CN108235656A - Control method and control system for converter cooling system of wind generating set - Google Patents

Control method and control system for converter cooling system of wind generating set Download PDF

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Publication number
CN108235656A
CN108235656A CN201711487606.2A CN201711487606A CN108235656A CN 108235656 A CN108235656 A CN 108235656A CN 201711487606 A CN201711487606 A CN 201711487606A CN 108235656 A CN108235656 A CN 108235656A
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frequency
temperature
cooling system
detection sensor
converter
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CN201711487606.2A
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CN108235656B (en
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邢波
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Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
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Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20927—Liquid coolant without phase change
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20945—Thermal management, e.g. inverter temperature control

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Inverter Devices (AREA)

Abstract

A control method and a control system for a converter cooling system of a wind generating set comprise the following steps: the cooling system of the converter of the wind generating set comprises a frequency converter, a circulating pump, the converter, an inlet temperature detection sensor positioned at an inlet of the converter and an outlet temperature detection sensor positioned at an outlet of the converter; calculating a temperature difference according to the inlet temperature detected by the inlet temperature detection sensor and the outlet temperature detected by the outlet temperature detection sensor; and controlling the frequency of the frequency converter according to the temperature difference, controlling the frequency of the circulating pump by the frequency of the frequency converter, and adjusting the cooling liquid amount of the cooling system by the circulating pump. After the embodiment of the invention is adopted, the converter can be radiated in time, and the normal operation of the wind generating set is ensured.

Description

The control method and control system of wind driven generator set converter cooling system
Technical field
The present invention relates to technical field of wind power generation more particularly to a kind of controls of wind driven generator set converter cooling system Method and control system processed.
Background technology
Wind power generating set is installed in the more arduous isolated area of condition more, therefore stablizing for wind power generating set is transported Row becomes particularly important.Even the problem of very little can cause the state of the irregular operation of wind power generating set, it is both needed to A large amount of manpower and materials are put into work, to eliminate influence of the problem to wind power generating set.
The current transformer of wind power generating set is the non-standard frequencies that send out the generator of wind power generating set and non-standard The equipment that the electric energy of voltage is converted into the frequency of grid requirements and the electric energy of voltage.
In the work of current transformer, a large amount of heat can be generated.It is general at this time to use corresponding cold and hot switching technology, with band Walk heat caused by current transformer.Cooling system is exactly a kind of heat band for being generated current transformer using water or coolant therein The system walked.
However, since heat dissipation causes current transformer excess temperature, and then wind power generating set stoppage protection is caused to be sent out repeatedly not in time It is raw.
Invention content
An embodiment of the present invention provides a kind of control method and control system of wind driven generator set converter cooling system, It can radiate in time for current transformer, ensure the normal operation of wind power generating set.
A kind of control method of wind driven generator set converter cooling system, including：
The wind driven generator set converter cooling system include frequency converter, circulating pump, current transformer, positioned at the current transformer The inlet temperature detection sensor of import and the outlet temperature detection sensor positioned at current transformer outlet；
The inlet temperature detected according to the inlet temperature detection sensor and outlet temperature detection sensor detection Outlet temperature calculate temperature difference；
According to the frequency of the temperature difference control frequency converter, the frequency of circulating pump as described in the Frequency Converter Control, The cooling liquid measure of the cooling system is adjusted by the circulating pump.
The frequency that the frequency converter is controlled according to the temperature difference, including：
The temperature difference is less than or equal to the standard temperature difference, then the frequency for keeping the frequency converter is constant；
The temperature difference is more than the standard temperature difference, then improves the frequency of the frequency converter.
The frequency for improving the frequency converter, including：
A, the frequency of the frequency converter is improved into product to original frequency and coefficient of frequency, the coefficient of frequency is basis The parameter that periodicity determines；
B, judge whether the temperature difference is more than the standard temperature difference in next period；
If c, the temperature difference is less than or equal to the standard temperature difference, the frequency for keeping the frequency converter is constant；
If d, the temperature difference is more than the standard temperature difference and the frequency of the frequency converter is less than frequency max-thresholds, return Return a；
If e, the temperature difference is more than the standard temperature difference and the frequency of the frequency converter is equal to frequency max-thresholds, send out Go out warning.The wind driven generator set converter cooling system further includes triple valve and radiator；
The method further includes：
The inlet temperature of the inlet temperature detection sensor detection is more than inlet temperature standard highest threshold value, then opens institute Triple valve is stated, flows through after the water of the current transformer is radiated by the triple valve by the radiator and is back to the unsteady flow Device；
The inlet temperature of the inlet temperature detection sensor detection is less than inlet temperature standard lowest threshold, then closes institute State triple valve.
The wind driven generator set converter cooling system further includes the DIE Temperature detection inside the current transformer Sensor；
DIE Temperature inside the current transformer of the DIE Temperature detection sensor detection is more than shutdown threshold, then controls It makes the wind power generating set and stops power generation, the shutdown threshold is more than the inlet temperature standard highest threshold value.
The wind driven generator set converter cooling system further includes heater；
The method further includes
The inlet temperature of the inlet temperature detection sensor detection is less than or equal to heating threshold value, then controls the heater Start the cooling liquid stream that heating inputs the current transformer；
More than or equal to heating threshold value is stopped, then control is described adds the inlet temperature of the inlet temperature detection sensor detection Hot device stops the cooling liquid stream that heating inputs the current transformer,
The heating threshold value is less than the stopping and adds in threshold value, and the heating threshold value that stops is less than the inlet temperature standard Lowest threshold.
The wind driven generator set converter cooling system further includes the DIE Temperature detection inside the current transformer Sensor；
The inlet temperature based on inlet temperature detection sensor detection and the outlet temperature detection sensor Before the outlet temperature of detection calculates temperature difference, further include：
The DIE Temperature unit of account inside the current transformer detected in real time based on the DIE Temperature detection sensor Internal temperature rise in time；
The internal temperature rise is less than or equal to Standard internal Wen Sheng.
The wind driven generator set converter cooling system further includes triple valve and radiator；
DIE Temperature inside the current transformer detected in real time based on the DIE Temperature detection sensor is calculated After internal temperature rise in unit interval, further include：
The internal temperature rise is more than Standard internal Wen Sheng, then the frequency of the frequency converter is equal to frequency max-thresholds, by institute The frequency of circulating pump described in Frequency Converter Control is stated, the cooling liquid measure of the cooling system is adjusted by the circulating pump；
The triple valve is opened, the coolant for flowing through the current transformer is radiated by the triple valve by the radiator After be back to the current transformer.
The wind driven generator set converter cooling system further includes the environment temperature detection sensor of wind power generating set；
The environment temperature of the environment temperature detection sensor monitoring is less than or equal to environment temperature threshold value, then the import temperature The quasi- highest threshold value of scale remains unchanged, and the inlet temperature standard lowest threshold remains unchanged；
The environment temperature of the environment temperature detection sensor monitoring is more than environment temperature threshold value, then the inlet temperature mark Quasi- highest threshold value is reduced to inlet temperature and stablizes highest threshold value, and it is steady that the inlet temperature standard lowest threshold is reduced to inlet temperature Determine lowest threshold.
The wind driven generator set converter cooling system further includes the environment temperature detection sensor of wind power generating set；
The inlet temperature based on inlet temperature detection sensor detection and the outlet temperature detection sensor Before the outlet temperature of detection calculates temperature difference, further include：
The environment Wen Sheng in the environment temperature unit of account time detected in real time according to the environment temperature detection sensor；
The environment Wen Sheng is less than or equal to standard environment Wen Sheng.
The wind driven generator set converter cooling system further includes triple valve and radiator；
Environment in the environment temperature unit of account time detected in real time based on the environment temperature detection sensor After Wen Sheng, further include：
The environment Wen Sheng is more than standard environment Wen Sheng, then the frequency of the frequency converter is equal to frequency max-thresholds, by institute The frequency of circulating pump described in Frequency Converter Control is stated, the cooling liquid measure of the cooling system is adjusted by the circulating pump；
The triple valve is opened, the coolant for flowing through the current transformer is radiated by the triple valve by the radiator After be back to the current transformer.
The wind driven generator set converter cooling system further includes the environment temperature detection sensor of wind power generating set With wind power prediction device；
The inlet temperature based on inlet temperature detection sensor detection and the outlet temperature detection sensor Before the outlet temperature of detection calculates temperature difference, further include：
The environment temperature that the environment temperature detection sensor detects in real time is less than or equal to environment temperature max-thresholds or institute The wind speed stated in wind power prediction device prediction future time period is less than or equal to wind speed max-thresholds.
The wind driven generator set converter cooling system further includes triple valve and radiator；
The method further includes：
The environment temperature that the environment temperature detection sensor detects in real time is more than environment temperature max-thresholds, and the wind In the case that wind speed in powder prediction device prediction future time period is more than wind speed max-thresholds,
The frequency of the frequency converter is equal to frequency max-thresholds, and the frequency of circulating pump as described in the Frequency Converter Control is led to Cross the cooling liquid measure that the circulating pump adjusts the cooling system；
The triple valve is opened, the coolant for flowing through the current transformer is radiated by the triple valve by the radiator After be back to the current transformer.
A kind of control system of wind driven generator set converter cooling system, the control system include wind power generating set Cooling system for converter and controller；
The wind driven generator set converter cooling system include frequency converter, circulating pump, current transformer, positioned at the current transformer The inlet temperature detection sensor of import and the outlet temperature detection sensor positioned at current transformer outlet；
The controller, for the inlet temperature detected according to the inlet temperature detection sensor and the outlet temperature The outlet temperature of detection sensor detection calculates temperature difference；
The controller, for controlling the frequency of the frequency converter according to the temperature difference, by the Frequency Converter Control institute The frequency of circulating pump is stated, the cooling liquid measure of the cooling system is adjusted by the circulating pump.
The controller is less than or equal to the standard temperature difference specifically for the temperature difference, then sets the frequency of the frequency converter Equal to original frequency；
The temperature difference is more than the standard temperature difference, then improves the frequency of the frequency converter.
The controller, is specifically used for
A, the frequency of the frequency converter is improved into product to original frequency and coefficient of frequency, the coefficient of frequency is basis The parameter that periodicity determines；
B, judge whether the temperature difference is more than the standard temperature difference in next period；
If c, the temperature difference is less than or equal to the standard temperature difference, the frequency for keeping the frequency converter is constant；
If d, the temperature difference is more than the standard temperature difference and the frequency of the frequency converter is less than frequency max-thresholds, return Return a；
If e, the temperature difference is more than the standard temperature difference and the frequency of the frequency converter is equal to frequency max-thresholds, send out Go out warning.The wind driven generator set converter cooling system further includes triple valve and radiator；
The inlet temperature of the inlet temperature detection sensor detection is more than inlet temperature standard highest threshold value, the then control Device processed controls the triple valve to open, and the coolant for flowing through the current transformer is radiated by the triple valve by the radiator After be back to the current transformer；
The inlet temperature of the inlet temperature detection sensor detection is less than inlet temperature standard lowest threshold, the then control Device processed controls the triple valve to close.
The wind driven generator set converter cooling system further includes the DIE Temperature detection inside the current transformer Sensor；
DIE Temperature inside the current transformer of the DIE Temperature detection sensor detection is more than shutdown threshold, then institute Stating controller controls the wind power generating set to stop power generation, and the shutdown threshold is more than the inlet temperature standard highest threshold Value.
The wind driven generator set converter cooling system further includes heater；
The inlet temperature of the inlet temperature detection sensor detection is less than or equal to heating threshold value, then the controller control The heater starting heating inputs the cooling liquid stream of the current transformer；
The inlet temperature of the inlet temperature detection sensor detection, which is more than or equal to, stops heating threshold value, then the controller The heater is controlled to stop the cooling liquid stream that heating inputs the current transformer,
The heating threshold value is less than the stopping and adds in threshold value, and the heating threshold value that stops is less than the inlet temperature standard Lowest threshold.
The wind driven generator set converter cooling system further includes the DIE Temperature detection inside the current transformer Sensor；
The controller is additionally operable to inside the current transformer detected in real time based on the DIE Temperature detection sensor Internal temperature rise in the DIE Temperature unit of account time；
The internal temperature rise is less than or equal to Standard internal Wen Sheng.
The wind driven generator set converter cooling system further includes triple valve and radiator；
The internal temperature rise is more than Standard internal Wen Sheng, then the controller sets the frequency of the frequency converter to be equal to frequency Max-thresholds, the frequency of circulating pump as described in the Frequency Converter Control adjust the cold of the cooling system by the circulating pump But liquid measure；
The controller controls the triple valve to open, and flows through the coolant of the current transformer by the triple valve by institute The current transformer is back to after stating radiator heat dissipation.
The wind driven generator set converter cooling system further includes the environment temperature detection sensor of wind power generating set；
The environment temperature of the environment temperature detection sensor monitoring is less than or equal to environment temperature threshold value, then the controller The inlet temperature standard highest threshold value is controlled to remain unchanged and control the inlet temperature standard lowest threshold to keep not Become；
The environment temperature of the environment temperature detection sensor monitoring is more than environment temperature threshold value, then the controller control The inlet temperature standard highest threshold value is reduced to inlet temperature and stablizes highest threshold value and the controller control import Temperature standard lowest threshold is reduced to inlet temperature and stablizes lowest threshold.
The wind driven generator set converter cooling system further includes the environment temperature detection sensor of wind power generating set；
The controller is additionally operable to the environment temperature unit of account detected in real time according to the environment temperature detection sensor Environment Wen Sheng in time；
The environment Wen Sheng is less than or equal to standard environment Wen Sheng.
The wind driven generator set converter cooling system further includes triple valve and radiator；
The environment Wen Sheng is more than standard environment Wen Sheng, then the controller sets the frequency of the frequency converter to be equal to frequency Max-thresholds, the frequency of circulating pump as described in the Frequency Converter Control adjust the cold of the cooling system by the circulating pump But liquid measure；
The controller controls the triple valve to open, and flows through the coolant of the current transformer by the triple valve by institute The current transformer is back to after stating radiator heat dissipation.
The wind driven generator set converter cooling system further includes the environment temperature detection sensor of wind power generating set With wind power prediction device；
The controller is additionally operable to determine that the environment temperature that the environment temperature detection sensor detects in real time is less than or equal to Environment temperature max-thresholds determine that the wind speed in the wind power prediction device prediction future time period is less than or equal to wind speed Max-thresholds.
The wind driven generator set converter cooling system further includes triple valve and radiator；
The controller is additionally operable to determine that the environment temperature that the environment temperature detection sensor detects in real time is more than environment Maximum temperature threshold value, and the wind speed in wind power prediction device prediction future time period is more than wind speed max-thresholds；
Determine that the environment Wen Sheng is more than standard environment Wen Sheng, then the controller sets the frequency of the frequency converter to be equal to Frequency max-thresholds, the frequency of circulating pump as described in the Frequency Converter Control adjust the cooling system by the circulating pump Cooling liquid measure；
The controller controls the triple valve to open, and flows through the coolant of the current transformer by the triple valve by institute The current transformer is back to after stating radiator heat dissipation.
The controller is the programmable logic device PLC of the wind power generating set.
From above-mentioned technical proposal as can be seen that according to the inlet temperature that inlet temperature detection sensor detects and outlet temperature The outlet temperature for spending detection sensor detection calculates temperature difference, and then according to the frequency of temperature difference control frequency converter, by frequency converter The frequency of the circulating pump is controlled, the cooling liquid measure of cooling system is adjusted by circulating pump.Temperature difference can react rapidly unsteady flow The temperature of device is adjusted the cooling liquid measure of cooling system by the frequency of frequency converter based on temperature difference, can be dissipated in time for current transformer Heat ensures the normal operation of wind power generating set.
Description of the drawings
From below in conjunction with the accompanying drawings to the present invention specific embodiment description in may be better understood the present invention wherein, The same or similar reference numeral represents the same or similar feature.
Fig. 1 is the control system signal of wind power generating set cooling system for converter structure in first embodiment of the invention Figure；
Fig. 2 is the control method flow signal of wind power generating set cooling system for converter in first embodiment of the invention Figure；
Fig. 3 is the control system signal of wind power generating set cooling system for converter structure in second embodiment of the invention Figure；
Fig. 4 is the control method flow signal of wind power generating set cooling system for converter in second embodiment of the invention Figure；
Fig. 5 is the control system signal of wind power generating set cooling system for converter structure in third embodiment of the invention Figure；
Fig. 6 is the control method flow signal of wind power generating set cooling system for converter in fourth embodiment of the invention Figure；
Fig. 7 is the flow diagram according to the frequency of temperature difference control frequency converter in the embodiment of the present invention.
Specific embodiment
For the object, technical solutions and advantages of the present invention is made to express to be more clearly understood, below in conjunction with the accompanying drawings and specifically The present invention is further described in more detail for embodiment.
In embodiments of the present invention, the inlet temperature and outlet temperature detected first according to inlet temperature detection sensor is examined The outlet temperature for surveying sensor detection calculates temperature difference, and then according to the frequency of temperature difference control frequency converter, by Frequency Converter Control The frequency of the circulating pump adjusts the cooling liquid measure of cooling system by circulating pump.Temperature difference can react rapidly current transformer Temperature adjusts the cooling liquid measure of cooling system based on temperature difference by the frequency of frequency converter, can radiate, protect for current transformer in time Demonstrate,prove the normal operation of wind power generating set.
Referring to Fig. 1, Fig. 1 is the control system knot of wind power generating set cooling system for converter in first embodiment of the invention Structure schematic diagram.
In Fig. 1 wind power generating set cooling system for converter include frequency converter 101, circulating pump 1, current transformer 2, positioned at unsteady flow The inlet temperature detection sensor 10 of 2 import of device and the outlet temperature detection sensor 11 positioned at current transformer outlet.
The control system of wind power generating set cooling system for converter is in wind driven generator set converter cooling system in Fig. 1 Increase controller 8 on the basis of system.Controller 8 can be the programmable logic device (PLC) of wind power generating set.
The detection of inlet temperature detection sensor 10 enters inlet temperature during current transformer 2, and inlet temperature is sent to control Device 8 processed.The outlet temperature of the detection outflow current transformer 2 of outlet temperature detection sensor 11, and outlet temperature is sent to controller 8。
Referring to Fig. 2, Fig. 2 is the control method stream of wind power generating set cooling system for converter in first embodiment of the invention Journey schematic diagram, including：
What S201, the inlet temperature detected according to inlet temperature detection sensor and outlet temperature detection sensor detected goes out Mouth temperature computation temperature difference.
The inlet temperature and outlet temperature detection sensor 11 that controller 8 is detected according to inlet temperature detection sensor 10 are examined The outlet temperature of survey calculates temperature difference.As an example, temperature difference is equal to the difference of outlet temperature and inlet temperature.
S202, the frequency according to temperature difference control frequency converter, the frequency of circulating pump as described in Frequency Converter Control pass through cycle The cooling liquid measure of pump adjustment cooling system.
Frequency converter 101 is by the frequency of FREQUENCY CONTROL circulating pump 1, and the frequency of circulating pump 1 is bigger, then into current transformer 2 Cooling liquid measure is bigger, and the radiating rate of corresponding current transformer is accelerated, so that it is guaranteed that the temperature of current transformer 2 will not be excessively high.
The temperature of current transformer can be reacted rapidly in view of temperature difference, then can control frequency converter 101 according to temperature difference Frequency, by the frequency of the FREQUENCY CONTROL circulating pump 1 of frequency converter 101, by the frequency of the FREQUENCY CONTROL circulating pump 1 of frequency converter 101, Circulating pump 1 adjusts the cooling liquid measure of cooling system.
In embodiments of the present invention, the heat dissipating state of current transformer 2 sensitive can be known based on temperature difference, then according to temperature The frequency of difference control frequency converter 101, so as to indirectly by the frequency of the FREQUENCY CONTROL circulating pump 1 of frequency converter 101, pass through frequency converter The frequency of 101 FREQUENCY CONTROL circulating pump 1 adjusts the cooling liquid measure of cooling system by circulating pump 1, ensures that current transformer normally dissipates Heat, so as to the normal operation of wind power generating set.
Referring to Fig. 3, Fig. 3 is the control system knot of wind power generating set cooling system for converter in second embodiment of the invention Structure schematic diagram.
The control system of wind power generating set cooling system for converter includes frequency converter 101, circulating pump 1, current transformer in Fig. 3 2nd, the inlet temperature detection sensor 10 positioned at 2 import of current transformer, positioned at current transformer outlet outlet temperature detection sensor 11, DIE Temperature detection sensor 12, heater 9, triple valve 6, radiator 3 and controller 8 inside current transformer.
That is, system increases the DIE Temperature inside current transformer on the basis of Fig. 1 control systems in Fig. 3 Detection sensor 12, heater 9, triple valve 6 and radiator 3.
DIE Temperature detection sensor 12 detects the DIE Temperature inside current transformer 2.Heater 9 flows through heating for heating The cooling liquid stream of device 9.Open triple valve 6 then flow through current transformer 2 coolant radiated by triple valve 6 by radiator 3 after return It flow to current transformer 2.
Referring to Fig. 4, Fig. 4 is the control method stream of wind power generating set cooling system for converter in second embodiment of the invention Journey schematic diagram, including：
The inlet temperature that S401, inlet temperature detection sensor detect is more than inlet temperature standard highest threshold value, then opens Triple valve, flow through current transformer coolant radiated by triple valve by radiator after be back to current transformer.
The inlet temperature of detection is sent to controller 8 by inlet temperature detection sensor 10.Controller 8 is according to inlet temperature Compared with inlet temperature standard highest threshold value.
If inlet temperature is more than inlet temperature standard highest threshold value, illustrating that the temperature of current transformer 2 is excessively high needs to radiate.Into And controller 8 control triple valve 6 open, flow through current transformer 2 coolant radiated by triple valve 6 by radiator 3 after flow back To current transformer 2.
If inlet temperature is less than or equal to inlet temperature standard highest threshold value, illustrates the temperature of current transformer 2 normally and be not required to Triple valve 6 is opened to radiate.And then controller 8 controls triple valve 6 to close.
The inlet temperature that S402, inlet temperature detection sensor detect is less than inlet temperature standard lowest threshold, then closes Triple valve.
The inlet temperature of detection is sent to controller 8 by inlet temperature detection sensor 10.Controller 8 is according to inlet temperature Compared with inlet temperature standard lowest threshold.
If inlet temperature is more than inlet temperature standard lowest threshold, illustrate current transformer 2 there is still a need for being dissipated by triple valve 6 Heat, controller 8 control triple valve 6 to open.
If inlet temperature is less than or equal to inlet temperature standard lowest threshold, illustrates the temperature of current transformer 2 normally and be not required to It to be radiated by triple valve 6.And then controller 8 controls triple valve 6 to close.
It should be noted that inlet temperature standard lowest threshold is less than inlet temperature standard highest threshold value.Inlet temperature standard Highest threshold value and inlet temperature standard lowest threshold are empirical value.
There is no priority to perform sequence by S401 and S402, can be based on inlet temperature, inlet temperature standard highest threshold value With the relationship of inlet temperature standard lowest threshold, the folding of triple valve 6 is determined.
In embodiments of the present invention, can determine whether to open triple valve 6 according to inlet temperature.By controlling triple valve 6 Folding can ensure current transformer proper heat reduction, so as to the normal operation of wind power generating set.
In one embodiment of the invention, DIE Temperature detection sensor 12 can detect the core inside current transformer 2 Temperature, and DIE Temperature is sent to controller 8.
Controller 8 determines that the DIE Temperature inside the current transformer 2 that DIE Temperature detection sensor 12 detects is more than and shuts down threshold Value in order to which current transformer 2 is not by high-temperature damage, then controls wind power generating set to stop power generation.Wherein, shutdown threshold is more than import temperature The quasi- highest threshold value of scale.
In one embodiment of the invention, the inlet temperature that can also be detected by inlet temperature detection sensor 10 is true It is fixed whether to need heater 9 to heat the cooling liquid stream of input current transformer 2.
Specifically, controller 8 judges that the inlet temperature that inlet temperature detection sensor 10 detects is less than or equal to heating threshold Value illustrates that the coolant temperature for inputting the cooling liquid stream of current transformer 2 can not meet the normal demand of current transformer 2, then controller 8 is controlled Heater 9 processed starts the cooling liquid stream of heating input current transformer 2.
The inlet temperature that the inlet temperature detection sensor 10 that controller 8 judges detects, which is more than or equal to, stops heating threshold value, says The coolant temperature of the cooling liquid stream of bright input current transformer 2 can meet the normal demand of current transformer 2, then the control of controller 8 adds Hot device 9 stops the cooling liquid stream of heating input current transformer 2.
Stop adding in threshold value it should be noted that heating threshold value is less than.
From two embodiments of above-mentioned Fig. 2 and Fig. 4 it is found that the technical solution in Fig. 2 and Fig. 4 can ensure current transformer 2 Proper heat reduction.The technical solution of Fig. 2 is by controlling the frequency Indirect method of frequency converter 101 by the coolant of current transformer 2 Amount.Technical solution in Fig. 4 is by the way that the folding of triple valve 6 is controlled to radiate for current transformer 3.Above-mentioned two technical solution can be single It solely realizes, use can also be cooperateed with, i.e., the sequencing that the embodiment of Fig. 2 and the embodiment of Fig. 4 are not carried out also may be used certainly To be performed simultaneously, preferably radiate for current transformer 2, reach preferable heat dissipation effect.
In one embodiment of the invention, DIE Temperature detection sensor 12 is also based on before S201 to examine in real time DIE Temperature inside the current transformer 2 of survey, the internal temperature rise in the unit of account time.What DIE Temperature detection sensor 12 detected DIE Temperature will be for controlling the heat dissipation of current transformer 2 in advance.
Controller 8 determines that the internal temperature rise in the unit interval is less than or equal to Standard internal Wen Sheng, then illustrates dissipating for current transformer 2 Heat does not need to control in advance in control range.
And controller 8 determines that the internal temperature rise in the unit interval is more than Standard internal Wen Sheng, then illustrates the heat dissipation of current transformer 2 It does not need to control in advance in control range.
The technical solution in Fig. 2 and Fig. 4 can be used simultaneously, i.e.,：Controller 8 sets the frequency of frequency converter 101 to be equal to frequency By the frequency of the FREQUENCY CONTROL circulating pump 1 of frequency converter 101, the coolant of cooling system is adjusted by circulating pump 1 for rate max-thresholds Amount.
At the same time, controller 8 controls triple valve 6 to open, and flows through the coolant of current transformer 2 by triple valve 6 by radiating Device 3 is back to current transformer 2 after radiating.
Simultaneously using the technical solution in Fig. 2 and Fig. 4, the temperature of current transformer 2 can be reduced rapidly, reaches preferable heat dissipation Effect, so as to the normal operation of wind power generating set.
Referring to Fig. 5, Fig. 5 is the control system knot of wind power generating set cooling system for converter in third embodiment of the invention Structure schematic diagram.
In Fig. 5 wind power generating set cooling system for converter include frequency converter 101, circulating pump 1, current transformer 2, positioned at unsteady flow The inlet temperature detection sensor 10 of 2 import of device, positioned at current transformer outlet outlet temperature detection sensor 11, positioned at current transformer The environment temperature inspection of internal DIE Temperature detection sensor 12, heater 9, triple valve 6, radiator 3, wind power generating set Survey sensor 102 and controller 8.
That is, system increases the environment temperature detection of wind power generating set on the basis of system in figure 3 in Fig. 5 Sensor 102.The environment temperature detection sensor 102 of wind power generating set can real-time monitor environment temperature.Environment temperature The environment temperature of monitoring can be sent to controller 8 by detection sensor 102.
Controller 8 determines that the environment temperature that environment temperature detection sensor 102 monitors is less than or equal to environment temperature threshold value, then Controller 8 controls inlet temperature standard highest threshold value to remain unchanged and control inlet temperature standard lowest threshold to remain unchanged.
That is, when environment temperature detection sensor 102 monitor environment temperature in environment temperature threshold value hereinafter, then without Inlet temperature standard highest threshold value and inlet temperature standard lowest threshold need to be adjusted.
Controller 8 determines that the environment temperature that environment temperature detection sensor 102 monitors is more than environment temperature threshold value, then illustrates The variation of environment temperature can influence the heat dissipation of current transformer 2, thus controller 8 control inlet temperature standard highest threshold value be reduced into Mouth temperature stablizes highest threshold value and control inlet temperature standard lowest threshold is reduced to inlet temperature and stablizes lowest threshold.
In this way, the variation with environment temperature by adjusting inlet temperature standard highest threshold value and inlet temperature standard most Low threshold is to accelerate the heat dissipation of current transformer 2.
In one embodiment of the invention, environment temperature detection sensor 102 is also based on before S201 to monitor The environment temperature unit of account time in environment Wen Sheng.Environment temperature detection sensor 102 can real-time monitor environment temperature Degree.
Controller 8 determines that environment Wen Sheng is less than or equal to standard environment Wen Sheng, then illustrates the heat dissipation of current transformer 2 in control range It does not need to inside control in advance.
Controller 8 determines that environment Wen Sheng is more than standard environment Wen Sheng, then illustrates the heat dissipation of current transformer 2 not in control range It needs to control in advance.
The technical solution in Fig. 2 and Fig. 4 can be used simultaneously, i.e.,：Controller 8 sets the frequency of frequency converter 101 to be equal to frequency By the frequency of the FREQUENCY CONTROL circulating pump 1 of frequency converter 101, the coolant of cooling system is adjusted by circulating pump 1 for rate max-thresholds Amount.
At the same time, controller 8 controls triple valve 6 to open, and flows through the coolant of current transformer 2 by triple valve 6 by radiating Device 3 is back to current transformer 2 after radiating.
Simultaneously using the technical solution in Fig. 2 and Fig. 4, the temperature of current transformer 2 can be reduced rapidly, reaches preferable heat dissipation Effect, so as to the normal operation of wind power generating set.
Referring to Fig. 6, Fig. 6 is the control system knot of wind power generating set cooling system for converter in fourth embodiment of the invention Structure schematic diagram.
In Fig. 6 wind power generating set cooling system for converter include frequency converter 101, circulating pump 1, current transformer 2, positioned at unsteady flow The inlet temperature detection sensor 10 of 2 import of device, positioned at current transformer outlet outlet temperature detection sensor 11, positioned at current transformer The environment temperature inspection of internal DIE Temperature detection sensor 12, heater 9, triple valve 6, radiator 3, wind power generating set Survey sensor 102, wind power prediction device 103 and controller 8.
That is, system increases wind power prediction device 103 on the basis of system in Figure 5 in Fig. 6.Wind power is pre- Survey device 103 can predict the wind speed in future time period.Wherein, the time cycle is pre-set, can be several small When or several days.Wind power prediction device 103 will predict that the wind speed in future time period is sent to controller 8.
In one embodiment of the invention, it is real-time that environment temperature detection sensor 102 is also based on before S201 The environment temperature of monitoring predicts future time period with the relationship of environment temperature max-thresholds and wind power prediction device 103 Interior wind speed and wind speed max-thresholds relationship, adjust the heat dissipation of current transformer.
Controller 8 determines that the environment temperature that environment temperature detection sensor 102 monitors in real time is less than or equal to environment temperature most Big threshold value or wind power prediction device 103 predict that the wind speed in future time period is less than or equal to wind speed max-thresholds, then perform S201。
Wherein, wind speed max-thresholds are equal to rated wind speed value when wind power generating set presses theoretical Operation at full power.
Controller 8 determines that the environment temperature that environment temperature detection sensor 102 monitors in real time is more than environment temperature maximum threshold Value, and wind power prediction device 103 predicts that the wind speed in future time period is more than wind speed max-thresholds, then illustrates wind-power electricity generation Unit Operation at full power, the temperature of current transformer 2 may be flown up, and urgent need radiates.
The technical solution in Fig. 2 and Fig. 4 can be used simultaneously, i.e.,：Controller 8 sets the frequency of frequency converter 101 to be equal to frequency By the frequency of the FREQUENCY CONTROL circulating pump 1 of frequency converter 101, the coolant of cooling system is adjusted by circulating pump 1 for rate max-thresholds Amount.
At the same time, controller 8 controls triple valve 6 to open, and flows through the coolant of current transformer 2 by triple valve 6 by radiating Device 3 is back to current transformer 2 after radiating.
Simultaneously using the technical solution in Fig. 2 and Fig. 4, the temperature of current transformer 2 can be reduced rapidly, reaches preferable heat dissipation Effect, so as to the normal operation of wind power generating set.
With reference to the specific example technical solution that the present invention will be described in detail.
First, with reference to the Control system architecture of the wind driven generator set converter cooling system in attached drawing 1 with regard to the present invention's Technical solution illustrates.
Frequency converter 101 can provide the frequency of 0-50 hertz of (HZ) FREQUENCY CONTROL circulating pumps 1, enter current transformer to reach control The purpose of 2 cooling liquid measures.Wind power generating set sets the frequency P of frequency converter 101 after starting.
The inlet temperature detected positioned at the inlet temperature detection sensor 10 of 2 import of current transformer is a, is gone out positioned at current transformer The outlet temperature that the outlet temperature detection sensor 11 of mouth detects is b.Temperature difference c=b-a.
It can be with the frequency of frequency converter 101, the established standards temperature difference by temperature difference.Referring to Fig. 7, Fig. 7 is the embodiment of the present invention The flow diagram of the middle frequency according to temperature difference control frequency converter.
After wind power generating set starts, circulating pump 1 is first operated according to original frequency P.At this point, inlet temperature detection sensing The inlet temperature that device 10 detects is a, and the outlet temperature that outlet temperature detection sensor 11 detects is b, temperature difference c=b-a. It is that b is more than a in wind power generating set work, when wind power generating set is shut down, b is equal with a.
S701, judge that temperature difference is more than the standard temperature difference.If temperature difference is more than the standard temperature difference, S703 is performed；If temperature difference Less than or equal to the standard temperature difference, then S702 is performed.
S702, keep the frequency of frequency converter 101 constant.
Temperature difference is less than or equal to the standard temperature difference, then it is assumed that when current frequency operates, cooling liquid measure is sufficiently used for circulating pump 1 Current transformer 2 radiates, and circulating pump 1 does not need to improve frequency, keeps current frequency operation.The initial value of current frequency is original frequency P。
S703, the frequency according to original frequency and coefficient of frequency raising frequency converter.
Temperature difference is more than the standard temperature difference, then it is assumed that circulating pump 1 cools down liquid measure not to meet unsteady flow when original frequency operates Device 2 radiates, and needs to improve the frequency of circulating pump 1.The frequency of circulating pump 1 improves the product to original frequency and coefficient of frequency, frequency Rate coefficient is the parameter determined according to periodicity.
Coefficient of frequency is equal to 1.2 Nth power, and N is periodicity, and the frequency of circulating pump 1 is increased to p=P* in the period 1 1.2。
Correspondingly, the frequency of circulating pump 1 is increased to p=P*1.2*1.2 in second round, and so on.
S704, judge that the frequency of frequency converter is equal to frequency max-thresholds, if the frequency of frequency converter is equal to frequency max-thresholds, Then perform S705；If the frequency of frequency converter is less than frequency max-thresholds, S701 is performed.
S705, needs quote warning, and staff is reminded to be safeguarded.
In the following, with reference to the wind driven generator set converter cooling system in attached drawing 3 Control system architecture just the present invention Technical solution illustrates.
The detection of inlet temperature detection sensor 10 enters inlet temperature during current transformer 2, and inlet temperature is sent to control Device 8 processed.Outlet temperature during the detection outflow current transformer 2 of outlet temperature detection sensor 11, and outlet temperature is sent to control Device 8.DIE Temperature detection sensor 12 detects the DIE Temperature inside current transformer 2, and DIE Temperature is sent to control 8.
Using inlet temperature as benchmark, the mode into the coolant temperature of current transformer 2 is controlled to carry out the control into trip temperature System.
The inlet temperature when detection of inlet temperature detection sensor 10 enters current transformer 2 is higher than inlet temperature standard highest threshold Value A, controller 8 control triple valve 6 open, flow through current transformer 2 coolant radiated by triple valve 6 by radiator 3 after return It flow to current transformer 2.
If the inlet temperature inlet temperature when detection of inlet temperature detection sensor 10 enters current transformer 2 is less than or equal to import Temperature standard lowest threshold B then illustrates that the temperature of current transformer 2 normally needs not move through triple valve 6 and radiates.And then controller 8 Control triple valve 6 is closed.Wherein, A is more than B.
In addition, set temperature D is heating threshold value.
When the inlet temperature that inlet temperature detection sensor 10 detects is less than D, then controller 8 controls heater 9 to start The cooling liquid stream of heating input current transformer 2.
When the inlet temperature that inlet temperature detection sensor 10 detects is more than or equal to D, then controller 8 controls heater 9 Stop the cooling liquid stream of heating input current transformer 2.
Wherein, temperature A>Temperature B>Temperature E>Temperature D.
In addition, DIE Temperature detection sensor 12 can detect the DIE Temperature inside current transformer 2, and DIE Temperature is sent out It send to controller 8.
Controller 8 determines that the DIE Temperature inside the current transformer 2 that DIE Temperature detection sensor 12 detects is more than and shuts down threshold Value, shutdown threshold are equal to temperature C, in order to which current transformer 2 is not by high-temperature damage, then wind power generating set are controlled to stop power generation.Wherein, Temperature C>Temperature A.
It is an example below：
A=33 °；B=29 °；D=10 °；E=15 °；C=65 °.
When the inlet temperature that in wind power generating set operational process, inlet temperature detection sensor 10 detects is more than 33 °, It then needs to open triple valve 6, be radiated by radiator 3.
After triple valve 6 are opened, the inlet temperature that inlet temperature detection sensor 10 detects gradually reduces.Inlet temperature When falling below 29 °, triple valve 6 is closed.
When the inlet temperature that inlet temperature detection sensor 10 detects is less than 10 °, heater 9 starts；
When the inlet temperature that inlet temperature detection sensor 10 detects is higher than 15 °, heater 9 stops heating.
When the DIE Temperature that DIE Temperature detection sensor 12 detects is higher than 65 °, wind power generating set is shut down Safeguard measure stops the action generating electricity.
In the following, with reference to the wind driven generator set converter cooling system in attached drawing 5 Control system architecture just the present invention Technical solution illustrates.
The environment temperature detection sensor 102 of wind power generating set can real-time monitor environment temperature.Environment temperature is examined Controller 8 can be sent to by the environment temperature of monitoring by surveying sensor 102.Default environment temperature threshold value Tn.
Situation one：
Controller 8 determines that the environment temperature that environment temperature detection sensor 102 monitors is less than or equal to Tn, then controller 8 is controlled Inlet temperature standard highest threshold value A processed remains unchanged and controls inlet temperature standard lowest threshold B to remain unchanged.
Situation two：
Controller 8 determines that the environment temperature that environment temperature detection sensor 102 monitors is more than Tn, and controller 8 controls import Temperature standard highest threshold value A is reduced to inlet temperature and stablizes highest threshold value A 1 and control inlet temperature standard lowest threshold B drops Stablize lowest threshold B1 as low as inlet temperature.A1<A；B1<B.
It is an example below：
A=33 °；B=29 °；A1=30 °；B1=27 °；Tn=30 °.
When the environment temperature that environment temperature detection sensor 102 monitors is below or equal to 30 °, the import temperature of current transformer 2 Degree control is between 29 °~33 °.
When the environment temperature that environment temperature detection sensor 102 monitors is higher than 30 °, the inlet temperature control of current transformer 2 exists Between 27 °~30 °.
In the following, with reference to the wind driven generator set converter cooling system in attached drawing 6 Control system architecture just the present invention Technical solution illustrates.
Under extreme weather, as an example：Northeast Regional, when annual spring and summer joins, circumstance of temperature difference is larger；Early morning temperature Degree surpasses 20 ° with midday temperatures gap.
If wind power generating set is by chance undergoing from calm in the case of strong wind.Since radiator 3 is in wind-force The outside of generating set, when the fan of radiator 3 does not start, coolant temperature will be very high in radiator 3.
At this point, wind power generating set experience is primary calm to high wind conditions, the temperature for being equivalent to current transformer 2 is flown up, Urgent need radiates.
Start to radiate when opening triple valve 6, due to the work also not yet in effect of radiator 3, so that current transformer 2 is entire Heat-sinking capability is less than required heat-sinking capability, can not effectively reduce the temperature of current transformer 2, and then caused by initiation current transformer 2 The stopping alarm of wind power generating set.
Using the control system in Fig. 6, powder prediction device 103 can predict the wind speed in future time period.Wind work( Rate prediction meanss 103 will predict that the wind speed in future time period is sent to controller 8.
Controller 8 determines that the environment temperature that environment temperature detection sensor 102 monitors in real time is more than environment temperature maximum threshold Value, and wind power prediction device 103 predicts that the wind speed in future time period is more than wind speed max-thresholds, then illustrates wind-power electricity generation Unit Operation at full power, the temperature of current transformer 2 may be flown up, and urgent need radiates.
The technical solution in Fig. 2 and Fig. 4 can be used simultaneously, i.e.,：Controller 8 sets the frequency of frequency converter 101 to be equal to frequency Rate max-thresholds by the frequency of the FREQUENCY CONTROL circulating pump 1 of frequency converter 101, pass through the cooling of 1 adjustment degree cooling system of circulating pump Liquid measure.
At the same time, controller 8 controls triple valve 6 to open, and flows through the coolant of current transformer 2 by triple valve 6 by radiating Device 3 is back to current transformer 2 after radiating.
Simultaneously using the technical solution in Fig. 2 and Fig. 4, the temperature of current transformer 2 can be reduced rapidly, reaches preferable heat dissipation Effect, so as to the normal operation of wind power generating set.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical features into Row equivalent replacement；And these modifications or replacement, the essence of corresponding technical solution is not made to be detached from various embodiments of the present invention technology The range of scheme.

Claims (27)

1. a kind of control method of wind driven generator set converter cooling system, which is characterized in that including：
The wind driven generator set converter cooling system include frequency converter, circulating pump, current transformer, positioned at the current transformer import Inlet temperature detection sensor and positioned at the current transformer outlet outlet temperature detection sensor；
What the inlet temperature and the outlet temperature detection sensor detected according to the inlet temperature detection sensor detected goes out Mouth temperature computation temperature difference；
The frequency of the frequency converter is controlled according to the temperature difference, the frequency of circulating pump, passes through as described in the Frequency Converter Control The circulating pump adjusts the cool but liquid measure of the cooling system.
2. the control method of wind driven generator set converter cooling system according to claim 1, which is characterized in that it is described according to The frequency of the frequency converter is controlled according to the temperature difference, including：
The temperature difference is less than or equal to the standard temperature difference, then the frequency for keeping the frequency converter is constant；
The temperature difference is more than the standard temperature difference, then improves the frequency of the frequency converter.
3. the control method of wind driven generator set converter cooling system according to claim 2, which is characterized in that described to carry The frequency of the high frequency converter, including：
A, the frequency of the frequency converter is improved into product to original frequency and coefficient of frequency, the coefficient of frequency is according to the period The determining parameter of number；
B, judge whether the temperature difference is more than the standard temperature difference in next period；
If c, the temperature difference is less than or equal to the standard temperature difference, the frequency for keeping the frequency converter is constant；
If d, the temperature difference is more than the standard temperature difference and the frequency of the frequency converter is less than frequency max-thresholds, a is returned；
If e, the temperature difference is more than the standard temperature difference and the frequency of the frequency converter is equal to frequency max-thresholds, police is sent out It accuses.
4. according to the control method of any one of claims 1 to 3 wind driven generator set converter cooling system, feature exists In the wind driven generator set converter cooling system further includes triple valve and radiator；
The method further includes：
The inlet temperature of the inlet temperature detection sensor detection is more than inlet temperature standard highest threshold value, then opens described three Port valve flows through after the coolant of the current transformer is radiated by the triple valve by the radiator and is back to the unsteady flow Device；
The inlet temperature of the inlet temperature detection sensor detection is less than inlet temperature standard lowest threshold, then closes described three Port valve.
5. the control method of wind driven generator set converter cooling system according to claim 4, which is characterized in that the wind Power generator group cooling system for converter further includes the DIE Temperature detection sensor inside the current transformer；
DIE Temperature inside the current transformer of the DIE Temperature detection sensor detection is more than shutdown threshold, then controls institute It states wind power generating set and stops power generation, the shutdown threshold is more than the inlet temperature standard highest threshold value.
6. the control method of wind driven generator set converter cooling system according to claim 4, which is characterized in that the wind Power generator group cooling system for converter further includes heater；
The method further includes
The inlet temperature of the inlet temperature detection sensor detection is less than or equal to heating threshold value, then controls the heater starting Heating inputs the cooling liquid stream of the current transformer；
The inlet temperature of the inlet temperature detection sensor detection, which is more than or equal to, stops heating threshold value, then controls the heater Stop the cooling liquid stream that heating inputs the current transformer,
The heating threshold value is less than the stopping and adds in threshold value, and it is minimum that the stopping heating threshold value is less than the inlet temperature standard Threshold value.
7. the control method of wind driven generator set converter cooling system according to claim 1, which is characterized in that the wind Power generator group cooling system for converter further includes the DIE Temperature detection sensor inside the current transformer；
The inlet temperature detected according to the inlet temperature detection sensor and the outlet temperature detection sensor detect Outlet temperature calculate temperature difference before, further include：
The DIE Temperature unit of account time inside the current transformer detected in real time based on the DIE Temperature detection sensor Interior internal temperature rise；
The internal temperature rise is less than or equal to Standard internal Wen Sheng.
8. the control method of wind driven generator set converter cooling system according to claim 7, which is characterized in that the wind Power generator group cooling system for converter further includes triple valve and radiator；
DIE Temperature unit of account inside the current transformer detected in real time based on the DIE Temperature detection sensor After internal temperature rise in time, further include：
The internal temperature rise is more than Standard internal Wen Sheng, then the frequency of the frequency converter is equal to frequency max-thresholds, by the change Frequency device controls the frequency of the circulating pump, and the cooling liquid measure of the cooling system is adjusted by the circulating pump；
The triple valve is opened, flows through after the coolant of the current transformer is radiated by the triple valve by the radiator and returns It flow to the current transformer.
9. the control method of wind driven generator set converter cooling system according to claim 4, which is characterized in that the wind Power generator group cooling system for converter further includes the environment temperature detection sensor of wind power generating set；
The environment temperature of the environment temperature detection sensor monitoring is less than or equal to environment temperature threshold value, then the inlet temperature mark Quasi- highest threshold value remains unchanged, and the inlet temperature standard lowest threshold remains unchanged；
The environment temperature of environment temperature detection sensor monitoring is more than environment temperature threshold value, then the inlet temperature standard is most High threshold is reduced to inlet temperature and stablizes highest threshold value, and the inlet temperature standard lowest threshold is reduced to inlet temperature and stablizes most Low threshold.
10. the control method of wind driven generator set converter cooling system according to claim 1, which is characterized in that described Wind driven generator set converter cooling system further includes the environment temperature detection sensor of wind power generating set；
The inlet temperature detected according to the inlet temperature detection sensor and the outlet temperature detection sensor detect Outlet temperature calculate temperature difference before, further include：
The environment Wen Sheng in the environment temperature unit of account time detected in real time according to the environment temperature detection sensor；
The environment Wen Sheng is less than or equal to standard environment Wen Sheng.
11. the control method of wind driven generator set converter cooling system according to claim 10, which is characterized in that described Wind driven generator set converter cooling system further includes triple valve and radiator；
Environment Wen Sheng in the environment temperature unit of account time detected in real time based on the environment temperature detection sensor Later, it further includes：
The environment Wen Sheng is more than standard environment Wen Sheng, then the frequency of the frequency converter is equal to frequency max-thresholds, by the change Frequency device controls the frequency of the circulating pump, and the cooling liquid measure of the cooling system is adjusted by the circulating pump；
The triple valve is opened, flows through after the coolant of the current transformer is radiated by the triple valve by the radiator and returns It flow to the current transformer.
12. the control method of wind driven generator set converter cooling system according to claim 1, which is characterized in that described Wind driven generator set converter cooling system further includes the environment temperature detection sensor and wind power prediction of wind power generating set Device；
The inlet temperature detected according to the inlet temperature detection sensor and the outlet temperature detection sensor detect Outlet temperature calculate temperature difference before, further include：
The environment temperature that the environment temperature detection sensor detects in real time is less than or equal to environment temperature max-thresholds or the wind Wind speed in powder prediction device prediction future time period is less than or equal to wind speed max-thresholds.
13. the control method of wind driven generator set converter cooling system according to claim 12, which is characterized in that described Wind driven generator set converter cooling system further includes triple valve and radiator；
The method further includes：
The environment temperature that the environment temperature detection sensor detects in real time is more than environment temperature max-thresholds, and the wind power In the case that wind speed in prediction meanss prediction future time period is more than wind speed max-thresholds,
The frequency of the frequency converter is equal to frequency max-thresholds, and the frequency of circulating pump as described in the Frequency Converter Control passes through institute State the cooling liquid measure that circulating pump adjusts the cooling system；
The triple valve is opened, flows through after the coolant of the current transformer is radiated by the triple valve by the radiator and returns It flow to the current transformer.
14. a kind of control system of wind driven generator set converter cooling system, which is characterized in that the control system includes wind Power generator group cooling system for converter and controller；
The wind driven generator set converter cooling system include frequency converter, circulating pump, current transformer, positioned at the current transformer import Inlet temperature detection sensor and positioned at the current transformer outlet outlet temperature detection sensor；
The controller detects for the inlet temperature detected according to the inlet temperature detection sensor and the outlet temperature The outlet temperature of sensor detection calculates temperature difference；
The controller for controlling the frequency of the frequency converter according to the temperature difference, is followed as described in the Frequency Converter Control The frequency of ring pump adjusts the cooling liquid measure of the cooling system by the circulating pump.
15. the control system of wind driven generator set converter cooling system according to claim 14, which is characterized in that described Controller is less than or equal to the standard temperature difference specifically for the temperature difference, then the frequency of the frequency converter is set to be equal to original frequency；
The temperature difference is more than the standard temperature difference, then improves the frequency of the frequency converter.
16. the control system of wind driven generator set converter cooling system according to claim 15, which is characterized in that described Controller improves the product to original frequency and coefficient of frequency, the frequency system specifically for a, by the frequency of the frequency converter Number is the parameter determined according to periodicity；
B, judge whether the temperature difference is more than the standard temperature difference in next period；
If c, the temperature difference is less than or equal to the standard temperature difference, the frequency for keeping the frequency converter is constant；
If d, the temperature difference is more than the standard temperature difference and the frequency of the frequency converter is less than frequency max-thresholds, a is returned；
If e, the temperature difference is more than the standard temperature difference and the frequency of the frequency converter is equal to frequency max-thresholds, police is sent out It accuses.
17. according to the control system of any wind driven generator set converter cooling systems of claim 14-16, feature exists In the wind driven generator set converter cooling system further includes triple valve and radiator；
The inlet temperature of the inlet temperature detection sensor detection is more than inlet temperature standard highest threshold value, then the controller The triple valve is controlled to open, flow through the current transformer coolant radiated by the triple valve by the radiator after return It flow to the current transformer；
The inlet temperature of the inlet temperature detection sensor detection is less than inlet temperature standard lowest threshold, then the controller The triple valve is controlled to close.
18. the control system of wind driven generator set converter cooling system according to claim 17, which is characterized in that described Wind driven generator set converter cooling system further includes the DIE Temperature detection sensor inside the current transformer；
DIE Temperature inside the current transformer of the DIE Temperature detection sensor detection is more than shutdown threshold, the then control Device processed controls the wind power generating set to stop power generation, and the shutdown threshold is more than the inlet temperature standard highest threshold value.
19. the control system of wind driven generator set converter cooling system according to claim 17, which is characterized in that described Wind driven generator set converter cooling system further includes heater；
The inlet temperature of the inlet temperature detection sensor detection is less than or equal to heating threshold value, then described in the controller control Heater starting heating inputs the cooling liquid stream of the current transformer；
The inlet temperature of the inlet temperature detection sensor detection, which is more than or equal to, stops heating threshold value, then the controller control The heater stops the cooling liquid stream that heating inputs the current transformer,
The heating threshold value is less than the stopping and adds in threshold value, and it is minimum that the stopping heating threshold value is less than the inlet temperature standard Threshold value.
20. the control system of wind driven generator set converter cooling system according to claim 14, which is characterized in that described Wind driven generator set converter cooling system further includes the DIE Temperature detection sensor inside the current transformer；
The controller, the core being additionally operable to inside the current transformer detected in real time according to the DIE Temperature detection sensor Internal temperature rise in the temperature computation unit interval；
The internal temperature rise is less than or equal to Standard internal Wen Sheng.
21. the control system of wind driven generator set converter cooling system according to claim 20, which is characterized in that described Wind driven generator set converter cooling system further includes triple valve and radiator；
The internal temperature rise is more than Standard internal Wen Sheng, then the controller sets the frequency of the frequency converter to be equal to frequency maximum Threshold value, the frequency of circulating pump as described in the Frequency Converter Control pass through the coolant of the circulating pump adjustment cooling system Amount；
The controller controls the triple valve to open, and the coolant for flowing through the current transformer is dissipated by the triple valve by described The current transformer is back to after thermal heat dissipation.
22. the control system of wind driven generator set converter cooling system according to claim 17, which is characterized in that described Wind driven generator set converter cooling system further includes the environment temperature detection sensor of wind power generating set；
The environment temperature of the environment temperature detection sensor monitoring is less than or equal to environment temperature threshold value, then the controller control The inlet temperature standard highest threshold value remains unchanged and controls the inlet temperature standard lowest threshold to remain unchanged；
The environment temperature of the environment temperature detection sensor monitoring is more than environment temperature threshold value, then described in the controller control Inlet temperature standard highest threshold value is reduced to inlet temperature and stablizes highest threshold value and the controller control inlet temperature Standard lowest threshold is reduced to inlet temperature and stablizes lowest threshold.
23. the control system of wind driven generator set converter cooling system according to claim 14, which is characterized in that described Wind driven generator set converter cooling system further includes the environment temperature detection sensor of wind power generating set；
The controller is additionally operable to the environment temperature unit of account time detected in real time according to the environment temperature detection sensor Interior environment Wen Sheng；
The environment Wen Sheng is less than or equal to standard environment Wen Sheng.
24. the control system of wind driven generator set converter cooling system according to claim 23, which is characterized in that described Wind driven generator set converter cooling system further includes triple valve and radiator；
The environment Wen Sheng is more than standard environment Wen Sheng, then the controller sets the frequency of the frequency converter to be equal to frequency maximum Threshold value, the frequency of circulating pump as described in the Frequency Converter Control pass through the coolant of the circulating pump adjustment cooling system Amount；
The controller controls the triple valve to open, and the coolant for flowing through the current transformer is dissipated by the triple valve by described The current transformer is back to after thermal heat dissipation.
25. the control system of wind driven generator set converter cooling system according to claim 14, which is characterized in that described Wind driven generator set converter cooling system further includes the environment temperature detection sensor and wind power prediction of wind power generating set Device；
The controller is additionally operable to determine that the environment temperature that the environment temperature detection sensor detects in real time is less than or equal to environment Maximum temperature threshold value determines that the wind speed in the wind power prediction device prediction future time period is less than or equal to wind speed maximum Threshold value.
26. the control system of wind driven generator set converter cooling system according to claim 25, which is characterized in that described Wind driven generator set converter cooling system further includes triple valve and radiator；
The controller is additionally operable to determine that the environment temperature that the environment temperature detection sensor detects in real time is more than environment temperature Max-thresholds, and the wind speed in wind power prediction device prediction future time period is more than wind speed max-thresholds；
Determine that the environment Wen Sheng is more than standard environment Wen Sheng, then the controller sets the frequency of the frequency converter to be equal to frequency Max-thresholds, the frequency of circulating pump as described in the Frequency Converter Control adjust the cold of the cooling system by the circulating pump But liquid measure；
The controller controls the triple valve to open, and the water for flowing through the current transformer is filled by the triple valve by the heat dissipation The current transformer is back to after putting heat dissipation.
27. according to the control system of any wind driven generator set converter cooling systems of claim 14-26, feature exists In the controller is the programmable logic device PLC of the wind power generating set.
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CN107425232A (en) * 2017-05-11 2017-12-01 厦门金龙联合汽车工业有限公司 A kind of electrokinetic cell water chiller system and its intelligent control method

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CN111542209A (en) * 2020-06-13 2020-08-14 天津星火九州技术有限公司 Wind power converter cooling system
CN112815622A (en) * 2021-01-06 2021-05-18 杭州富通通信技术股份有限公司 Method for manufacturing optical fiber
CN113489239A (en) * 2021-07-10 2021-10-08 浙江尔格科技股份有限公司 Semi-direct-drive wind driven generator rotor cooler and cooling method thereof
CN113489239B (en) * 2021-07-10 2023-04-07 浙江尔格科技股份有限公司 Semi-direct-drive wind driven generator rotor cooler and cooling method thereof
CN114234357A (en) * 2021-12-24 2022-03-25 珠海格力电器股份有限公司 Air conditioner self-adaptive operation and maintenance method, air conditioner and computer readable storage medium

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