of the present invention.
Claims (1)
1. based on the indoor environment temperature intelligence control method of the electrical equipment of temperature gap, it is characterized in that: step is as follows:
Step 1: at first system carries out self check after starting, and the self check mistake provides fault-signal, gathers electrical equipment indoor and outdoor temperature signal, electric current and the voltage signal of each side power supply of electrical equipment, refrigeratory duty after self check is normal;
Step 2: if the indoor temperature of electrical equipment higher than 40 ℃, sequence drops into refrigeratory and circle collection data; If voltage signal U
0=0 or current signal I
0=0, cut off all Cooler Power;
Step 3: according to formula △ T=T
1-T
2, calculate in real time, obtain the temperature gap △ T of electrical equipment indoor and outdoor, if temperature gap △ T surpasses 15 ℃ of recommendations, refrigeratory puts into operation by a sequence, to reduce high-tension apparatus room environmental temperature; If lower than 10 ℃ of recommendations, refrigeratory is out of service by a sequence, wherein T
1Be the environment temperature of electrical equipment chamber interior, T
2Physical environment temperature for the electrical equipment outdoor;
Step 4: the indoor environment temperature T of judgement electrical equipment
1Whether higher than 60 ℃, if, the contact actuating signal that judges whether to reach temperature 100 ℃ of the limit values of recommendation of setting or access fire, smoke alarm according to on-the-spot reality, Programmable Logic Controller comprehensively judges electrical equipment generation firing accident, the action of refrigeratory control loop, automatically withdraw from the operation of whole refrigeratorys, otherwise, drop into all refrigeratorys.
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| CN104199497B (en) * | 2014-05-14 | 2017-05-03 | 北京攀藤科技有限公司 | Environmental improvement equipment monitoring device and method |
| CN104214894A (en) * | 2014-08-21 | 2014-12-17 | 珠海格力电器股份有限公司 | Control method of air conditioner |
| CN104793659B (en) * | 2015-04-24 | 2017-04-19 | 山东汇能电气有限公司 | Electrical equipment chamber environment humidity control method and device based on difference comparison |
| CN105716206A (en) * | 2016-03-24 | 2016-06-29 | 国网山东省电力公司东营市东营区供电公司 | Electrical equipment room environment humidity control method based on difference comparison |
| CN110107999B (en) * | 2019-05-29 | 2021-01-08 | 华翔翔能科技股份有限公司 | Factory building air conditioner control method and system |
| CN111337032A (en) * | 2020-03-23 | 2020-06-26 | 黄河勘测规划设计研究院有限公司 | Circulating corner reflector and satellite tracking method thereof |
| CN117498621B (en) * | 2023-10-24 | 2024-04-26 | 江苏微之润智能技术有限公司 | Heat radiation system for motor based on singlechip |
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Address after: Qi Lin Industrial Park No. 127 255086 Shandong province Zibo City Yumin Road hi tech Development Zone Patentee after: SHANDONG DEYOU ELECTRIC CORP., LTD. Address before: Qi Lin Industrial Park No. 127 255086 Shandong province Zibo City Yumin Road hi tech Development Zone Patentee before: Shandong Deyou Electric Co., Ltd. |